14 files changed, 314 insertions, 94 deletions
diff --git a/mysql-test/t/archive.test b/mysql-test/t/archive.test
index c89d31c69b9..ae8aa8d4f85 100644
--- a/mysql-test/t/archive.test
+++ b/mysql-test/t/archive.test
@@ -1330,12 +1330,14 @@ SELECT * FROM t2;
 #
 # For bug #12836
 # Delete was allowing all rows to be removed
+--error 1031
 DELETE FROM t2;
 SELECT * FROM t2;
 INSERT INTO t2 VALUES (2,011401,37,'breaking','dreaded','Steinberg','W');
 INSERT INTO t2 VALUES (3,011402,37,'Romans','scholastics','jarring','');
 INSERT INTO t2 VALUES (4,011403,37,'intercepted','audiology','tinily','');
 SELECT * FROM t2;
+--error 1031
 TRUNCATE TABLE t2;
 SELECT * FROM t2;
 
diff --git a/mysql-test/t/auto_increment.test b/mysql-test/t/auto_increment.test
index e0b024d021b..2674639d0ac 100644
--- a/mysql-test/t/auto_increment.test
+++ b/mysql-test/t/auto_increment.test
@@ -238,6 +238,23 @@ SHOW CREATE TABLE `t1`;
 
 DROP TABLE `t1`;
 
+#
+# Bug #6880: LAST_INSERT_ID() within a statement
+#
+
+create table t1(a int not null auto_increment primary key);              
+create table t2(a int not null auto_increment primary key, t1a int);     
+insert into t1 values(NULL);
+insert into t2 values (NULL, LAST_INSERT_ID()), (NULL, LAST_INSERT_ID());
+insert into t1 values (NULL);
+insert into t2 values (NULL, LAST_INSERT_ID()), (NULL, LAST_INSERT_ID()),
+(NULL, LAST_INSERT_ID());
+insert into t1 values (NULL);                                            
+insert into t2 values (NULL, LAST_INSERT_ID()), (NULL, LAST_INSERT_ID()),
+(NULL, LAST_INSERT_ID()), (NULL, LAST_INSERT_ID());
+select * from t2;
+drop table t1, t2;
+
 --echo End of 4.1 tests
 
 #
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index 5ca1f58d233..b58a2cf97d4 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -912,6 +912,32 @@ INSERT INTO t1 VALUES('uUABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbb
 check table t1;
 drop table t1;
 
+#
+# Bug#14896: Comparison with a key in a partial index over mb chararacter field
+#
+
+SET NAMES utf8;
+CREATE TABLE t1 (id int PRIMARY KEY,
+                 a varchar(16) collate utf8_unicode_ci NOT NULL default '',
+                 b int,
+                 f varchar(128) default 'XXX',
+                 INDEX (a(4))
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
+INSERT INTO t1(id, a, b) VALUES
+  (1, 'cccc', 50), (2, 'cccc', 70), (3, 'cccc', 30),
+  (4, 'cccc', 30), (5, 'cccc', 20), (6, 'bbbbbb', 40),
+  (7, 'dddd', 30), (8, 'aaaa', 10), (9, 'aaaa', 50),
+  (10, 'eeeee', 40), (11, 'bbbbbb', 60);
+
+SELECT id, a, b FROM t1;
+
+SELECT id, a, b FROM t1 WHERE a BETWEEN 'aaaa' AND 'bbbbbb';
+
+SELECT id, a FROM t1 WHERE a='bbbbbb';
+SELECT id, a FROM t1 WHERE a='bbbbbb' ORDER BY b;
+
+DROP TABLE t1;
+
 # End of 4.1 tests
 
