Create 'main' test directory and move 't' and 'r' there

1 files changed, 14947 insertions, 0 deletions

diff --git a/mysql-test/main/derived_cond_pushdown.result b/mysql-test/main/derived_cond_pushdown.result
new file mode 100644
index 00000000000..32d3c88cc8d
--- /dev/null
+++ b/mysql-test/main/derived_cond_pushdown.result
@@ -0,0 +1,14947 @@
+create table t1 (a int, b int, c int);
+create table t2 (a int, b int, c int, d decimal);
+insert into t1 values 
+(1,21,345), (1,33,7), (8,33,114), (1,21,500), (1,19,107), (5,14,787),
+(8,33,123), (9,10,211), (5,16,207), (1,33,988), (5,27,132), (1,21,104),
+(6,20,309), (6,20,315), (1,21,101), (8,33,404), (9,10,800), (1,21,123),
+(7,11,708), (6,20,214);
+insert into t2 values
+(2,3,207,207.0000), (1,21,909,12.0000), (7,13,312,406.0000), 
+(8,64,248,107.0000), (6,20,315,279.3333), (1,19,203,107.0000),
+(8,80,800,314.0000), (3,12,231,190.0000), (6,23,303,909.0000);
+Warnings:
+Note	1265	Data truncated for column 'd' at row 5
+create table t1_double(a int, b double, c double);
+insert into t1_double values 
+(1,23.4,14.3333), (1,12.5,18.9), (3,12.5,18.9),
+(4,33.4,14.3333), (4,14.3333,13.65), (5,17.89,7.22),
+(6,33.4,14.3), (10,33.4,13.65), (11,33.4,13.65);
+create table t2_double(a int, b double, c double);
+insert into t2_double values 
+(1,22.4,14.3333), (1,12.5,18.9), (2,22.4,18.9),
+(4,33.4,14.3333), (5,22.4,13.65), (7,17.89,18.9),
+(6,33.4,14.3333), (10,31.4,13.65), (12,33.4,13.65);
+create table t1_char(a char, b char(8), c int);
+insert into t1_char values
+('a','Ivan',1), ('b','Vika',2), ('b','Inga',6), ('c','Vika',7),
+('b','Ivan',7), ('a','Alex',6), ('b','Inga',5), ('d','Ron',9),
+('d','Harry',2), ('d','Hermione',3), ('c','Ivan',3), ('c','Harry',4);
+create table t2_char(a char, b char(8), c int);
+insert into t2_char values
+('b','Ivan',1), ('c','Vinny',3), ('c','Inga',9), ('a','Vika',1),
+('c','Ivan',2), ('b','Ali',6), ('c','Inga',2), ('a','Ron',9),
+('d','Harry',1), ('b','Hermes',3), ('b','Ivan',11), ('b','Harry',4);
+create table t1_decimal (a decimal(3,1), b decimal(3,1), c int);
+insert into t1_decimal values
+(1,1,23),(2,2,11),(3,3,16),
+(1,1,12),(1,1,14),(2,3,15),
+(2,1,13),(2,3,11),(3,3,16);
+create table t2_decimal (a decimal(3,1), b decimal(3,1), c int);
+insert into t2_decimal values
+(2,1,13),(2,2,11),(3,3,16),
+(1,3,22),(1,3,14),(2,2,15),
+(2,1,43),(2,3,11),(2,3,16);
+create view v1 as select a, b, max(c) as max_c, avg(c) as avg_c from t1 
+group by a,b having max_c < 707;
+create view v2 as select a, b, max(c) as max_c, avg(c) as avg_c from t1 
+where t1.a>5 group by a,b having max_c < 707;
+create view v3 as select a, b, min(c) as min_c from t1
+where t1.a<10 group by a,b having min_c > 109;
+create view v4 as
+select a, b, min(max_c) as min_c from v1
+where (v1.a<15) group by a,b;
+create view v_union as 
+select a, b, min(c) as c from t1
+where t1.a<10 group by a,b having c > 109
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300;
+create view v2_union as 
+select a, b, min(c) as c from t1
+where t1.a<10 group by a,b having c > 109
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+union
+select a, b, avg(c) as c from t1
+where t1.c>300 group by a,b having c < 707;
+create view v3_union as 
+select a, b, (a+1) as c from t1
+where t1.a<10
+union
+select a, b, c from t1
+where t1.b>10 and t1.c>100;
+create view v4_union as 
+select a, b, max(c)-100 as c from t1
+where t1.a<10 group by a,b having c > 109
+union
+select a, b, (c+100) as c from t1
+where t1.b>10;
+create view v_double as
+select a, avg(a/4) as avg_a, b, c from t1_double
+where (b>12.2) group by b,c having (avg_a<22.333);
+create view v_char as 
+select a, b, max(c) as max_c from t1_char 
+group by a,b having max_c < 9;
+create view v_decimal as
+select a, b, avg(c) as avg_c from t1_decimal
+group by a,b having (avg_c>12);
+# conjunctive subformula : pushing into HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	8	64	248	107
+6	20	315	279.3333	8	80	800	314
+select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	8	64	248	107
+6	20	315	279.3333	8	80	800	314
+explain select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c > 214"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t2.a > v1.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 214",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	8	64	248	107
+6	20	315	279.3333	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+6	20	315	279.3333	6	23	303	909
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	8	64	248	107
+6	20	315	279.3333	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+6	20	315	279.3333	6	23	303	909
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.max_c > 300",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	3	12	231	190
+select * from v1,t2 where 
+((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	3	12	231	190
+explain select * from v1,t2 where 
+((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c > 400 or v1.max_c < 135"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.max_c > 400 and t2.a > v1.a or v1.max_c < 135 and t2.a < v1.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (max_c > 400 or max_c < 135)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or 
+((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+6	20	315	279.3333	6	20	315	279
+select * from v1,t2 where
+((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or 
+((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+6	20	315	279.3333	6	20	315	279
+explain select * from v1,t2 where
+((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or 
+((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where
+((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or 
+((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c > 300 or v1.max_c < 135"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.b = t2.b and v1.max_c > 300 and v1.avg_c > t2.d or v1.a = t2.a and v1.max_c < 135 and v1.max_c < t2.c",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (max_c > 300 or max_c < 135)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+explain select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a > 6"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t2.b > v1.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 6"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v2.b > 25"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t2.a < v2.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b > 25"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	3	12	231	190
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where 
+((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	3	12	231	190
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where 
+((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a > 7 or v1.a < 2"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a > 7 and t2.c < v1.max_c or v1.a < 2 and t2.b < v1.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 7 or t1.a < 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v2,t2 where 
+((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	2	3	207	207
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	1	19	203	107
+6	20	315	279.3333	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v2,t2 where 
+((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	2	3	207	207
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	1	19	203	107
+6	20	315	279.3333	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v2,t2 where 
+((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v2,t2 where 
+((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v2.a > 7 or v2.a > 5"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v2.a > 7 and t2.c < v2.max_c or v2.a > 5 and t2.b < v2.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and (t1.a > 7 or t1.a > 5)"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or 
+((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+select * from v1,t2 where 
+((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or 
+((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+explain select * from v1,t2 where 
+((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or 
+((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or 
+((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a > 4 or v1.a < 2"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a > 4 and v1.b > t2.b and v1.max_c = t2.d or v1.a < 2 and v1.max_c < t2.c and v1.max_c = t2.d",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 4 or t1.a < 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformulas : pushing into HAVING and WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	6	23	303	909
+select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	6	23	303	909
+explain select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a < 2 and v1.max_c > 400"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t2.b > v1.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 400",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_double as v,t2_double as t where
+(v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
+a	avg_a	b	c	a	b	c
+1	0.50000000	12.5	18.9	1	22.4	14.3333
+1	0.50000000	12.5	18.9	1	12.5	18.9
+4	1.00000000	33.4	14.3333	4	33.4	14.3333
+4	1.00000000	14.3333	13.65	4	33.4	14.3333
+5	1.25000000	17.89	7.22	5	22.4	13.65
+6	1.50000000	33.4	14.3	6	33.4	14.3333
+10	2.62500000	33.4	13.65	10	31.4	13.65
+select * from v_double as v,t2_double as t where
+(v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
+a	avg_a	b	c	a	b	c
+1	0.50000000	12.5	18.9	1	22.4	14.3333
+1	0.50000000	12.5	18.9	1	12.5	18.9
+4	1.00000000	33.4	14.3333	4	33.4	14.3333
+4	1.00000000	14.3333	13.65	4	33.4	14.3333
+5	1.25000000	17.89	7.22	5	22.4	13.65
+6	1.50000000	33.4	14.3	6	33.4	14.3333
+10	2.62500000	33.4	13.65	10	31.4	13.65
+explain select * from v_double as v,t2_double as t where
+(v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t.a	2	Using where
+2	DERIVED	t1_double	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_double as v,t2_double as t where
+(v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v.avg_a > 0.45 and v.b > 10",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_a < 22.333 and avg_a > 0.45",
+          "filesort": {
+            "sort_key": "t1_double.b, t1_double.c",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_double",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_double.b > 12.2 and t1_double.b > 10"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_decimal as v,t2_decimal as t where
+(v.a=t.a) and (v.avg_c>15) and (v.b>1);
+a	b	avg_c	a	b	c
+3.0	3.0	16.0000	3.0	3.0	16
+select * from v_decimal as v,t2_decimal as t where
+(v.a=t.a) and (v.avg_c>15) and (v.b>1);
+a	b	avg_c	a	b	c
+3.0	3.0	16.0000	3.0	3.0	16
+explain select * from v_decimal as v,t2_decimal as t where
+(v.a=t.a) and (v.avg_c>15) and (v.b>1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	3	test.t.a	2	Using where
+2	DERIVED	t1_decimal	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_decimal as v,t2_decimal as t where
+(v.a=t.a) and (v.avg_c>15) and (v.b>1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "3",
+      "used_key_parts": ["a"],
+      "ref": ["test.t.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v.avg_c > 15 and v.b > 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_c > 12 and avg_c > 15",
+          "filesort": {
+            "sort_key": "t1_decimal.a, t1_decimal.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_decimal",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_decimal.b > 1"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into HAVING and WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or 
+((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where 
+((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or 
+((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	3	12	231	190
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where 
+((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or 
+((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or 
+((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a > 7 and v1.max_c > 300 or v1.a < 4 and v1.max_c < 500"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a > 7 and v1.max_c > 300 and t2.c < v1.max_c or v1.a < 4 and v1.max_c < 500 and t2.b < v1.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a > 7 and max_c > 300 or t1.a < 4 and max_c < 500)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 7 or t1.a < 4"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a < 2 and v1.max_c > 120 or v1.a > 7"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a < 2 and v1.max_c > 120 or v1.a > 7",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a < 2 and max_c > 120 or t1.a > 7)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 2 or t1.a > 7"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formulas : pushing into WHERE and HAVING     
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where 
+((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where 
+((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a < 2 and v1.max_c > 120 or v1.a > 7"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.b = t2.b and v1.a < 2 and v1.max_c > 120 or v1.a > 7",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a < 2 and max_c > 120 or t1.a > 7)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 2 or t1.a > 7"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
+((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+select * from v1,t2 where
+((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
+((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+explain select * from v1,t2 where
+((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
+((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where
+((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
+((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a < 2 and v1.max_c < 200 or v1.a > 4"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a < 2 and v1.max_c < 200 and t2.c > v1.max_c and v1.max_c = t2.d or v1.max_c = t2.c and v1.a > 4 and t2.c < 500 and t2.b < v1.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a < 2 and max_c < 200 or t1.a > 4 and max_c < 500)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 2 or t1.a > 4"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# prepare of a query containing extracted or formula
+prepare stmt from "select * from v1,t2 where 
+  ((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
+execute stmt;
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	3	12	231	190
+execute stmt;
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	3	12	231	190
+deallocate prepare stmt;
+prepare stmt from 
+"explain format=json select * from v1,t2 where 
+    ((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
+execute stmt;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c > 400 or v1.max_c < 135"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.max_c > 400 and t2.a > v1.a or v1.max_c < 135 and t2.a < v1.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (max_c > 400 or max_c < 135)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+execute stmt;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c > 400 or v1.max_c < 135"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.max_c > 400 and t2.a > v1.a or v1.max_c < 135 and t2.a < v1.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (max_c > 400 or max_c < 135)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+deallocate prepare stmt;
+# conjunctive subformula : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+explain select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.b	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 1 and t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.a = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a = 1"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+explain select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.d	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.d is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["max_c"],
+      "ref": ["test.t2.d"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.a = 5 and v1.max_c = t2.d",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a = 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformula : pushing into WHERE using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+1	19	107	107.0000	1	19	203	107
+select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+1	19	107	107.0000	1	19	203	107
+explain select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
+a	b	max_c	avg_c	a	b	c	d
+select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
+a	b	max_c	avg_c	a	b	c	d
+explain select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	10	test.t2.a,test.t2.a	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "10",
+      "used_key_parts": ["a", "b"],
+      "ref": ["test.t2.a", "test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.b = t1.a"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformula : pushing into HAVING using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+6	20	315	279.3333	6	20	315	279
+select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+6	20	315	279.3333	6	20	315	279
+explain select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.c	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.c > 150 and t2.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["max_c"],
+      "ref": ["test.t2.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 150",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted and formula : pushing into WHERE  
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
+a	b	max_c	avg_c	a	b	c	d
+select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
+a	b	max_c	avg_c	a	b	c	d
+explain select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+explain format=json select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 3"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a = 3 and v1.b = 3"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 20,
+            "filtered": 100,
+            "attached_condition": "t1.a = 3 and t1.b = 3"
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	2	3	207	207
+explain select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+explain format=json select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 2"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a = 1 and v1.b = 21"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 20,
+            "filtered": 100,
+            "attached_condition": "t1.a = 1 and t1.b = 21"
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_char as v,t2_char as t where 
+(v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
+a	b	max_c	a	b	c
+c	Harry	4	d	Harry	1
+c	Harry	4	b	Harry	4
+select * from v_char as v,t2_char as t where 
+(v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
+a	b	max_c	a	b	c
+c	Harry	4	d	Harry	1
+c	Harry	4	b	Harry	4
+explain select * from v_char as v,t2_char as t where 
+(v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	12	Using where
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1_char	ALL	NULL	NULL	NULL	NULL	12	Using where; Using temporary; Using filesort
+explain format=json select * from v_char as v,t2_char as t where 
+(v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 12,
+      "filtered": 100,
+      "attached_condition": "v.a = 'c' and v.b < 'Hermes'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 9",
+          "filesort": {
+            "sort_key": "t1_char.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_char",
+                "access_type": "ALL",
+                "rows": 12,
+                "filtered": 100,
+                "attached_condition": "t1_char.a = 'c' and t1_char.b < 'Hermes'"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "t",
+        "access_type": "ALL",
+        "rows": 12,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t.b = v.b or v.max_c > 20"
+    }
+  }
+}
+# extracted and formula : pushing into WHERE using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_decimal as v,t2_decimal as t where
+(v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
+a	b	avg_c	a	b	c
+1.0	1.0	16.3333	2.0	1.0	13
+3.0	3.0	16.0000	3.0	3.0	16
+3.0	3.0	16.0000	1.0	3.0	22
+3.0	3.0	16.0000	1.0	3.0	14
+1.0	1.0	16.3333	2.0	1.0	43
+3.0	3.0	16.0000	2.0	3.0	11
+3.0	3.0	16.0000	2.0	3.0	16
+select * from v_decimal as v,t2_decimal as t where
+(v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
+a	b	avg_c	a	b	c
+1.0	1.0	16.3333	2.0	1.0	13
+3.0	3.0	16.0000	3.0	3.0	16
+3.0	3.0	16.0000	1.0	3.0	22
+3.0	3.0	16.0000	1.0	3.0	14
+1.0	1.0	16.3333	2.0	1.0	43
+3.0	3.0	16.0000	2.0	3.0	11
+3.0	3.0	16.0000	2.0	3.0	16
+explain select * from v_decimal as v,t2_decimal as t where
+(v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	6	test.t.b,test.t.b	2	
+2	DERIVED	t1_decimal	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_decimal as v,t2_decimal as t where
+(v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "(t.b > 1 or t.b = 1) and t.b is not null and t.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "6",
+      "used_key_parts": ["a", "b"],
+      "ref": ["test.t.b", "test.t.b"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_c > 12",
+          "filesort": {
+            "sort_key": "t1_decimal.a, t1_decimal.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_decimal",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_decimal.b = t1_decimal.a and (t1_decimal.a > 1 or t1_decimal.a = 1)"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into HAVING using equalities     
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2
+where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+6	20	315	279.3333	6	20	315	279
+select * from v1,t2
+where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+5	16	207	207.0000	2	3	207	207
+6	20	315	279.3333	6	20	315	279
+explain select * from v1,t2
+where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2
+where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 4 or t2.c > 150"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = t2.a and t2.a < 4 or v1.max_c = t2.c and t2.c > 150",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a < 4 or max_c > 150)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformulas : pushing into WHERE and HAVING using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2
+where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279
+select * from v1,t2
+where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279
+explain select * from v1,t2
+where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	10	test.t2.a,test.t2.c	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2
+where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 5 and t2.c > 250 and t2.a is not null and t2.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "10",
+      "used_key_parts": ["a", "max_c"],
+      "ref": ["test.t2.a", "test.t2.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 250",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformulas : pushing into WHERE and HAVING
+# pushing equalities    
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
+a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 8"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a = 8 and v1.max_c = 404"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c = 404",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a = 8"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformulas : pushing into WHERE and HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+(v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+select * from v1,t2 where 
+(v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
+a	b	max_c	avg_c	a	b	c	d
+5	16	207	207.0000	2	3	207	207
+explain select * from v1,t2 where 
+(v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.d	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+(v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.d is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["max_c"],
+      "ref": ["test.t2.d"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.a > 3 and v1.max_c > 200 and t2.b < v1.b and t2.d = v1.max_c",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 200",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 3"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformula : pushing into WHERE
+# extracted or formula : pushing into HAVING using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_double as v,t2_double as t where
+(v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
+a	avg_a	b	c	a	b	c
+select * from v_double as v,t2_double as t where
+(v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
+a	avg_a	b	c	a	b	c
+explain select * from v_double as v,t2_double as t where
+(v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	18	test.t.c,test.t.c	2	Using where
+2	DERIVED	t1_double	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_double as v,t2_double as t where
+(v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t.c is not null and t.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "18",
+      "used_key_parts": ["b", "c"],
+      "ref": ["test.t.c", "test.t.c"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t.c > 10 or v.a = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_a < 22.333 and (t1_double.b > 10 or t1_double.a = 1)",
+          "filesort": {
+            "sort_key": "t1_double.b, t1_double.c",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_double",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_double.c = t1_double.b and t1_double.b > 12.2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# conjunctive subformula : pushing into WHERE
+# extracted or formula : pushing into HAVING using equalities 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_double as v,t2_double as t where
+(((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
+a	avg_a	b	c	a	b	c
+1	0.50000000	12.5	18.9	1	12.5	18.9
+1	0.50000000	12.5	18.9	2	22.4	18.9
+1	0.50000000	12.5	18.9	7	17.89	18.9
+select * from v_double as v,t2_double as t where
+(((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
+a	avg_a	b	c	a	b	c
+1	0.50000000	12.5	18.9	1	12.5	18.9
+1	0.50000000	12.5	18.9	2	22.4	18.9
+1	0.50000000	12.5	18.9	7	17.89	18.9
+explain select * from v_double as v,t2_double as t where
+(((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	9	test.t.c	2	Using where
+2	DERIVED	t1_double	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_double as v,t2_double as t where
+(((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t.c > 18 and t.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "9",
+      "used_key_parts": ["c"],
+      "ref": ["test.t.c"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v.a > 0.2 or v.b < 17 or t.c > 17",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_a < 22.333 and (t1_double.a > 0.2 or t1_double.b < 17 or t1_double.c > 17)",
+          "filesort": {
+            "sort_key": "t1_double.b, t1_double.c",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_double",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_double.b > 12.2 and t1_double.c > 18"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into WHERE
+# conjunctive subformula : pushing into HAVING
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_decimal as v,t2_decimal as t where
+(((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
+a	b	avg_c	a	b	c
+2.0	1.0	13.0000	2.0	1.0	13
+2.0	3.0	13.0000	2.0	1.0	13
+2.0	1.0	13.0000	2.0	2.0	11
+2.0	3.0	13.0000	2.0	2.0	11
+2.0	1.0	13.0000	3.0	3.0	16
+2.0	3.0	13.0000	3.0	3.0	16
+2.0	1.0	13.0000	1.0	3.0	22
+2.0	3.0	13.0000	1.0	3.0	22
+2.0	1.0	13.0000	1.0	3.0	14
+2.0	3.0	13.0000	1.0	3.0	14
+2.0	1.0	13.0000	2.0	2.0	15
+2.0	3.0	13.0000	2.0	2.0	15
+2.0	1.0	13.0000	2.0	1.0	43
+2.0	3.0	13.0000	2.0	1.0	43
+2.0	1.0	13.0000	2.0	3.0	11
+2.0	3.0	13.0000	2.0	3.0	11
+2.0	1.0	13.0000	2.0	3.0	16
+2.0	3.0	13.0000	2.0	3.0	16
+select * from v_decimal as v,t2_decimal as t where
+(((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
+a	b	avg_c	a	b	c
+2.0	1.0	13.0000	2.0	1.0	13
+2.0	3.0	13.0000	2.0	1.0	13
+2.0	1.0	13.0000	2.0	2.0	11
+2.0	3.0	13.0000	2.0	2.0	11
+2.0	1.0	13.0000	3.0	3.0	16
+2.0	3.0	13.0000	3.0	3.0	16
+2.0	1.0	13.0000	1.0	3.0	22
+2.0	3.0	13.0000	1.0	3.0	22
+2.0	1.0	13.0000	1.0	3.0	14
+2.0	3.0	13.0000	1.0	3.0	14
+2.0	1.0	13.0000	2.0	2.0	15
+2.0	3.0	13.0000	2.0	2.0	15
+2.0	1.0	13.0000	2.0	1.0	43
+2.0	3.0	13.0000	2.0	1.0	43
+2.0	1.0	13.0000	2.0	3.0	11
+2.0	3.0	13.0000	2.0	3.0	11
+2.0	1.0	13.0000	2.0	3.0	16
+2.0	3.0	13.0000	2.0	3.0	16
+explain select * from v_decimal as v,t2_decimal as t where
+(((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	9	Using join buffer (flat, BNL join)
