1 files changed, 29 insertions, 3 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test
index 16ba6c9e602..3ae695c8967 100644
--- a/mysql-test/t/subselect.test
+++ b/mysql-test/t/subselect.test
@@ -1,6 +1,6 @@
 
 select (select 2);
-drop table if exists t1,t2,t3,t4,attend,clinic;
+drop table if exists t1,t2,t3,t4,t5,attend,clinic;
 create table t1 (a int);
 create table t2 (a int, b int);
 create table t3 (a int);
@@ -19,13 +19,18 @@ select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
 union (select * from t4 order by a limit 2) limit 3;
 select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) 
 union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
+explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) 
+union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
 select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
 select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from 
 (select * from t2 where a>1) as tt;
+explain select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from 
+(select * from t2 where a>1) as tt;
 select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
 select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1);
 select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1);
 select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
+explain select b,(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2) from t4;
 select * from t3 where exists (select * from t2 where t2.b=t3.a);
 select * from t3 where not exists (select * from t2 where t2.b=t3.a);
 insert into t4 values (12,7),(1,7),(10,9),(9,6),(7,6),(3,9);
@@ -33,11 +38,32 @@ select b,max(a) as ma from t4 group by b having b < (select max(t2.a)
 from t2 where t2.b=t4.b);
 select b,max(a) as ma from t4 group by b having b >= (select max(t2.a)
 from t2 where t2.b=t4.b);
-
+create table t5 (a int);
+select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
+insert into t5 values (5);
+select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
+insert into t5 values (2);
+select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
+explain select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
+-- error 1230
+select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
 create table attend (patient_uq int, clinic_uq int, index i1 (clinic_uq));
 create table clinic( uq int primary key, name char(25));
 insert into clinic values(1,"Oblastnaia bolnitsa"),(2,"Bolnitsa Krasnogo Kresta");
 insert into attend values (1,1),(1,2),(2,2),(1,3);
 select * from attend where exists (select * from clinic where uq = clinic_uq);
 
-drop table t1,t2,t3,t4,attend,clinic;
+# different tipes & group functions
+drop table if exists t1,t2,t3;
+
+CREATE TABLE t3 (a varchar(20),b char(1) NOT NULL default '0');
+INSERT INTO t3 VALUES ('W','a'),('A','c'),('J','b');
+CREATE TABLE t2 (a varchar(20),b int NOT NULL default '0');
+INSERT INTO t2 VALUES ('W','1'),('A','3'),('J','2');
+CREATE TABLE t1 (a varchar(20),b date NOT NULL default '0000-00-00');
+INSERT INTO t1 VALUES ('W','1732-02-22'),('A','1735-10-30'),('J','1743-04-13');
+SELECT * FROM t1 WHERE b = (SELECT MIN(b) FROM t1);
+SELECT * FROM t2 WHERE b = (SELECT MIN(b) FROM t2);
+SELECT * FROM t3 WHERE b = (SELECT MIN(b) FROM t3);
+
+drop table t1,t2,t3,t4,t5,attend,clinic;