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-rw-r--r--mysql-test/r/func_group.result4
-rw-r--r--mysql-test/r/join_outer_innodb.result292
-rw-r--r--mysql-test/r/ps_11bugs.result2
-rw-r--r--mysql-test/r/subselect.result8
-rw-r--r--mysql-test/r/subselect4.result24
-rw-r--r--mysql-test/r/subselect_exists_to_in.result8
-rw-r--r--mysql-test/r/subselect_innodb.result2
-rw-r--r--mysql-test/r/subselect_no_mat.result10
-rw-r--r--mysql-test/r/subselect_no_opts.result8
-rw-r--r--mysql-test/r/subselect_no_scache.result8
-rw-r--r--mysql-test/r/subselect_no_semijoin.result8
-rw-r--r--mysql-test/r/sum_distinct-big.result58
12 files changed, 397 insertions, 35 deletions
diff --git a/mysql-test/r/func_group.result b/mysql-test/r/func_group.result
index 55afba245bd..c6fa040246a 100644
--- a/mysql-test/r/func_group.result
+++ b/mysql-test/r/func_group.result
@@ -1837,10 +1837,10 @@ INSERT INTO t2 VALUES
EXPLAIN EXTENDED
SELECT MAX(a) FROM t1 WHERE (1,2) IN (SELECT 3,4) AND a<10;
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 range a a 4 NULL 4 100.00 Using where; Using index
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
-Note 1003 select max(`test`.`t1`.`a`) AS `MAX(a)` from `test`.`t1` where (<cache>(<in_optimizer>((1,2),<exists>(select 3,4 having (((1 = 3) or isnull(3)) and ((2 = 4) or isnull(4)) and <is_not_null_test>(3) and <is_not_null_test>(4))))) and (`test`.`t1`.`a` < 10))
+Note 1003 select max(`test`.`t1`.`a`) AS `MAX(a)` from `test`.`t1` where 0
SELECT MAX(a) FROM t1 WHERE (1,2) IN (SELECT 3,4) AND a<10;
MAX(a)
NULL
diff --git a/mysql-test/r/join_outer_innodb.result b/mysql-test/r/join_outer_innodb.result
index 650946d8b06..0184e236d14 100644
--- a/mysql-test/r/join_outer_innodb.result
+++ b/mysql-test/r/join_outer_innodb.result
@@ -183,6 +183,296 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using join buffer (incremental, BNL join)
1 SIMPLE t5 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
-1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t6b ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
+1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
drop table t1,t2,t3,t4,t5,t6;
+#
+Bug mdev-4318: view over a complex query with outer joins
+#
+CREATE TABLE t1 (
+a1 int NOT NULL, a2 int NOT NULL, a3 int DEFAULT NULL, a4 tinyint NOT NULL,
+a5 int NOT NULL, a6 tinyint NOT NULL, a7 tinyint(4) DEFAULT NULL,
+a8 smallint(6) DEFAULT NULL, a9 smallint(6) DEFAULT NULL, a10 tinyint NOT NULL,
+PRIMARY KEY (a1), KEY a2 (a2), KEY a3 (a3), KEY a4 (a4), KEY a6 (a6),
+KEY a5 (a5), KEY a7 (a7), KEY a8 (a8), KEY a9 (a9)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t1 VALUES
+(3360,5684,2219,1,316832,1,0,NULL,NULL,NULL),
+(3362,2754,597,2,316844,1,0,NULL,NULL,NULL),
+(3363,369,NULL,1,317295,1,0,NULL,NULL,NULL);
+Warnings:
+Warning 1048 Column 'a10' cannot be null
+Warning 1048 Column 'a10' cannot be null
+Warning 1048 Column 'a10' cannot be null
+CREATE TABLE t2 (
+b1 int NOT NULL, b2 int NOT NULL, PRIMARY KEY (b1,b2), KEY b2 (b2)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+CREATE TABLE t3 (
+c1 int NOT NULL, PRIMARY KEY (c1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t3 VALUES
+(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),
+(1000),(1001),(1002),(1003),(9999);
+CREATE TABLE t4 (
+d1 int NOT NULL, PRIMARY KEY (d1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t4 VALUES (5674),(5676),(5680),(5684),(5685);
+CREATE TABLE t5 (
+e1 int NOT NULL, e2 varchar(64) NOT NULL, PRIMARY KEY (e1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t5 VALUES