 #
diff --git a/mysql-test/t/delayed.test b/mysql-test/t/delayed.test
index 5ae757b1fde..55e8f81f763 100644
--- a/mysql-test/t/delayed.test
+++ b/mysql-test/t/delayed.test
@@ -50,3 +50,52 @@ insert into t1 values (1);
 insert delayed into t1 values (1);
 select * from t1;
 drop table t1;
+
+#
+# Bug #20195: INSERT DELAYED with auto_increment is assigned wrong values
+#
+CREATE TABLE t1 ( a int(10) NOT NULL auto_increment, PRIMARY KEY (a));
+
+# Make one delayed insert to start the separate thread
+insert delayed into t1 values(null);
+
+# Do some normal inserts
+insert into t1 values(null);
+insert into t1 values(null);
+
+# Discarded, since the delayed-counter is 2, which is already used
+insert delayed into t1 values(null);
+
+# Discarded, since the delayed-counter is 3, which is already used
+insert delayed into t1 values(null);
+
+# Works, since the delayed-counter is 4, which is unused
+insert delayed into t1 values(null);
+
+# Do some more inserts
+insert into t1 values(null);
+insert into t1 values(null);
+insert into t1 values(null);
+
+# Delete one of the above to make a hole
+delete from t1 where a=6;
+
+# Discarded, since the delayed-counter is 5, which is already used
+insert delayed into t1 values(null);
+
+# Works, since the delayed-counter is 6, which is unused (the row we deleted)
+insert delayed into t1 values(null);
+
+# Discarded, since the delayed-counter is 7, which is already used
+insert delayed into t1 values(null);
+
+# Works, since the delayed-counter is 8, which is unused
+insert delayed into t1 values(null);
+
+# Check what we have now
+# must wait so that the delayed thread finishes
+# Note: this must be increased if the test fails
+--sleep 1
+select * from t1 order by a;
+
+DROP TABLE t1;
diff --git a/mysql-test/t/func_concat.test b/mysql-test/t/func_concat.test
index 37fc0e105b8..5487ad9c56b 100644
--- a/mysql-test/t/func_concat.test
+++ b/mysql-test/t/func_concat.test
@@ -52,4 +52,19 @@ select 'a' union select concat('a', -0.0);
 --replace_result a-0.0000 a0.0000
 select 'a' union select concat('a', -0.0000);
 
+#
+# Bug#16716: subselect in concat() may lead to a wrong result
+#
+select concat((select x from (select 'a' as x) as t1 ),
+  (select y from (select 'b' as y) as t2 )) from (select 1 union select 2 )
+  as t3;
+
 # End of 4.1 tests
+
+#
+# Bug#15962: CONCAT() in UNION may lead to a data trucation.
+#
+create table t1(f1 varchar(6)) charset=utf8;
+insert into t1 values ("123456");
+select concat(f1, 2) a from t1 union select 'x' a from t1;
+drop table t1;
diff --git a/mysql-test/t/func_group.test b/mysql-test/t/func_group.test
index fb9470c16dd..e8c5fa18a25 100644
--- a/mysql-test/t/func_group.test
+++ b/mysql-test/t/func_group.test
@@ -539,6 +539,34 @@ INSERT INTO t1 VALUES
 SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
 DROP TABLE t1;
 
+#
+# Bug #18206: min/max optimization cannot be applied to partial index
+#
+
+CREATE TABLE t1 (id int PRIMARY KEY, b char(3), INDEX(b));
+INSERT INTO t1 VALUES (1,'xx'), (2,'aa');
+SELECT * FROM t1;
+
+SELECT MAX(b) FROM t1 WHERE b < 'ppppp';
+SHOW WARNINGS;
+SELECT MAX(b) FROM t1 WHERE b < 'pp';
+DROP TABLE t1;
+
+CREATE TABLE t1 (id int PRIMARY KEY, b char(16), INDEX(b(4)));
+INSERT INTO t1 VALUES (1, 'xxxxbbbb'), (2, 'xxxxaaaa');
+SELECT MAX(b) FROM t1;
+EXPLAIN SELECT MAX(b) FROM t1;
+DROP TABLE t1;
+
+CREATE TABLE t1 (id int , b varchar(512), INDEX(b(250))) COLLATE latin1_bin;
+INSERT INTO t1 VALUES
+  (1,CONCAT(REPEAT('_', 250), "qq")), (1,CONCAT(REPEAT('_', 250), "zz")),
+  (1,CONCAT(REPEAT('_', 250), "aa")), (1,CONCAT(REPEAT('_', 250), "ff"));
+
+SELECT MAX(b) FROM t1;
+EXPLAIN SELECT MAX(b) FROM t1;
+DROP TABLE t1;
+
 # End of 4.1 tests
 
