From a7abddeffa6a760ce948c2dfb007cdf3f1a369d5 Mon Sep 17 00:00:00 2001 From: Michael Widenius Date: Fri, 9 Mar 2018 14:05:35 +0200 Subject: Create 'main' test directory and move 't' and 'r' there --- mysql-test/main/derived_cond_pushdown.result | 14947 +++++++++++++++++++++++++ 1 file changed, 14947 insertions(+) create mode 100644 mysql-test/main/derived_cond_pushdown.result (limited to 'mysql-test/main/derived_cond_pushdown.result') 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 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": "", + "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 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": "", + "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.a400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a 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", + "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_c300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or +((v1.max_c<135) and (v1.max_c300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or +((v1.max_c<135) and (v1.max_c 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", + "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 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": "", + "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.a25) and (t2.a25) and (t2.a 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", + "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.c7) and (t2.c7) and (t2.c 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", + "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.c5) and (t2.b7) and (t2.c5) and (t2.b7) and (t2.c5) and (t2.b 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.c5) and (t2.b", + "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_c4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or +((v1.a<2) and (v1.max_c4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or +((v1.a<2) and (v1.max_c 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", + "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 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": "", + "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 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": "", + "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 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": "", + "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.c7) and (v1.max_c>300) and (t2.c7) and (v1.max_c>300) and (t2.c 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", + "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 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": "", + "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 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": "", + "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.bv1.max_c) and (v1.max_c=t2.d)) or +((v1.a>4) and (v1.max_c<500) and (t2.bv1.max_c) and (v1.max_c=t2.d)) or +((v1.a>4) and (v1.max_c<500) and (t2.b 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", + "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.a400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a", + "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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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.b3) and (v1.max_c>200) and (t2.b3) and (v1.max_c>200) and (t2.b 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", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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.a900) and ((v1.a900) and ((v1.a 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 900" + }, + "block-nl-join": { + "table": { + "table_name": "", + "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 ref key1 key1 5 test.t2.a 2 +1 PRIMARY 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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": "", + "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": "", + "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 ref key1 key1 10 test.t2.a,test.t2.a 2 +1 PRIMARY 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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": "", + "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": "", + "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 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": "", + "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 ref key0 key0 5 test.t2.a 2 Using where +1 PRIMARY ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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": "", + "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": "", + "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": "", + "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 ref key1 key1 5 test.t2.b 2 Using where +1 PRIMARY 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY ref key0 key0 5 v1.a 2 Using where +1 PRIMARY 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": "", + "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": "", + "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": "", + "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 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": "", + "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 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": "", + "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 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 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 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": "", + "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": "", + "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": "", + "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.a400) or (v1.avg_c>270)) and (v1.a400) or (v1.avg_c>270)) and (v1.a 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 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 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", + "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": "", + "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": "", + "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 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 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 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": "", + "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": "", + "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": "", + "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.a200)) 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.a200)) 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.a200)) 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 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 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 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 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.a200)) 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": "", + "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": "", + "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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 ref key1 key1 5 test.t2.a 2 +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 ref key1 key1 5 test.t2.a 2 Using where +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join) +1 PRIMARY ref key0 key0 5 v4.a 2 Using where +4 DERIVED t1 ALL NULL NULL NULL NULL 20 Using temporary; Using filesort +2 DERIVED 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY ref key0 key0 5 v4.a 2 +4 DERIVED t1 ALL NULL NULL NULL NULL 20 Using where; Using temporary; Using filesort +2 DERIVED 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY ref key0 key0 5 v4.a 2 +4 DERIVED t1 ALL NULL NULL NULL NULL 20 Using where; Using temporary; Using filesort +2 DERIVED 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY ref key0 key0 5 v4.a 2 +4 DERIVED t1 ALL NULL NULL NULL NULL 20 Using where; Using temporary; Using filesort +2 DERIVED 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": "", + "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": "", + "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": "", + "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 ALL NULL NULL NULL NULL 20 Using where +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 ref key0 key0 5 test.t2.c 2 Using where +1 PRIMARY 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 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": "", + "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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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 ALL NULL NULL NULL NULL NULL +NULL UNION RESULT 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": "", + "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": "", + "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": "", + "access_type": "ALL", + "rows": 18, + "filtered": 100, + "attached_condition": "__3.a > 5 and __3.c > 200", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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 ALL NULL NULL NULL NULL NULL +NULL EXCEPT RESULT 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": "", + "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": "", + "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": "", + "access_type": "ALL", + "rows": 18, + "filtered": 100, + "attached_condition": "__3.a > 4 and __3.c < 130", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 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 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 ALL NULL NULL NULL NULL NULL +6 UNION t1 ALL NULL NULL NULL NULL 18 Using where; Using temporary; Using filesort +NULL UNIT RESULT 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": "", + "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": "", + "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": "", + "access_type": "ALL", + "rows": 18, + "filtered": 100, + "attached_condition": "__3.a > 4 and __3.c < 130", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 ref key0 key0 5 test.t2.a 2 Using where +2 DERIVED 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 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": "", + "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": "", + "access_type": "ALL", + "rows": 18, + "filtered": 100, + "attached_condition": "v1.a < 7 and v1.a > 4", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 ref key0 key0 5 test.t2.a 2 Using where +2 DERIVED 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 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": "", + "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": "", + "access_type": "ALL", + "rows": 18, + "filtered": 100, + "attached_condition": "v1.a < 7 and v1.a > 4", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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": "", + "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 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": "", + "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 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 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": "", + "access_type": "ALL", + "rows": 3, + "filtered": 100, + "attached_condition": "v1.a < 4", + "materialized": { + "query_block": { + "union_result": { + "table_name": "", + "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 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 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": "", + "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": "", + "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 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 (2,(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": "", + "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 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 (2,(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": "", + "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": "(1,exists(subquery#3))", + "table": { + "table_name": "t1", + "access_type": "system", + "rows": 1, + "filtered": 100 + }, + "subqueries": [ + { + "query_block": { + "select_id": 3, + "table": { + "table_name": "", + "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": "", + "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": "", + "access_type": "ALL", + "rows": 2, + "filtered": 100, + "attached_condition": "(v1.i <= 3)", + "materialized": { + "query_block": { + "select_id": 3, + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 2, + "filtered": 100, + "attached_condition": "(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": "(t1.b,(subquery#2)) or t1.b = 100" + }, + "subqueries": [ + { + "query_block": { + "select_id": 2, + "table": { + "table_name": "", + "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": "(t1.b,(subquery#3)) or t1.b = 100" + }, + "subqueries": [ + { + "query_block": { + "select_id": 3, + "table": { + "table_name": "", + "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": "", + "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": "", + "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": "", + "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": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 2, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 3, + "table": { + "message": "Select tables optimized away" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "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": "", + "access_type": "system", + "rows": 1, + "filtered": 100, + "materialized": { + "unique": 1, + "query_block": { + "select_id": 2, + "table": { + "message": "Impossible WHERE" + } + } + } + }, + "table": { + "table_name": "", + "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": "", + "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": "", + "access_type": "ALL", + "rows": 2, + "filtered": 100, + "attached_condition": "((1,(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": "", + "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": "", + "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": "", + "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": "", + "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": "", + "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": "", + "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": "", + "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": "", + "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 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": "", + "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 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": "", + "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": "", + "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 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": "", + "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 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": "", + "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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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": "", + "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 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 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": "", + "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": "", + "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 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 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": "", + "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; -- cgit v1.2.1