+2	DERIVED	t1_decimal	ALL	NULL	NULL	NULL	NULL	9	Using where; Using temporary; Using filesort
+explain format=json select * from v_decimal as v,t2_decimal as t where
+(((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "(v.a > 4 or v.a = 2 or v.b > 3) and v.avg_c = 13",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "avg_c > 12 and avg_c = 13",
+          "filesort": {
+            "sort_key": "t1_decimal.a, t1_decimal.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_decimal",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t1_decimal.a > 4 or t1_decimal.a = 2 or t1_decimal.b > 3"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "t",
+        "access_type": "ALL",
+        "rows": 9,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL"
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
+a	b	max_c	avg_c	a	b	c	d
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
+a	b	max_c	avg_c	a	b	c	d
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	10	test.t2.a,test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "10",
+      "used_key_parts": ["a", "b"],
+      "ref": ["test.t2.a", "test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.max_c > 300",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.b = t1.a and t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# nothing to push
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (t2.a<2) and (t2.c>900);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	21	909	12
+5	16	207	207.0000	1	21	909	12
+5	27	132	132.0000	1	21	909	12
+6	20	315	279.3333	1	21	909	12
+8	33	404	213.6667	1	21	909	12
+select * from v1,t2 where (t2.a<2) and (t2.c>900);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	21	909	12
+5	16	207	207.0000	1	21	909	12
+5	27	132	132.0000	1	21	909	12
+6	20	315	279.3333	1	21	909	12
+8	33	404	213.6667	1	21	909	12
+explain select * from v1,t2 where (t2.a<2) and (t2.c>900);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where (t2.a<2) and (t2.c>900);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 2 and t2.c > 900"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+6	20	315	279.3333	6	20	315	279
+1	19	107	107.0000	1	19	203	107
+select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+6	20	315	279.3333	6	20	315	279
+1	19	107	107.0000	1	19	203	107
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	10	test.t2.a,test.t2.b	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "10",
+      "used_key_parts": ["a", "b"],
+      "ref": ["test.t2.a", "test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+(t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+select * from v1,t2 where 
+(t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	80	800	314
+explain select * from v1,t2 where 
+(t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+(t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = t2.a or v1.b = t2.b and (v1.a = 1 or v1.a = 6)",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	6	20	315	279
+1	19	107	107.0000	1	19	203	107
+1	19	107	107.0000	8	80	800	314
+1	19	107	107.0000	3	12	231	190
+1	19	107	107.0000	6	23	303	909
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	16	207	207.0000	2	3	207	207
+5	27	132	132.0000	2	3	207	207
+6	20	315	279.3333	2	3	207	207
+8	33	404	213.6667	2	3	207	207
+select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	2	3	207	207
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	7	13	312	406
+1	19	107	107.0000	8	64	248	107
+1	19	107	107.0000	6	20	315	279
+1	19	107	107.0000	1	19	203	107
+1	19	107	107.0000	8	80	800	314
+1	19	107	107.0000	3	12	231	190
+1	19	107	107.0000	6	23	303	909
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	1	19	203	107
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+5	16	207	207.0000	2	3	207	207
+5	27	132	132.0000	2	3	207	207
+6	20	315	279.3333	2	3	207	207
+8	33	404	213.6667	2	3	207	207
+explain select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = 1 or v1.b = 21 or t2.a = 2",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+(t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	21	909	12
+5	16	207	207.0000	1	21	909	12
+5	27	132	132.0000	1	21	909	12
+6	20	315	279.3333	1	21	909	12
+8	33	404	213.6667	1	21	909	12
+select * from v1,t2 where 
+(t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	21	500	234.6000	1	21	909	12
+5	16	207	207.0000	1	21	909	12
+5	27	132	132.0000	1	21	909	12
+6	20	315	279.3333	1	21	909	12
+8	33	404	213.6667	1	21	909	12
+explain select * from v1,t2 where 
+(t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,t2 where 
+(t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 2 and t2.c > 900"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a < t2.a or t2.a < 11",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : nothing to push
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where 
+(v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	33	404	213.6667	8	64	248	107
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	8	80	800	314
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+select * from v1,v2,t2 where 
+(v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+8	33	404	213.6667	8	33	404	213.6667	8	64	248	107
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	8	80	800	314
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+explain select * from v1,v2,t2 where 
+(v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key1	key1	5	test.t2.a	2	
+1	PRIMARY	<derived3>	ref	key0	key0	5	test.t2.a	2	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where 
+(v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key1"],
+      "key": "key1",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.b < 50",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b < 50"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	2	3	207	207
+6	20	315	279.3333	6	20	315	279.3333	1	21	909	12
+6	20	315	279.3333	6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	1	19	203	107
+6	20	315	279.3333	6	20	315	279.3333	3	12	231	190
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	8	33	404	213.6667	6	23	303	909
+select * from v1,v2,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	2	3	207	207
+6	20	315	279.3333	6	20	315	279.3333	1	21	909	12
+6	20	315	279.3333	6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	1	19	203	107
+6	20	315	279.3333	6	20	315	279.3333	3	12	231	190
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	8	33	404	213.6667	6	23	303	909
+explain select * from v1,v2,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived3>	ref	key0	key0	5	v1.b	2	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.b < 50"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.b is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v1.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.a = v1.a or v1.a = t2.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where 
+((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	33	404	213.6667	8	80	800	314
+select * from v1,v2,t2 where 
+((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	8	33	404	213.6667	8	80	800	314
+explain select * from v1,v2,t2 where 
+((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (incremental, BNL join)
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where 
+((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = t2.a or t2.c < 115",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived3>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "incremental",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = t2.a and v2.a = t2.a or v2.b > 13 and t2.c < 115",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : pushing in all tables
+# conjunctive subformula : pushing into HAVING
+# extracted or formula : pushing into WHERE
+# pushing equalities  
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and 
+((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	6	20	315	279.3333	1	21	909	12
+1	19	107	107.0000	6	20	315	279.3333	1	19	203	107
+1	19	107	107.0000	8	33	404	213.6667	1	21	909	12
+1	19	107	107.0000	8	33	404	213.6667	1	19	203	107
+select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and 
+((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	6	20	315	279.3333	1	21	909	12
+1	19	107	107.0000	6	20	315	279.3333	1	19	203	107
+1	19	107	107.0000	8	33	404	213.6667	1	21	909	12
+1	19	107	107.0000	8	33	404	213.6667	1	19	203	107
+explain select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and 
+((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (incremental, BNL join)
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and 
+((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c < 300"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c < 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived3>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v2.b < 50 or v2.b = 19"
+      },
+      "buffer_type": "incremental",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "(v2.a = v1.a or v1.a = t2.a) and (v2.b < 50 or v2.b = 19)",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and (t1.b < 50 or t1.b = 19)"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : pushing only in one table
+# conjunctive subformula : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where 
+(v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+select * from v1,v2,t2 where 
+(v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+explain select * from v1,v2,t2 where 
+(v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key1	key1	10	test.t2.a,test.t2.a	2	
+1	PRIMARY	<derived3>	ref	key0	key0	5	test.t2.a	2	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where 
+(v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key1"],
+      "key": "key1",
+      "key_length": "10",
+      "used_key_parts": ["a", "b"],
+      "ref": ["test.t2.a", "test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.b = t1.a"
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.max_c < 300",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707 and max_c < 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : pushing only in one table
+# extracted and formula : pushing into WHERE
+# conjunctive subformula : pushing into WHERE using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	c	d
+explain select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived3>	ref	key0	key0	5	v1.b	2	
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a = 1 and v1.b > 10"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.b is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a = 1 and t1.b > 10"
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v1.b"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b > 10"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into WHERE
+# conjunctive subformula : pushing into WHERE using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
+a	b	max_c	a	b	c
+b	Vika	2	b	Ivan	1
+b	Vika	2	b	Ali	6
+b	Vika	2	b	Hermes	3
+b	Vika	2	b	Ivan	11
+b	Vika	2	b	Harry	4
+select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
+a	b	max_c	a	b	c
+b	Vika	2	b	Ivan	1
+b	Vika	2	b	Ali	6
+b	Vika	2	b	Hermes	3
+b	Vika	2	b	Ivan	11
+b	Vika	2	b	Harry	4
+explain select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	12	Using where
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	12	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1_char	ALL	NULL	NULL	NULL	NULL	12	Using where; Using temporary; Using filesort
+explain format=json select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 12,
+      "filtered": 100,
+      "attached_condition": "v.a = 'b' and (v.b = 'Vika' or v.b = 'Ali')",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 9",
+          "filesort": {
+            "sort_key": "t1_char.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_char",
+                "access_type": "ALL",
+                "rows": 12,
+                "filtered": 100,
+                "attached_condition": "t1_char.a = 'b' and (t1_char.b = 'Vika' or t1_char.b = 'Ali')"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "t",
+        "access_type": "ALL",
+        "rows": 12,
+        "filtered": 100,
+        "attached_condition": "t.a = 'b'"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL"
+    }
+  }
+}
+# using several derived tables : pushing in all tables
+# extracted or formula : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING  
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,v2,v3,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33)) 
+and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	min_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	7	11	708	7	13	312	406
+6	20	315	279.3333	6	20	315	279.3333	8	33	114	8	64	248	107
+6	20	315	279.3333	6	20	315	279.3333	6	20	214	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	8	33	114	8	80	800	314
+6	20	315	279.3333	6	20	315	279.3333	6	20	214	6	23	303	909
+6	20	315	279.3333	8	33	404	213.6667	6	20	214	6	20	315	279
+6	20	315	279.3333	8	33	404	213.6667	6	20	214	6	23	303	909
+8	33	404	213.6667	6	20	315	279.3333	8	33	114	8	64	248	107
+8	33	404	213.6667	6	20	315	279.3333	8	33	114	8	80	800	314
+8	33	404	213.6667	8	33	404	213.6667	7	11	708	7	13	312	406
+8	33	404	213.6667	8	33	404	213.6667	8	33	114	8	64	248	107
+8	33	404	213.6667	8	33	404	213.6667	6	20	214	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	8	33	114	8	80	800	314
+8	33	404	213.6667	8	33	404	213.6667	6	20	214	6	23	303	909
+select * from v1,v2,v3,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33)) 
+and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
+a	b	max_c	avg_c	a	b	max_c	avg_c	a	b	min_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279.3333	7	11	708	7	13	312	406
+6	20	315	279.3333	6	20	315	279.3333	8	33	114	8	64	248	107
+6	20	315	279.3333	6	20	315	279.3333	6	20	214	6	20	315	279
+6	20	315	279.3333	6	20	315	279.3333	8	33	114	8	80	800	314
+6	20	315	279.3333	6	20	315	279.3333	6	20	214	6	23	303	909
+6	20	315	279.3333	8	33	404	213.6667	6	20	214	6	20	315	279
+6	20	315	279.3333	8	33	404	213.6667	6	20	214	6	23	303	909
+8	33	404	213.6667	6	20	315	279.3333	8	33	114	8	64	248	107
+8	33	404	213.6667	6	20	315	279.3333	8	33	114	8	80	800	314
+8	33	404	213.6667	8	33	404	213.6667	7	11	708	7	13	312	406
+8	33	404	213.6667	8	33	404	213.6667	8	33	114	8	64	248	107
+8	33	404	213.6667	8	33	404	213.6667	6	20	214	6	20	315	279
+8	33	404	213.6667	8	33	404	213.6667	8	33	114	8	80	800	314
+8	33	404	213.6667	8	33	404	213.6667	6	20	214	6	23	303	909
+explain select * from v1,v2,v3,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33)) 
+and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	test.t2.a	2	Using where
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (incremental, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+explain format=json select * from v1,v2,v3,t2 where 
+((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33)) 
+and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v3.b < 50 or v3.b = 33",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "min_c > 109",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 10 and (t1.b < 50 or t1.b = 33)"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived3>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v2.max_c > 300"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "max_c < 707 and max_c > 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.max_c < 500"
+      },
+      "buffer_type": "incremental",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = v2.a or v1.a = t2.a",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c < 500",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : pushing in all tables
+# conjunctive subformulas : pushing into HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
+a	b	max_c	avg_c	a	b	min_c	a	b	c	d
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
+a	b	max_c	avg_c	a	b	min_c	a	b	c	d
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key1	key1	5	test.t2.b	2	Using where
+1	PRIMARY	<derived3>	ref	key0	key0	5	v1.a	2	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key1"],
+      "key": "key1",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.max_c > 130 and v1.a is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 130",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["v1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.min_c < 130",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "min_c < 707 and min_c < 130",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using several derived tables : pushing in all tables
+# extracted or formulas : pushing into HAVING
+# conjunctive subformula : pushing into HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+(select a, b, avg(c) as avg_c from t1
+where t1.a<8 group by a,b) v3,
+t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
+and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
+a	b	max_c	avg_c	a	b	min_c	a	b	avg_c	a	b	c	d
+8	33	404	213.6667	8	33	114	1	33	497.5000	2	3	207	207
+8	33	404	213.6667	8	33	114	1	33	497.5000	1	21	909	12
+8	33	404	213.6667	8	33	114	1	33	497.5000	7	13	312	406
+8	33	404	213.6667	8	33	114	1	33	497.5000	8	64	248	107
+8	33	404	213.6667	8	33	114	1	33	497.5000	6	20	315	279
+8	33	404	213.6667	8	33	114	1	33	497.5000	1	19	203	107
+8	33	404	213.6667	8	33	114	1	33	497.5000	8	80	800	314
+8	33	404	213.6667	8	33	114	1	33	497.5000	3	12	231	190
+8	33	404	213.6667	8	33	114	1	33	497.5000	6	23	303	909
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+(select a, b, avg(c) as avg_c from t1
+where t1.a<8 group by a,b) v3,
+t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
+and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
+a	b	max_c	avg_c	a	b	min_c	a	b	avg_c	a	b	c	d
+8	33	404	213.6667	8	33	114	1	33	497.5000	2	3	207	207
+8	33	404	213.6667	8	33	114	1	33	497.5000	1	21	909	12
+8	33	404	213.6667	8	33	114	1	33	497.5000	7	13	312	406
+8	33	404	213.6667	8	33	114	1	33	497.5000	8	64	248	107
+8	33	404	213.6667	8	33	114	1	33	497.5000	6	20	315	279
+8	33	404	213.6667	8	33	114	1	33	497.5000	1	19	203	107
+8	33	404	213.6667	8	33	114	1	33	497.5000	8	80	800	314
+8	33	404	213.6667	8	33	114	1	33	497.5000	3	12	231	190
+8	33	404	213.6667	8	33	114	1	33	497.5000	6	23	303	909
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+(select a, b, avg(c) as avg_c from t1
+where t1.a<8 group by a,b) v3,
+t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
+and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived3>	ref	key0	key0	5	v1.a	2	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	v1.b	2	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1,
+(select a, b, min(c) as min_c from t1
+where t1.a>5 group by a,b having min_c < 707) v2,
+(select a, b, avg(c) as avg_c from t1
+where t1.a<8 group by a,b) v3,
+t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
+and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.avg_c < 400 or v1.a > 1"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "(v1.avg_c < 400 or v1.a > 1) and v1.a is not null and v1.b is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (avg_c < 400 or t1.a > 1)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["v1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.min_c < 200",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "min_c < 707 and min_c < 200",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v1.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v3.avg_c > 170 or v3.a < 5",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "avg_c > 170 or t1.a < 5",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a < 8"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted or formula : pushing into HAVING
+# conjunctive subformula : pushing into WHERE        
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
+a	b	max_c	avg_c	a	b	c	d
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	7	13	312	406
+5	27	132	132.0000	8	64	248	107
+5	27	132	132.0000	6	20	315	279
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	8	80	800	314
+5	27	132	132.0000	3	12	231	190
+5	27	132	132.0000	6	23	303	909
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
+a	b	max_c	avg_c	a	b	c	d
+5	27	132	132.0000	2	3	207	207
+5	27	132	132.0000	1	21	909	12
+5	27	132	132.0000	7	13	312	406
+5	27	132	132.0000	8	64	248	107
+5	27	132	132.0000	6	20	315	279
+5	27	132	132.0000	1	19	203	107
+5	27	132	132.0000	8	80	800	314
+5	27	132	132.0000	3	12	231	190
+5	27	132	132.0000	6	23	303	909
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+group by a,b having max_c < 707) v1, 
+t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "(v1.a = 1 or v1.max_c < 300) and v1.b > 25"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.a = 1 or v1.max_c < 300",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and (t1.a = 1 or max_c < 300)",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.b > 25"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# extracted and formula : pushing into WHERE
+# conjunctive subformula : pushing into HAVING          
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
+a	b	max_c	avg_c	a	b	c	d
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+explain select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+(select a, b, max(c) as max_c, avg(c) as avg_c from t1
+where t1.a>5 group by a,b having max_c < 707) v1, 
+t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.max_c > 300 and v1.b < 30",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 707 and max_c > 300",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b < 30"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using query with union
+# conjunctive subformula : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING and WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
+union
+select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
+union
+select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
+a	b	max_c	avg_c	a	b	c	d
+1	21	500	234.6000	1	21	909	12
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
+union
+select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived3>	ref	key0	key0	5	test.t2.b	2	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	UNION	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+2	UNION	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
+union
+select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
+EXPLAIN
+{
+  "query_block": {
+    "union_result": {
+      "table_name": "<union1,2>",
+      "access_type": "ALL",
+      "query_specifications": [
+        {
+          "query_block": {
+            "select_id": 1,
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.c > 800 and t2.b is not null"
+            },
+            "table": {
+              "table_name": "<derived3>",
+              "access_type": "ref",
+              "possible_keys": ["key0"],
+              "key": "key0",
+              "key_length": "5",
+              "used_key_parts": ["b"],
+              "ref": ["test.t2.b"],
+              "rows": 2,
+              "filtered": 100,
+              "attached_condition": "v1.a < 5",
+              "materialized": {
+                "query_block": {
+                  "select_id": 3,
+                  "having_condition": "max_c < 707",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "query_block": {
+            "select_id": 2,
+            "operation": "UNION",
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.d > 800"
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived4>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.max_c > 100 and v1.a > 7"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "materialized": {
+                "query_block": {
+                  "select_id": 4,
+                  "having_condition": "max_c < 707 and max_c > 100",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 7"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
+# using query with union
+# extracted and formula : pushing into WHERE   
+# extracted or formula : pushing into HAVING    
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
+union 
+select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	8	64	248	107
+6	20	315	279.3333	8	80	800	314
+select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
+union 
+select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	2	3	207	207
+1	21	500	234.6000	7	13	312	406
+1	21	500	234.6000	8	64	248	107
+1	21	500	234.6000	6	20	315	279
+1	21	500	234.6000	8	80	800	314
+1	21	500	234.6000	3	12	231	190
+1	21	500	234.6000	6	23	303	909
+6	20	315	279.3333	7	13	312	406
+6	20	315	279.3333	8	64	248	107
+6	20	315	279.3333	8	80	800	314
+explain select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
+union 
+select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	UNION	t2	ALL	NULL	NULL	NULL	NULL	9	
+2	UNION	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
+union 
+select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
+EXPLAIN
+{
+  "query_block": {
+    "union_result": {
+      "table_name": "<union1,2>",
+      "access_type": "ALL",
+      "query_specifications": [
+        {
+          "query_block": {
+            "select_id": 1,
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.b = 19"
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.b = 19 and v1.a < 5"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "materialized": {
+                "query_block": {
+                  "select_id": 3,
+                  "having_condition": "max_c < 707",
+                  "filesort": {
+                    "sort_key": "t1.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.b = 19 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "query_block": {
+            "select_id": 2,
+            "operation": "UNION",
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived4>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.max_c > 400 or v1.avg_c > 270"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "attached_condition": "(v1.max_c > 400 or v1.avg_c > 270) and v1.a < t2.a",
+              "materialized": {
+                "query_block": {
+                  "select_id": 4,
+                  "having_condition": "max_c < 707 and (max_c > 400 or avg_c > 270)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
+# using query with union
+# extracted or formula : pushing into HAVING 
+# extracted or formula : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
+union
+select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+select * from v1,t2 where 
+((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
+union
+select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+1	21	500	234.6000	1	21	909	12
+1	21	500	234.6000	1	19	203	107
+6	20	315	279.3333	6	20	315	279
+6	20	315	279.3333	6	23	303	909
+8	33	404	213.6667	2	3	207	207
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	7	13	312	406
+8	33	404	213.6667	8	64	248	107
+8	33	404	213.6667	6	20	315	279
+8	33	404	213.6667	1	19	203	107
+8	33	404	213.6667	8	80	800	314
+8	33	404	213.6667	3	12	231	190
+8	33	404	213.6667	6	23	303	909
+explain select * from v1,t2 where 
+((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
+union
+select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	UNION	t2	ALL	NULL	NULL	NULL	NULL	9	
+2	UNION	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where 
+((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
+union
+select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
+EXPLAIN
+{
+  "query_block": {
+    "union_result": {
+      "table_name": "<union1,2>",
+      "access_type": "ALL",
+      "query_specifications": [
+        {
+          "query_block": {
+            "select_id": 1,
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a = 1 or v1.a = 6"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "attached_condition": "(v1.a = t2.a or v1.b = t2.b) and (v1.a = 1 or v1.a = 6)",
+              "materialized": {
+                "query_block": {
+                  "select_id": 3,
+                  "having_condition": "max_c < 707",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1 or t1.a = 6"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "query_block": {
+            "select_id": 2,
+            "operation": "UNION",
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived4>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a > 3 and v1.b > 27 or v1.max_c > 550"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "attached_condition": "v1.a > 3 and v1.b > 27 or v1.max_c > 550",
+              "materialized": {
+                "query_block": {
+                  "select_id": 4,
+                  "having_condition": "max_c < 707 and (t1.a > 3 and t1.b > 27 or max_c > 550)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
+# using query with union
+# extracted or formula : pushing into HAVING 
+# conjunctive subformulas : pushing into WHERE 
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where 
