Merge branch '10.2' into 10.3

1 files changed, 1306 insertions, 0 deletions

diff --git a/mysql-test/main/subselect3.inc b/mysql-test/main/subselect3.inc
new file mode 100644
index 00000000000..8ed1c9ee210
--- /dev/null
+++ b/mysql-test/main/subselect3.inc
@@ -0,0 +1,1306 @@
+--disable_warnings
+drop table if exists t0, t1, t2, t3, t4, t5, t11, t12, t21, t22;
+--enable_warnings
+
+set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on,semijoin_with_cache=on';
+
+#
+# 1. Subquery with GROUP/HAVING
+#
+create table t1 (oref int, grp int, ie int) ;
+insert into t1 (oref, grp, ie) values
+ (1, 1, 1),
+ (1, 1, 1),
+ (1, 2, NULL),
+
+ (2, 1, 3),
+
+ (3, 1, 4),
+ (3, 2, NULL);
+
+# Ok, for
+#   select max(ie) from t1 where oref=PARAM group by grp
+# we'll have:
+# PARAM      subquery result  
+#   1   ->   {(1), (NULL)}    matching + NULL
+#   2   ->   {(3)}            non-matching
+#   3   ->   {(3), (NULL)}    non-matching + NULL
+#   4   ->   {}               empty set
+
+create table t2 (oref int, a int);
+insert into t2 values 
+  (1, 1),
+  (2, 2),
+  (3, 3),
+  (4, NULL),
+  (2, NULL);
+
+# true, false, null, false, null
+select a, oref, a in (select max(ie) 
+  from t1 where oref=t2.oref group by grp) Z from t2;
+
+# This must have a trigcond
+explain extended
+select a, oref, a in (select max(ie) 
+  from t1 where oref=t2.oref group by grp) Z from t2;
+
+# This must not have a trigcond:
+explain extended
+select a, oref from t2 
+where a in (select max(ie) from t1 where oref=t2.oref group by grp);
+select a, oref, a in (
+  select max(ie) from t1 where oref=t2.oref group by grp union
+  select max(ie) from t1 where oref=t2.oref group by grp
+  ) Z from t2;
+
+# Non-correlated subquery, 2 NULL evaluations
+create table t3 (a int);
+insert into t3 values (NULL), (NULL);
+flush status;
+select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
+show status like 'Handler_read_rnd_next';
+select ' ^ This must show 11' Z;
+
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off";
+
+# This must show trigcond:
+explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
+
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t1, t2, t3;
+
+# 
+#  2. Subquery handled with 'index_subquery':
+# 
+create table t1 (a int, oref int, key(a));
+insert into t1 values 
+  (1, 1),
+  (1, NULL),
+  (2, 3),
+  (2, NULL),
+  (3, NULL);
+insert into t1 values (5, 7), (8, 9), (4, 1); 
+
+create table t2 (a int, oref int);
+insert into t2 values (1, 1), (2,2), (NULL, 3), (NULL, 4);
+
+select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
+
+# The next explain shows "using index" but that is just incorrect display
+# (there is a bug filed about this).
+explain extended 
+select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
+
+flush status;
+select oref, a from t2 where a in (select a from t1 where oref=t2.oref);
+# This will only show access to t2:
+show status like '%Handler_read_rnd_next';
+
+# Check that repeated NULL-scans are not cached (subq. is not correlated):
+delete from t2;
+insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0);
+
+set optimizer_switch='subquery_cache=off';
+flush status;
+select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
+show status like '%Handler_read%';
+select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z;
+set @@optimizer_switch=@save_optimizer_switch;
+
+drop table t1, t2;
+
+#
+# 3. Subquery handled with 'unique_index_subquery':
+#
+create table t1 (a int, b int, primary key (a));
+insert into t1 values (1,1), (3,1),(100,1);
+
+create table t2 (a int, b int);
+insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
+
+select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
+
+drop table t1, t2;
+
+#
+# 4. Subquery that is a join, with ref access
+#
+create table t1 (a int, b int, key(a));
+insert into t1 values 
+  (0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
+
+create table t2 like t1;
+insert into t2 select * from t1;
+update t2 set b=1;
+
+create table t3 (a int, oref int);
+insert into t3 values (1, 1), (NULL,1), (NULL,0);
+select a, oref, 
+       t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z 
+from t3;
+
+# This must have trigcond in WHERE and HAVING:
+explain extended
+select a, oref, 
+       t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z 
+from t3;
+
+drop table t1, t2, t3;
+
+
+#
+# BUG#24085: Wrong query result for "NULL IN (SELECT ... UNION SELECT ...)"