+(5684,'51a5de7a9f56314e082094d78f58be082c3cf0c1'),
+(5685,'754dc8292cb9f5eb9ade126fe7e961c62412a349'),
+(5686,'75eeb33f1c819bac21f6d023b4c5b24185eeda5c');
+CREATE TABLE t6 (
+f1 int NOT NULL, PRIMARY KEY (f1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t6 VALUES (5542),(5620),(5686);
+CREATE TABLE t7 (
+g1 tinyint NOT NULL DEFAULT '0', g2 varchar(20) NOT NULL, PRIMARY KEY (g1)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1;
+INSERT INTO t7 VALUES
+(1,'60feec2b20ed19f55ad0'),(3,'9ddb18bff7fcbd1e3133'),
+(5,'a05599df9222bb160d11'),(7,'e31bae372f7d01df0589'),
+(9,'8f8372dd7fc8eb46c8a3'),(11,'f8d0e28529e990a09309');
+CREATE TABLE t8 (
+h1 tinyint NOT NULL, h2 varchar(128) DEFAULT NULL, PRIMARY KEY (h1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t8 VALUES (1,'b'),(2,'c'),(3,'d'),(4,'e');
+CREATE TABLE t9 (
+i1 tinyint NOT NULL, i2 varchar(7) NOT NULL, i3 varchar(128) NOT NULL,
+PRIMARY KEY (i1,i2), KEY i2 (i2), KEY i3 (i3)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t9 VALUES
+(2,'a','07630d223c7e5f7b1feb19b3caafb0833fd028eb'),
+(3,'b','1ca53dcc50b68af86f4b1b4676dbed917b543c30'),
+(1,'b','2c01ac36c1ce9a7de66be89f85d8aa5f0052e2e8'),
+(4,'a','496c486b3a9edc439477fef7d34cbefdebba86df'),
+(3,'a','98bf72d8d467201058a5f69bd7709bfc74a8637e'),
+(2,'b','9a45425f6160fb59d7f8a02c721498d4ce945302'),
+(4,'b','9c9a7300f3e708f8e430f9f3376d966f5951f583'),
+(1,'a','c0af3f076b905f31cbb51af304b9c7ad539e0861');
+CREATE TABLE t10 (
+j1 tinyint NOT NULL, j2 varchar(20) NOT NULL, PRIMARY KEY (j1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t10 VALUES (1,'b'),(2,'c'),(3,'d');
+CREATE TABLE t11 (
+k1 int NOT NULL, k2 datetime DEFAULT NULL, k3 int DEFAULT NULL,
+k4 int DEFAULT NULL, PRIMARY KEY (k1), KEY k3 (k3), KEY k4 (k4)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t11 VALUES
+(317422,'2013-03-18 11:43:03',1,NULL),(317423,'2013-03-18 11:43:11',1,NULL),
+(317424,'2013-03-18 11:52:01',1,1),(317425,'2013-03-18 11:52:01',1,1),
+(317426,'2013-03-18 11:56:38',1,1),(317427,'2013-03-18 12:18:25',1,NULL),
+(317428,'2013-03-18 12:46:28',1,NULL),(317429,'2013-03-18 12:46:28',1,NULL),
+(317430,'2013-03-18 12:46:28',1,NULL),(317431,'2013-03-18 12:46:28',1,NULL),
+(317432,'2013-03-18 12:46:28',1,NULL),(317433,'2013-03-18 12:46:28',1,NULL),
+(317434,'2013-03-18 12:46:28',1,NULL),(317435,'2013-03-18 12:46:28',1,NULL),
+(317436,'2013-03-18 12:46:28',1,NULL),(317437,'2013-03-18 12:46:28',1,NULL),
+(317438,'2013-03-18 12:46:28',1,NULL),(317439,'2013-03-18 12:46:28',1,NULL),
+(317440,'2013-03-18 12:55:20',1,NULL),(317441,'2013-03-18 12:58:29',1,NULL),
+(317442,'2013-03-18 13:06:02',1,NULL),(317443,'2013-03-18 15:23:18',21,NULL);
+CREATE TABLE t12 (
+l1 int NOT NULL, l2 varchar(64) NOT NULL, PRIMARY KEY (l1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t12 VALUES
+(552,'59a498252ef59f96fbdc13a414abe244d8e8bc30'),
+(554,'c6025c7cb2d9dfb1be7ce4a61f35b45bb9e61ba3'),
+(555,'b245bcc672082bb6d10794b2b4ac972dd14b1cf5');
+CREATE TABLE t13 (
+m1 int NOT NULL, m2 int NOT NULL, m3 int NOT NULL,
+PRIMARY KEY (m1,m2,m3), KEY m3 (m3), KEY m2 (m2)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t13 VALUES (3324,43,4),(3332,263,1),(3348,27,3);
+CREATE TABLE t14 (
+n1 smallint NOT NULL, n2 varchar(64) NOT NULL, PRIMARY KEY (n1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t14 VALUES
+(21,'685bf7ca576af964c7cff564d5e4473b81499b8b'),
+(23,'b8e42dab1ab952406b3accfb47089c61478138a8'),
+(25,'3fea441e411db8c70bf039b50c8f18f59515be53'),
+(27,'998aecc30fd0e0b8a1cac6590e5eccc2d7822223');
+CREATE TABLE t15 (