+((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
+union
+select * from v2,t2 where
+((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
+union
+select * from v2,t2 where
+(v2.max_c=t2.c) and (v2.b<10);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+6	20	315	279.3333	1	21	909	12
+6	20	315	279.3333	1	19	203	107
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	1	19	203	107
+select * from v1,t2 where 
+((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
+union
+select * from v2,t2 where
+((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
+union
+select * from v2,t2 where
+(v2.max_c=t2.c) and (v2.b<10);
+a	b	max_c	avg_c	a	b	c	d
+1	19	107	107.0000	1	21	909	12
+1	19	107	107.0000	1	19	203	107
+6	20	315	279.3333	1	21	909	12
+6	20	315	279.3333	1	19	203	107
+8	33	404	213.6667	1	21	909	12
+8	33	404	213.6667	1	19	203	107
+explain select * from v1,t2 where 
+((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
+union
+select * from v2,t2 where
+((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
+union
+select * from v2,t2 where
+(v2.max_c=t2.c) and (v2.b<10);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	UNION	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+2	UNION	<derived5>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+5	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+3	UNION	<derived6>	ref	key0	key0	5	test.t2.c	2	Using where
+6	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union1,2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where 
+((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
+union
+select * from v2,t2 where
+((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
+union
+select * from v2,t2 where
+(v2.max_c=t2.c) and (v2.b<10);
+EXPLAIN
+{
+  "query_block": {
+    "union_result": {
+      "table_name": "<union1,2,3>",
+      "access_type": "ALL",
+      "query_specifications": [
+        {
+          "query_block": {
+            "select_id": 1,
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.a = 1"
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived4>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a = 1 and (v1.max_c < 500 or v1.avg_c > 500)"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "attached_condition": "v1.max_c < 500 or v1.avg_c > 500",
+              "materialized": {
+                "query_block": {
+                  "select_id": 4,
+                  "having_condition": "max_c < 707 and (max_c < 500 or avg_c > 500)",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "query_block": {
+            "select_id": 2,
+            "operation": "UNION",
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.a < 2"
+            },
+            "block-nl-join": {
+              "table": {
+                "table_name": "<derived5>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v2.b > 10"
+              },
+              "buffer_type": "flat",
+              "buffer_size": "256Kb",
+              "join_type": "BNL",
+              "attached_condition": "v2.a < t2.b or v2.max_c > 200",
+              "materialized": {
+                "query_block": {
+                  "select_id": 5,
+                  "having_condition": "max_c < 707",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 5 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        {
+          "query_block": {
+            "select_id": 3,
+            "operation": "UNION",
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.c is not null"
+            },
+            "table": {
+              "table_name": "<derived6>",
+              "access_type": "ref",
+              "possible_keys": ["key0"],
+              "key": "key0",
+              "key_length": "5",
+              "used_key_parts": ["max_c"],
+              "ref": ["test.t2.c"],
+              "rows": 2,
+              "filtered": 100,
+              "attached_condition": "v2.b < 10",
+              "materialized": {
+                "query_block": {
+                  "select_id": 6,
+                  "having_condition": "max_c < 707",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 5 and t1.b < 10"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      ]
+    }
+  }
+}
+# using derived table with union
+# conjunctive subformulas : pushing into WHERE and HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
+a	b	c	a	b	c	d
+1	19	107	2	3	207	207
+1	19	107	1	21	909	12
+1	19	107	7	13	312	406
+1	19	107	8	64	248	107
+1	19	107	6	20	315	279
+1	19	107	1	19	203	107
+1	19	107	8	80	800	314
+1	19	107	3	12	231	190
+1	19	107	6	23	303	909
+select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
+a	b	c	a	b	c	d
+1	19	107	2	3	207	207
+1	19	107	1	21	909	12
+1	19	107	7	13	312	406
+1	19	107	8	64	248	107
+1	19	107	6	20	315	279
+1	19	107	1	19	203	107
+1	19	107	8	80	800	314
+1	19	107	3	12	231	190
+1	19	107	6	23	303	909
+explain select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	40	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 40,
+        "filtered": 100,
+        "attached_condition": "v_union.a < 3 and v_union.c > 100"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109 and c > 100",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 10 and t1.a < 3"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c > 100",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a < 3"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union
+# conjunctive subformula : pushing into WHERE
+# extracted or formula : pushing into HAVING 
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_union,t2 where
+((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
+a	b	c	a	b	c	d
+1	19	107	2	3	207	207
+1	19	107	1	21	909	12
+1	19	107	7	13	312	406
+1	19	107	8	64	248	107
+1	19	107	6	20	315	279
+1	19	107	1	19	203	107
+1	19	107	8	80	800	314
+1	19	107	3	12	231	190
+1	19	107	6	23	303	909
+select * from v_union,t2 where
+((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
+a	b	c	a	b	c	d
+1	19	107	2	3	207	207
+1	19	107	1	21	909	12
+1	19	107	7	13	312	406
+1	19	107	8	64	248	107
+1	19	107	6	20	315	279
+1	19	107	1	19	203	107
+1	19	107	8	80	800	314
+1	19	107	3	12	231	190
+1	19	107	6	23	303	909
+explain select * from v_union,t2 where
+((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	40	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v_union,t2 where
+((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 40,
+        "filtered": 100,
+        "attached_condition": "(v_union.a < 2 or v_union.c > 800) and v_union.b > 12"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v_union.a < 2 or v_union.c > 800",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109 and (t1.a < 2 or c > 800)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 10 and t1.b > 12"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and (t1.a < 2 or c > 800)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.b > 12"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union
+# conjunctive subformula : pushing into HAVING
+# conjunctive subformula : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_union,t2 where
+(v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
+a	b	c	a	b	c	d
+1	19	107	1	21	909	12
+1	19	107	1	19	203	107
+select * from v_union,t2 where
+(v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
+a	b	c	a	b	c	d
+1	19	107	1	21	909	12
+1	19	107	1	19	203	107
+explain select * from v_union,t2 where
+(v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	40	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v_union,t2 where
+(v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 1"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 40,
+        "filtered": 100,
+        "attached_condition": "v_union.a = 1 and v_union.c < 200"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (v.b='Vika') and (v.max_c>2);
+a	b	max_c	a	b	c
+c	Vika	7	c	Vinny	3
+c	Vika	7	c	Inga	9
+c	Vika	7	c	Ivan	2
+c	Vika	7	c	Inga	2
+select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (v.b='Vika') and (v.max_c>2);
+a	b	max_c	a	b	c
+c	Vika	7	c	Vinny	3
+c	Vika	7	c	Inga	9
+c	Vika	7	c	Ivan	2
+c	Vika	7	c	Inga	2
+explain select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (v.b='Vika') and (v.max_c>2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t	ALL	NULL	NULL	NULL	NULL	12	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	2	test.t.a	2	Using where
+2	DERIVED	t1_char	ALL	NULL	NULL	NULL	NULL	12	Using where; Using temporary; Using filesort
+explain format=json select * from v_char as v,t2_char as t where 
+(v.a=t.a) and (v.b='Vika') and (v.max_c>2);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t",
+      "access_type": "ALL",
+      "rows": 12,
+      "filtered": 100,
+      "attached_condition": "t.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "2",
+      "used_key_parts": ["a"],
+      "ref": ["test.t.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v.b = 'Vika' and v.max_c > 2",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "max_c < 9 and max_c > 2",
+          "filesort": {
+            "sort_key": "t1_char.a",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1_char",
+                "access_type": "ALL",
+                "rows": 12,
+                "filtered": 100,
+                "attached_condition": "t1_char.b = 'Vika'"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union
+# using several derived tables : pushing in all tables
+# conjunctive subformula : pushing into WHERE using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v_union,v1,t2 where
+(v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1) 
+and ((v_union.c>800) or (v1.max_c>200));
+a	b	c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	1	21	500	234.6000	1	21	909	12
+1	19	107	1	21	500	234.6000	1	19	203	107
+select * from v_union,v1,t2 where
+(v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1) 
+and ((v_union.c>800) or (v1.max_c>200));
+a	b	c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	1	21	500	234.6000	1	21	909	12
+1	19	107	1	21	500	234.6000	1	19	203	107
+explain select * from v_union,v1,t2 where
+(v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1) 
+and ((v_union.c>800) or (v1.max_c>200));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	40	Using where; Using join buffer (incremental, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v_union,v1,t2 where
+(v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1) 
+and ((v_union.c>800) or (v1.max_c>200));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 1"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived4>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a = 1"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a = 1"
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 40,
+        "filtered": 100,
+        "attached_condition": "v_union.a = 1"
+      },
+      "buffer_type": "incremental",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v_union.c > 800 or v1.max_c > 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 1 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union   
+# extracted or formula : pushing into WHERE    
+# conjunctive subformula : pushing into HAVING
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v2_union as v,t2 where 
+((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
+a	b	c	a	b	c	d
+8	33	404.0000	8	64	248	107
+6	20	312.0000	6	20	315	279
+6	20	214.0000	6	20	315	279
+8	33	404.0000	8	80	800	314
+6	20	312.0000	6	23	303	909
+6	20	214.0000	6	23	303	909
+select * from v2_union as v,t2 where 
+((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
+a	b	c	a	b	c	d
+8	33	404.0000	8	64	248	107
+6	20	312.0000	6	20	315	279
+6	20	214.0000	6	20	315	279
+8	33	404.0000	8	80	800	314
+6	20	312.0000	6	23	303	909
+6	20	214.0000	6	23	303	909
+explain select * from v2_union as v,t2 where 
+((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	6	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+4	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v2_union as v,t2 where 
+((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "(t2.a = 6 or t2.a = 8) and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 6,
+      "filtered": 100,
+      "attached_condition": "v.c > 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 10 and (t1.a = 6 or t1.a = 8)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.a = 6 or t1.a = 8)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "UNION",
+                  "having_condition": "c < 707 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.c > 300 and (t1.a = 6 or t1.a = 8)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union of selects without aggregation
+# extracted conjunctive predicate: pushing in WHERE of both selects
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
+a	b	c	a	b	c	d
+1	21	123	1	21	909	12
+1	21	101	1	21	909	12
+1	21	104	1	21	909	12
+1	33	988	1	21	909	12
+1	19	107	1	21	909	12
+1	21	500	1	21	909	12
+1	21	345	1	21	909	12
+7	11	708	7	13	312	406
+7	11	8	7	13	312	406
+8	33	404	8	64	248	107
+8	33	123	8	64	248	107
+8	33	114	8	64	248	107
+8	33	9	8	64	248	107
+6	20	214	6	20	315	279
+6	20	315	6	20	315	279
+6	20	309	6	20	315	279
+6	20	7	6	20	315	279
+1	21	123	1	19	203	107
+1	21	101	1	19	203	107
+1	21	104	1	19	203	107
+1	33	988	1	19	203	107
+1	19	107	1	19	203	107
+1	21	500	1	19	203	107
+1	21	345	1	19	203	107
+8	33	404	8	80	800	314
+8	33	123	8	80	800	314
+8	33	114	8	80	800	314
+8	33	9	8	80	800	314
+6	20	214	6	23	303	909
+6	20	315	6	23	303	909
+6	20	309	6	23	303	909
+6	20	7	6	23	303	909
+select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
+a	b	c	a	b	c	d
+1	21	123	1	21	909	12
+1	21	101	1	21	909	12
+1	21	104	1	21	909	12
+1	33	988	1	21	909	12
+1	19	107	1	21	909	12
+1	21	500	1	21	909	12
+1	21	345	1	21	909	12
+7	11	708	7	13	312	406
+7	11	8	7	13	312	406
+8	33	404	8	64	248	107
+8	33	123	8	64	248	107
+8	33	114	8	64	248	107
+8	33	9	8	64	248	107
+6	20	214	6	20	315	279
+6	20	315	6	20	315	279
+6	20	309	6	20	315	279
+6	20	7	6	20	315	279
+1	21	123	1	19	203	107
+1	21	101	1	19	203	107
+1	21	104	1	19	203	107
+1	33	988	1	19	203	107
+1	19	107	1	19	203	107
+1	21	500	1	19	203	107
+1	21	345	1	19	203	107
+8	33	404	8	80	800	314
+8	33	123	8	80	800	314
+8	33	114	8	80	800	314
+8	33	9	8	80	800	314
+6	20	214	6	23	303	909
+6	20	315	6	23	303	909
+6	20	309	6	23	303	909
+6	20	7	6	23	303	909
+explain select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	4	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 4,
+      "filtered": 100,
+      "attached_condition": "v.c > 6",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.a < 10 and t1.a + 1 > 6"
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.b > 10 and t1.c > 100 and t1.c > 6"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union of selects without aggregation
+# extracted conjunctive OR subformula: pushing in WHERE using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
+a	b	c	a	b	c	d
+1	19	107	1	21	909	12
+1	19	2	1	21	909	12
+7	11	708	7	13	312	406
+7	11	8	7	13	312	406
+8	33	404	8	64	248	107
+8	33	123	8	64	248	107
+8	33	114	8	64	248	107
+8	33	9	8	64	248	107
+6	20	214	6	20	315	279
+6	20	315	6	20	315	279
+6	20	309	6	20	315	279
+6	20	7	6	20	315	279
+1	19	107	1	19	203	107
+1	19	2	1	19	203	107
+8	33	404	8	80	800	314
+8	33	123	8	80	800	314
+8	33	114	8	80	800	314
+8	33	9	8	80	800	314
+6	20	214	6	23	303	909
+6	20	315	6	23	303	909
+6	20	309	6	23	303	909
+6	20	7	6	23	303	909
+select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
+a	b	c	a	b	c	d
+1	19	107	1	21	909	12
+1	19	2	1	21	909	12
+7	11	708	7	13	312	406
+7	11	8	7	13	312	406
+8	33	404	8	64	248	107
+8	33	123	8	64	248	107
+8	33	114	8	64	248	107
+8	33	9	8	64	248	107
+6	20	214	6	20	315	279
+6	20	315	6	20	315	279
+6	20	309	6	20	315	279
+6	20	7	6	20	315	279
+1	19	107	1	19	203	107
+1	19	2	1	19	203	107
+8	33	404	8	80	800	314
+8	33	123	8	80	800	314
+8	33	114	8	80	800	314
+8	33	9	8	80	800	314
+6	20	214	6	23	303	909
+6	20	315	6	23	303	909
+6	20	309	6	23	303	909
+6	20	7	6	23	303	909
+explain select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	4	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 4,
+      "filtered": 100,
+      "attached_condition": "t2.a > 1 or v.b < 20",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.a < 10 and (t1.a > 1 or t1.b < 20)"
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.b > 10 and t1.c > 100 and (t1.a > 1 or t1.b < 20)"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union of selects without aggregation
+# extracted the whole condition: in WHERE of both selects
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v3_union as v,t2 where 
+(v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
+a	b	c	a	b	c	d
+1	19	2	1	21	909	12
+1	21	2	1	21	909	12
+1	19	2	1	19	203	107
+1	21	2	1	19	203	107
+select * from v3_union as v,t2 where 
+(v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
+a	b	c	a	b	c	d
+1	19	2	1	21	909	12
+1	21	2	1	21	909	12
+1	19	2	1	19	203	107
+1	21	2	1	19	203	107
+explain select * from v3_union as v,t2 where 
+(v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	4	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v3_union as v,t2 where 
+(v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 4,
+      "filtered": 100,
+      "attached_condition": "(v.b = 19 or v.b = 21) and (v.c < 3 or v.c > 600)",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.a < 10 and (t1.b = 19 or t1.b = 21) and (t1.a + 1 < 3 or t1.a + 1 > 600)"
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.b > 10 and t1.c > 100 and (t1.b = 19 or t1.b = 21) and (t1.c < 3 or t1.c > 600)"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union of 
+# a select without aggregation and a select with aggregation
+# extracted conjunctive predicate: pushing in WHERE of both selects
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
+a	b	c	a	b	c	d
+1	19	207	1	21	909	12
+7	11	808	7	13	312	406
+7	11	608	7	13	312	406
+1	19	207	1	19	203	107
+select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
+a	b	c	a	b	c	d
+1	19	207	1	21	909	12
+7	11	808	7	13	312	406
+7	11	608	7	13	312	406
+1	19	207	1	19	203	107
+explain select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	4	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 4,
+      "filtered": 100,
+      "attached_condition": "v.b < 20",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 10 and t1.b < 20"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.b > 10 and t1.b < 20"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using derived table with union of 
+# a select without aggregation and a select with aggregation
+# extracted subformula: pushing in WHERE of one select
+# extracted subformula: pushing in HAVING of the other select
+# extracted sub-subformula: pushing in WHERE of the other select
+# using an equality in all pushdowns
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4_union as v,t2 where 
+(v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
+a	b	c	a	b	c	d
+1	33	1088	1	21	909	12
+1	21	600	1	21	909	12
+1	33	888	1	21	909	12
+7	11	808	7	13	312	406
+7	11	608	7	13	312	406
+8	33	504	8	64	248	107
+1	33	1088	1	19	203	107
+1	21	600	1	19	203	107
+1	33	888	1	19	203	107
+8	33	504	8	80	800	314
+select * from v4_union as v,t2 where 
+(v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
+a	b	c	a	b	c	d
+1	33	1088	1	21	909	12
+1	21	600	1	21	909	12
+1	33	888	1	21	909	12
+7	11	808	7	13	312	406
+7	11	608	7	13	312	406
+8	33	504	8	64	248	107
+1	33	1088	1	19	203	107
+1	21	600	1	19	203	107
+1	33	888	1	19	203	107
+8	33	504	8	80	800	314
+explain select * from v4_union as v,t2 where 
+(v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	4	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	20	Using where
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v4_union as v,t2 where 
+(v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 4,
+      "filtered": 100,
+      "attached_condition": "(t2.a < 3 or v.b < 40) and v.c > 500",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 109 and c > 500",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 10 and (t1.a < 3 or t1.b < 40)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t1",
+                    "access_type": "ALL",
+                    "rows": 20,
+                    "filtered": 100,
+                    "attached_condition": "t1.b > 10 and (t1.a < 3 or t1.b < 40) and t1.c + 100 > 500"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded derived table : pushing the same conditions
+# using several derived tables : pushing in all tables
+# conjunctive subformula : pushing into WHERE
+# extracted and formula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v1 where
+(v4.a<13) and (v1.a>5) and (v1.b>12);
+a	b	min_c	a	b	max_c	avg_c
+1	19	107	6	20	315	279.3333
+1	21	500	6	20	315	279.3333
+5	16	207	6	20	315	279.3333
+5	27	132	6	20	315	279.3333
+6	20	315	6	20	315	279.3333
+8	33	404	6	20	315	279.3333
+1	19	107	8	33	404	213.6667
+1	21	500	8	33	404	213.6667
+5	16	207	8	33	404	213.6667
+5	27	132	8	33	404	213.6667
+6	20	315	8	33	404	213.6667
+8	33	404	8	33	404	213.6667
+select * from v4,v1 where
+(v4.a<13) and (v1.a>5) and (v1.b>12);
+a	b	min_c	a	b	max_c	avg_c
+1	19	107	6	20	315	279.3333
+1	21	500	6	20	315	279.3333
+5	16	207	6	20	315	279.3333
+5	27	132	6	20	315	279.3333
+6	20	315	6	20	315	279.3333
+8	33	404	6	20	315	279.3333
+1	19	107	8	33	404	213.6667
+1	21	500	8	33	404	213.6667
+5	16	207	8	33	404	213.6667
+5	27	132	8	33	404	213.6667
+6	20	315	8	33	404	213.6667
+8	33	404	8	33	404	213.6667
+explain select * from v4,v1 where
+(v4.a<13) and (v1.a>5) and (v1.b>12);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v1 where
+(v4.a<13) and (v1.a>5) and (v1.b>12);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "v4.a < 13",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and v1.a < 13",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and t1.a < 13"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived4>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v1.a > 5 and v1.b > 12"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b > 12"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : nothing to push
+# using several derived tables : pushing only in one table
+# conjunctive subformula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+8	33	404	8	33	404	213.6667	8	64	248	107
+8	33	404	8	33	404	213.6667	8	80	800	314
+select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+8	33	404	8	33	404	213.6667	8	64	248	107
+8	33	404	8	33	404	213.6667	8	80	800	314
+explain select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key1	key1	5	test.t2.a	2	
+1	PRIMARY	<derived4>	ref	key0	key0	5	test.t2.a	2	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key1"],
+      "key": "key1",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b > 30",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.b > 30"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing different conditions
+# using several derived tables : pushing in all tables
+# conjunctive subformula : pushing into WHERE using equalities
+# extracted and formula : pushing into WHERE using equalities
+# conjunctive subformula : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	6	20	315	279.3333	6	23	303	909
+select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	6	20	315	279.3333	6	23	303	909
+explain select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key1	key1	5	test.t2.a	2	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	test.t2.a	2	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v1,t2 where
+(v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 1 and t2.a is not null and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key1"],
+      "key": "key1",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v4.min_c > 100",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "min_c > 100",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and v1.a > 1",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and t1.a > 1"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b < 30",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 1 and t1.b < 30"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing different conditions
+# using several derived tables : pushing in all tables
+# extracted or formula : pushing into WHERE
+# conjunctive subformula : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v1,t2 where
+(((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	1	21	500	234.6000	2	3	207	207
+1	19	107	1	21	500	234.6000	1	21	909	12
+1	19	107	1	21	500	234.6000	7	13	312	406
+1	19	107	1	21	500	234.6000	8	64	248	107
+1	19	107	1	21	500	234.6000	6	20	315	279
+1	19	107	1	21	500	234.6000	1	19	203	107
+1	19	107	1	21	500	234.6000	8	80	800	314
+1	19	107	1	21	500	234.6000	3	12	231	190
+1	19	107	1	21	500	234.6000	6	23	303	909
+5	16	207	5	16	207	207.0000	2	3	207	207
+5	16	207	5	16	207	207.0000	1	21	909	12
+5	16	207	5	16	207	207.0000	7	13	312	406
+5	16	207	5	16	207	207.0000	8	64	248	107
+5	16	207	5	16	207	207.0000	6	20	315	279
+5	16	207	5	16	207	207.0000	1	19	203	107
+5	16	207	5	16	207	207.0000	8	80	800	314
+5	16	207	5	16	207	207.0000	3	12	231	190
+5	16	207	5	16	207	207.0000	6	23	303	909
+5	27	132	5	16	207	207.0000	2	3	207	207
+5	27	132	5	16	207	207.0000	1	21	909	12
+5	27	132	5	16	207	207.0000	7	13	312	406
+5	27	132	5	16	207	207.0000	8	64	248	107
+5	27	132	5	16	207	207.0000	6	20	315	279
+5	27	132	5	16	207	207.0000	1	19	203	107
+5	27	132	5	16	207	207.0000	8	80	800	314
+5	27	132	5	16	207	207.0000	3	12	231	190
+5	27	132	5	16	207	207.0000	6	23	303	909
+6	20	315	6	20	315	279.3333	2	3	207	207
+6	20	315	6	20	315	279.3333	1	21	909	12
+6	20	315	6	20	315	279.3333	7	13	312	406
+6	20	315	6	20	315	279.3333	8	64	248	107
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	6	20	315	279.3333	1	19	203	107
+6	20	315	6	20	315	279.3333	8	80	800	314
+6	20	315	6	20	315	279.3333	3	12	231	190
+6	20	315	6	20	315	279.3333	6	23	303	909
+8	33	404	8	33	404	213.6667	2	3	207	207
+8	33	404	8	33	404	213.6667	1	21	909	12
+8	33	404	8	33	404	213.6667	7	13	312	406
+8	33	404	8	33	404	213.6667	8	64	248	107
+8	33	404	8	33	404	213.6667	6	20	315	279
+8	33	404	8	33	404	213.6667	1	19	203	107
+8	33	404	8	33	404	213.6667	8	80	800	314
+8	33	404	8	33	404	213.6667	3	12	231	190
+8	33	404	8	33	404	213.6667	6	23	303	909
+select * from v4,v1,t2 where
+(((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+1	19	107	1	21	500	234.6000	2	3	207	207
+1	19	107	1	21	500	234.6000	1	21	909	12
+1	19	107	1	21	500	234.6000	7	13	312	406
+1	19	107	1	21	500	234.6000	8	64	248	107
+1	19	107	1	21	500	234.6000	6	20	315	279
+1	19	107	1	21	500	234.6000	1	19	203	107
+1	19	107	1	21	500	234.6000	8	80	800	314
+1	19	107	1	21	500	234.6000	3	12	231	190
+1	19	107	1	21	500	234.6000	6	23	303	909
+5	16	207	5	16	207	207.0000	2	3	207	207
+5	16	207	5	16	207	207.0000	1	21	909	12
+5	16	207	5	16	207	207.0000	7	13	312	406
+5	16	207	5	16	207	207.0000	8	64	248	107
+5	16	207	5	16	207	207.0000	6	20	315	279
+5	16	207	5	16	207	207.0000	1	19	203	107
+5	16	207	5	16	207	207.0000	8	80	800	314
+5	16	207	5	16	207	207.0000	3	12	231	190
+5	16	207	5	16	207	207.0000	6	23	303	909
+5	27	132	5	16	207	207.0000	2	3	207	207
+5	27	132	5	16	207	207.0000	1	21	909	12
+5	27	132	5	16	207	207.0000	7	13	312	406
+5	27	132	5	16	207	207.0000	8	64	248	107
+5	27	132	5	16	207	207.0000	6	20	315	279
+5	27	132	5	16	207	207.0000	1	19	203	107
+5	27	132	5	16	207	207.0000	8	80	800	314
+5	27	132	5	16	207	207.0000	3	12	231	190
+5	27	132	5	16	207	207.0000	6	23	303	909
+6	20	315	6	20	315	279.3333	2	3	207	207
+6	20	315	6	20	315	279.3333	1	21	909	12
+6	20	315	6	20	315	279.3333	7	13	312	406
+6	20	315	6	20	315	279.3333	8	64	248	107
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	6	20	315	279.3333	1	19	203	107
+6	20	315	6	20	315	279.3333	8	80	800	314
+6	20	315	6	20	315	279.3333	3	12	231	190
+6	20	315	6	20	315	279.3333	6	23	303	909
+8	33	404	8	33	404	213.6667	2	3	207	207
+8	33	404	8	33	404	213.6667	1	21	909	12
+8	33	404	8	33	404	213.6667	7	13	312	406
+8	33	404	8	33	404	213.6667	8	64	248	107
+8	33	404	8	33	404	213.6667	6	20	315	279
+8	33	404	8	33	404	213.6667	1	19	203	107
+8	33	404	8	33	404	213.6667	8	80	800	314
+8	33	404	8	33	404	213.6667	3	12	231	190
+8	33	404	8	33	404	213.6667	6	23	303	909
+explain select * from v4,v1,t2 where
+(((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using join buffer (flat, BNL join)
+1	PRIMARY	<derived4>	ref	key0	key0	5	v4.a	2	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v1,t2 where
+(((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100,
+        "attached_condition": "v4.b > 10 and v4.a > 1 or v4.b < 20"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "(v4.b > 10 and v4.a > 1 or v4.b < 20) and v4.a is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and (v1.b > 10 and v1.a > 1 or v1.b < 20)",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and (t1.b > 10 and t1.a > 1 or t1.b < 20)"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["v4.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.max_c > 200",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707 and max_c > 200",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing different conditions