+#
+
+# case 1: NULL IN (SELECT not_null_val FROM ...) w/o HAVING/GROUP-BY/etc
+create table t1 (a int NOT NULL, b int NOT NULL, key(a));
+insert into t1 values 
+  (0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
+
+create table t2 like t1;
+insert into t2 select * from t1;
+update t2 set b=1;
+
+create table t3 (a int, oref int);
+insert into t3 values (1, 1), (NULL,1), (NULL,0);
+select a, oref, 
+       t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z 
+from t3;
+
+--echo This must show a trig_cond:
+explain extended
+select a, oref, 
+       t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z 
+from t3;
+drop table t1,t2,t3;
+
+
+# case 2: NULL IN (SELECT not_null_val FROM) where SELECT has GROUP BY
+create table t1 (oref int, grp int);
+insert into t1 (oref, grp) values
+ (1, 1),
+ (1, 1);
+
+# Ok, for  
+#   select count(*) from t1 group by grp having grp=PARAM
+# we'll have:
+#  PARAM    subuqery result
+#    1  ->    {(2)}   
+#    2  ->    {} - empty set
+create table t2 (oref int, a int);
+insert into t2 values 
+  (1, NULL),
+  (2, NULL);
+
+select a, oref, 
+       a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
+
+--echo This must show a trig_cond:
+explain extended
+select a, oref, 
+       a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
+
+drop table t1, t2;
+
+create table t1 (a int, b int, primary key (a));
+insert into t1 values (1,1), (3,1),(100,1);
+create table t2 (a int, b int);
+insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
+
+select a,b, a in (select a from t1 where t1.b = t2.b union select a from
+t1 where t1.b = t2.b) Z from t2 ;
+select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
+drop table t1, t2;
+
+
+#
+# BUG#24127: Incorrect results of row-based subqueries with NULLs on the left side.
+#
+create table t3 (a int);
+insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (a int, b int, oref int);
+insert into t2 values (NULL,1, 100), (NULL,2, 100);
+
+create table t1 (a int, b int, c int, key(a,b));
+insert into t1 select 2*A, 2*A, 100 from t3;
+
+# First test index subquery engine
+explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
+select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
+
+# Then check that we do turn off 'ref' scans in the subquery
+create table t4 (x int);
+insert into t4 select A.a + 10*B.a from t1 A, t1 B;
+explain extended 
+  select a,b, oref, 
+         (a,b) in (select a,b from t1,t4 where c=t2.oref) Z 
+  from t2;
+select a,b, oref, 
+       (a,b) in (select a,b from t1,t4 where c=t2.oref) Z 
+from t2;
+
+drop table t1,t2,t3,t4;
+
+# More tests for tricky multi-column cases, where some of pushed-down
+# equalities are used for index lookups and some arent.
+create table t1 (oref char(4), grp int, ie1 int, ie2 int);
+insert into t1 (oref, grp, ie1, ie2) values
+ ('aa', 10, 2, 1),
+ ('aa', 10, 1, 1),
+ ('aa', 20, 2, 1),
+ ('bb', 10, 3, 1),
+ ('cc', 10, 4, 2),
+ ('cc', 20, 3, 2),
+ 
+ ('ee', 10, 2, 1),
+ ('ee', 10, 1, 2),
+ 
+ ('ff', 20, 2, 2),
+ ('ff', 20, 1, 2);
+create table t2 (oref char(4), a int, b int);
+insert into t2 values 
+  ('ee', NULL, 1),
+  ('bb', 2, 1),
+  ('ff', 2, 2),
+  ('cc', 3, NULL),
+  ('bb', NULL, NULL),
+  ('aa', 1, 1),
+  ('dd', 1, NULL);
+alter table t1 add index idx(ie1,ie2);
+
+# cc 3 NULL NULL
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ;
+insert into t2 values ('new1', 10,10);
+insert into t1 values ('new1', 1234, 10, NULL); 
+# new1, 10, 10, NULL,
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; 
+explain extended
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10; 
+drop table t1, t2;
+
+# Now test different column types:
+create table t1 (oref char(4), grp int, ie int);
+insert into t1 (oref, grp, ie) values
+ ('aa', 10, 2),
+ ('aa', 10, 1),
+ ('aa', 20, NULL),
+
+ ('bb', 10, 3),
+
+ ('cc', 10, 4),
+ ('cc', 20, NULL),
+ 
+ ('ee', 10, NULL),
+ ('ee', 10, NULL),
+ 
+ ('ff', 20, 2),
+ ('ff', 20, 1);
+
+create table t2 (oref char(4), a int);
+insert into t2 values 
+  ('ee', NULL),
+  ('bb', 2),
+  ('ff', 2),
+  ('cc', 3),
+  ('aa', 1),
+  ('dd', NULL),
+  ('bb', NULL);
+
+select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); 