 #
diff --git a/mysql-test/t/func_in.test b/mysql-test/t/func_in.test
index 8ddf1fbe314..5a5e3ec798d 100644
--- a/mysql-test/t/func_in.test
+++ b/mysql-test/t/func_in.test
@@ -109,6 +109,18 @@ select count(*) from t1 where id not in (1);
 select count(*) from t1 where id not in (1,2);
 drop table t1;
 
+#
+# Bug#18360 Incorrect type coercion in IN() results in false comparison
+#
+create table t1 (f1 char(1), f2 int);
+insert into t1 values (1,0),('a',1),('z',2);
+select f1 from t1 where f1 in (1,'z');
+select f2 from t1 where f2 in (1,'z');
+select f1 from t1 where 'z' in (1,f1);
+select * from t1 where 'z' in (f2,f1);
+select * from t1 where 1 in (f2,f1);
+drop table t1;
+
 # End of 4.1 tests
 
 #
diff --git a/mysql-test/t/func_str.test b/mysql-test/t/func_str.test
index 7f809dbc4a1..b13fe039261 100644
--- a/mysql-test/t/func_str.test
+++ b/mysql-test/t/func_str.test
@@ -673,6 +673,18 @@ drop table t1;
 select load_file("lkjlkj");
 select ifnull(load_file("lkjlkj"),"it's null");
 
+#
+# Bug#15351: Wrong collation used for comparison of md5() and sha()
+# parameter can lead to a wrong result.
+#
+create table t1 (f1 varchar(4), f2 varchar(64), unique key k1 (f1,f2));
+insert into t1 values ( 'test',md5('test')), ('test', sha('test'));
+select * from t1 where f1='test' and (f2= md5("test") or f2= md5("TEST"));
+select * from t1 where f1='test' and (f2= md5("TEST") or f2= md5("test"));
+select * from t1 where f1='test' and (f2= sha("test") or f2= sha("TEST"));
+select * from t1 where f1='test' and (f2= sha("TEST") or f2= sha("test"));
+drop table t1;
+
 --echo End of 4.1 tests
 
 #
diff --git a/mysql-test/t/func_time.test b/mysql-test/t/func_time.test
index 6366d100bbc..976f7191a5f 100644
--- a/mysql-test/t/func_time.test
+++ b/mysql-test/t/func_time.test
@@ -368,6 +368,27 @@ select monthname(str_to_date(null, '%m')), monthname(str_to_date(null, '%m')),
        monthname(str_to_date(1, '%m')), monthname(str_to_date(0, '%m'));
 
 #
+# Bug#16377 result of DATE/TIME functions were compared as strings which
+#           can lead to a wrong result.
+#
+create table t1(f1 date, f2 time, f3 datetime);
+insert into t1 values ("2006-01-01", "12:01:01", "2006-01-01 12:01:01");
+insert into t1 values ("2006-01-02", "12:01:02", "2006-01-02 12:01:02");
+select f1 from t1 where f1 between "2006-1-1" and 20060101;
+select f1 from t1 where f1 between "2006-1-1" and "2006.1.1";
+select f1 from t1 where date(f1) between "2006-1-1" and "2006.1.1";
+select f2 from t1 where f2 between "12:1:2" and "12:2:2";
+select f2 from t1 where time(f2) between "12:1:2" and "12:2:2";
+select f3 from t1 where f3 between "2006-1-1 12:1:1" and "2006-1-1 12:1:2";
+select f3 from t1 where timestamp(f3) between "2006-1-1 12:1:1" and "2006-1-1 12:1:2";
+select f1 from t1 where "2006-1-1" between f1 and f3;
+select f1 from t1 where "2006-1-1" between date(f1) and date(f3);
+select f1 from t1 where "2006-1-1" between f1 and 'zzz';
+select f1 from t1 where makedate(2006,1) between date(f1) and date(f3);
+select f1 from t1 where makedate(2006,2) between date(f1) and date(f3);
+drop table t1;
+
+#
 # Bug #16546
 # 
 
diff --git a/mysql-test/t/join.test b/mysql-test/t/join.test
index f6a57d5e230..27558a31d68 100644
--- a/mysql-test/t/join.test
+++ b/mysql-test/t/join.test
@@ -563,4 +563,29 @@ select a2 from ((t1 natural join t2) join t3 on b=c1) natural join t4;
 
 drop table t1,t2,t3,t4;
 