+# using several derived tables : pushing only in one table
+# extracted or formula : pushing into WHERE
+# extracted or formula : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2 where
+((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
+a	b	min_c	a	b	max_c	avg_c
+select * from v4,v2 where
+((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
+a	b	min_c	a	b	max_c	avg_c
+explain select * from v4,v2 where
+((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2 where
+((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "v4.a > 12 and v4.min_c < 300 and v4.b > 13 or v4.a < 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "v1.a > 12 and min_c < 300 and v1.b > 13 or v1.a < 1",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and (v1.a > 12 and v1.b > 13 or v1.a < 1)",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and (t1.a > 12 and t1.b > 13 or t1.a < 1)"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived4>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing different conditions
+# using several derived tables : pushing only in one table
+# conjunctive subformula : pushing into WHERE
+# conjunctive subformula : pushing into HAVING
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
+a	b	min_c	a	b	max_c	avg_c
+select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
+a	b	min_c	a	b	max_c	avg_c
+explain select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	v4.a	2	
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "v4.b = v4.a and v4.min_c < 100 and v4.a is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "min_c < 100",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.b = v1.a and v1.a < 15",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.b = t1.a and t1.a < 15"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v4.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing the same conditions
+# using several derived tables : pushing in all tables
+# extracted and formula : pushing into WHERE using equalities
+# conjunctive subformula : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
+a	b	min_c	a	b	max_c	avg_c
+select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
+a	b	min_c	a	b	max_c	avg_c
+explain select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	v4.a	2	
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "v4.b = v4.a and v4.a < 30 and v4.a is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.b = v1.a and v1.a < 15 and v1.a < 30",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.b = t1.a and t1.a < 15 and t1.a < 30"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v4.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and t1.b < 30"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing the same conditions
+# using several derived tables : pushing in all tables
+# extracted or formula : pushing into WHERE using equalities
+# extracted and formula : pushing into WHERE using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
+a	b	min_c	a	b	max_c	avg_c
+select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
+a	b	min_c	a	b	max_c	avg_c
+explain select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	v4.a	2	
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2 where
+(v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "v4.b = v4.a and (v4.a < 30 or v4.a > 2) and v4.a is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.b = v1.a and v1.a < 15 and (v1.a < 30 or v1.a > 2)",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.b = t1.a and t1.a < 15 and (t1.a < 30 or t1.a > 2)"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["v4.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5 and (t1.b < 30 or t1.b > 2)"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing the same conditions
+# using several derived tables : pushing in all tables
+# extracted or formula : pushing into WHERE
+# conjunctive subformula : pushing into WHERE
+# pushing equalities    
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2 where
+(((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
+(v4.min_c=v2.max_c) and (v4.min_c>100);
+a	b	min_c	a	b	max_c	avg_c
+6	20	315	6	20	315	279.3333
+8	33	404	8	33	404	213.6667
+select * from v4,v2 where
+(((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
+(v4.min_c=v2.max_c) and (v4.min_c>100);
+a	b	min_c	a	b	max_c	avg_c
+6	20	315	6	20	315	279.3333
+8	33	404	8	33	404	213.6667
+explain select * from v4,v2 where
+(((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
+(v4.min_c=v2.max_c) and (v4.min_c>100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+1	PRIMARY	<derived4>	ref	key0	key0	5	v4.min_c	2	
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2 where
+(((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
+(v4.min_c=v2.max_c) and (v4.min_c>100);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "(v4.a < 12 and v4.b > 13 or v4.a > 10) and v4.min_c > 100 and v4.min_c is not null",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "min_c > 100",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and (v1.a < 12 and v1.b > 13 or v1.a > 10)",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and (t1.a < 12 and t1.b > 13 or t1.a > 10)"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived4>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["max_c"],
+      "ref": ["v4.min_c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707 and max_c > 100",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+# using embedded view : pushing the same conditions
+# using several derived tables : pushing only in one table
+# extracted or formula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v4,v2,t2 where
+(((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
+(v4.min_c=t2.c) and (t2.c>100);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	8	33	404	213.6667	6	20	315	279
+select * from v4,v2,t2 where
+(((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
+(v4.min_c=t2.c) and (t2.c>100);
+a	b	min_c	a	b	max_c	avg_c	a	b	c	d
+6	20	315	6	20	315	279.3333	6	20	315	279
+6	20	315	8	33	404	213.6667	6	20	315	279
+explain select * from v4,v2,t2 where
+(((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
+(v4.min_c=t2.c) and (t2.c>100);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.c	2	Using where
+1	PRIMARY	<derived4>	ALL	NULL	NULL	NULL	NULL	20	Using join buffer (flat, BNL join)
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from v4,v2,t2 where
+(((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
+(v4.min_c=t2.c) and (t2.c>100);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.c > 100 and t2.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["min_c"],
+      "ref": ["test.t2.c"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v4.a < 12 and t2.b > 13 or v4.a > 10",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "min_c > 100",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "v1.a < 15 and (v1.a < 12 or v1.a > 10)",
+                "materialized": {
+                  "query_block": {
+                    "select_id": 3,
+                    "having_condition": "max_c < 707",
+                    "filesort": {
+                      "sort_key": "t1.a, t1.b",
+                      "temporary_table": {
+                        "table": {
+                          "table_name": "t1",
+                          "access_type": "ALL",
+                          "rows": 20,
+                          "filtered": 100,
+                          "attached_condition": "t1.a < 15 and (t1.a < 12 or t1.a > 10)"
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived4>",
+        "access_type": "ALL",
+        "rows": 20,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "having_condition": "max_c < 707",
+          "filesort": {
+            "sort_key": "t1.a, t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t1.a > 5"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1,v2,v3,v4;
+drop view v_union,v2_union,v3_union,v4_union;
+drop view v_double,v_char,v_decimal;
+drop table t1,t2,t1_double,t2_double,t1_char,t2_char,t1_decimal,t2_decimal;
+#
+# MDEV-14579: pushdown conditions into materialized views/derived tables
+# that are defined with EXIST or/and INTERSECT
+#
+create table t1 (a int, b int, c int);
+create table t2 (a int, b int, c int);
+insert into t1 values
+(1,21,345), (1,33,7), (8,33,114), (1,21,500), (1,19,117), (5,14,787),
+(8,33,123), (9,10,211), (5,16,207), (1,33,988), (5,27,132), (1,21,104),
+(6,20,309), (6,20,315), (1,21,101), (4,33,404), (9,10,800), (1,21,123);
+insert into t2 values
+(2,3,207), (1,16,909), (5,14,312),
+(5,33,207), (6,20,211), (1,19,132),
+(8,33,117), (3,21,231), (6,23,303);
+create view v1 as
+select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c < 300
+intersect
+select a, b, min(c) as c from t1
+where t1.b>10 group by a,b having c > 100;
+# using intersect in view definition
+# conjunctive subformulas : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+a	b	c	a	b	c
+1	21	101	1	16	909
+1	19	117	1	16	909
+1	21	101	1	19	132
+1	19	117	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+a	b	c	a	b	c
+1	21	101	1	16	909
+1	19	117	1	16	909
+1	21	101	1	19	132
+1	19	117	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# conjunctive subformulas : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a=8);
+a	b	c	a	b	c
+8	33	114	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (v1.a=8);
+a	b	c	a	b	c
+8	33	114	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a=8);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a=8);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 8"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a = 8"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 8"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 8 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# conjunctive subformulas : pushing into WHERE using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (t2.a=8);
+a	b	c	a	b	c
+8	33	114	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (t2.a=8);
+a	b	c	a	b	c
+8	33	114	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (t2.a=8);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (t2.a=8);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 8"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a = 8"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 8"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 8 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# conjunctive subformulas : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.c>200);
+a	b	c	a	b	c
+5	16	207	5	14	312
+5	16	207	5	33	207
+select * from v1,t2 where (v1.a=t2.a) and (v1.c>200);
+a	b	c	a	b	c
+5	16	207	5	14	312
+5	16	207	5	33	207
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.c>200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.c>200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# conjunctive subformulas : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);
+a	b	c	a	b	c
+1	19	117	1	16	909
+1	19	117	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);
+a	b	c	a	b	c
+1	19	117	1	16	909
+1	19	117	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 110",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and c > 110",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100 and c > 110",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# extracted or formula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+a	b	c	a	b	c
+5	16	207	5	14	312
+5	16	207	5	33	207
+8	33	114	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+a	b	c	a	b	c
+5	16	207	5	14	312
+5	16	207	5	33	207
+8	33	114	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b > 27 or v1.b < 19",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.b > 27 or t1.b < 19)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.b > 27 or t1.b < 19)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# extracted or formula : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c>200) or (v1.c<105));
+a	b	c	a	b	c
+1	21	101	1	16	909
+5	16	207	5	14	312
+5	16	207	5	33	207
+1	21	101	1	19	132
+select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c>200) or (v1.c<105));
+a	b	c	a	b	c
+1	21	101	1	16	909
+5	16	207	5	14	312
+5	16	207	5	33	207
+1	21	101	1	19	132
+explain select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c>200) or (v1.c<105));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c>200) or (v1.c<105));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 200 or v1.c < 105",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and (c > 200 or c < 105)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100 and (c > 200 or c < 105)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# extracted or formula : pushing into WHERE
+# extracted or formula : pushing into HAVING using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+((v1.a>3) and (t2.c>110) and (v1.c=t2.c)) or
+((v1.a=1) and (v1.c<110));
+a	b	c	a	b	c
+1	21	101	2	3	207
+1	21	101	1	16	909
+1	21	101	5	14	312
+1	21	101	5	33	207
+1	21	101	6	20	211
+1	21	101	1	19	132
+1	21	101	8	33	117
+1	21	101	3	21	231
+1	21	101	6	23	303
+5	16	207	2	3	207
+5	16	207	5	33	207
+5	27	132	1	19	132
+select * from v1,t2 where
+((v1.a>3) and (t2.c>110) and (v1.c=t2.c)) or
+((v1.a=1) and (v1.c<110));
+a	b	c	a	b	c
+1	21	101	2	3	207
+1	21	101	1	16	909
+1	21	101	5	14	312
+1	21	101	5	33	207
+1	21	101	6	20	211
+1	21	101	1	19	132
+1	21	101	8	33	117
+1	21	101	3	21	231
+1	21	101	6	23	303
+5	16	207	2	3	207
+5	16	207	5	33	207
+5	27	132	1	19	132
+explain select * from v1,t2 where
+((v1.a>3) and (t2.c>110) and (v1.c=t2.c)) or
+((v1.a=1) and (v1.c<110));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where
+((v1.a>3) and (t2.c>110) and (v1.c=t2.c)) or
+((v1.a=1) and (v1.c<110));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a > 3 or v1.a = 1 and v1.c < 110"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.c = t2.c and v1.a > 3 and t2.c > 110 or v1.a = 1 and v1.c < 110",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and (t1.a > 3 and c > 110 or c < 110 and t1.a = 1)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.a > 3 or t1.a = 1)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100 and (t1.a > 3 and c > 110 or c < 110 and t1.a = 1)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.a > 3 or t1.a = 1)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using intersect in view definition
+# prepare of a query
+# conjunctive subformulas : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING
+prepare stmt from "select * from v1,t2
+                   where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);";
+execute stmt;
+a	b	c	a	b	c
+1	19	117	1	16	909
+1	19	117	1	19	132
+execute stmt;
+a	b	c	a	b	c
+1	19	117	1	16	909
+1	19	117	1	19	132
+deallocate prepare stmt;
+# using intersect in derived table definition
+# extracted or formula : pushing into WHERE using equalities
+# extracted or formula : pushing into HAVING
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select *
+from t2,
+(select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c < 300
+intersect
+select a, b, min(c) as c from t1
+where t1.b>10 group by a,b having c > 100) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=909)) or
+((d1.a<4) and (d1.c<200)));
+a	b	c	a	b	c
+1	16	909	5	16	207
+1	19	132	1	19	117
+3	21	231	1	21	101
+select *
+from t2,
+(select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c < 300
+intersect
+select a, b, min(c) as c from t1
+where t1.b>10 group by a,b having c > 100) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=909)) or
+((d1.a<4) and (d1.c<200)));
+a	b	c	a	b	c
+1	16	909	5	16	207
+1	19	132	1	19	117
+3	21	231	1	21	101
+explain select *
+from t2,
+(select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c < 300
+intersect
+select a, b, min(c) as c from t1
+where t1.b>10 group by a,b having c > 100) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=909)) or
+((d1.a<4) and (d1.c<200)));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.b	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select *
+from t2,
+(select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c < 300
+intersect
+select a, b, min(c) as c from t1
+where t1.b>10 group by a,b having c > 100) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=909)) or
+((d1.a<4) and (d1.c<200)));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t2.c = 909 and t2.b > 13 or d1.a < 4 and d1.c < 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and (t1.b > 13 or t1.a < 4 and c < 200)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.b > 13 or t1.a < 4)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 100 and (t1.b > 13 or t1.a < 4 and c < 200)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.b > 13 or t1.a < 4)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300;
+# using except in view definition
+# conjunctive subformulas : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	21	500	1	16	909
+1	33	988	1	19	132
+1	21	500	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	21	500	1	16	909
+1	33	988	1	19	132
+1	21	500	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# conjunctive subformulas : pushing into WHERE
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a=6);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+select * from v1,t2 where (v1.a=t2.a) and (v1.a=6);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a=6);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a=6);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 6"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a = 6"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 6"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 6 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# conjunctive subformulas : pushing into WHERE using equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (t2.a=6);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+select * from v1,t2 where (v1.a=t2.a) and (t2.a=6);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+explain select * from v1,t2 where (v1.a=t2.a) and (t2.a=6);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (t2.a=6);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a = 6"
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a = 6"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 6"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a = 6 and t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# conjunctive subformulas : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.c>500);
+a	b	c	a	b	c
+1	33	988	1	16	909
+5	14	787	5	14	312
+5	14	787	5	33	207
+1	33	988	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.c>500);
+a	b	c	a	b	c
+1	33	988	1	16	909
+5	14	787	5	14	312
+5	14	787	5	33	207
+1	33	988	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.c>500);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.c>500);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 500",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c > 500",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300 and c > 500",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# conjunctive subformulas : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	33	988	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	33	988	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 500",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c > 500",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300 and c > 500",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a < 5"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# extracted or formula : pushing into WHERE
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+a	b	c	a	b	c
+1	33	988	1	16	909
+5	14	787	5	14	312
+5	14	787	5	33	207
+1	33	988	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+a	b	c	a	b	c
+1	33	988	1	16	909
+5	14	787	5	14	312
+5	14	787	5	33	207
+1	33	988	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b > 27 or v1.b < 19",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.b > 27 or t1.b < 19)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.b > 27 or t1.b < 19)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# extracted or formula : pushing into HAVING
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c<400) or (v1.c>800));
+a	b	c	a	b	c
+1	33	988	1	16	909
+6	20	315	6	20	211
+1	33	988	1	19	132
+6	20	315	6	23	303
+select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c<400) or (v1.c>800));
+a	b	c	a	b	c
+1	33	988	1	16	909
+6	20	315	6	20	211
+1	33	988	1	19	132
+6	20	315	6	23	303
+explain select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c<400) or (v1.c>800));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where
+(v1.a=t2.a) and ((v1.c<400) or (v1.c>800));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c < 400 or v1.c > 800",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and (c < 400 or c > 800)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300 and (c < 400 or c > 800)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# extracted or formula : pushing into WHERE
+# extracted or formula : pushing into HAVING using equalities
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where
+(v1.c=t2.c) and
+((v1.a>1) and (t2.c<500)) or
+((v1.a=1) and (v1.c>500));
+a	b	c	a	b	c
+1	33	988	2	3	207
+1	33	988	1	16	909
+1	33	988	5	14	312
+1	33	988	5	33	207
+1	33	988	6	20	211
+1	33	988	1	19	132
+1	33	988	8	33	117
+1	33	988	3	21	231
+1	33	988	6	23	303
+select * from v1,t2 where
+(v1.c=t2.c) and
+((v1.a>1) and (t2.c<500)) or
+((v1.a=1) and (v1.c>500));
+a	b	c	a	b	c
+1	33	988	2	3	207
+1	33	988	1	16	909
+1	33	988	5	14	312
+1	33	988	5	33	207
+1	33	988	6	20	211
+1	33	988	1	19	132
+1	33	988	8	33	117
+1	33	988	3	21	231
+1	33	988	6	23	303
+explain select * from v1,t2 where
+(v1.c=t2.c) and
+((v1.a>1) and (t2.c<500)) or
+((v1.a=1) and (v1.c>500));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where
+(v1.c=t2.c) and
+((v1.a>1) and (t2.c<500)) or
+((v1.a=1) and (v1.c>500));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 18,
+        "filtered": 100,
+        "attached_condition": "v1.a > 1 or v1.a = 1 and v1.c > 500"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.c = t2.c and v1.a > 1 and t2.c < 500 or v1.a = 1 and v1.c > 500",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and (t1.a > 1 and c < 500 or c > 500 and t1.a = 1)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.a > 1 or t1.a = 1)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300 and (t1.a > 1 and c < 500 or c > 500 and t1.a = 1)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.a > 1 or t1.a = 1)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+# using except in view definition
+# prepare of a query
+# conjunctive subformulas : pushing into WHERE
+# conjunctive subformulas : pushing into HAVING
+prepare stmt from "select * from v1,t2
+                   where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);";
+execute stmt;
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	33	988	1	19	132
+execute stmt;
+a	b	c	a	b	c
+1	33	988	1	16	909
+1	33	988	1	19	132
+deallocate prepare stmt;
+# using except in view definition
+# extracted or formula : pushing into WHERE using equalities
+# extracted or formula : pushing into HAVING
+# pushing equalities
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select *
+from t2,
+(select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=988)) or
+((d1.a>4) and (d1.c>500)));
+a	b	c	a	b	c
+5	14	312	5	14	787
+select *
+from t2,
+(select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=988)) or
+((d1.a>4) and (d1.c>500)));
+a	b	c	a	b	c
+5	14	312	5	14	787
+explain select *
+from t2,
+(select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=988)) or
+((d1.a>4) and (d1.c>500)));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.b	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select *
+from t2,
+(select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300) as d1
+where
+(d1.b=t2.b) and
+(((t2.b>13) and (t2.c=988)) or
+((d1.a>4) and (d1.c>500)));
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t2.c = 988 and t2.b > 13 or d1.a > 4 and d1.c > 500",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and (t1.b > 13 or t1.a > 4 and c > 500)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and (t1.b > 13 or t1.a > 4)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 300 and (t1.b > 13 or t1.a > 4 and c > 500)",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and (t1.b > 13 or t1.a > 4)"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union and intersect in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+intersect
+select a, b, max(c) as c from t1
+where t1.a>3 group by a,b having c < 530;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+a	b	c	a	b	c
+6	20	309	6	20	211
+6	20	309	6	23	303
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+a	b	c	a	b	c
+6	20	309	6	20	211
+6	20	309	6	23	303
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	UNION	<derived4>	ALL	NULL	NULL	NULL	NULL	18	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+5	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect4,5>	ALL	NULL	NULL	NULL	NULL	NULL	
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.c > 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "<derived4>",
+                    "access_type": "ALL",
+                    "rows": 18,
+                    "filtered": 100,
+                    "attached_condition": "__3.a > 5 and __3.c > 200",
+                    "materialized": {
+                      "query_block": {
+                        "union_result": {
+                          "table_name": "<intersect4,5>",
+                          "access_type": "ALL",
+                          "query_specifications": [
+                            {
+                              "query_block": {
+                                "select_id": 4,
+                                "having_condition": "c < 300 and c > 200",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.b > 10 and t1.a > 5"
+                                    }
+                                  }
+                                }
+                              }
+                            },
+                            {
+                              "query_block": {
+                                "select_id": 5,
+                                "operation": "INTERSECT",
+                                "having_condition": "c < 530 and c > 200",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.a > 3 and t1.a > 5"
+                                    }
+                                  }
+                                }
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union and intersect in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+intersect
+select a, b, max(c) as c from t1
+where t1.a>3 group by a,b having c < 500
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+8	33	123	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+8	33	123	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	UNION	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.c < 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c < 500 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 3 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union and except in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+except
+select a, b, max(c) as c from t1
+where t1.a>3 group by a,b having c < 530;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+a	b	c	a	b	c
+6	20	309	6	20	211
+6	20	309	6	23	303
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+a	b	c	a	b	c
+6	20	309	6	20	211
+6	20	309	6	23	303
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	UNION	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 5 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.c > 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 5"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 530 and c > 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 3 and t1.a > 5"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union and except in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, min(c) as c from t1
+where t1.a<9 group by a,b having c > 200
+except
+select a, b, max(c) as c from t1
+where t1.a>3 group by a,b having c < 500
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+8	33	123	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+8	33	123	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	UNION	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.c < 200",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 200 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c < 500 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 3 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "UNION",