+o1 smallint NOT NULL, PRIMARY KEY (o1)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t15 VALUES (1),(3);
+CREATE TABLE t16 (
+p1 smallint NOT NULL, p2 varchar(7) NOT NULL, p3 varchar(64) NOT NULL,
+PRIMARY KEY (p1,p2)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+INSERT INTO t16 VALUES
+(1,'a','66bdbb389456f3ae97206da115a7b397c31400e8'),
+(1,'b','66bdbb389456f3ae97206da115a7b397c31400e8'),
+(3,'a','386c10e454278c6e27feb16258089166422f79b4'),
+(3,'b','386c10e454278c6e27feb16258089166422f79b4');
+create view v1 as select t3.c1,t5.e2,t1.a1,t14.n2,t16.p3,t10.j2,t7.g2,t11.k2,l3.l2,
+t9.i3,t12.l2 AS l_l2,l2.l2 AS l2_l2,l4.l1 AS l4_l1,t6.f1
+from
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+t1
+left join t2 on t1.a1 = t2.b1
+)
+left join t3 on t2.b2 = t3.c1
+)
+left join t4 on t1.a2 = t4.d1
+)
+left join t5 on t4.d1 = t5.e1
+)
+left join t6 on t1.a3 = t6.f1
+)
+left join t5 e2 on t6.f1 = e2.e1
+)
+join t7 on t1.a7 = t7.g1
+)
+join t8 on t1.a4 = t8.h1
+)
+join t9 on t8.h1 = t9.i1
+)
+join t10 on t1.a6 = t10.j1
+)
+join t11 on t1.a5 = t11.k1
+)
+left join t12 on t11.k3 = t12.l1
+)
+left join t12 l2 on t11.k4 = l2.l1
+)
+left join t13 on t1.a1 = t13.m1 and t13.m3 = 4
+)
+left join t12 l4 on l4.l1 = t13.m2
+)
+left join t13 m2 on t1.a1 = m2.m1 and m2.m3 = 3
+)
+left join t12 l3 on l3.l1 = m2.m2
+)
+left join t14 on t1.a8 = t14.n1
+)
+left join t15 on t1.a9 = t15.o1
+)
+left join t16 on t15.o1 = t16.p1
+where t1.a10 = 1;
+explain select t3.c1,t5.e2,t1.a1,t14.n2,t16.p3,t10.j2,t7.g2,t11.k2,l3.l2,
+t9.i3,t12.l2 AS l_l2,l2.l2 AS l2_l2,l4.l1 AS l4_l1,t6.f1
+from
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+(
+t1
+left join t2 on t1.a1 = t2.b1
+)
+left join t3 on t2.b2 = t3.c1
+)
+left join t4 on t1.a2 = t4.d1
+)
+left join t5 on t4.d1 = t5.e1
+)
+left join t6 on t1.a3 = t6.f1
+)
+left join t5 e2 on t6.f1 = e2.e1
+)
+join t7 on t1.a7 = t7.g1
+)
+join t8 on t1.a4 = t8.h1
+)
+join t9 on t8.h1 = t9.i1
+)
+join t10 on t1.a6 = t10.j1
+)
+join t11 on t1.a5 = t11.k1
+)
+left join t12 on t11.k3 = t12.l1
+)
+left join t12 l2 on t11.k4 = l2.l1
+)
+left join t13 on t1.a1 = t13.m1 and t13.m3 = 4
+)
+left join t12 l4 on l4.l1 = t13.m2
+)
+left join t13 m2 on t1.a1 = m2.m1 and m2.m3 = 3
+)
+left join t12 l3 on l3.l1 = m2.m2
+)
+left join t14 on t1.a8 = t14.n1
+)
+left join t15 on t1.a9 = t15.o1
+)
+left join t16 on t15.o1 = t16.p1
+where t1.a10 = 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL a4,a6,a5,a7 NULL NULL NULL 3 Using where
+1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.b2 1 Using where; Using index
+1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 test.t1.a2 1 Using index
+1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.d1 1 Using where
+1 SIMPLE t6 eq_ref PRIMARY PRIMARY 4 test.t1.a3 1 Using where; Using index
+1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
+1 SIMPLE t7 eq_ref PRIMARY PRIMARY 1 test.t1.a7 1
+1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
+1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t1.a5 1
+1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where
+1 SIMPLE l2 eq_ref PRIMARY PRIMARY 4 test.t11.k4 1 Using where
+1 SIMPLE t13 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where; Using index
+1 SIMPLE l4 eq_ref PRIMARY PRIMARY 4 test.t13.m2 1 Using where; Using index
+1 SIMPLE m2 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where; Using index
+1 SIMPLE l3 eq_ref PRIMARY PRIMARY 4 test.m2.m2 1 Using where
+1 SIMPLE t14 eq_ref PRIMARY PRIMARY 2 test.t1.a8 1 Using where
+1 SIMPLE t15 eq_ref PRIMARY PRIMARY 2 test.t1.a9 1 Using where; Using index