+
+select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
+
+
+select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
+
+select oref, a from t2 where 
+  a in (select min(ie) from t1 where oref=t2.oref group by grp);
+  
+select oref, a from t2 where 
+  a not in (select min(ie) from t1 where oref=t2.oref group by grp);
+
+#
+update t1 set ie=3 where oref='ff' and ie=1;
+
+select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
+grp) Z from t2;
+
+
+select oref, a from t2 where a in (select min(ie) from t1 where
+oref=t2.oref group by grp);
+
+select oref, a from t2 where a not in (select min(ie) from t1 where
+oref=t2.oref group by grp);
+
+select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
+grp having min(ie) > 1) Z from t2;
+
+select oref, a from t2 where a in (select min(ie) from t1 where
+oref=t2.oref group by grp having min(ie) > 1);
+  
+select oref, a from t2 where a not in (select min(ie) from t1 where
+oref=t2.oref group by grp having min(ie) > 1);
+
+#
+alter table t1 add index idx(ie);
+
+explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); 
+
+select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
+
+
+alter table t1 drop index idx;
+alter table t1 add index idx(oref,ie);
+
+explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a from t2 where a in (select ie from t1 where oref=t2.oref); 
+
+select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
+
+explain 
+select oref, a, 
+       a in (select min(ie) from t1 where oref=t2.oref 
+             group by grp having min(ie) > 1) Z 
+from t2;
+
+select oref, a, 
+       a in (select min(ie) from t1 where oref=t2.oref 
+             group by grp having min(ie) > 1) Z 
+from t2;
+
+select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref 
+                                   group by grp having min(ie) > 1);
+  
+select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref 
+                                       group by grp having min(ie) > 1);
+
+drop table t1,t2;
+
+create table t1 (oref char(4), grp int, ie1 int, ie2 int);
+insert into t1 (oref, grp, ie1, ie2) values
+ ('aa', 10, 2, 1),
+ ('aa', 10, 1, 1),
+ ('aa', 20, 2, 1),
+
+ ('bb', 10, 3, 1),
+
+ ('cc', 10, 4, 2),
+ ('cc', 20, 3, 2),
+ 
+ ('ee', 10, 2, 1),
+ ('ee', 10, 1, 2),
+ 
+ ('ff', 20, 2, 2),
+ ('ff', 20, 1, 2);
+
+create table t2 (oref char(4), a int, b int);
+insert into t2 values 
+  ('ee', NULL, 1),
+  ('bb', 2, 1),
+  ('ff', 2, 2),
+  ('cc', 3, NULL),
+  ('bb', NULL, NULL),
+  ('aa', 1, 1),
+  ('dd', 1, NULL);
+
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); 
+
+select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
+
+select oref, a, b, 
+             (a,b) in (select min(ie1),max(ie2) from t1 
+                       where oref=t2.oref group by grp) Z 
+from t2;
+
+select oref, a, b from t2 where 
+  (a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
+  
+select oref, a, b from t2 where
+  (a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
+
+alter table t1 add index idx(ie1,ie2);
+
+explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref); 
+
+select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
+
+explain extended 
+select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
+
+drop table t1,t2;
+
+create table t1 (oref char(4), grp int, ie int primary key);
+insert into t1 (oref, grp, ie) values
+ ('aa', 10, 2),
+ ('aa', 10, 1),
+
+ ('bb', 10, 3),
+
+ ('cc', 10, 4),
+ ('cc', 20, 5),
+ ('cc', 10, 6);
+ 
+create table t2 (oref char(4), a int);
+insert into t2 values 
+  ('ee', NULL),
+  ('bb', 2),
+  ('cc', 5),
+  ('cc', 2),
+  ('cc', NULL),
+  ('aa', 1),
+  ('bb', NULL);
+
+explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
+
+select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
+
+select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
+
+explain 
+select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
+
+select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
+
+drop table t1,t2;
+
+#
+# BUG#24420: row-based IN suqueries with aggregation when the left operand
+#            of the subquery predicate may contain NULL values
+#
+