+                  "having_condition": "c < 300 and c < 200",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using except and intersect in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+intersect
+select a, b, max(c) as c from t1
+where t1.a<7 group by a,b having c < 500
+except
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 150;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<150);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<150);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c < 150",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and c < 150",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c < 500 and c < 150",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 7 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "EXCEPT",
+                  "having_condition": "c > 150 and c < 150",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using except and intersect in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+except
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 150
+intersect
+select a, b, max(c) as c from t1
+where t1.a<7 group by a,b having c < 500;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+a	b	c	a	b	c
+8	33	123	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+a	b	c	a	b	c
+8	33	123	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	<derived4>	ALL	NULL	NULL	NULL	NULL	18	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+5	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect4,5>	ALL	NULL	NULL	NULL	NULL	NULL	
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c < 130",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and c < 130",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "table": {
+                    "table_name": "<derived4>",
+                    "access_type": "ALL",
+                    "rows": 18,
+                    "filtered": 100,
+                    "attached_condition": "__3.a > 4 and __3.c < 130",
+                    "materialized": {
+                      "query_block": {
+                        "union_result": {
+                          "table_name": "<intersect4,5>",
+                          "access_type": "ALL",
+                          "query_specifications": [
+                            {
+                              "query_block": {
+                                "select_id": 4,
+                                "having_condition": "c > 150 and c < 130",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.a < 9 and t1.a > 4"
+                                    }
+                                  }
+                                }
+                              }
+                            },
+                            {
+                              "query_block": {
+                                "select_id": 5,
+                                "operation": "INTERSECT",
+                                "having_condition": "c < 500 and c < 130",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.a < 7 and t1.a > 4"
+                                    }
+                                  }
+                                }
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using except, intersect and union in view definition
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+except
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 150
+intersect
+select a, b, max(c) as c from t1
+where t1.a<7 group by a,b having c < 500
+union
+select a, b, max(c) as c from t1
+where t1.a<7 group by a,b having c < 120;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+a	b	c	a	b	c
+8	33	123	8	33	117
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+a	b	c	a	b	c
+8	33	123	8	33	117
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	<derived4>	ALL	NULL	NULL	NULL	NULL	18	Using where
+4	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+5	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect4,5>	ALL	NULL	NULL	NULL	NULL	NULL	
+6	UNION	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,6>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.c < 130",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,6>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c < 300 and c < 130",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "table": {
+                    "table_name": "<derived4>",
+                    "access_type": "ALL",
+                    "rows": 18,
+                    "filtered": 100,
+                    "attached_condition": "__3.a > 4 and __3.c < 130",
+                    "materialized": {
+                      "query_block": {
+                        "union_result": {
+                          "table_name": "<intersect4,5>",
+                          "access_type": "ALL",
+                          "query_specifications": [
+                            {
+                              "query_block": {
+                                "select_id": 4,
+                                "having_condition": "c > 150 and c < 130",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.a < 9 and t1.a > 4"
+                                    }
+                                  }
+                                }
+                              }
+                            },
+                            {
+                              "query_block": {
+                                "select_id": 5,
+                                "operation": "INTERSECT",
+                                "having_condition": "c < 500 and c < 130",
+                                "filesort": {
+                                  "sort_key": "t1.a, t1.b",
+                                  "temporary_table": {
+                                    "table": {
+                                      "table_name": "t1",
+                                      "access_type": "ALL",
+                                      "rows": 18,
+                                      "filtered": 100,
+                                      "attached_condition": "t1.a < 7 and t1.a > 4"
+                                    }
+                                  }
+                                }
+                              }
+                            }
+                          ]
+                        }
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 6,
+                  "operation": "UNION",
+                  "having_condition": "c < 120 and c < 130",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 7 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using intersect in view definition
+# using embedded view
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+intersect
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 120;
+create view v2 as
+select a, b, max(c) as c from v1
+where v1.a<7 group by a,b;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+explain select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.c < 150",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "c < 150",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 18,
+                "filtered": 100,
+                "attached_condition": "v1.a < 7 and v1.a > 4",
+                "materialized": {
+                  "query_block": {
+                    "union_result": {
+                      "table_name": "<intersect3,4>",
+                      "access_type": "ALL",
+                      "query_specifications": [
+                        {
+                          "query_block": {
+                            "select_id": 3,
+                            "having_condition": "c < 300",
+                            "filesort": {
+                              "sort_key": "t1.a, t1.b",
+                              "temporary_table": {
+                                "table": {
+                                  "table_name": "t1",
+                                  "access_type": "ALL",
+                                  "rows": 18,
+                                  "filtered": 100,
+                                  "attached_condition": "t1.b > 10 and t1.a < 7 and t1.a > 4"
+                                }
+                              }
+                            }
+                          }
+                        },
+                        {
+                          "query_block": {
+                            "select_id": 4,
+                            "operation": "INTERSECT",
+                            "having_condition": "c > 120",
+                            "filesort": {
+                              "sort_key": "t1.a, t1.b",
+                              "temporary_table": {
+                                "table": {
+                                  "table_name": "t1",
+                                  "access_type": "ALL",
+                                  "rows": 18,
+                                  "filtered": 100,
+                                  "attached_condition": "t1.a < 9 and t1.a < 7 and t1.a > 4"
+                                }
+                              }
+                            }
+                          }
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1,v2;
+# using except in view definition
+# using embedded view
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c < 300
+except
+select a, b, max(c) as c from t1
+where t1.a<9 group by a,b having c > 150;
+create view v2 as
+select a, b, max(c) as c from v1
+where v1.a<7 group by a,b;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+a	b	c	a	b	c
+5	27	132	5	14	312
+5	27	132	5	33	207
+explain select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v2.c < 150",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "c < 150",
+          "filesort": {
+            "sort_key": "v1.a, v1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "<derived3>",
+                "access_type": "ALL",
+                "rows": 18,
+                "filtered": 100,
+                "attached_condition": "v1.a < 7 and v1.a > 4",
+                "materialized": {
+                  "query_block": {
+                    "union_result": {
+                      "table_name": "<except3,4>",
+                      "access_type": "ALL",
+                      "query_specifications": [
+                        {
+                          "query_block": {
+                            "select_id": 3,
+                            "having_condition": "c < 300",
+                            "filesort": {
+                              "sort_key": "t1.a, t1.b",
+                              "temporary_table": {
+                                "table": {
+                                  "table_name": "t1",
+                                  "access_type": "ALL",
+                                  "rows": 18,
+                                  "filtered": 100,
+                                  "attached_condition": "t1.b > 10 and t1.a < 7 and t1.a > 4"
+                                }
+                              }
+                            }
+                          }
+                        },
+                        {
+                          "query_block": {
+                            "select_id": 4,
+                            "operation": "EXCEPT",
+                            "having_condition": "c > 150",
+                            "filesort": {
+                              "sort_key": "t1.a, t1.b",
+                              "temporary_table": {
+                                "table": {
+                                  "table_name": "t1",
+                                  "access_type": "ALL",
+                                  "rows": 18,
+                                  "filtered": 100,
+                                  "attached_condition": "t1.a < 9 and t1.a < 7 and t1.a > 4"
+                                }
+                              }
+                            }
+                          }
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1,v2;
+# using intersect in view definition
+# conditions are pushed in different parts of selects
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.a<9 group by a having c > 300
+intersect
+select a, b, max(c) as c from t1
+where t1.b<21 group by b having c > 200;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.b>12) and (v1.c<450);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.b>12) and (v1.c<450);
+a	b	c	a	b	c
+6	20	315	6	20	211
+6	20	315	6	23	303
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.b>12) and (v1.c<450);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	INTERSECT RESULT	<intersect2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.b>12) and (v1.c<450);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 4 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b > 12 and v1.c < 450",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<intersect2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 300 and t1.b > 12 and c < 450",
+                  "filesort": {
+                    "sort_key": "t1.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 4"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c > 200 and t1.a > 4 and c < 450",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b < 21 and t1.b > 12"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using except in view definition
+# conditions are pushed in different parts of selects
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>20 group by a having c > 300
+except
+select a, b, max(c) as c from t1
+where t1.a<7 group by b having c > 150;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a<2) and (v1.b<30) and (v1.c>450);
+a	b	c	a	b	c
+1	21	988	1	16	909
+1	21	988	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and (v1.a<2) and (v1.b<30) and (v1.c>450);
+a	b	c	a	b	c
+1	21	988	1	16	909
+1	21	988	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a<2) and (v1.b<30) and (v1.c>450);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a<2) and (v1.b<30) and (v1.c>450);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a < 2 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.b < 30 and v1.c > 450",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 300 and t1.b < 30 and c > 450",
+                  "filesort": {
+                    "sort_key": "t1.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 20 and t1.a < 2"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c > 150 and t1.a < 2 and c > 450",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 7 and t1.b < 30"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using except and union in view definition
+# conditions are pushed in different parts of selects
+# conjunctive subformulas : pushing into HAVING
+# extracted or formula : pushing into WHERE
+# extracted or formula : pushing into HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.b>20 group by a having c > 300
+except
+select a, b, max(c) as c from t1
+where t1.a<7 group by b having c > 150;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and ((v1.a<2) or (v1.a<5)) and (v1.c>450);
+a	b	c	a	b	c
+1	21	988	1	16	909
+1	21	988	1	19	132
+select * from v1,t2 where (v1.a=t2.a) and ((v1.a<2) or (v1.a<5)) and (v1.c>450);
+a	b	c	a	b	c
+1	21	988	1	16	909
+1	21	988	1	19	132
+explain select * from v1,t2 where (v1.a=t2.a) and ((v1.a<2) or (v1.a<5)) and (v1.c>450);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	2	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	EXCEPT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	EXCEPT RESULT	<except2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and ((v1.a<2) or (v1.a<5)) and (v1.c>450);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "(t2.a < 2 or t2.a < 5) and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c > 450",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<except2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 300 and c > 450",
+                  "filesort": {
+                    "sort_key": "t1.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 20 and (t1.a < 2 or t1.a < 5)"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "EXCEPT",
+                  "having_condition": "c > 150 and (t1.a < 2 or t1.a < 5) and c > 450",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 7"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union and intersect in view definition
+# conditions are pushed in different parts of selects
+# conjunctive subformulas : pushing into WHERE and HAVING
+create view v1 as
+select a, b, max(c) as c from t1
+where t1.a<9 group by a having c > 100
+intersect
+select a, b, max(c) as c from t1
+where t1.a>3 group by b having c < 800
+union
+select a, b, max(c) as c from t1
+where t1.b>10 group by a,b having c > 300;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.a=t2.a) and (v1.a>1) and (v1.b > 12) and (v1.c>400);
+a	b	c	a	b	c
+5	14	787	5	14	312
+5	14	787	5	33	207
+select * from v1,t2 where (v1.a=t2.a) and (v1.a>1) and (v1.b > 12) and (v1.c>400);
+a	b	c	a	b	c
+5	14	787	5	14	312
+5	14	787	5	33	207
+explain select * from v1,t2 where (v1.a=t2.a) and (v1.a>1) and (v1.b > 12) and (v1.c>400);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.a	3	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+3	INTERSECT	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+4	UNION	t1	ALL	NULL	NULL	NULL	NULL	18	Using where; Using temporary; Using filesort
+NULL	UNIT RESULT	<unit2,3,4>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.a=t2.a) and (v1.a>1) and (v1.b > 12) and (v1.c>400);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.a > 1 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.b > 12 and v1.c > 400",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<unit2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "having_condition": "c > 100 and t1.b > 12 and c > 400",
+                  "filesort": {
+                    "sort_key": "t1.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a < 9 and t1.a > 1"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "INTERSECT",
+                  "having_condition": "c < 800 and t1.a > 1 and c > 400",
+                  "filesort": {
+                    "sort_key": "t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.a > 3 and t1.b > 12"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "UNION",
+                  "having_condition": "c > 300 and c > 400",
+                  "filesort": {
+                    "sort_key": "t1.a, t1.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t1",
+                        "access_type": "ALL",
+                        "rows": 18,
+                        "filtered": 100,
+                        "attached_condition": "t1.b > 10 and t1.a > 1 and t1.b > 12"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+create table t3 (a int, b int, c int);
+insert into t3 values
+(1,21,345), (2,33,7), (8,33,114), (3,21,500), (1,19,107), (5,14,787),
+(4,33,123), (9,10,211), (11,16,207), (10,33,988), (5,27,132), (12,21,104),
+(6,20,309), (16,20,315), (16,21,101), (18,33,404), (19,10,800), (10,21,123),
+(17,11,708), (6,20,214);
+create index i1 on t3(a);
+# conjunctive subformulas : pushing into WHERE
+# pushed condition gives range access
+create view v1 as
+select a, b, max(c) as max_c from t3
+where a>0 group by a;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.b=t2.b) and (v1.a<5);
+a	b	max_c	a	b	c
+4	33	123	5	33	207
+2	33	7	5	33	207
+4	33	123	8	33	117
+2	33	7	8	33	117
+3	21	500	3	21	231
+1	21	345	3	21	231
+select * from v1,t2 where (v1.b=t2.b) and (v1.a<5);
+a	b	max_c	a	b	c
+1	21	345	3	21	231
+2	33	7	5	33	207
+2	33	7	8	33	117
+3	21	500	3	21	231
+4	33	123	5	33	207
+4	33	123	8	33	117
+explain select * from v1,t2 where (v1.b=t2.b) and (v1.a<5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t3	range	i1	i1	5	NULL	5	Using index condition
+explain format=json select * from v1,t2 where (v1.b=t2.b) and (v1.a<5);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived2>",
+        "access_type": "ALL",
+        "rows": 5,
+        "filtered": 80,
+        "attached_condition": "v1.a < 5"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "v1.b = t2.b",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t3",
+            "access_type": "range",
+            "possible_keys": ["i1"],
+            "key": "i1",
+            "key_length": "5",
+            "used_key_parts": ["a"],
+            "rows": 5,
+            "filtered": 100,
+            "index_condition": "t3.a > 0 and t3.a < 5"
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+# using union in view definition
+# conjunctive subformulas : pushing into WHERE
+# pushed condition gives range access
+create view v1 as
+select a, b, max(c) as c from t3
+where t3.a>1 group by a
+union
+select a, b, max(c) as c from t3
+where t3.a>2 group by a;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.b=t2.b) and (v1.a<4);
+a	b	c	a	b	c
+2	33	7	5	33	207
+2	33	7	8	33	117
+3	21	500	3	21	231
+select * from v1,t2 where (v1.b=t2.b) and (v1.a<4);
+a	b	c	a	b	c
+2	33	7	5	33	207
+2	33	7	8	33	117
+3	21	500	3	21	231
+explain select * from v1,t2 where (v1.b=t2.b) and (v1.a<4);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	3	Using where
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where; Using join buffer (flat, BNL join)
+2	DERIVED	t3	range	i1	i1	5	NULL	2	Using index condition
+3	UNION	t3	range	i1	i1	5	NULL	1	Using index condition
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.b=t2.b) and (v1.a<4);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "v1.a < 4",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "table": {
+                    "table_name": "t3",
+                    "access_type": "range",
+                    "possible_keys": ["i1"],
+                    "key": "i1",
+                    "key_length": "5",
+                    "used_key_parts": ["a"],
+                    "rows": 2,
+                    "filtered": 100,
+                    "index_condition": "t3.a > 1 and t3.a < 4"
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "table": {
+                    "table_name": "t3",
+                    "access_type": "range",
+                    "possible_keys": ["i1"],
+                    "key": "i1",
+                    "key_length": "5",
+                    "used_key_parts": ["a"],
+                    "rows": 1,
+                    "filtered": 100,
+                    "index_condition": "t3.a > 2 and t3.a < 4"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "t2",
+        "access_type": "ALL",
+        "rows": 9,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t2.b = v1.b"
+    }
+  }
+}
+drop view v1;
+# using union in view definition
+# conjunctive subformulas : pushing into WHERE
+# pushed condition gives range access in one of the selects
+create view v1 as
+select a, b, max(c) as c from t3
+where t3.a>1 group by a
+union
+select a, b, max(c) as c from t3
+where t3.b<21 group by b;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from v1,t2 where (v1.b=t2.b) and (v1.a<3);
+a	b	c	a	b	c
+2	33	7	5	33	207
+1	19	107	1	19	132
+2	33	7	8	33	117
+select * from v1,t2 where (v1.b=t2.b) and (v1.a<3);
+a	b	c	a	b	c
+2	33	7	5	33	207
+1	19	107	1	19	132
+2	33	7	8	33	117
+explain select * from v1,t2 where (v1.b=t2.b) and (v1.a<3);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	9	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t2.b	2	Using where
+2	DERIVED	t3	range	i1	i1	5	NULL	1	Using index condition
+3	UNION	t3	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+NULL	UNION RESULT	<union2,3>	ALL	NULL	NULL	NULL	NULL	NULL	
+explain format=json select * from v1,t2 where (v1.b=t2.b) and (v1.a<3);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 9,
+      "filtered": 100,
+      "attached_condition": "t2.b is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t2.b"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.a < 3",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "table": {
+                    "table_name": "t3",
+                    "access_type": "range",
+                    "possible_keys": ["i1"],
+                    "key": "i1",
+                    "key_length": "5",
+                    "used_key_parts": ["a"],
+                    "rows": 1,
+                    "filtered": 100,
+                    "index_condition": "t3.a > 1 and t3.a < 3"
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "having_condition": "t3.a < 3",
+                  "filesort": {
+                    "sort_key": "t3.b",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t3",
+                        "access_type": "ALL",
+                        "rows": 20,
+                        "filtered": 100,
+                        "attached_condition": "t3.b < 21"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1;
+alter table t3 drop index i1;
+drop table t1,t2,t3;
+#
+# MDEV-10782: condition extracted from a multiple equality
+#             pushed into HAVING
+#
+CREATE TABLE t1 (i int);
+INSERT INTO t1 VALUES (1),(2);
+EXPLAIN EXTENDED
+SELECT *
+FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
+WHERE f = 8;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `sq1`.`f` AS `f` from (/* select#3 */ select min(`test`.`t1`.`i`) AS `f` from `test`.`t1` having `f` = 8) `sq1` where `sq1`.`f` = 8
+SELECT *
+FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
+WHERE f = 8;
+f
+SELECT *
+FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
+WHERE f = 1;
+f
+1
+DROP TABLE t1;
+#
+# MDEV-10783: pushdown into constant view
+#
+CREATE TABLE t1 (i int) ENGINE=MyISAM;
+CREATE VIEW v AS SELECT 5;
+SELECT * FROM t1 WHERE 1 IN ( SELECT * FROM v );
+i
+DROP VIEW v;
+DROP TABLE t1;
+#
+# MDEV-10785: second execution of a query with condition
+#             pushed into view
+#
+CREATE TABLE t1 (i int);
+CREATE VIEW v1 AS SELECT i FROM t1 WHERE i < 5;
+CREATE FUNCTION f (in1 int) RETURNS int RETURN in1;
+CREATE VIEW v2 AS SELECT * FROM v1 GROUP BY i;
+PREPARE stmt FROM "SELECT * FROM v2 WHERE f(0) <> 2";
+EXECUTE stmt;
+i
+EXECUTE stmt;
+i
+DROP FUNCTION f;
+DROP VIEW v2,v1;
+DROP TABLE t1;
+#
+# MDEV-10884: condition pushdown into derived specified by
+#             1. unit with  SELECT containing ORDER BY ... LIMIT
+#             2. unit containing global ORDER BY ... LIMIT
+#
+create table t1(a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+select a from t1 order by a limit 5;
+a
+0
+1
+2
+3
+4
+set statement optimizer_switch='condition_pushdown_for_derived=off' for
+select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);
+a
+0
+4
+set statement optimizer_switch='condition_pushdown_for_derived=on' for 
+select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);
+a
+0
+4
+select a from t1 where a < 4 union select a from t1 where a > 5
+order by a limit 5;
+a
+0
+1
+2
+3
+6
+set statement optimizer_switch='condition_pushdown_for_derived=off' for
+select * from 
+(select a from t1 where a < 4 union select a from t1 where a > 5
+order by a limit 5) t where t.a not in (2,9);
+a
+0
+1
+3
+6
+set statement optimizer_switch='condition_pushdown_for_derived=on' for 
+select * from 
+(select a from t1 where a < 4 union select a from t1 where a > 5
+order by a limit 5) t where t.a not in (2,9);
+a
+0
+1
+3
+6
+drop table t1;
+#
+# MDEV-11072: pushdown of the condition obtained
+#             after constant row substitution
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+CREATE OR REPLACE VIEW v2 AS SELECT * FROM t2;
+CREATE TABLE t3 (c INT) ENGINE=MyISAM;
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v3 AS SELECT * FROM t3;
+SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT c FROM v3 WHERE c = a 
+) 
+);
+a
+INSERT INTO t1 VALUES (2);
+INSERT INTO t2 VALUES (3), (2);
+INSERT INTO t3 VALUES (4), (1), (2), (7);
+SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT c FROM v3 WHERE c = a 
+) 
+);
+a
+2
+EXPLAIN FORMAT=JSON
+SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT c FROM v3 WHERE c = a 
+) 
+);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "const_condition": "0 or <in_optimizer>(2,<exists>(subquery#3))",
+    "table": {
+      "table_name": "t1",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100
+    },
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t2.b = 2",
+      "first_match": "t1"
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "<derived5>",
+            "access_type": "index_subquery",
+            "possible_keys": ["key0"],
+            "key": "key0",
+            "key_length": "5",
+            "used_key_parts": ["c"],
+            "ref": ["func"],
+            "rows": 2,
+            "filtered": 100,