+1 SIMPLE t16 ref PRIMARY PRIMARY 2 test.t15.o1 1 Using where
+1 SIMPLE t10 ALL PRIMARY NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
+explain select * from v1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 SIMPLE t1 ALL a4,a6,a5,a7 NULL NULL NULL 3 Using where
+1 SIMPLE t2 ref PRIMARY PRIMARY 4 test.t1.a1 1 Using index
+1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.b2 1 Using where; Using index
+1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 test.t1.a2 1 Using index
+1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.d1 1 Using where
+1 SIMPLE t6 eq_ref PRIMARY PRIMARY 4 test.t1.a3 1 Using where; Using index
+1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
+1 SIMPLE t7 eq_ref PRIMARY PRIMARY 1 test.t1.a7 1
+1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
+1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t1.a5 1
+1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where
+1 SIMPLE l2 eq_ref PRIMARY PRIMARY 4 test.t11.k4 1 Using where
+1 SIMPLE t13 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where; Using index
+1 SIMPLE l4 eq_ref PRIMARY PRIMARY 4 test.t13.m2 1 Using where; Using index
+1 SIMPLE m2 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where; Using index
+1 SIMPLE l3 eq_ref PRIMARY PRIMARY 4 test.m2.m2 1 Using where
+1 SIMPLE t14 eq_ref PRIMARY PRIMARY 2 test.t1.a8 1 Using where
+1 SIMPLE t15 eq_ref PRIMARY PRIMARY 2 test.t1.a9 1 Using where; Using index
+1 SIMPLE t16 ref PRIMARY PRIMARY 2 test.t15.o1 1 Using where
+1 SIMPLE t10 ALL PRIMARY NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join)
+drop view v1;
+drop table t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16;
diff --git a/mysql-test/r/ps_11bugs.result b/mysql-test/r/ps_11bugs.result
index 56894302505..3bc7039583b 100644
--- a/mysql-test/r/ps_11bugs.result
+++ b/mysql-test/r/ps_11bugs.result
@@ -120,7 +120,7 @@ create table t1 (a int primary key);
insert into t1 values (1);
explain select * from t1 where 3 in (select (1+1) union select 1);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 system NULL NULL NULL NULL 1
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result
index 96a20a3ea27..b3536661125 100644
--- a/mysql-test/r/subselect.result
+++ b/mysql-test/r/subselect.result
@@ -429,7 +429,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -558,10 +558,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1371,7 +1371,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result
index 0d5209d0ec2..ff768886434 100644
--- a/mysql-test/r/subselect4.result
+++ b/mysql-test/r/subselect4.result
@@ -869,7 +869,7 @@ NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
f1 f2
@@ -960,7 +960,7 @@ NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2);
f1 f2
@@ -1055,7 +1055,7 @@ NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
f1 f2
@@ -1146,7 +1146,7 @@ NULL
EXPLAIN
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10);
f1 f2
@@ -2012,7 +2012,7 @@ FROM t2 JOIN t3 ON t3.f4 = t2.f4
WHERE t3.f1 = 8
GROUP BY 1, 2;
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t3 system NULL NULL NULL NULL 1 Using temporary; Using filesort
+1 PRIMARY t3 system NULL NULL NULL NULL 1 Using filesort
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
@@ -2325,5 +2325,19 @@ ORDER BY alias1.b;
pk b pk b
1 1 1 1
drop table t1, t2, t3;
+#
+# MDEV-4144 simple subquery causes full scan instead of range scan
+#
+CREATE TABLE t1 (id int not null auto_increment, x int not null, primary key(id));
+INSERT INTO t1 (x) VALUES (0),(0),(0);
+EXPLAIN
+SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1;