+create table t1 (a int, b int);
+insert into t1 values (0,0), (2,2), (3,3);
+create table t2 (a int, b int);
+insert into t2 values (1,1), (3,3);
+
+select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
+
+insert into t2 values (NULL,4);
+select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
+
+drop table t1,t2;
+
+#
+# Bug #24484: Aggregate function used in column list subquery gives erroneous 
+# error
+#
+CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
+INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),
+  (2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'),
+  (1,9,'m');
+CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
+INSERT INTO t2 SELECT * FROM t1;
+
+# Gives error, but should work since it is (a, b) is the PK so only one 
+# given match possible
+SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b))
+  as test FROM t1 GROUP BY a;
+SELECT * FROM t1 GROUP by t1.a
+  HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c
+                                                HAVING MAX(t2.b+t1.a) < 10));
+
+SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c;
+
+SELECT a, MAX(b),
+ (SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) 
+  LIMIT 1) 
+  as cnt, 
+ (SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) 
+  as t_b,
+ (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) 
+  as t_b,
+ (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1)
+  as t_b
+ FROM t1 GROUP BY a;
+
+SELECT a, MAX(b),
+ (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test 
+ FROM t1 GROUP BY a;
+
+
+DROP TABLE t1, t2;
+
+# The next three test cases must be executed with the IN=>EXISTS strategy
+set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off";
+
+#
+# Bug #27870: crash of an equijoin query with WHERE condition containing 
+#             a subquery predicate of the form <join attr> NOT IN (SELECT ...)
+#
+
+CREATE TABLE t1 (a int);
+CREATE TABLE t2 (b int, PRIMARY KEY(b));
+INSERT INTO t1 VALUES (1), (NULL), (4);
+INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6);
+
+EXPLAIN EXTENDED 
+SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
+SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
+SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4));
+
+DROP TABLE t1,t2;
+
+#
+# Bug #28375: crash for NOT IN subquery predicate when left operand becomes NULL  
+#
+
+CREATE TABLE t1 (id int);
+CREATE TABLE t2 (id int PRIMARY KEY);
+CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10));
+INSERT INTO t1 VALUES (2), (NULL), (3), (1);
+INSERT INTO t2 VALUES (234), (345), (457);
+INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa');
+
+EXPLAIN
+SELECT * FROM t1
+  WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 
+                        WHERE t3.name='xxx' AND t2.id=t3.id);
+SELECT * FROM t1
+  WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3 
+                        WHERE t3.name='xxx' AND t2.id=t3.id);
+
+SELECT (t1.id IN (SELECT t2.id FROM t2,t3 
+                    WHERE t3.name='xxx' AND t2.id=t3.id)) AS x
+  FROM t1;
+
+DROP TABLE t1,t2,t3;   
+
+#
+# Bug #22855: Optimizer doesn't rewrite NOT IN subselects to a correlated 
+# subquery 
+#
+CREATE TABLE t1 (a INT NOT NULL);
+INSERT INTO t1 VALUES (1),(-1), (65),(66);
+
+CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY);
+INSERT INTO t2 VALUES (65),(66);
+
+SELECT a FROM t1 WHERE a NOT IN (65,66);
+SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
+EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
+
+DROP TABLE t1, t2;
+
+set @@optimizer_switch=@save_optimizer_switch;
+
+#
+# Bug #34763: item_subselect.cc:1235:Item_in_subselect::row_value_transformer:
+#             Assertion failed, unexpected error message:
+#             ERROR 1247 (42S22): Reference '<list ref>' not supported (forward
+#             reference in item list)
+#
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES(1);
+
+CREATE TABLE t2 (placeholder CHAR(11));
+INSERT INTO t2 VALUES("placeholder");
+
+SELECT ROW(1, 2) IN (SELECT t1.a, 2)         FROM t1 GROUP BY t1.a;
+SELECT ROW(1, 2) IN (SELECT t1.a, 2 FROM t2) FROM t1 GROUP BY t1.a;
+
+DROP TABLE t1, t2;
+
+#