+            "materialized": {
+              "query_block": {
+                "select_id": 5,
+                "table": {
+                  "table_name": "t3",
+                  "access_type": "ALL",
+                  "rows": 4,
+                  "filtered": 100,
+                  "attached_condition": "t3.c = 2"
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+CREATE TABLE t4 (d INT, e INT) ENGINE=MyISAM;
+INSERT INTO t4 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
+CREATE OR REPLACE VIEW v4 AS 
+SELECT d, sum(e) AS s FROM t4 GROUP BY d;
+set statement optimizer_switch='condition_pushdown_for_derived=off' for SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT d FROM v4 WHERE s > a 
+) 
+);
+a
+2
+SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT d FROM v4 WHERE s > a 
+) 
+);
+a
+2
+explain SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT d FROM v4 WHERE s > a 
+) 
+);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where; FirstMatch(t1)
+3	DEPENDENT SUBQUERY	<derived5>	index_subquery	key0	key0	5	func	2	Using where
+5	DERIVED	t4	ALL	NULL	NULL	NULL	NULL	5	Using temporary; Using filesort
+explain format=json SELECT * FROM t1 WHERE a IN ( 
+SELECT b FROM v2 WHERE b < a OR b IN ( 
+SELECT d FROM v4 WHERE s > a 
+) 
+);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "const_condition": "0 or <in_optimizer>(2,<exists>(subquery#3))",
+    "table": {
+      "table_name": "t1",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100
+    },
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t2.b = 2",
+      "first_match": "t1"
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "<derived5>",
+            "access_type": "index_subquery",
+            "possible_keys": ["key0"],
+            "key": "key0",
+            "key_length": "5",
+            "used_key_parts": ["d"],
+            "ref": ["func"],
+            "rows": 2,
+            "filtered": 100,
+            "materialized": {
+              "query_block": {
+                "select_id": 5,
+                "having_condition": "s > 2",
+                "filesort": {
+                  "sort_key": "t4.d",
+                  "temporary_table": {
+                    "table": {
+                      "table_name": "t4",
+                      "access_type": "ALL",
+                      "rows": 5,
+                      "filtered": 100
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+DROP VIEW v2,v3,v4;
+DROP TABLE t1,t2,t3,t4;
+#
+# MDEV-10800: pushdown of the condition obtained
+#             after constant row substitution
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1);
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3),(4);
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
+SELECT * FROM 
+( SELECT * FROM t1
+WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;
+a
+EXPLAIN FORMAT=JSON
+SELECT * FROM 
+( SELECT * FROM t1
+WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "const_condition": "<in_optimizer>(1,exists(subquery#3))",
+    "table": {
+      "table_name": "t1",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "<derived4>",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "v2.b = 1",
+            "materialized": {
+              "query_block": {
+                "select_id": 4,
+                "table": {
+                  "table_name": "t2",
+                  "access_type": "ALL",
+                  "rows": 2,
+                  "filtered": 100,
+                  "attached_condition": "t2.b = 1"
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# MDEV-11102: condition pushdown into materialized inner table 
+#              of outer join is not applied as not being valid 
+#
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (0),(2);
+CREATE TABLE t2 (b INT);
+INSERT INTO t2 VALUES (1),(2);
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
+SELECT * FROM t1 LEFT JOIN t2 ON a = b WHERE b IS NULL;
+a	b
+0	NULL
+SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;
+a	b
+0	NULL
+EXPLAIN FORMAT=JSON
+SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "trigcond(v2.b is null) and trigcond(trigcond(t1.a is not null))",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t2",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# MDEV-11103: pushdown condition with ANY subquery
+#
+CREATE TABLE t1 (i INT);
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+INSERT INTO t1 VALUES (1),(2);
+EXPLAIN FORMAT=JSON
+SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "<nop>(v1.i <= 3)",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "<nop>(t1.i <= 3)"
+          }
+        }
+      }
+    }
+  }
+}
+Warnings:
+Note	1249	Select 2 was reduced during optimization
+SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );
+i
+1
+2
+DROP VIEW v1;
+DROP TABLE t1;
+#
+# MDEV-11315: condition with outer reference to mergeable derived
+#
+CREATE TABLE t1 (pk1 INT PRIMARY KEY, a INT, b INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (10,7,1),(11,0,2);
+CREATE TABLE t2 (pk2 INT PRIMARY KEY, c INT, d DATETIME) ENGINE=MyISAM;
+INSERT INTO t2 VALUES 
+(1,4,'2008-09-27 00:34:58'),
+(2,5,'2007-05-28 00:00:00'),
+(3,6,'2009-07-25 09:21:20');
+CREATE VIEW v1 AS SELECT * FROM t1;
+CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
+SELECT * FROM v1 AS sq 
+WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
+pk1	a	b
+10	7	1
+11	0	2
+EXPLAIN FORMAT=JSON
+SELECT * FROM v1 AS sq 
+WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "<in_optimizer>(t1.b,<exists>(subquery#2)) or t1.b = 100"
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "<derived4>",
+            "access_type": "index_subquery",
+            "possible_keys": ["key0"],
+            "key": "key0",
+            "key_length": "4",
+            "used_key_parts": ["pk2"],
+            "ref": ["func"],
+            "rows": 2,
+            "filtered": 100,
+            "materialized": {
+              "query_block": {
+                "select_id": 4,
+                "table": {
+                  "table_name": "t2",
+                  "access_type": "ALL",
+                  "rows": 3,
+                  "filtered": 100
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+SELECT * FROM ( SELECT * FROM t1 ) AS sq 
+WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
+pk1	a	b
+10	7	1
+11	0	2
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT * FROM t1 ) AS sq 
+WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "<in_optimizer>(t1.b,<exists>(subquery#3)) or t1.b = 100"
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "<derived4>",
+            "access_type": "index_subquery",
+            "possible_keys": ["key0"],
+            "key": "key0",
+            "key_length": "4",
+            "used_key_parts": ["pk2"],
+            "ref": ["func"],
+            "rows": 2,
+            "filtered": 100,
+            "materialized": {
+              "query_block": {
+                "select_id": 4,
+                "table": {
+                  "table_name": "t2",
+                  "access_type": "ALL",
+                  "rows": 3,
+                  "filtered": 100
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+DROP VIEW v1,v2;
+DROP TABLE t1,t2;
+#
+# MDEV-11313: pushdown of the condition obtained
+#             after constant row substitution
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (50);
+CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;
+f
+0
+EXPLAIN FORMAT=JSON
+SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "<derived3>",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "v1.a = 50",
+            "materialized": {
+              "query_block": {
+                "select_id": 3,
+                "table": {
+                  "table_name": "t1",
+                  "access_type": "ALL",
+                  "rows": 2,
+                  "filtered": 100,
+                  "attached_condition": "t1.a = 50"
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+CREATE TABLE t3 (a INT, b INT) ENGINE=MYISAM;
+INSERT INTO t3 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
+CREATE VIEW v2 AS SELECT a, sum(b) AS s FROM t3 GROUP BY a ;
+SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;
+f
+3
+EXPLAIN FORMAT=JSON
+SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "<derived3>",
+            "access_type": "ALL",
+            "rows": 5,
+            "filtered": 100,
+            "attached_condition": "v2.s < 50",
+            "materialized": {
+              "query_block": {
+                "select_id": 3,
+                "having_condition": "s < 50",
+                "filesort": {
+                  "sort_key": "t3.a",
+                  "temporary_table": {
+                    "table": {
+                      "table_name": "t3",
+                      "access_type": "ALL",
+                      "rows": 5,
+                      "filtered": 100
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+}
+DROP VIEW v1,v2;
+DROP TABLE t1,t2,t3;
+#
+# MDEV-10882: pushdown of the predicate with cached value
+#
+CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL) ENGINE=MyISAM;
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+INSERT INTO t1 VALUES (1,2),(3,4);
+CREATE TABLE t2 (c INT NOT NULL) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (5),(6);
+SELECT a, GROUP_CONCAT(b) FROM v1
+WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;
+a	GROUP_CONCAT(b)
+1	2
+EXPLAIN FORMAT=JSON
+SELECT a, GROUP_CONCAT(b) FROM v1
+WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery2>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "read_sorted_file": {
+      "filesort": {
+        "sort_key": "v1.a",
+        "table": {
+          "table_name": "<derived3>",
+          "access_type": "ALL",
+          "rows": 2,
+          "filtered": 100,
+          "attached_condition": "v1.b = 2",
+          "materialized": {
+            "query_block": {
+              "select_id": 3,
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 2,
+                "filtered": 100,
+                "attached_condition": "t1.b = 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v1;
+DROP TABLE t1,t2;
+#
+# MDEV-10836: pushdown of the predicate with cached value
+#
+CREATE TABLE t (pk INT PRIMARY KEY, f INT) ENGINE=MyISAM;
+CREATE ALGORITHM=TEMPTABLE VIEW v AS SELECT * FROM t;
+INSERT INTO t VALUES (1,1),(3,2);
+SELECT * FROM v AS v1, v AS v2
+WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );
+pk	f	pk	f
+3	2	3	2
+EXPLAIN FORMAT=JSON
+SELECT * FROM v AS v1, v AS v2
+WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery2>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.f = 2",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "t.f = 2"
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived4>",
+        "access_type": "ALL",
+        "rows": 2,
+        "filtered": 100,
+        "attached_condition": "v2.pk > 2"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 4,
+          "table": {
+            "table_name": "t",
+            "access_type": "range",
+            "possible_keys": ["PRIMARY"],
+            "key": "PRIMARY",
+            "key_length": "4",
+            "used_key_parts": ["pk"],
+            "rows": 2,
+            "filtered": 100,
+            "index_condition": "t.pk > 2"
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v;
+DROP TABLE t;
+#
+# MDEV-11488: pushdown of the predicate with cached value
+#
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(3),(2);
+CREATE TABLE t2 (j INT, KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3),(4);
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+3
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = 3",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = 3"
+          }
+        }
+      }
+    }
+  }
+}
+UPDATE t2 SET j = 2 WHERE j = 3;
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+2
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i FLOAT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1.5),(3.2),(2.71);
+CREATE TABLE t2 (j FLOAT, KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3.2),(2.71);
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+2.71
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = 2.7100000381469727",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = 2.7100000381469727"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i DECIMAL(10,2)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1.5),(3.21),(2.47);
+CREATE TABLE t2 (j DECIMAL(10,2), KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3.21),(4.55);
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+3.21
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = 3.21",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = 3.21"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i VARCHAR(32)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('cc'),('aa'),('ddd');
+CREATE TABLE t2 (j VARCHAR(16), KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES ('bbb'),('aa');
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+aa
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = 'aa'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = 'aa'"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i DATETIME) ENGINE=MyISAM;
+INSERT INTO t1 VALUES
+('2008-09-27 00:34:58'),('2007-05-28 00:00:00'), ('2009-07-25 09:21:20');
+CREATE TABLE t2 (j DATETIME, KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES
+('2007-05-28 00:00:00'), ('2010-08-25 00:00:00');
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+2007-05-28 00:00:00
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = '2007-05-28 00:00:00'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = TIMESTAMP'2007-05-28 00:00:00'"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i DATE) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('2008-09-27'),('2007-05-28'), ('2009-07-25');
+CREATE TABLE t2 (j DATE, KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES ('2007-05-28'), ('2010-08-25');
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+2007-05-28
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = '2007-05-28'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = TIMESTAMP'2007-05-28 00:00:00'"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+CREATE TABLE t1 (i TIME) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('00:34:58'),('10:00:02'), ('09:21:20');
+CREATE TABLE t2 (j TIME, KEY(j)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES ('10:00:02'), ('11:00:10');
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+i
+10:00:02
+EXPLAIN FORMAT=JSON
+SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
+WHERE i IN ( SELECT MIN(j) FROM t2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery3>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "message": "Select tables optimized away"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "sq.i = '10:00:02'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 3,
+            "filtered": 100,
+            "attached_condition": "t1.i = TIME'10:00:02'"
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1,t2;
+#
+# MDEV-11593: pushdown of condition with NULLIF
+#
+CREATE TABLE t1 (i INT);
+CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+INSERT INTO t1 VALUES (2), (1);
+SELECT * FROM v1 WHERE NULLIF(1, i);
+i
+2
+EXPLAIN FORMAT=JSON
+SELECT * FROM v1 WHERE NULLIF(1, i);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "nullif(1,v1.i)",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "nullif(1,t1.i)"
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v1;
+DROP TABLE t1;
+#
+# MDEV-11608: pushdown of the predicate with cached null value
+#
+CREATE TABLE t1 (c VARCHAR(3));
+CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+INSERT INTO t1 VALUES ('foo'),('bar');
+CREATE TABLE t2 (c VARCHAR(3));
+INSERT INTO t2 VALUES ('foo'),('xyz');
+SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );
+c
+EXPLAIN FORMAT=JSON
+SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<subquery2>",
+      "access_type": "system",
+      "rows": 1,
+      "filtered": 100,
+      "materialized": {
+        "unique": 1,
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "message": "Impossible WHERE"
+          }
+        }
+      }
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c = NULL",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "t1.c = NULL"
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v1;
+DROP TABLE t1,t2;
+CREATE TABLE t1 (d DECIMAL(10,2));
+CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+INSERT INTO t1 VALUES (5.37),(1.1);
+CREATE TABLE t2 (d DECIMAL(10,2));
+INSERT INTO t2 VALUES ('1.1'),('2.23');
+SELECT * FROM v1 WHERE v1.d IN ( SELECT MIN(d) FROM t2 WHERE 0 );
+d
+DROP VIEW v1;
+DROP TABLE t1,t2;
+#
+# MDEV-11820: second execution of PS for query 
+#             with false subquery predicate in WHERE 
+#
+CREATE TABLE t1 (c VARCHAR(3)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('foo'),('bar');
+CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
+CREATE TABLE t2 (a INT);
+INSERT INTO t2 VALUES (3), (4);
+PREPARE stmt1 FROM 
+" SELECT * FROM v1 WHERE 1 IN (SELECT a FROM t2) OR c = 'foo'";
+PREPARE stmt2 FROM 
+"EXPLAIN FORMAT=JSON 
+ SELECT * FROM v1 WHERE 1 IN (SELECT a FROM t2) OR c = 'foo'";
+EXECUTE stmt1;
+c
+foo
+EXECUTE stmt2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.c = 'foo'",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "t1.c = 'foo'"
+          }
+        }
+      }
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t2",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "1 = t2.a"
+          }
+        }
+      }
+    ]
+  }
+}
+INSERT INTO t2 SELECT a+1 FROM t2;
+INSERT INTO t2 SELECT a+1 FROM t2;
+INSERT INTO t2 SELECT a+1 FROM t2;
+INSERT INTO t2 SELECT a+1 FROM t2;
+INSERT INTO t2 SELECT a+1 FROM t2;
+INSERT INTO t2 SELECT a+1 FROM t2;
+EXECUTE stmt1;
+c
+foo
+EXECUTE stmt2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "<cache>(<in_optimizer>(1,<exists>(subquery#2))) or v1.c = 'foo'",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100
+          }
+        }
+      }
+    },
+    "subqueries": [
+      {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t2",
+            "access_type": "ALL",
+            "rows": 128,
+            "filtered": 100,
+            "attached_condition": "1 = t2.a"
+          }
+        }
+      }
+    ]
+  }
+}
+DEALLOCATE PREPARE stmt1;
+DEALLOCATE PREPARE stmt2;
+DROP VIEW v1;
+DROP TABLE t1,t2;
+#
+# MDEV-12373: pushdown into derived with side effects is prohibited  
+#
+CREATE TABLE sales_documents (
+id           int NOT NULL AUTO_INCREMENT,
+sale_id      int NULL DEFAULT NULL,
+type         tinyint unsigned NULL DEFAULT NULL,
+data         text NULL DEFAULT NULL COLLATE 'utf8_unicode_ci',
+date         date NULL DEFAULT NULL,
+order_number int unsigned NULL DEFAULT NULL,
+created_at   int NULL DEFAULT NULL,
+updated_at   int NULL DEFAULT NULL,
+generated    tinyint NOT NULL DEFAULT '0',
+synced_at    int NOT NULL DEFAULT '0',
+sum          decimal(13,2) NOT NULL DEFAULT '0',
+PRIMARY KEY (id)
+);
+INSERT INTO sales_documents 
+(id, sale_id, type, order_number, data, created_at, 
+updated_at, date, generated, synced_at, sum) 
+VALUES
+(555, 165, 3, 5, '{}', 1486538300, 1486722835, '2017-02-17', 0, 1486538313, 2320.00),
+(556, 165, 2, 3, '{}', 1486538304, 1486563125, '2017-02-08', 1, 1486538302, 2320.00),
+(557, 158, 2, 2, '{}', 1486538661, 1486538661, '2017-02-08', 0, 1486538660, 2320.00),
+(558, 171, 1, 3, '{}', 1486539104, 1488203405, '2017-02-08', 1, 1486539102, 23230.00),
+(559, 171, 2, 5, '{}', 1486549233, 1487146010, '2017-02-08', 1, 1486549225, 37690.00),
+(560, 172, 1, 1, '{}', 1486658260, 1488203409, '2017-02-09', 1, 1486658256, 40312.00),
+(561, 172, 2, 1, '{}', 1486711997, 1486711997, '2017-02-10', 1, 1486711996, 40312.00),
+(562, 172, 3, 1, '{}', 1486712104, 1486721395, '2017-02-10', 1, 1486712101, 40312.00),
+(563, 171, 3, 2, '{}', 1486712953, 1486720244, '2017-02-10', 1, 1486712910, 23230.00),
+(564, 170, 1, 2, '{}', 1486715948, 1488203410, '2017-02-10', 1, 1486715930, 28873.00),
+(565, 170, 3, 3, '{}', 1486716782, 1486717426, '2017-02-10', 1, 1486716779, 61948.00),
+(566, 166, 3, 4, '{}', 1486720947, 1486720947, '2017-02-10', 1, 1486720945, 4640.00),
+(567, 167, 3, 5, '{}', 1486722741, 1486722783, '2017-02-26', 0, 1486722738, 14755.00),
+(568, 165, 1, 4, '{}', 1486722849, 1486722849, '2017-02-10', 0, 1486722846, 2320.00),
+(569, 173, 2, 2, '{}', 1486723073, 1487071275, '2017-02-10', 1, 1486723071, 14282.00),
+(570, 173, 1, 4, '{}', 1486723100, 1488203412, '2017-02-10', 1, 1486723099, 14282.00),
+(571, 167, 2, 4, '{}', 1486730859, 1486730859, '2017-02-10', 1, 1486730856, 18655.00),
+(572, 167, 1, 5, '{}', 1486730883, 1488203412, '2017-02-10', 1, 1486730877, 18655.00),
+(573, 174, 2, 51, '{}', 1486731622, 1487060259, '2017-02-10', 1, 1486731620, 7140.00),
+(574, 174, 3, 5, '{}', 1486993472, 1486993472, '2017-02-13', 1, 1488216147, 28020.00),
+(575, 174, 1, 6, '{}', 1486993530, 1488203412, '2017-02-13', 1, 1486993505, 7140.00),
+(576, 173, 3, 6, '{}', 1487071425, 1487071425, '2017-02-14', 0, 1487071422, 14282.00),
+(577, 178, 2, 6, '{}', 1487327372, 1487327372, '2017-02-17', 1, 1487327370, 12321.00),
+(578, 177, 2, 7, '{}', 1487327394, 1487327394, '2017-02-17', 0, 1487327391, 4270.00),
+(579, 182, 3, 6, '{}', 1487750589, 1487751693, '2017-02-22', 1, 1487751688, 4270.00),
+(580, 182, 2, 7, '{}', 1487750601, 1487750663, '2017-02-22', 1, 1487750598, 4270.00),
+(581, 182, 1, 7, '{}', 1487750694, 1488203412, '2017-02-22', 1, 1487750692, 4270.00),
+(582, 185, 3, 7, '{}', 1487774051, 1487774051, '2017-02-22', 0, 1487774043, 8913.00),
+(583, 184, 3, 7, '{}', 1487774071, 1487774235, '2017-02-22', 0, 1487774093, 3285.00),
+(584, 184, 2, 8, '{}', 1487774074, 1487774074, '2017-02-22', 0, 1487774073, 3285.00),
+(585, 184, 1, 8, '{}', 1487774081, 1487774081, '2017-02-22', 0, 1487774075, 3285.00),
+(586, 193, 2, 8, '{}', 1487955294, 1487955318, '2017-02-24', 0, 1487955311, 4270.00),
+(587, 193, 1, 8, '{}', 1487955324, 1487955324, '2017-02-24', 0, 1487955320, 4270.00),
+(588, 193, 3, 7, '{}', 1487955341, 1487955341, '2017-02-24', 0, 1487955325, 4270.00),
+(589, 186, 1, 8, '{}', 1487957291, 1487957464, '2017-02-24', 0, 1487957459, 6960.00),
+(590, 186, 2, 8, '{}', 1487957308, 1487957468, '2017-02-24', 0, 1487957465, 6960.00),
+(591, 186, 3, 7, '{}', 1487957312, 1487957473, '2017-02-24', 0, 1487957469, 6960.00),
+(592, 194, 1, 8, '{}', 1488193293, 1488203412, '2017-02-27', 1, 1488193280, 2320.00),
+(593, 194, 2, 8, '{}', 1488193304, 1488193304, '2017-02-27', 1, 1488193303, 2320.00),
+(594, 210, 1, 9, '{}', 1488198896, 1488198896, '2017-02-27', 0, 1488198885, 4270.00),
+(595, 210, 2, 12, '{}', 1488198901, 1488198901, '2017-02-27', 1, 1488532585, 4270.00),
+(596, 210, 3, 10, '{}', 1488198904, 1488198904, '2017-02-27', 1, 1488532565, 4270.00),
+(597, 209, 2, 9, '{}', 1488200016, 1488450772, '2017-02-27', 1, 1488450449, 4270.00),
+(598, 209, 1, 9, '{}', 1488200020, 1488200063, '2017-02-27', 1, 1488200017, 4271.00),
+(599, 209, 3, 7, '{}', 1488200053, 1488200053, '2017-02-27', 0, 1488200021, 4271.00),
+(600, 211, 2, 10, '{}', 1488216265, 1489402027, '2017-02-27', 1, 1488216264, 2320.00),
+(601, 211, 3, 7, '{}', 1488216281, 1488216281, '2017-02-27', 1, 1488216276, 2320.00),
+(602, 211, 1, 10, '{}', 1488216283, 1488216283, '2017-02-27', 1, 1488216282, 2320.00),
+(603, 198, 2, 11, '{}', 1488280125, 1488280125, '2017-02-28', 0, 1488280095, 4270.00),
+(604, 198, 1, 11, '{}', 1488280160, 1488280160, '2017-02-28', 0, 1488280126, 4270.00),
+(605, 198, 3, 8, '{}', 1488280440, 1488280440, '2017-02-28', 0, 1488280435, 4270.00),
+(606, 212, 1, 12, '{}', 1488286301, 1489402168, '2017-02-28', 1, 1488286295, 13825.00),
+(607, 212, 3, 8, '{}', 1488289644, 1488289690, '2017-02-28', 1, 1488289642, 25295.00),
+(608, 212, 2, 13, '{}', 1488290350, 1488290431, '2017-02-28', 1, 1488290347, 13133.75),
+(609, 213, 1, 11, '{}', 1488529470, 1488529470, '2017-03-03', 1, 1488529461, 5660.00),
+(610, 213, 2, 11, '{}', 1488529484, 1488529484, '2017-03-03', 1, 1488529479, 5660.00),
+(611, 213, 3, 9, '{}', 1488529493, 1488529493, '2017-03-03', 1, 1488529489, 5660.00),
+(612, 197, 2, 13, '{}', 1489400715, 1489400715, '2017-03-13', 0, 1489398959, 4270.00),
+(613, 219, 3, 11, '{}', 1490084337, 1490181958, '2017-03-21', 1, 1490084334, 73526.00),
+(614, 216, 3, 11, '{}', 1490085757, 1490086717, '2017-03-21', 0, 1490085755, 5377.00);
+SELECT * FROM
+(SELECT @row := @row + 1 as row, a.* from (
+SELECT t.order_number
+FROM sales_documents t
+WHERE
+t.type = 2 AND
+t.date >= '2017-01-01' AND
+t.date <= '2017-12-31' AND
+t.order_number IS NOT NULL AND
+t.generated = 1
+GROUP BY t.order_number
+) a, (SELECT @row := 0) r) t
+WHERE row <> order_number;
+row	order_number
+14	51
+DROP TABLE sales_documents;
+#
+# MDEV-12845: pushdown from merged derived using equalities  
+#
+create table t1 (a int);
+insert into t1 values
+(4), (8), (5), (3), (10), (2), (7);
+create table t2 (b int, c int);
+insert into t2 values
+(2,1), (5,2), (2,2), (4,1), (4,3),
+(5,3), (2,4), (4,6), (2,1);
+create view v1 as
+select b, sum(c) as s from t2 group by b;
+create view v2 as
+select distinct b, c from t2;
+create view v3 as
+select b, max(c) as m from t2 group by b;
+select b
+from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
+where b > 2;
+b
+4
+5
+explain format=json select b
+from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
+where b > 2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t1.a > 2 and t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "filesort": {
+            "sort_key": "t2.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t2.b > 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+select a
+from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
+where a > 2;
+a
+4
+5
+explain format=json select a
+from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
+where a > 2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t1.a > 2 and t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "filesort": {
+            "sort_key": "t2.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100,
+                "attached_condition": "t2.b > 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+select a
+from  ( select t1.a, v2.b, v2.c from t1, v2 where t1.a = v2.b ) as t
+where a > 2;
+a
+4
+4
+4
+5
+5
+explain format=json select a
+from  ( select t1.a, v2.b, v2.c from t1, v2 where t1.a = v2.b ) as t
+where a > 2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t1.a > 2 and t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "temporary_table": {
+            "table": {
+              "table_name": "t2",
+              "access_type": "ALL",
+              "rows": 9,
+              "filtered": 100,
+              "attached_condition": "t2.b > 2"
+            }
+          }
+        }
+      }
+    }
+  }
+}
+select a
+from  ( select t1.a, v3.b, v3.m from t1, v3 where t1.a = v3.m ) as t
+where a > 2;
+a
+4
+3
+explain format=json select a
+from  ( select t1.a, v3.b, v3.m from t1, v3 where t1.a = v3.m ) as t
+where a > 2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t1.a > 2 and t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["m"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "m > 2",
+          "filesort": {
+            "sort_key": "t2.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 9,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop view v1,v2,v3;
+drop table t1,t2;
+#
+# MDEV-13166: pushdown from merged derived
+#
+CREATE TABLE t1 (i int) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE VIEW v1 AS SELECT MAX(i) AS f FROM t1;
+SELECT * FROM ( SELECT * FROM v1 ) AS sq WHERE f > 0;
+f
+2
+explain format=json SELECT * FROM ( SELECT * FROM v1 ) AS sq WHERE f > 0;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "v1.f > 0",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "f > 0",
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v1;
+DROP TABLE t1;
+#
+# MDEV-13193: pushdown of equality extracted from multiple equality
+#
+CREATE TABLE t1 (i1 int, KEY(i1)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (i2 int) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (2),(4);
+CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
+SELECT * FROM t1, ( SELECT * FROM v2 ) AS sq
+WHERE i1 = 1 AND ( i1 = i2 OR i1 = 2 );
+i1	i2
+explain format=json SELECT * FROM t1, ( SELECT * FROM v2 ) AS sq
+WHERE i1 = 1 AND ( i1 = i2 OR i1 = 2 );
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ref",
+      "possible_keys": ["i1"],
+      "key": "i1",
+      "key_length": "5",
+      "used_key_parts": ["i1"],
+      "ref": ["const"],
+      "rows": 1,
+      "filtered": 100,