+id select_type table type possible_keys key key_len ref rows Extra
+1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using filesort
+2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
+SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1;
+x
+0
+drop table t1;
SET optimizer_switch= @@global.optimizer_switch;
set @@tmp_table_size= @@global.tmp_table_size;
diff --git a/mysql-test/r/subselect_exists_to_in.result b/mysql-test/r/subselect_exists_to_in.result
index b639fc7eca0..579277f11f9 100644
--- a/mysql-test/r/subselect_exists_to_in.result
+++ b/mysql-test/r/subselect_exists_to_in.result
@@ -433,7 +433,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -562,10 +562,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1375,7 +1375,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
diff --git a/mysql-test/r/subselect_innodb.result b/mysql-test/r/subselect_innodb.result
index 8932acf8ffd..0b339738432 100644
--- a/mysql-test/r/subselect_innodb.result
+++ b/mysql-test/r/subselect_innodb.result
@@ -372,7 +372,7 @@ SELECT SUM( c )
FROM t2
WHERE (SELECT DISTINCT b FROM t3) > 0);
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 Using where; Using index
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 SUBQUERY t3 ALL NULL NULL NULL NULL 1 Using temporary
SELECT *
diff --git a/mysql-test/r/subselect_no_mat.result b/mysql-test/r/subselect_no_mat.result
index 8a5016d47ee..ce9a4ad444f 100644
--- a/mysql-test/r/subselect_no_mat.result
+++ b/mysql-test/r/subselect_no_mat.result
@@ -436,7 +436,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -565,10 +565,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1378,7 +1378,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
@@ -6913,7 +6913,7 @@ INSERT INTO t2 VALUES (1),(2);
EXPLAIN
SELECT * FROM t1 WHERE 4 IN (SELECT MAX(b) FROM t2 WHERE EXISTS (SELECT * FROM t1));
id select_type table type possible_keys key key_len ref rows Extra
-1 PRIMARY t1 ALL NULL NULL NULL NULL 2
+1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
3 SUBQUERY t1 ALL NULL NULL NULL NULL 2
SELECT * FROM t1 WHERE 4 IN (SELECT MAX(b) FROM t2 WHERE EXISTS (SELECT * FROM t1));
diff --git a/mysql-test/r/subselect_no_opts.result b/mysql-test/r/subselect_no_opts.result
index 13467916039..e017e67cfe6 100644
--- a/mysql-test/r/subselect_no_opts.result
+++ b/mysql-test/r/subselect_no_opts.result
@@ -432,7 +432,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -561,10 +561,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1374,7 +1374,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
diff --git a/mysql-test/r/subselect_no_scache.result b/mysql-test/r/subselect_no_scache.result
index b53405ad8bd..492321c5d81 100644
--- a/mysql-test/r/subselect_no_scache.result
+++ b/mysql-test/r/subselect_no_scache.result
@@ -435,7 +435,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -564,10 +564,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1377,7 +1377,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
diff --git a/mysql-test/r/subselect_no_semijoin.result b/mysql-test/r/subselect_no_semijoin.result
index 34cdb17e23e..eb92936e85d 100644
--- a/mysql-test/r/subselect_no_semijoin.result
+++ b/mysql-test/r/subselect_no_semijoin.result
@@ -432,7 +432,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
-Note 1003 select 1 AS `1` from `test`.`t1` where (1 = (select 1 union select 1))
+Note 1003 select 1 AS `1` from `test`.`t1` where 1
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@@ -561,10 +561,10 @@ Warnings:
Note 1003 select max(`test`.`t1`.`numreponse`) AS `MAX(numreponse)` from `test`.`t1` where (`test`.`t1`.`numeropost` = '1')