+#
+# BUG#15355: Common natural join column not resolved in prepared statement nested query
+#
+create table t1 (c int, b int);
+create table t2 (a int, b int);
+create table t3 (b int, c int);
+create table t4 (y int, c int);
+create table t5 (y int, z int);
+
+insert into t1 values (3,2);
+insert into t2 values (1,2);
+insert into t3 values (2,3);
+insert into t4 values (1,3);
+insert into t5 values (1,4);
+
+-- this fails
+prepare stmt1 from "select * from ((t3 natural join (t1 natural join t2))
+natural join t4) natural join t5";
+execute stmt1;
+
+-- this works
+select * from ((t3 natural join (t1 natural join t2)) natural join t4)
+  natural join t5;
+drop table t1, t2, t3, t4, t5;
+
 # End of tests for WL#2486 - natural/using join
diff --git a/mysql-test/t/multi_update.test b/mysql-test/t/multi_update.test
index 04c33e9d709..21271517564 100644
--- a/mysql-test/t/multi_update.test
+++ b/mysql-test/t/multi_update.test
@@ -452,6 +452,14 @@ insert into t2 values(1,null);
 delete t2, t1 from t2 left join t1 on (t2.aclid=t1.aclid) where t2.refid='1';
 drop table t1, t2;
 
+#
+# Bug#19225: unchecked error leads to server crash
+#
+create table t1(a int);
+create table t2(a int);
+--error 1093
+delete from t1,t2 using t1,t2 where t1.a=(select a from t1);
+drop table t1, t2;
 # End of 4.1 tests
 
 #
diff --git a/mysql-test/t/replace.test b/mysql-test/t/replace.test
index 10703eaafb8..269854fb180 100644
--- a/mysql-test/t/replace.test
+++ b/mysql-test/t/replace.test
@@ -35,3 +35,13 @@ select * from t1;
 drop table t1;
 
 # End of 4.1 tests
+
+#
+# Bug#19789: REPLACE was allowed for a VIEW with CHECK OPTION enabled.
+#
+CREATE TABLE t1 (f1 INT);
+CREATE VIEW v1 AS SELECT f1 FROM t1 WHERE f1 = 0 WITH CHECK OPTION;
+--error 1369
+REPLACE INTO v1 (f1) VALUES (1);
+DROP TABLE t1;
+DROP VIEW v1;
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 8cd15463c62..ae3981ce47b 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -2217,15 +2217,6 @@ show table status like 't1%';
 select 123 as a from t1 where f1 is null;
 drop table t1,t11;
 
-# Bug 7672 Unknown column error in order clause
-#
-CREATE TABLE t1 (a INT, b INT);
-(SELECT a, b AS c FROM t1) ORDER BY c+1;
-(SELECT a, b AS c FROM t1) ORDER BY b+1;
-SELECT a, b AS c FROM t1 ORDER BY c+1;
-SELECT a, b AS c FROM t1 ORDER BY b+1;
-drop table t1;
-
 #
 # Bug #3874 (function in GROUP and LEFT JOIN)
 #
@@ -2265,6 +2256,21 @@ select * from t1 where f1 in (select f3 from t2 where (f3,f4)= (select f3,f4 fro
 drop table t1,t2;
 
 #
+# Bug #4981: 4.x and 5.x produce non-optimal execution path, 3.23 regression test failure
+#
+CREATE TABLE t1(a int, b int, c int, KEY b(b), KEY c(c));
+insert into t1 values (1,0,0),(2,0,0);
+CREATE TABLE t2 (a int, b varchar(2), c varchar(2), PRIMARY KEY(a));
+insert into t2 values (1,'',''), (2,'','');
+CREATE TABLE t3 (a int, b int, PRIMARY KEY (a,b), KEY a (a), KEY b (b));
+insert into t3 values (1,1),(1,2);
+# must have "range checked" for t2
+explain select straight_join DISTINCT t2.a,t2.b, t1.c from t1, t3, t2 
+ where (t1.c=t2.a or (t1.c=t3.a and t2.a=t3.b)) and t1.b=556476786 and 
+       t2.b like '%%' order by t2.b limit 0,1;
+DROP TABLE t1,t2,t3;
+
+#
 # Bug #17873: confusing error message when IGNORE INDEX refers a column name
 #
 