+      "using_index": true
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "<derived3>",
+        "access_type": "ALL",
+        "rows": 2,
+        "filtered": 100,
+        "attached_condition": "v2.i2 = 1"
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "table": {
+            "table_name": "t2",
+            "access_type": "ALL",
+            "rows": 2,
+            "filtered": 100,
+            "attached_condition": "t2.i2 = 1"
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# MDEV-14237: derived with regexp_substr() in select list
+#
+create table t1 (a char(8));
+insert into t1 values ('b'), ('a'), ('xx');
+select *
+from ( select distinct regexp_substr(t1.a,'^[A-Za-z]+') as f from t1) as t
+where t.f = 'a' or t.f = 'b';
+f
+b
+a
+explain format=json select *
+from ( select distinct regexp_substr(t1.a,'^[A-Za-z]+') as f from t1) as t
+where t.f = 'a' or t.f = 'b';
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "t.f = 'a' or t.f = 'b'",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "temporary_table": {
+            "table": {
+              "table_name": "t1",
+              "access_type": "ALL",
+              "rows": 3,
+              "filtered": 100
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop table t1;
+#
+# MDEV-13454: consequence of mdev-14368 fixed for 5.5
+#
+SET  sql_mode = 'ONLY_FULL_GROUP_BY';
+create table t1 (id int, id2 int);
+insert into t1 values (1,1),(2,3),(3,4),(7,2);
+create table t2(id2 int);
+insert  t2 values (1),(2),(3);
+SELECT * FROM t1
+LEFT OUTER JOIN
+(SELECT id2, COUNT(*) as ct FROM t2 GROUP BY id2) vc USING (id2)
+WHERE (vc.ct>0);
+id2	id	ct
+1	1	1
+3	2	1
+2	7	1
+EXPLAIN FORMAT=JSON SELECT * FROM t1
+LEFT OUTER JOIN
+(SELECT id2, COUNT(*) as ct FROM t2 GROUP BY id2) vc USING (id2)
+WHERE (vc.ct>0);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "vc.ct > 0",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "having_condition": "ct > 0",
+          "filesort": {
+            "sort_key": "t2.id2",
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 3,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    },
+    "block-nl-join": {
+      "table": {
+        "table_name": "t1",
+        "access_type": "ALL",
+        "rows": 4,
+        "filtered": 100
+      },
+      "buffer_type": "flat",
+      "buffer_size": "256Kb",
+      "join_type": "BNL",
+      "attached_condition": "t1.id2 = vc.id2"
+    }
+  }
+}
+DROP TABLE t1,t2;
+SET  sql_mode = DEFAULT;
+#
+# MDEV-10855: Pushdown into derived with window functions 
+#
+set @save_optimizer_switch= @@optimizer_switch;
+set optimizer_switch='split_materialized=off';
+create table t1 (a int, c varchar(16));
+insert into t1 values
+(8,'aa'), (5,'cc'), (1,'bb'), (2,'aa'), (9,'cc'),
+(7,'aa'), (2,'aa'), (7,'bb');
+create table t2 (a int, b int, c varchar(16), index idx(a,c));
+insert into t2 values
+(7,10,'cc'), (1,20,'aa'), (2,23,'bb'), (7,18,'cc'), (1,30,'bb'),
+(4,71,'xx'), (3,15,'aa'), (7,82,'bb'), (8,12,'dd'), (4,15,'aa'),
+(11,33,'yy'), (10,42,'zz'), (4,53,'xx'), (10,17,'yy'), (7,12,'bb'),
+(8,20,'dd'), (7,32,'bb'), (1,50,'aa'), (3,40,'bb'), (3,77,'aa');
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from (select a, c, sum(b) over (partition by a,c) from t2) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum(b) over (partition by a,c)
+7	cc	28
+7	cc	28
+3	aa	92
+7	bb	126
+4	aa	15
+7	bb	126
+7	bb	126
+3	bb	40
+3	aa	92
+select * from (select a, c, sum(b) over (partition by a,c) from t2) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum(b) over (partition by a,c)
+7	cc	28
+7	cc	28
+3	aa	92
+7	bb	126
+4	aa	15
+7	bb	126
+7	bb	126
+3	bb	40
+3	aa	92
+explain select * from (select a, c, sum(b) over (partition by a,c) from t2) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	16	Using where
+2	DERIVED	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * from (select a, c, sum(b) over (partition by a,c) from t2) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 16,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t2.a, t2.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "possible_keys": ["idx"],
+                "rows": 20,
+                "filtered": 80,
+                "attached_condition": "t2.a > 2 and t2.c in ('aa','bb','cc')"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+n	a	c	s
+1	7	cc	28
+1	7	cc	28
+1	3	aa	92
+1	7	bb	126
+1	4	aa	15
+1	7	bb	126
+1	7	bb	126
+1	3	bb	40
+1	3	aa	92
+2	7	cc	154
+2	7	cc	154
+2	3	aa	132
+2	7	bb	154
+2	4	aa	139
+2	7	bb	154
+2	7	bb	154
+2	3	bb	132
+2	3	aa	132
+select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+n	a	c	s
+1	7	cc	28
+1	7	cc	28
+1	3	aa	92
+1	7	bb	126
+1	4	aa	15
+1	7	bb	126
+1	7	bb	126
+1	3	bb	40
+1	3	aa	92
+2	7	cc	154
+2	7	cc	154
+2	3	aa	132
+2	7	bb	154
+2	4	aa	139
+2	7	bb	154
+2	7	bb	154
+2	3	bb	132
+2	3	aa	132
+explain select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	32	Using where
+2	DERIVED	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+3	UNION	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 32,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "window_functions_computation": {
+                    "sorts": {
+                      "filesort": {
+                        "sort_key": "t2.a, t2.c"
+                      }
+                    },
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t2",
+                        "access_type": "ALL",
+                        "possible_keys": ["idx"],
+                        "rows": 20,
+                        "filtered": 80,
+                        "attached_condition": "t2.a > 2 and t2.c in ('aa','bb','cc')"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "window_functions_computation": {
+                    "sorts": {
+                      "filesort": {
+                        "sort_key": "t2.a"
+                      }
+                    },
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t2",
+                        "access_type": "ALL",
+                        "possible_keys": ["idx"],
+                        "rows": 20,
+                        "filtered": 80,
+                        "attached_condition": "t2.a > 2"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * 
+from (select a, c, sum(b) over (partition by a,c) as s from t2) as t, t1
+where t1.a=t.a and t1.c=t.c and t1.c in ('aa','bb','cc');
+a	c	s	a	c
+1	bb	30	1	bb
+7	bb	126	7	bb
+7	bb	126	7	bb
+7	bb	126	7	bb
+select * 
+from (select a, c, sum(b) over (partition by a,c) as s from t2) as t, t1
+where t1.a=t.a and t1.c=t.c and t1.c in ('aa','bb','cc');
+a	c	s	a	c
+1	bb	30	1	bb
+7	bb	126	7	bb
+7	bb	126	7	bb
+7	bb	126	7	bb
+explain select * 
+from (select a, c, sum(b) over (partition by a,c) as s from t2) as t, t1
+where t1.a=t.a and t1.c=t.c and t1.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	8	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	24	test.t1.a,test.t1.c	2	
+2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * 
+from (select a, c, sum(b) over (partition by a,c) as s from t2) as t, t1
+where t1.a=t.a and t1.c=t.c and t1.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 8,
+      "filtered": 100,
+      "attached_condition": "t1.c in ('aa','bb','cc') and t1.a is not null and t1.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "24",
+      "used_key_parts": ["a", "c"],
+      "ref": ["test.t1.a", "test.t1.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t2.a, t2.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t2.c in ('aa','bb','cc')"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+union all
+select 3 as n, a, c, sum(b) as s from t2 group by a
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+n	a	c	s
+1	7	cc	28
+1	7	cc	28
+1	3	aa	92
+1	7	bb	126
+1	4	aa	15
+1	7	bb	126
+1	7	bb	126
+1	3	bb	40
+1	3	aa	92
+2	7	cc	154
+2	7	cc	154
+2	3	aa	132
+2	7	bb	154
+2	4	aa	139
+2	7	bb	154
+2	7	bb	154
+2	3	bb	132
+2	3	aa	132
+3	3	aa	132
+3	7	cc	154
+select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+union all
+select 3 as n, a, c, sum(b) as s from t2 group by a
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+n	a	c	s
+1	7	cc	28
+1	7	cc	28
+1	3	aa	92
+1	7	bb	126
+1	4	aa	15
+1	7	bb	126
+1	7	bb	126
+1	3	bb	40
+1	3	aa	92
+2	7	cc	154
+2	7	cc	154
+2	3	aa	132
+2	7	bb	154
+2	4	aa	139
+2	7	bb	154
+2	7	bb	154
+2	3	bb	132
+2	3	aa	132
+3	3	aa	132
+3	7	cc	154
+explain select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+union all
+select 3 as n, a, c, sum(b) as s from t2 group by a
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	48	Using where
+2	DERIVED	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+3	UNION	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+4	UNION	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary; Using filesort
+explain format=json select * from
+( 
+select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
+union all
+select 2 as n, a, c, sum(b) over (partition by a) as s from t2
+union all
+select 3 as n, a, c, sum(b) as s from t2 group by a
+) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 48,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "union_result": {
+            "table_name": "<union2,3,4>",
+            "access_type": "ALL",
+            "query_specifications": [
+              {
+                "query_block": {
+                  "select_id": 2,
+                  "window_functions_computation": {
+                    "sorts": {
+                      "filesort": {
+                        "sort_key": "t2.a, t2.c"
+                      }
+                    },
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t2",
+                        "access_type": "ALL",
+                        "possible_keys": ["idx"],
+                        "rows": 20,
+                        "filtered": 80,
+                        "attached_condition": "t2.a > 2 and t2.c in ('aa','bb','cc')"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 3,
+                  "operation": "UNION",
+                  "window_functions_computation": {
+                    "sorts": {
+                      "filesort": {
+                        "sort_key": "t2.a"
+                      }
+                    },
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t2",
+                        "access_type": "ALL",
+                        "possible_keys": ["idx"],
+                        "rows": 20,
+                        "filtered": 80,
+                        "attached_condition": "t2.a > 2"
+                      }
+                    }
+                  }
+                }
+              },
+              {
+                "query_block": {
+                  "select_id": 4,
+                  "operation": "UNION",
+                  "having_condition": "t2.c in ('aa','bb','cc')",
+                  "filesort": {
+                    "sort_key": "t2.a",
+                    "temporary_table": {
+                      "table": {
+                        "table_name": "t2",
+                        "access_type": "ALL",
+                        "possible_keys": ["idx"],
+                        "rows": 20,
+                        "filtered": 80,
+                        "attached_condition": "t2.a > 2"
+                      }
+                    }
+                  }
+                }
+              }
+            ]
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a,c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	14.0000
+7	cc	28	14.0000
+3	aa	92	46.0000
+7	bb	126	42.0000
+4	aa	15	15.0000
+7	bb	126	42.0000
+7	bb	126	42.0000
+3	bb	40	40.0000
+3	aa	92	46.0000
+select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a,c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	14.0000
+7	cc	28	14.0000
+3	aa	92	46.0000
+7	bb	126	42.0000
+4	aa	15	15.0000
+7	bb	126	42.0000
+7	bb	126	42.0000
+3	bb	40	40.0000
+3	aa	92	46.0000
+explain select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a,c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	16	Using where
+2	DERIVED	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a,c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 16,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t2.a, t2.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "possible_keys": ["idx"],
+                "rows": 20,
+                "filtered": 80,
+                "attached_condition": "t2.a > 2 and t2.c in ('aa','bb','cc')"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	30.8000
+7	cc	28	30.8000
+3	aa	92	44.0000
+7	bb	126	30.8000
+4	aa	15	46.3333
+7	bb	126	30.8000
+7	bb	126	30.8000
+3	bb	40	44.0000
+3	aa	92	44.0000
+select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	30.8000
+7	cc	28	30.8000
+3	aa	92	44.0000
+7	bb	126	30.8000
+4	aa	15	46.3333
+7	bb	126	30.8000
+7	bb	126	30.8000
+3	bb	40	44.0000
+3	aa	92	44.0000
+explain select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	16	Using where
+2	DERIVED	t2	ALL	idx	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by a) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 16,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t2.a, t2.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "possible_keys": ["idx"],
+                "rows": 20,
+                "filtered": 80,
+                "attached_condition": "t2.a > 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='condition_pushdown_for_derived=off' for select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	14.0000
+7	cc	28	14.0000
+3	aa	92	35.4000
+7	bb	126	36.5000
+4	aa	15	35.4000
+7	bb	126	36.5000
+7	bb	126	36.5000
+3	bb	40	36.5000
+3	aa	92	35.4000
+select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+a	c	sum_b	avg_b
+7	cc	28	14.0000
+7	cc	28	14.0000
+3	aa	92	35.4000
+7	bb	126	36.5000
+4	aa	15	35.4000
+7	bb	126	36.5000
+7	bb	126	36.5000
+3	bb	40	36.5000
+3	aa	92	35.4000
+explain select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	20	Using where
+2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	20	Using where; Using temporary
+explain format=json select * from (select a, c,
+sum(b) over (partition by a,c) as sum_b,
+avg(b) over (partition by c) as avg_b
+from t2 ) as t
+where t.a > 2 and t.c in ('aa','bb','cc');
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 20,
+      "filtered": 100,
+      "attached_condition": "t.a > 2 and t.c in ('aa','bb','cc')",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t2.a, t2.c"
+              },
+              "filesort": {
+                "sort_key": "t2.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "rows": 20,
+                "filtered": 100,
+                "attached_condition": "t2.c in ('aa','bb','cc')"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop table t1,t2;
+set optimizer_switch= @save_optimizer_switch;
+#
+# MDEV-13369: Optimization for equi-joins of grouping derived tables 
+#             (Splitting derived tables / views with GROUP BY)
+# MDEV-13389: Optimization for equi-joins of derived tables with WF
+#             (Splitting derived tables / views with window functions)
+#
+create table t1 (a int, b int, index idx_b(b)) engine=myisam;
+insert into t1 values
+(8,3), (5,7), (1,2), (2,1), (9,7), (7,5), (2,2), (7,3),
+(9,3), (8,1), (4,5), (2,3);
+create table t2 (a int, b int, c char(127), index idx_a(a)) engine=myisam;
+insert into t2 values
+(7,10,'x'), (1,20,'a'), (2,23,'b'), (7,18,'z'), (1,30,'c'),
+(4,71,'d'), (3,15,'x'), (7,82,'y'), (8,12,'t'), (4,15,'b'),
+(11,33,'a'), (10,42,'u'), (4,53,'p'), (10,17,'r'), (2,90,'x'),
+(17,10,'s'), (11,20,'v'), (12,23,'y'), (17,18,'a'), (11,30,'d'),
+(24,71,'h'), (23,15,'i'), (27,82,'k'), (28,12,'p'), (24,15,'q'),
+(31,33,'f'), (30,42,'h'), (40,53,'m'), (30,17,'o'), (21,90,'b'),
+(37,10,'e'), (31,20,'g'), (32,23,'f'), (37,18,'n'), (41,30,'l'),
+(54,71,'j'), (53,15,'w'), (57,82,'z'), (58,12,'k'), (54,15,'p'),
+(61,33,'c'), (60,42,'a'), (62,53,'x'), (67,17,'g'), (64,90,'v');
+insert into t2 select a+10, b+10, concat(c,'f') from t2;
+analyze table t1,t2;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+test.t2	analyze	status	OK
+set statement optimizer_switch='split_materialized=off' for select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b < 3;
+a	s	m
+2	113	b
+8	12	t
+1	50	a
+2	113	b
+select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b < 3;
+a	s	m
+2	113	b
+8	12	t
+1	50	a
+2	113	b
+explain extended select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b < 3;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	range	idx_b	idx_b	5	NULL	4	100.00	Using index condition; Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t1.a	2	100.00	
+2	LATERAL DERIVED	t2	ref	idx_a	idx_a	5	test.t1.a	2	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`t`.`s` AS `s`,`t`.`m` AS `m` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,sum(`test`.`t2`.`b`) AS `s`,min(`test`.`t2`.`c`) AS `m` from `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`a` group by `test`.`t2`.`a`) `t` where `t`.`a` = `test`.`t1`.`a` and `test`.`t1`.`b` < 3
+explain format=json select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b < 3;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "range",
+      "possible_keys": ["idx_b"],
+      "key": "idx_b",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "rows": 4,
+      "filtered": 100,
+      "index_condition": "t1.b < 3",
+      "attached_condition": "t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t1.a is not null",
+          "table": {
+            "table_name": "t2",
+            "access_type": "ref",
+            "possible_keys": ["idx_a"],
+            "key": "idx_a",
+            "key_length": "5",
+            "used_key_parts": ["a"],
+            "ref": ["test.t1.a"],
+            "rows": 2,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+prepare stmt from "select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b < 3";
+execute stmt;
+a	s	m
+2	113	b
+8	12	t
+1	50	a
+2	113	b
+execute stmt;
+a	s	m
+2	113	b
+8	12	t
+1	50	a
+2	113	b
+deallocate prepare stmt;
+set statement optimizer_switch='split_materialized=off' for select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b <= 5;
+a	s	m
+8	12	12
+1	50	20
+2	113	23
+7	110	10
+2	113	23
+7	110	10
+8	12	12
+4	139	15
+2	113	23
+select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b <= 5;
+a	s	m
+8	12	12
+1	50	20
+2	113	23
+7	110	10
+2	113	23
+7	110	10
+8	12	12
+4	139	15
+2	113	23
+explain extended select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b <= 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	idx_b	NULL	NULL	NULL	12	75.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t1.a	9	100.00	
+2	DERIVED	t2	ALL	idx_a	NULL	NULL	NULL	90	100.00	Using temporary; Using filesort
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`t`.`s` AS `s`,`t`.`m` AS `m` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,sum(`test`.`t2`.`b`) AS `s`,min(`test`.`t2`.`b`) AS `m` from `test`.`t2` group by `test`.`t2`.`a`) `t` where `t`.`a` = `test`.`t1`.`a` and `test`.`t1`.`b` <= 5
+explain format=json select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b <= 5;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "possible_keys": ["idx_b"],
+      "rows": 12,
+      "filtered": 75,
+      "attached_condition": "t1.b <= 5 and t1.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t1.a"],
+      "rows": 9,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t2.a",
+            "temporary_table": {
+              "table": {
+                "table_name": "t2",
+                "access_type": "ALL",
+                "possible_keys": ["idx_a"],
+                "rows": 90,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+prepare stmt from "select t1.a,t.s,t.m
+from t1 join
+(select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
+on t1.a=t.a
+where t1.b <= 5";
+execute stmt;
+a	s	m
+8	12	12
+1	50	20
+2	113	23
+7	110	10
+2	113	23
+7	110	10
+8	12	12
+4	139	15
+2	113	23
+execute stmt;
+a	s	m
+8	12	12
+1	50	20
+2	113	23
+7	110	10
+2	113	23
+7	110	10
+8	12	12
+4	139	15
+2	113	23
+deallocate prepare stmt;
+delete from t1 where t1.b between 2 and 5;
+set statement optimizer_switch='split_materialized=off' for select t1.a,t.max,t.min
+from t1 left join
+(select a, max(t2.b) max, min(t2.b) min from t2 group by t2.a) t
+on t1.a=t.a;
+a	max	min
+5	NULL	NULL
+2	90	23
+9	NULL	NULL
+8	12	12
+select t1.a,t.max,t.min
+from t1 left join
+(select a, max(t2.b) max, min(t2.b) min from t2 group by t2.a) t
+on t1.a=t.a;
+a	max	min
+5	NULL	NULL
+2	90	23
+9	NULL	NULL
+8	12	12
+explain extended select t1.a,t.max,t.min
+from t1 left join
+(select a, max(t2.b) max, min(t2.b) min from t2 group by t2.a) t
+on t1.a=t.a;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	100.00	
+1	PRIMARY	<derived2>	ref	key0	key0	5	test.t1.a	2	100.00	Using where
+2	LATERAL DERIVED	t2	ref	idx_a	idx_a	5	test.t1.a	2	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t1` left join (/* select#2 */ select `test`.`t2`.`a` AS `a`,max(`test`.`t2`.`b`) AS `max`,min(`test`.`t2`.`b`) AS `min` from `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`a` group by `test`.`t2`.`a`) `t` on(`t`.`a` = `test`.`t1`.`a` and `test`.`t1`.`a` is not null) where 1
+explain format=json select t1.a,t.max,t.min
+from t1 left join
+(select a, max(t2.b) max, min(t2.b) min from t2 group by t2.a) t
+on t1.a=t.a;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "const_condition": "1",
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "rows": 4,
+      "filtered": 100
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t1.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "trigcond(trigcond(t1.a is not null))",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t1.a is not null",
+          "table": {
+            "table_name": "t2",
+            "access_type": "ref",
+            "possible_keys": ["idx_a"],
+            "key": "idx_a",
+            "key_length": "5",
+            "used_key_parts": ["a"],
+            "ref": ["test.t1.a"],
+            "rows": 2,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+create table t3 (a int, b int, c char(127), index idx_b(b)) engine=myisam;
+insert into t3 values
+(8,11,'aa'), (5,15,'cc'), (1,14,'bb'), (2,12,'aa'), (7,17,'cc'),
+(7,18,'aa'), (2,11,'aa'), (7,10,'bb'), (3,11,'dd'), (4,12,'ee'),
+(5,14,'dd'), (9,12,'ee');
+create table t4 (a int, b int, c char(127), index idx(a,c)) engine=myisam;
+insert into t4 values
+(7,10,'cc'), (1,20,'aa'), (2,23,'bb'), (7,18,'cc'), (1,30,'bb'),
+(4,71,'xx'), (3,15,'aa'), (7,82,'aa'), (8,12,'dd'), (4,15,'aa'),
+(11,33,'yy'), (10,42,'zz'), (4,53,'xx'), (10,17,'yy'), (7,12,'cc'),
+(8,20,'dd'), (7,32,'bb'), (1,50,'aa'), (3,40,'bb'), (3,77,'aa');
+insert into t4 select a+10, b+10, concat(c,'f') from t4;
+analyze table t3,t4;
+Table	Op	Msg_type	Msg_text
+test.t3	analyze	status	OK
+test.t4	analyze	status	OK
+set statement optimizer_switch='split_materialized=off' for select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+a	c	max	min
+7	cc	18	10
+7	aa	82	82
+select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+a	c	max	min
+7	cc	18	10
+7	aa	82	82
+explain extended select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	range	idx_b	idx_b	5	NULL	3	100.00	Using index condition; Using where
+1	PRIMARY	<derived2>	ref	key0	key0	133	test.t3.a,test.t3.c	2	100.00	
+2	LATERAL DERIVED	t4	ref	idx	idx	133	test.t3.a,test.t3.c	1	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t3` join (/* select#2 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a` and `test`.`t4`.`c` = `test`.`t3`.`c` group by `test`.`t4`.`a`,`test`.`t4`.`c`) `t` where `t`.`a` = `test`.`t3`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t3`.`b` > 15
+explain format=json select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t3",
+      "access_type": "range",
+      "possible_keys": ["idx_b"],
+      "key": "idx_b",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "rows": 3,
+      "filtered": 100,
+      "index_condition": "t3.b > 15",
+      "attached_condition": "t3.a is not null and t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "133",
+      "used_key_parts": ["a", "c"],
+      "ref": ["test.t3.a", "test.t3.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t3.a is not null and t3.c is not null",
+          "table": {
+            "table_name": "t4",
+            "access_type": "ref",
+            "possible_keys": ["idx"],
+            "key": "idx",
+            "key_length": "133",
+            "used_key_parts": ["a", "c"],
+            "ref": ["test.t3.a", "test.t3.c"],
+            "rows": 1,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+a	c	max	min
+1	bb	30	30
+7	bb	32	32
+select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+a	c	max	min
+1	bb	30	30
+7	bb	32	32
+explain extended select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	ALL	idx_b	NULL	NULL	NULL	12	75.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	133	test.t3.a,test.t3.c	4	100.00	
+2	DERIVED	t4	ALL	idx	NULL	NULL	NULL	40	100.00	Using temporary; Using filesort
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t3` join (/* select#2 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` group by `test`.`t4`.`a`,`test`.`t4`.`c`) `t` where `t`.`a` = `test`.`t3`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t3`.`b` <= 15
+explain format=json select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by a,c) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t3",
+      "access_type": "ALL",
+      "possible_keys": ["idx_b"],
+      "rows": 12,
+      "filtered": 75,
+      "attached_condition": "t3.b <= 15 and t3.a is not null and t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "133",
+      "used_key_parts": ["a", "c"],
+      "ref": ["test.t3.a", "test.t3.c"],
+      "rows": 4,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t4.a, t4.c",
+            "temporary_table": {
+              "table": {
+                "table_name": "t4",
+                "access_type": "ALL",
+                "possible_keys": ["idx"],
+                "rows": 40,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+a	c	max	min
+7	cc	18	10
+7	aa	82	82
+select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+a	c	max	min
+7	cc	18	10
+7	aa	82	82
+explain extended select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	range	idx_b	idx_b	5	NULL	3	100.00	Using index condition; Using where
+1	PRIMARY	<derived2>	ref	key0	key0	133	test.t3.a,test.t3.c	2	100.00	
+2	LATERAL DERIVED	t4	ref	idx	idx	133	test.t3.a,test.t3.c	1	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t3` join (/* select#2 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a` and `test`.`t4`.`c` = `test`.`t3`.`c` group by `test`.`t4`.`c`,`test`.`t4`.`a`) `t` where `t`.`a` = `test`.`t3`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t3`.`b` > 15
+explain format=json select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b > 15;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t3",
+      "access_type": "range",
+      "possible_keys": ["idx_b"],
+      "key": "idx_b",
+      "key_length": "5",
+      "used_key_parts": ["b"],
+      "rows": 3,
+      "filtered": 100,
+      "index_condition": "t3.b > 15",
+      "attached_condition": "t3.a is not null and t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "133",
+      "used_key_parts": ["a", "c"],
+      "ref": ["test.t3.a", "test.t3.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t3.a is not null and t3.c is not null",
+          "table": {
+            "table_name": "t4",
+            "access_type": "ref",
+            "possible_keys": ["idx"],
+            "key": "idx",
+            "key_length": "133",
+            "used_key_parts": ["a", "c"],
+            "ref": ["test.t3.a", "test.t3.c"],
+            "rows": 1,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+a	c	max	min
+1	bb	30	30
+7	bb	32	32
+select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+a	c	max	min
+1	bb	30	30
+7	bb	32	32
+explain extended select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	ALL	idx_b	NULL	NULL	NULL	12	75.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	133	test.t3.a,test.t3.c	4	100.00	
+2	DERIVED	t4	ALL	idx	NULL	NULL	NULL	40	100.00	Using temporary; Using filesort
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t3` join (/* select#2 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` group by `test`.`t4`.`c`,`test`.`t4`.`a`) `t` where `t`.`a` = `test`.`t3`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t3`.`b` <= 15
+explain format=json select t3.a,t3.c,t.max,t.min
+from t3 join
+(select a, c, max(b) max, min(b) min from t4 group by c,a) t
+on t3.a=t.a and t3.c=t.c
+where t3.b <= 15;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t3",
+      "access_type": "ALL",
+      "possible_keys": ["idx_b"],
+      "rows": 12,
+      "filtered": 75,