EXPLAIN EXTENDED SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using where; Using index
+1 PRIMARY t1 const PRIMARY,numreponse PRIMARY 7 const,const 1 100.00 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
-Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = '1') and (`test`.`t1`.`numreponse` = (select max(`test`.`t1`.`numreponse`) from `test`.`t1` where (`test`.`t1`.`numeropost` = '1'))))
+Note 1003 select 3 AS `numreponse` from `test`.`t1` where ((1 = '1'))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
@@ -1374,7 +1374,7 @@ create table t1 (id int not null auto_increment primary key, salary int, key(sal
insert into t1 (salary) values (100),(1000),(10000),(10),(500),(5000),(50000);
explain extended SELECT id FROM t1 where salary = (SELECT MAX(salary) FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
-1 PRIMARY t1 ref salary salary 5 const 0 0.00 Using where
+1 PRIMARY t1 ref salary salary 5 const 1 100.00 Using where
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) from `test`.`t1`))
diff --git a/mysql-test/r/sum_distinct-big.result b/mysql-test/r/sum_distinct-big.result
index d4933b31f80..2d350826ac8 100644
--- a/mysql-test/r/sum_distinct-big.result
+++ b/mysql-test/r/sum_distinct-big.result
@@ -1,4 +1,8 @@
DROP TABLE IF EXISTS t1, t2;
+set @save_tmp_table_size=@@tmp_table_size;
+set @save_max_heap_table_size=@@max_heap_table_size;
+set @save_storage_engine=@@storage_engine;
+set storage_engine=MYISAM;
CREATE TABLE t1 (id INTEGER);
CREATE TABLE t2 (id INTEGER);
INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
@@ -120,3 +124,57 @@ sm
536887296
DROP TABLE t1;
DROP TABLE t2;
+SET @@tmp_table_size=@save_tmp_table_size;
+SET @@max_heap_table_size=@save_max_heap_table_size;
+#
+# Bug mdev-4311: COUNT(DISTINCT...) requiring a file for Unique
+# (bug #68749)
+#
+set @save_storage_engine=@@storage_engine;
+set storage_engine=INNODB;
+CREATE TABLE t1 (id INTEGER) ENGINE=InnoDB;
+CREATE TABLE t2 (id INTEGER) ENGINE=InnoDB;
+INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
+INSERT INTO t1 (id) SELECT id FROM t1;
+INSERT INTO t1 (id) SELECT id FROM t1;
+INSERT INTO t1 (id) SELECT id FROM t1;
+INSERT INTO t1 (id) SELECT id FROM t1;
+INSERT INTO t1 (id) SELECT id FROM t1;
+INSERT INTO t1 SELECT id+1 FROM t1;
+INSERT INTO t1 SELECT id+2 FROM t1;
+INSERT INTO t1 SELECT id+4 FROM t1;
+INSERT INTO t1 SELECT id+8 FROM t1;
+INSERT INTO t1 SELECT id+16 FROM t1;
+INSERT INTO t1 SELECT id+32 FROM t1;
+INSERT INTO t1 SELECT id+64 FROM t1;
+INSERT INTO t1 SELECT id+128 FROM t1;
+INSERT INTO t1 SELECT id+256 FROM t1;
+INSERT INTO t1 SELECT id+512 FROM t1;
+INSERT INTO t1 SELECT id+1024 FROM t1;
+INSERT INTO t1 SELECT id+2048 FROM t1;
+INSERT INTO t1 SELECT id+4096 FROM t1;
+INSERT INTO t1 SELECT id+8192 FROM t1;
+INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
+INSERT INTO t2 VALUE(NULL);
+# With default tmp_table_size / max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+sm
+16384
+set @@tmp_table_size=1024*256;
+# With reduced tmp_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+sm
+16384
+set @@tmp_table_size=@save_tmp_table_size;
+SET @@max_heap_table_size=1024*256;
+# With reduced max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+sm
+16384
+SET @@max_heap_table_size=@save_max_heap_table_size;
+# Back to default tmp_table_size / max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+sm
+16384
+DROP TABLE t1,t2;
+set storage_engine=@save_storage_engine;
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