@@ -2282,48 +2288,6 @@ DROP TABLE t1;
 # End of 4.1 tests
 
 #
-# Test case for bug 7098: substitution of a constant for a string field 
-#
-
-CREATE TABLE t1 ( city char(30) );
-INSERT INTO t1 VALUES ('London');
-INSERT INTO t1 VALUES ('Paris');
-
-SELECT * FROM t1 WHERE city='London';
-SELECT * FROM t1 WHERE city='london';
-EXPLAIN SELECT * FROM t1 WHERE city='London' AND city='london';
-SELECT * FROM t1 WHERE city='London' AND city='london';
-EXPLAIN SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
-SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
-
-DROP TABLE t1;
-
-#
-# Bug#7425 inconsistent sort order on unsigned columns result of substraction
-#
-
-create table t1 (a int(11) unsigned, b int(11) unsigned);
-insert into t1 values (1,0), (1,1), (1,2);
-select a-b  from t1 order by 1;
-select a-b , (a-b < 0)  from t1 order by 1;
-select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;
-select cast((a - b) as unsigned) from t1 order by 1;
-drop table t1;
-
-
-#
-# Bug#8733 server accepts malformed query (multiply mentioned distinct)
-#
-create table t1 (a int(11));
-select all all * from t1;
-select distinct distinct * from t1;
---error 1221
-select all distinct * from t1;
---error 1221
-select distinct all * from t1;
-drop table t1;
-
-#
 # Test for bug #6474
 #
 
@@ -2358,21 +2322,6 @@ SELECT K2C4, K4N4, F2I4 FROM t1
 DROP TABLE t1;
 
 #
-# Test case for bug 7520: a wrong cost of the index for a BLOB field
-#
-
-CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
-CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
-
-INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
-INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
-
-EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
-EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
-
-DROP TABLE t1, t2;
-
-#
 # Bug#8670
 #
 create table t1 (a int, b int);
@@ -2411,34 +2360,6 @@ drop table t1;
 
 
 #
-# Bug#8733 server accepts malformed query (multiply mentioned distinct)
-#
-create table t1 (a int(11));
-select all all * from t1;
-select distinct distinct * from t1;
---error 1221
-select all distinct * from t1;
---error 1221
-select distinct all * from t1;
-drop table t1;
-
-
-#
-# Test case for bug 7520: a wrong cost of the index for a BLOB field
-#
-
-CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
-CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
-
-INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
-INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
-
-EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
-EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
-
-DROP TABLE t1, t2;
-
-#
 # Test for bug #10084: STRAIGHT_JOIN with ON expression 
 #
 
@@ -2935,3 +2856,29 @@ EXPLAIN
 SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0;
 
 DROP TABLE t1, t2;
+
+#
+# Bug #18895: BIT values cause joins to fail
+#
+create table t1 (
+    a int unsigned    not null auto_increment primary key,
+    b bit             not null,
+    c bit             not null
+);
+
+create table t2 (
+    a int unsigned    not null auto_increment primary key,
+    b bit             not null,
+    c int unsigned    not null,
+    d varchar(50)
+);
+
+insert into t1 (b,c) values (0,1), (0,1);
+insert into t2 (b,c) values (0,1);
+
+-- Row 1 should succeed.  Row 2 should fail.  Both fail.
+select t1.a, t1.b + 0, t1.c + 0, t2.a, t2.b + 0, t2.c, t2.d
+from t1 left outer join t2 on t1.a = t2.c and t2.b <> 1
+where t1.b <> 1 order by t1.a;
+
+drop table t1,t2;
diff --git a/mysql-test/t/union.test b/mysql-test/t/union.test
index 692f1f509fa..7dfe4ac482f 100644
--- a/mysql-test/t/union.test
+++ b/mysql-test/t/union.test
@@ -793,3 +793,51 @@ select id from t1 union all select 99 order by 1;
 drop table t1;
 
 # End of 4.1 tests
+
+#
+# Bug#18175: Union select over 129 tables with a sum function fails.
+#
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1)) union
+(select avg(1)) union (select avg(1)) union (select avg(1));
+