+      "attached_condition": "t3.b <= 15 and t3.a is not null and t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "133",
+      "used_key_parts": ["a", "c"],
+      "ref": ["test.t3.a", "test.t3.c"],
+      "rows": 4,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t4.c, t4.a",
+            "temporary_table": {
+              "table": {
+                "table_name": "t4",
+                "access_type": "ALL",
+                "possible_keys": ["idx"],
+                "rows": 40,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop index idx_a on t2;
+create index idx on t2(c,b);
+create index idx_a on t3(a);
+create index idx_c on t4(c);
+insert into t3 select a+10, b+10, concat(c,'f') from t3;
+insert into t3 select a+100, b+100, concat(c,'g')  from t3;
+insert into t4 select a+100, b+100, concat(c,'g') from t4;
+insert into t4 select a+1000, b+1000, concat(c,'h') from t4;
+analyze table t2,t3,t4;
+Table	Op	Msg_type	Msg_text
+test.t2	analyze	status	OK
+test.t3	analyze	status	OK
+test.t4	analyze	status	OK
+set statement optimizer_switch='split_materialized=off' for select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+a	b	c	t_c	max	min
+7	82	y	cc	18	10
+7	82	y	aa	82	15
+7	82	y	bb	40	23
+select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+a	b	c	t_c	max	min
+7	82	y	cc	18	10
+7	82	y	aa	82	15
+7	82	y	bb	40	23
+explain extended select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	range	idx	idx	133	NULL	2	100.00	Using index condition; Using where
+1	PRIMARY	t3	ref	idx_a	idx_a	5	test.t2.a	2	100.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	128	test.t3.c	2	100.00	
+2	LATERAL DERIVED	t4	ref	idx_c	idx_c	128	test.t3.c	3	100.00	
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`t`.`c` AS `t_c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t2` join `test`.`t3` join (/* select#2 */ select `test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` where `test`.`t4`.`c` = `test`.`t3`.`c` group by `test`.`t4`.`c`) `t` where `test`.`t3`.`a` = `test`.`t2`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t2`.`b` between 80 and 85 and `test`.`t2`.`c` in ('y','z')
+explain format=json select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "range",
+      "possible_keys": ["idx"],
+      "key": "idx",
+      "key_length": "133",
+      "used_key_parts": ["c", "b"],
+      "rows": 2,
+      "filtered": 100,
+      "index_condition": "t2.b between 80 and 85 and t2.c in ('y','z')",
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "t3",
+      "access_type": "ref",
+      "possible_keys": ["idx_a"],
+      "key": "idx_a",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "128",
+      "used_key_parts": ["c"],
+      "ref": ["test.t3.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t3.c is not null",
+          "table": {
+            "table_name": "t4",
+            "access_type": "ref",
+            "possible_keys": ["idx_c"],
+            "key": "idx_c",
+            "key_length": "128",
+            "used_key_parts": ["c"],
+            "ref": ["test.t3.c"],
+            "rows": 3,
+            "filtered": 100
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+a	b	c	t_c	max	min
+7	10	x	cc	18	10
+7	10	x	aa	82	15
+7	10	x	bb	40	23
+1	20	a	bb	40	23
+2	23	b	aa	82	15
+2	23	b	aa	82	15
+7	18	z	cc	18	10
+7	18	z	aa	82	15
+7	18	z	bb	40	23
+1	30	c	bb	40	23
+3	15	x	dd	20	12
+8	12	t	aa	82	15
+11	33	a	bbf	50	33
+17	10	s	ccf	28	20
+17	10	s	aaf	92	25
+17	10	s	bbf	50	33
+11	20	v	bbf	50	33
+12	23	y	aaf	92	25
+12	23	y	aaf	92	25
+17	18	a	ccf	28	20
+17	18	a	aaf	92	25
+17	18	a	bbf	50	33
+11	30	d	bbf	50	33
+17	20	xf	ccf	28	20
+17	20	xf	aaf	92	25
+17	20	xf	bbf	50	33
+11	30	af	bbf	50	33
+12	33	bf	aaf	92	25
+12	33	bf	aaf	92	25
+17	28	zf	ccf	28	20
+17	28	zf	aaf	92	25
+17	28	zf	bbf	50	33
+13	25	xf	ddf	30	22
+18	22	tf	aaf	92	25
+select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+a	b	c	t_c	max	min
+7	10	x	cc	18	10
+7	10	x	aa	82	15
+7	10	x	bb	40	23
+1	20	a	bb	40	23
+2	23	b	aa	82	15
+2	23	b	aa	82	15
+7	18	z	cc	18	10
+7	18	z	aa	82	15
+7	18	z	bb	40	23
+1	30	c	bb	40	23
+3	15	x	dd	20	12
+8	12	t	aa	82	15
+11	33	a	bbf	50	33
+17	10	s	ccf	28	20
+17	10	s	aaf	92	25
+17	10	s	bbf	50	33
+11	20	v	bbf	50	33
+12	23	y	aaf	92	25
+12	23	y	aaf	92	25
+17	18	a	ccf	28	20
+17	18	a	aaf	92	25
+17	18	a	bbf	50	33
+11	30	d	bbf	50	33
+17	20	xf	ccf	28	20
+17	20	xf	aaf	92	25
+17	20	xf	bbf	50	33
+11	30	af	bbf	50	33
+12	33	bf	aaf	92	25
+12	33	bf	aaf	92	25
+17	28	zf	ccf	28	20
+17	28	zf	aaf	92	25
+17	28	zf	bbf	50	33
+13	25	xf	ddf	30	22
+18	22	tf	aaf	92	25
+explain extended select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	90	100.00	Using where
+1	PRIMARY	t3	ref	idx_a	idx_a	5	test.t2.a	2	100.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	128	test.t3.c	10	100.00	
+2	DERIVED	t4	ALL	idx_c	NULL	NULL	NULL	160	100.00	Using temporary; Using filesort
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`t`.`c` AS `t_c`,`t`.`max` AS `max`,`t`.`min` AS `min` from `test`.`t2` join `test`.`t3` join (/* select#2 */ select `test`.`t4`.`c` AS `c`,max(`test`.`t4`.`b`) AS `max`,min(`test`.`t4`.`b`) AS `min` from `test`.`t4` group by `test`.`t4`.`c`) `t` where `test`.`t3`.`a` = `test`.`t2`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t2`.`b` < 40
+explain format=json select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
+from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 90,
+      "filtered": 100,
+      "attached_condition": "t2.b < 40 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "t3",
+      "access_type": "ref",
+      "possible_keys": ["idx_a"],
+      "key": "idx_a",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "128",
+      "used_key_parts": ["c"],
+      "ref": ["test.t3.c"],
+      "rows": 10,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t4.c",
+            "temporary_table": {
+              "table": {
+                "table_name": "t4",
+                "access_type": "ALL",
+                "possible_keys": ["idx_c"],
+                "rows": 160,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+a	b	c	a	b	c	c	b	sum(b) over (partition by c)
+7	82	y	7	17	cc	cc	12	40
+7	82	y	7	17	cc	cc	18	40
+7	82	y	7	17	cc	cc	10	40
+7	82	y	7	18	aa	aa	77	259
+7	82	y	7	18	aa	aa	50	259
+7	82	y	7	18	aa	aa	15	259
+7	82	y	7	18	aa	aa	82	259
+7	82	y	7	18	aa	aa	15	259
+7	82	y	7	18	aa	aa	20	259
+7	82	y	7	10	bb	bb	40	125
+7	82	y	7	10	bb	bb	32	125
+7	82	y	7	10	bb	bb	30	125
+7	82	y	7	10	bb	bb	23	125
+select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+a	b	c	a	b	c	c	b	sum(b) over (partition by c)
+7	82	y	7	17	cc	cc	12	40
+7	82	y	7	17	cc	cc	18	40
+7	82	y	7	17	cc	cc	10	40
+7	82	y	7	18	aa	aa	77	259
+7	82	y	7	18	aa	aa	50	259
+7	82	y	7	18	aa	aa	15	259
+7	82	y	7	18	aa	aa	82	259
+7	82	y	7	18	aa	aa	15	259
+7	82	y	7	18	aa	aa	20	259
+7	82	y	7	10	bb	bb	40	125
+7	82	y	7	10	bb	bb	32	125
+7	82	y	7	10	bb	bb	30	125
+7	82	y	7	10	bb	bb	23	125
+explain extended select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	range	idx	idx	133	NULL	2	100.00	Using index condition; Using where
+1	PRIMARY	t3	ref	idx_a	idx_a	5	test.t2.a	2	100.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	128	test.t3.c	2	100.00	
+2	LATERAL DERIVED	t4	ref	idx_c	idx_c	128	test.t3.c	3	100.00	Using temporary
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t3`.`c` AS `c`,`t`.`c` AS `c`,`t`.`b` AS `b`,`t`.`sum(b) over (partition by c)` AS `sum(b) over (partition by c)` from `test`.`t2` join `test`.`t3` join (/* select#2 */ select `test`.`t4`.`c` AS `c`,`test`.`t4`.`b` AS `b`,sum(`test`.`t4`.`b`) over ( partition by `test`.`t4`.`c`) AS `sum(b) over (partition by c)` from `test`.`t4` where `test`.`t4`.`c` = `test`.`t3`.`c`) `t` where `test`.`t3`.`a` = `test`.`t2`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t2`.`b` between 80 and 85 and `test`.`t2`.`c` in ('y','z')
+explain format=json select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "range",
+      "possible_keys": ["idx"],
+      "key": "idx",
+      "key_length": "133",
+      "used_key_parts": ["c", "b"],
+      "rows": 2,
+      "filtered": 100,
+      "index_condition": "t2.b between 80 and 85 and t2.c in ('y','z')",
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "t3",
+      "access_type": "ref",
+      "possible_keys": ["idx_a"],
+      "key": "idx_a",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "128",
+      "used_key_parts": ["c"],
+      "ref": ["test.t3.c"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t3.c is not null",
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t4.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t4",
+                "access_type": "ref",
+                "possible_keys": ["idx_c"],
+                "key": "idx_c",
+                "key_length": "128",
+                "used_key_parts": ["c"],
+                "ref": ["test.t3.c"],
+                "rows": 3,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+set statement optimizer_switch='split_materialized=off' for select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+a	b	c	a	b	c	c	b	sum(b) over (partition by c)
+7	10	x	7	17	cc	cc	12	40
+7	10	x	7	17	cc	cc	18	40
+7	10	x	7	17	cc	cc	10	40
+7	10	x	7	18	aa	aa	77	259
+7	10	x	7	18	aa	aa	50	259
+7	10	x	7	18	aa	aa	15	259
+7	10	x	7	18	aa	aa	82	259
+7	10	x	7	18	aa	aa	15	259
+7	10	x	7	18	aa	aa	20	259
+7	10	x	7	10	bb	bb	40	125
+7	10	x	7	10	bb	bb	32	125
+7	10	x	7	10	bb	bb	30	125
+7	10	x	7	10	bb	bb	23	125
+1	20	a	1	14	bb	bb	40	125
+1	20	a	1	14	bb	bb	32	125
+1	20	a	1	14	bb	bb	30	125
+1	20	a	1	14	bb	bb	23	125
+2	23	b	2	12	aa	aa	77	259
+2	23	b	2	12	aa	aa	50	259
+2	23	b	2	12	aa	aa	15	259
+2	23	b	2	12	aa	aa	82	259
+2	23	b	2	12	aa	aa	15	259
+2	23	b	2	12	aa	aa	20	259
+2	23	b	2	11	aa	aa	77	259
+2	23	b	2	11	aa	aa	50	259
+2	23	b	2	11	aa	aa	15	259
+2	23	b	2	11	aa	aa	82	259
+2	23	b	2	11	aa	aa	15	259
+2	23	b	2	11	aa	aa	20	259
+7	18	z	7	17	cc	cc	12	40
+7	18	z	7	17	cc	cc	18	40
+7	18	z	7	17	cc	cc	10	40
+7	18	z	7	18	aa	aa	77	259
+7	18	z	7	18	aa	aa	50	259
+7	18	z	7	18	aa	aa	15	259
+7	18	z	7	18	aa	aa	82	259
+7	18	z	7	18	aa	aa	15	259
+7	18	z	7	18	aa	aa	20	259
+7	18	z	7	10	bb	bb	40	125
+7	18	z	7	10	bb	bb	32	125
+7	18	z	7	10	bb	bb	30	125
+7	18	z	7	10	bb	bb	23	125
+1	30	c	1	14	bb	bb	40	125
+1	30	c	1	14	bb	bb	32	125
+1	30	c	1	14	bb	bb	30	125
+1	30	c	1	14	bb	bb	23	125
+3	15	x	3	11	dd	dd	20	32
+3	15	x	3	11	dd	dd	12	32
+8	12	t	8	11	aa	aa	77	259
+8	12	t	8	11	aa	aa	50	259
+8	12	t	8	11	aa	aa	15	259
+8	12	t	8	11	aa	aa	82	259
+8	12	t	8	11	aa	aa	15	259
+8	12	t	8	11	aa	aa	20	259
+11	33	a	11	24	bbf	bbf	50	165
+11	33	a	11	24	bbf	bbf	42	165
+11	33	a	11	24	bbf	bbf	40	165
+11	33	a	11	24	bbf	bbf	33	165
+17	10	s	17	27	ccf	ccf	22	70
+17	10	s	17	27	ccf	ccf	28	70
+17	10	s	17	27	ccf	ccf	20	70
+17	10	s	17	28	aaf	aaf	87	319
+17	10	s	17	28	aaf	aaf	60	319
+17	10	s	17	28	aaf	aaf	25	319
+17	10	s	17	28	aaf	aaf	92	319
+17	10	s	17	28	aaf	aaf	25	319
+17	10	s	17	28	aaf	aaf	30	319
+17	10	s	17	20	bbf	bbf	50	165
+17	10	s	17	20	bbf	bbf	42	165
+17	10	s	17	20	bbf	bbf	40	165
+17	10	s	17	20	bbf	bbf	33	165
+11	20	v	11	24	bbf	bbf	50	165
+11	20	v	11	24	bbf	bbf	42	165
+11	20	v	11	24	bbf	bbf	40	165
+11	20	v	11	24	bbf	bbf	33	165
+12	23	y	12	22	aaf	aaf	87	319
+12	23	y	12	22	aaf	aaf	60	319
+12	23	y	12	22	aaf	aaf	25	319
+12	23	y	12	22	aaf	aaf	92	319
+12	23	y	12	22	aaf	aaf	25	319
+12	23	y	12	22	aaf	aaf	30	319
+12	23	y	12	21	aaf	aaf	87	319
+12	23	y	12	21	aaf	aaf	60	319
+12	23	y	12	21	aaf	aaf	25	319
+12	23	y	12	21	aaf	aaf	92	319
+12	23	y	12	21	aaf	aaf	25	319
+12	23	y	12	21	aaf	aaf	30	319
+17	18	a	17	27	ccf	ccf	22	70
+17	18	a	17	27	ccf	ccf	28	70
+17	18	a	17	27	ccf	ccf	20	70
+17	18	a	17	28	aaf	aaf	87	319
+17	18	a	17	28	aaf	aaf	60	319
+17	18	a	17	28	aaf	aaf	25	319
+17	18	a	17	28	aaf	aaf	92	319
+17	18	a	17	28	aaf	aaf	25	319
+17	18	a	17	28	aaf	aaf	30	319
+17	18	a	17	20	bbf	bbf	50	165
+17	18	a	17	20	bbf	bbf	42	165
+17	18	a	17	20	bbf	bbf	40	165
+17	18	a	17	20	bbf	bbf	33	165
+11	30	d	11	24	bbf	bbf	50	165
+11	30	d	11	24	bbf	bbf	42	165
+11	30	d	11	24	bbf	bbf	40	165
+11	30	d	11	24	bbf	bbf	33	165
+17	20	xf	17	27	ccf	ccf	22	70
+17	20	xf	17	27	ccf	ccf	28	70
+17	20	xf	17	27	ccf	ccf	20	70
+17	20	xf	17	28	aaf	aaf	87	319
+17	20	xf	17	28	aaf	aaf	60	319
+17	20	xf	17	28	aaf	aaf	25	319
+17	20	xf	17	28	aaf	aaf	92	319
+17	20	xf	17	28	aaf	aaf	25	319
+17	20	xf	17	28	aaf	aaf	30	319
+17	20	xf	17	20	bbf	bbf	50	165
+17	20	xf	17	20	bbf	bbf	42	165
+17	20	xf	17	20	bbf	bbf	40	165
+17	20	xf	17	20	bbf	bbf	33	165
+11	30	af	11	24	bbf	bbf	50	165
+11	30	af	11	24	bbf	bbf	42	165
+11	30	af	11	24	bbf	bbf	40	165
+11	30	af	11	24	bbf	bbf	33	165
+12	33	bf	12	22	aaf	aaf	87	319
+12	33	bf	12	22	aaf	aaf	60	319
+12	33	bf	12	22	aaf	aaf	25	319
+12	33	bf	12	22	aaf	aaf	92	319
+12	33	bf	12	22	aaf	aaf	25	319
+12	33	bf	12	22	aaf	aaf	30	319
+12	33	bf	12	21	aaf	aaf	87	319
+12	33	bf	12	21	aaf	aaf	60	319
+12	33	bf	12	21	aaf	aaf	25	319
+12	33	bf	12	21	aaf	aaf	92	319
+12	33	bf	12	21	aaf	aaf	25	319
+12	33	bf	12	21	aaf	aaf	30	319
+17	28	zf	17	27	ccf	ccf	22	70
+17	28	zf	17	27	ccf	ccf	28	70
+17	28	zf	17	27	ccf	ccf	20	70
+17	28	zf	17	28	aaf	aaf	87	319
+17	28	zf	17	28	aaf	aaf	60	319
+17	28	zf	17	28	aaf	aaf	25	319
+17	28	zf	17	28	aaf	aaf	92	319
+17	28	zf	17	28	aaf	aaf	25	319
+17	28	zf	17	28	aaf	aaf	30	319
+17	28	zf	17	20	bbf	bbf	50	165
+17	28	zf	17	20	bbf	bbf	42	165
+17	28	zf	17	20	bbf	bbf	40	165
+17	28	zf	17	20	bbf	bbf	33	165
+13	25	xf	13	21	ddf	ddf	30	52
+13	25	xf	13	21	ddf	ddf	22	52
+18	22	tf	18	21	aaf	aaf	87	319
+18	22	tf	18	21	aaf	aaf	60	319
+18	22	tf	18	21	aaf	aaf	25	319
+18	22	tf	18	21	aaf	aaf	92	319
+18	22	tf	18	21	aaf	aaf	25	319
+18	22	tf	18	21	aaf	aaf	30	319
+select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+a	b	c	a	b	c	c	b	sum(b) over (partition by c)
+7	10	x	7	17	cc	cc	12	40
+7	10	x	7	17	cc	cc	18	40
+7	10	x	7	17	cc	cc	10	40
+7	10	x	7	18	aa	aa	77	259
+7	10	x	7	18	aa	aa	50	259
+7	10	x	7	18	aa	aa	15	259
+7	10	x	7	18	aa	aa	82	259
+7	10	x	7	18	aa	aa	15	259
+7	10	x	7	18	aa	aa	20	259
+7	10	x	7	10	bb	bb	40	125
+7	10	x	7	10	bb	bb	32	125
+7	10	x	7	10	bb	bb	30	125
+7	10	x	7	10	bb	bb	23	125
+1	20	a	1	14	bb	bb	40	125
+1	20	a	1	14	bb	bb	32	125
+1	20	a	1	14	bb	bb	30	125
+1	20	a	1	14	bb	bb	23	125
+2	23	b	2	12	aa	aa	77	259
+2	23	b	2	12	aa	aa	50	259
+2	23	b	2	12	aa	aa	15	259
+2	23	b	2	12	aa	aa	82	259
+2	23	b	2	12	aa	aa	15	259
+2	23	b	2	12	aa	aa	20	259
+2	23	b	2	11	aa	aa	77	259
+2	23	b	2	11	aa	aa	50	259
+2	23	b	2	11	aa	aa	15	259
+2	23	b	2	11	aa	aa	82	259
+2	23	b	2	11	aa	aa	15	259
+2	23	b	2	11	aa	aa	20	259
+7	18	z	7	17	cc	cc	12	40
+7	18	z	7	17	cc	cc	18	40
+7	18	z	7	17	cc	cc	10	40
+7	18	z	7	18	aa	aa	77	259
+7	18	z	7	18	aa	aa	50	259
+7	18	z	7	18	aa	aa	15	259
+7	18	z	7	18	aa	aa	82	259
+7	18	z	7	18	aa	aa	15	259
+7	18	z	7	18	aa	aa	20	259
+7	18	z	7	10	bb	bb	40	125
+7	18	z	7	10	bb	bb	32	125
+7	18	z	7	10	bb	bb	30	125
+7	18	z	7	10	bb	bb	23	125
+1	30	c	1	14	bb	bb	40	125
+1	30	c	1	14	bb	bb	32	125
+1	30	c	1	14	bb	bb	30	125
+1	30	c	1	14	bb	bb	23	125
+3	15	x	3	11	dd	dd	20	32
+3	15	x	3	11	dd	dd	12	32
+8	12	t	8	11	aa	aa	77	259
+8	12	t	8	11	aa	aa	50	259
+8	12	t	8	11	aa	aa	15	259
+8	12	t	8	11	aa	aa	82	259
+8	12	t	8	11	aa	aa	15	259
+8	12	t	8	11	aa	aa	20	259
+11	33	a	11	24	bbf	bbf	50	165
+11	33	a	11	24	bbf	bbf	42	165
+11	33	a	11	24	bbf	bbf	40	165
+11	33	a	11	24	bbf	bbf	33	165
+17	10	s	17	27	ccf	ccf	22	70
+17	10	s	17	27	ccf	ccf	28	70
+17	10	s	17	27	ccf	ccf	20	70
+17	10	s	17	28	aaf	aaf	87	319
+17	10	s	17	28	aaf	aaf	60	319
+17	10	s	17	28	aaf	aaf	25	319
+17	10	s	17	28	aaf	aaf	92	319
+17	10	s	17	28	aaf	aaf	25	319
+17	10	s	17	28	aaf	aaf	30	319
+17	10	s	17	20	bbf	bbf	50	165
+17	10	s	17	20	bbf	bbf	42	165
+17	10	s	17	20	bbf	bbf	40	165
+17	10	s	17	20	bbf	bbf	33	165
+11	20	v	11	24	bbf	bbf	50	165
+11	20	v	11	24	bbf	bbf	42	165
+11	20	v	11	24	bbf	bbf	40	165
+11	20	v	11	24	bbf	bbf	33	165
+12	23	y	12	22	aaf	aaf	87	319
+12	23	y	12	22	aaf	aaf	60	319
+12	23	y	12	22	aaf	aaf	25	319
+12	23	y	12	22	aaf	aaf	92	319
+12	23	y	12	22	aaf	aaf	25	319
+12	23	y	12	22	aaf	aaf	30	319
+12	23	y	12	21	aaf	aaf	87	319
+12	23	y	12	21	aaf	aaf	60	319
+12	23	y	12	21	aaf	aaf	25	319
+12	23	y	12	21	aaf	aaf	92	319
+12	23	y	12	21	aaf	aaf	25	319
+12	23	y	12	21	aaf	aaf	30	319
+17	18	a	17	27	ccf	ccf	22	70
+17	18	a	17	27	ccf	ccf	28	70
+17	18	a	17	27	ccf	ccf	20	70
+17	18	a	17	28	aaf	aaf	87	319
+17	18	a	17	28	aaf	aaf	60	319
+17	18	a	17	28	aaf	aaf	25	319
+17	18	a	17	28	aaf	aaf	92	319
+17	18	a	17	28	aaf	aaf	25	319
+17	18	a	17	28	aaf	aaf	30	319
+17	18	a	17	20	bbf	bbf	50	165
+17	18	a	17	20	bbf	bbf	42	165
+17	18	a	17	20	bbf	bbf	40	165
+17	18	a	17	20	bbf	bbf	33	165
+11	30	d	11	24	bbf	bbf	50	165
+11	30	d	11	24	bbf	bbf	42	165
+11	30	d	11	24	bbf	bbf	40	165
+11	30	d	11	24	bbf	bbf	33	165
+17	20	xf	17	27	ccf	ccf	22	70
+17	20	xf	17	27	ccf	ccf	28	70
+17	20	xf	17	27	ccf	ccf	20	70
+17	20	xf	17	28	aaf	aaf	87	319
+17	20	xf	17	28	aaf	aaf	60	319
+17	20	xf	17	28	aaf	aaf	25	319
+17	20	xf	17	28	aaf	aaf	92	319
+17	20	xf	17	28	aaf	aaf	25	319
+17	20	xf	17	28	aaf	aaf	30	319
+17	20	xf	17	20	bbf	bbf	50	165
+17	20	xf	17	20	bbf	bbf	42	165
+17	20	xf	17	20	bbf	bbf	40	165
+17	20	xf	17	20	bbf	bbf	33	165
+11	30	af	11	24	bbf	bbf	50	165
+11	30	af	11	24	bbf	bbf	42	165
+11	30	af	11	24	bbf	bbf	40	165
+11	30	af	11	24	bbf	bbf	33	165
+12	33	bf	12	22	aaf	aaf	87	319
+12	33	bf	12	22	aaf	aaf	60	319
+12	33	bf	12	22	aaf	aaf	25	319
+12	33	bf	12	22	aaf	aaf	92	319
+12	33	bf	12	22	aaf	aaf	25	319
+12	33	bf	12	22	aaf	aaf	30	319
+12	33	bf	12	21	aaf	aaf	87	319
+12	33	bf	12	21	aaf	aaf	60	319
+12	33	bf	12	21	aaf	aaf	25	319
+12	33	bf	12	21	aaf	aaf	92	319
+12	33	bf	12	21	aaf	aaf	25	319
+12	33	bf	12	21	aaf	aaf	30	319
+17	28	zf	17	27	ccf	ccf	22	70
+17	28	zf	17	27	ccf	ccf	28	70
+17	28	zf	17	27	ccf	ccf	20	70
+17	28	zf	17	28	aaf	aaf	87	319
+17	28	zf	17	28	aaf	aaf	60	319
+17	28	zf	17	28	aaf	aaf	25	319
+17	28	zf	17	28	aaf	aaf	92	319
+17	28	zf	17	28	aaf	aaf	25	319
+17	28	zf	17	28	aaf	aaf	30	319
+17	28	zf	17	20	bbf	bbf	50	165
+17	28	zf	17	20	bbf	bbf	42	165
+17	28	zf	17	20	bbf	bbf	40	165
+17	28	zf	17	20	bbf	bbf	33	165
+13	25	xf	13	21	ddf	ddf	30	52
+13	25	xf	13	21	ddf	ddf	22	52
+18	22	tf	18	21	aaf	aaf	87	319
+18	22	tf	18	21	aaf	aaf	60	319
+18	22	tf	18	21	aaf	aaf	25	319
+18	22	tf	18	21	aaf	aaf	92	319
+18	22	tf	18	21	aaf	aaf	25	319
+18	22	tf	18	21	aaf	aaf	30	319
+explain extended select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	90	100.00	Using where
+1	PRIMARY	t3	ref	idx_a	idx_a	5	test.t2.a	2	100.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	128	test.t3.c	10	100.00	
+2	DERIVED	t4	ALL	idx_c	NULL	NULL	NULL	160	100.00	Using temporary
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t3`.`c` AS `c`,`t`.`c` AS `c`,`t`.`b` AS `b`,`t`.`sum(b) over (partition by c)` AS `sum(b) over (partition by c)` from `test`.`t2` join `test`.`t3` join (/* select#2 */ select `test`.`t4`.`c` AS `c`,`test`.`t4`.`b` AS `b`,sum(`test`.`t4`.`b`) over ( partition by `test`.`t4`.`c`) AS `sum(b) over (partition by c)` from `test`.`t4`) `t` where `test`.`t3`.`a` = `test`.`t2`.`a` and `t`.`c` = `test`.`t3`.`c` and `test`.`t2`.`b` < 40
+explain format=json select *
+from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
+where t2.b < 40 and t2.a=t3.a and t3.c=t.c;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 90,
+      "filtered": 100,
+      "attached_condition": "t2.b < 40 and t2.a is not null"
+    },
+    "table": {
+      "table_name": "t3",
+      "access_type": "ref",
+      "possible_keys": ["idx_a"],
+      "key": "idx_a",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t3.c is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "128",
+      "used_key_parts": ["c"],
+      "ref": ["test.t3.c"],
+      "rows": 10,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "window_functions_computation": {
+            "sorts": {
+              "filesort": {
+                "sort_key": "t4.c"
+              }
+            },
+            "temporary_table": {
+              "table": {
+                "table_name": "t4",
+                "access_type": "ALL",
+                "possible_keys": ["idx_c"],
+                "rows": 160,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+drop table t1,t2,t3,t4;
+#
+# MDEV-13709: Optimization for semi-joins of grouping derived tables
+#             (Splitting derived tables / views with GROUP BY)
+#
+CREATE TABLE t1 (i int);
+INSERT INTO t1 VALUES (1),(9),(3);
+CREATE TABLE t2 (a int, i int);
+INSERT INTO t2 VALUES (1,9),(2,3),(3,7),(4,1);
+CREATE TABLE t3 (a int, c char(127), index(c));
+INSERT INTO t3 VALUES (1,'foo'),(3,'bar'),(4,'foo'),(2,'bar');
+INSERT INTO t3 SELECT a, concat(c,'a') FROM t3;
+CREATE TABLE t4 (a int, c char(127), index(a));
+INSERT INTO t4 VALUES
+(3,'abc'),(1,'foo'),(4,'def'),(8,'xxx'),(3,'yyy'),
+(5,'zzz'),(9,'xyz'),(2,'yxz'),(5,'zxy'),(7,'zyx') ;
+ANALYZE TABLE t1,t2,t3,t4;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+test.t2	analyze	status	OK
+test.t3	analyze	status	OK
+test.t4	analyze	status	OK
+CREATE VIEW v1 AS
+SELECT c FROM t3
+WHERE a IN ( SELECT t2.a FROM t1 JOIN t2 WHERE t1.i = t2.i ) GROUP BY c ;
+set statement optimizer_switch='split_materialized=off' for SELECT * FROM t4 WHERE c IN ( SELECT c FROM v1 ) and a < 2;
+a	c
+1	foo
+SELECT * FROM t4 WHERE c IN ( SELECT c FROM v1 ) and a < 2;
+a	c
+1	foo
+explain extended SELECT * FROM t4 WHERE c IN ( SELECT c FROM v1 ) and a < 2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t4	range	a	a	5	NULL	1	100.00	Using index condition; Using where
+1	PRIMARY	<derived3>	ref	key0	key0	128	test.t4.c	2	100.00	FirstMatch(t4)
+3	LATERAL DERIVED	t3	ref	c	c	128	test.t4.c	2	100.00	
+3	LATERAL DERIVED	<subquery4>	eq_ref	distinct_key	distinct_key	4	func	1	100.00	
+4	MATERIALIZED	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
+4	MATERIALIZED	t2	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where; Using join buffer (flat, BNL join)
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`c` AS `c` from `test`.`t4` semi join (`test`.`v1`) where `v1`.`c` = `test`.`t4`.`c` and `test`.`t4`.`a` < 2
+explain format=json SELECT * FROM t4 WHERE c IN ( SELECT c FROM v1 ) and a < 2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t4",
+      "access_type": "range",
+      "possible_keys": ["a"],
+      "key": "a",
+      "key_length": "5",
+      "used_key_parts": ["a"],
+      "rows": 1,
+      "filtered": 100,
+      "index_condition": "t4.a < 2",
+      "attached_condition": "t4.c is not null"
+    },
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "128",
+      "used_key_parts": ["c"],
+      "ref": ["test.t4.c"],
+      "rows": 2,
+      "filtered": 100,
+      "first_match": "t4",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "const_condition": "1",
+          "outer_ref_condition": "t4.c is not null",
+          "table": {
+            "table_name": "t3",
+            "access_type": "ref",
+            "possible_keys": ["c"],
+            "key": "c",
+            "key_length": "128",
+            "used_key_parts": ["c"],
+            "ref": ["test.t4.c"],
+            "rows": 2,
+            "filtered": 100
+          },
+          "table": {
+            "table_name": "<subquery4>",
+            "access_type": "eq_ref",
+            "possible_keys": ["distinct_key"],
+            "key": "distinct_key",
+            "key_length": "4",
+            "used_key_parts": ["a"],
+            "ref": ["func"],
+            "rows": 1,
+            "filtered": 100,
+            "materialized": {
+              "unique": 1,
+              "query_block": {
+                "select_id": 4,
+                "table": {
+                  "table_name": "t1",
+                  "access_type": "ALL",
+                  "rows": 3,
+                  "filtered": 100
+                },
+                "block-nl-join": {
+                  "table": {
+                    "table_name": "t2",
+                    "access_type": "ALL",
+                    "rows": 4,
+                    "filtered": 100
+                  },
+                  "buffer_type": "flat",
+                  "buffer_size": "256Kb",
+                  "join_type": "BNL",
+                  "attached_condition": "t2.i = t1.i and t2.i = t1.i"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v1;
+DROP TABLE t1,t2,t3,t4;
+#
+# MDEV-13710: Optimization for equi-joins of grouping derived tables
+#             (Splitting derived tables / views with GROUP BY) :
+#             FROM list of the derived table contains constant tables
+#
+CREATE TABLE t1 (a int, INDEX(a)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (9),(5),(1);
+CREATE TABLE t2 (b int) ENGINE=MyISAM;
+CREATE TABLE t3 (c varchar(8), d int) ENGINE=MyISAM;
+INSERT INTO t3 VALUES ('foo',2),('bar',6);
+CREATE VIEW v1 AS SELECT a FROM t1, t2 GROUP BY a;
+SELECT * FROM t3
+WHERE d IN ( SELECT * FROM v1 ) AND c LIKE 'z%' OR c IS NULL;
+c	d
+DROP VIEW v1;
+DROP TABLE t1,t2,t3;
+#
+# MDEV-13734: Optimization for equi-joins of grouping derived tables
+#             (Splitting derived tables / views with GROUP BY) :
+#             derived table / view is empty
+#
+CREATE TABLE t1 (a int, b int, INDEX(a)) ENGINE=MyISAM;
+CREATE TABLE t2 (c int) ENGINE=MyISAM;
+CREATE VIEW v1 AS SELECT a, b FROM t1 STRAIGHT_JOIN t2;
+CREATE VIEW v2 AS SELECT a, max(b) as bmax FROM v1 GROUP BY a;
+CREATE VIEW v3 AS SELECT v2.* FROM t1 JOIN v2 ON t1.b = v2.bmax ;
+SELECT * FROM v3 JOIN t1 ON (bmax = b);
+a	bmax	a	b
+DROP VIEW v1,v2,v3;
+DROP TABLE t1,t2;
+#
+# MDEV-14845: Impossible where for derived with GROUP BY
+#
+CREATE TABLE t1 (pk INT PRIMARY KEY);
+INSERT INTO t1 VALUES (1),(2);
+WITH cte AS ( SELECT pk FROM t1 WHERE pk IS NULL GROUP BY pk )
+SELECT * FROM cte;
+pk
+EXPLAIN EXTENDED WITH cte AS ( SELECT pk FROM t1 WHERE pk IS NULL GROUP BY pk )
+SELECT * FROM cte;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	0.00	Const row not found
+2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
+Warnings:
+Note	1003	with cte as (/* select#2 */ select `test`.`t1`.`pk` AS `pk` from `test`.`t1` where 0 group by `test`.`t1`.`pk`)/* select#1 */ select NULL AS `pk` from `cte`
+DROP TABLE t1;
+#
+# MDEV-14880: assertion failure in optimizer when splitting is applied
+#
+CREATE TABLE t1 (pk1 INT PRIMARY KEY, f INT) ENGINE=Aria;
+INSERT INTO t1 VALUES (1,0),(2,0);
+CREATE TABLE t2 (pk2 INT PRIMARY KEY) ENGINE=Aria;
+INSERT INTO t2 VALUES (1),(2),(3);
+CREATE VIEW v2 AS SELECT pk2, COUNT(*) AS cnt FROM t2 GROUP BY pk2;
+SELECT * FROM t1 INNER JOIN v2 ON pk1 = pk2 WHERE f <> 5;
+pk1	f	pk2	cnt
+1	0	1	1
+2	0	2	1
+EXPLAIN EXTENDED SELECT * FROM t1 INNER JOIN v2 ON pk1 = pk2 WHERE f <> 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	PRIMARY	NULL	NULL	NULL	2	100.00	Using where
+1	PRIMARY	<derived2>	ref	key0	key0	4	test.t1.pk1	2	100.00	
+2	LATERAL DERIVED	t2	eq_ref	PRIMARY	PRIMARY	4	test.t1.pk1	1	100.00	Using index
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t1`.`pk1` AS `pk1`,`test`.`t1`.`f` AS `f`,`v2`.`pk2` AS `pk2`,`v2`.`cnt` AS `cnt` from `test`.`t1` join `test`.`v2` where `v2`.`pk2` = `test`.`t1`.`pk1` and `test`.`t1`.`f` <> 5
+EXPLAIN FORMAT=JSON SELECT * FROM t1 INNER JOIN v2 ON pk1 = pk2 WHERE f <> 5;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t1",
+      "access_type": "ALL",
+      "possible_keys": ["PRIMARY"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t1.f <> 5"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "4",
+      "used_key_parts": ["pk2"],
+      "ref": ["test.t1.pk1"],
+      "rows": 2,
+      "filtered": 100,
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "outer_ref_condition": "t1.pk1 is not null",
+          "table": {
+            "table_name": "t2",
+            "access_type": "eq_ref",
+            "possible_keys": ["PRIMARY"],
+            "key": "PRIMARY",
+            "key_length": "4",
+            "used_key_parts": ["pk2"],
+            "ref": ["test.t1.pk1"],
+            "rows": 1,
+            "filtered": 100,
+            "using_index": true
+          }
+        }
+      }
+    }
+  }
+}
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# MDEV-15017: splittable table is constant table
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+CREATE TABLE t2 (pk INT, b INT, PRIMARY KEY (pk)) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (1,2),(3,4);
+CREATE VIEW v2 AS SELECT pk, MIN(b) FROM t2 GROUP BY pk;
+SELECT * FROM t1 LEFT JOIN v2 ON (a = pk);
+a	pk	MIN(b)
+DROP VIEW v2;
+DROP TABLE t1,t2;
+#
+# MDEV-14994: splittable table with no rows
+#
+CREATE TABLE t1 (f INT PRIMARY KEY) ENGINE=MyISAM;
+CREATE VIEW v1 AS SELECT a.* FROM t1 AS a STRAIGHT_JOIN t1 AS b;
+CREATE VIEW v2 AS SELECT f FROM v1 GROUP BY f;
+SELECT * FROM v1 JOIN v2 ON v1.f = v2.f;
+f	f
+EXPLAIN EXTENDED
+SELECT * FROM v1 JOIN v2 ON v1.f = v2.f;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+3	LATERAL DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
+Warnings:
+Note	1003	/* select#1 */ select NULL AS `f`,`v2`.`f` AS `f` from `test`.`t1` `a` straight_join `test`.`t1` `b` join `test`.`v2` where 0
+DROP VIEW v1,v2;
+DROP TABLE t1;