+# Bug #36005: crash in subselect with single row
+#             (subselect_single_select_engine::exec)
+#
+
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1),(2),(3);
+CREATE TABLE t2 SELECT * FROM t1;
+
+SELECT 1 FROM t1 WHERE t1.a NOT IN (SELECT 1 FROM t1, t2 WHERE 0);
+
+DROP TABLE t1, t2;
+
+#
+# Bug 2198
+#
+
+create table t1 (a int, b decimal(13, 3)); 
+insert into t1 values (1, 0.123);
+select a, (select max(b) from t1) into outfile "subselect.out.file.1" from t1;
+delete from t1;
+load data infile "subselect.out.file.1" into table t1;
+select * from t1;
+drop table t1;
+let $datadir=`select @@datadir`;
+--remove_file $datadir/test/subselect.out.file.1
+
+#
+# Bug #37894: Assertion in init_read_record_seq in handler.h line 1444
+#
+
+CREATE TABLE t1 (
+  pk INT PRIMARY KEY,
+  int_key INT,
+  varchar_key VARCHAR(5) UNIQUE,
+  varchar_nokey VARCHAR(5)
+);
+INSERT INTO t1 VALUES (9, 7,NULL,NULL), (10,8,'p' ,'p');
+
+SELECT varchar_nokey
+FROM t1
+WHERE NULL NOT IN (
+ SELECT INNR.pk FROM t1 AS INNR2
+   LEFT JOIN t1 AS INNR ON ( INNR2.int_key = INNR.int_key )
+   WHERE INNR.varchar_key > 'n{'
+);
+
+DROP TABLE t1;
+
+#
+# Bug #39069: <row constructor> IN <table-subquery> seriously messed up
+#
+
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1), (2), (11);
+
+--echo # 2nd and 3rd columns should be same
+SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1 GROUP BY t1.a;
+SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1 GROUP BY t1.a;
+SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1;
+SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1;
+
+# The x alias is used below to workaround bug #40674.
+# Regression tests for sum function on outer column in subselect from dual:
+SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 22), ROW(11, 12) IN (SELECT MAX(x), 22) FROM t1;
+--echo # 2nd and 3rd columns should be same
+EXPLAIN SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1;
+SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1;
+
+DROP TABLE t1;
+
+--echo # both columns should be same
+SELECT ROW(1,2) = (SELECT NULL, NULL), ROW(1,2) IN (SELECT NULL, NULL);
+SELECT ROW(1,2) = (SELECT   1,  NULL), ROW(1,2) IN (SELECT    1, NULL);
+SELECT ROW(1,2) = (SELECT NULL,    2), ROW(1,2) IN (SELECT NULL,    2);
+SELECT ROW(1,2) = (SELECT NULL,    1), ROW(1,2) IN (SELECT NULL,    1);
+SELECT ROW(1,2) = (SELECT    1,    1), ROW(1,2) IN (SELECT    1,    1);
+SELECT ROW(1,2) = (SELECT    1,    2), ROW(1,2) IN (SELECT    1,    2);
+
+#
+# Bug #37362      Crash in do_field_eq
+#
+# Note that currently this test produces wrong output, see MBug#430669.
+#
+CREATE TABLE t1 (a INT, b INT, c INT);
+INSERT INTO t1 VALUES (1,1,1), (1,1,1);
+
+--error 1054
+EXPLAIN EXTENDED 
+  SELECT c FROM 
+    ( SELECT 
+      (SELECT COUNT(a) FROM 
+        (SELECT COUNT(b) FROM t1) AS x GROUP BY c
+      ) FROM t1 GROUP BY b
+    ) AS y;
+SHOW WARNINGS;
+
+DROP TABLE t1;
+
+
+--echo End of 5.0 tests
+
+--echo #  
+--echo # BUG#36896: Server crash on SELECT FROM DUAL
+--echo # 
+create table t1 (a int);
+select 1 as res from dual where (1) in (select * from t1);
+drop table t1;
+
+#
+# BUG#36135 "void Diagnostics_area::set_eof_status(THD*): Assertion `!is_set()' failed."
+#
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t1 (
+  a int(11) default null,
+  b int(11) default null,
+  key (a)
+);
+# produce numbers 0..999
+insert into t1 select A.a+10*(B.a+10*C.a),A.a+10*(B.a+10*C.a) from t0 A, t0 B, t0 C;
+
+create table t2 (a int(11) default null);
+insert into t2 values (0),(1);
+
+create table t3 (a int(11) default null);
+insert into t3 values (0),(1);
+
+create table t4 (a int(11) default null);
+insert into t4 values (0),(1);
+
+create table t5 (a int(11) default null);
+insert into t5 values (0),(1),(0),(1);
+
+# this must not fail assertion
+--error 1242
+select * from t2, t3 
+where
+    t2.a < 10 and
+    t3.a+1 = 2 and
+    t3.a in (select t1.b from t1
+                 where t1.a+1=t1.a+1 and
+                       t1.a < (select t4.a+10                                  
+                                  from t4, t5 limit 2));
+
+drop table t0, t1, t2, t3, t4, t5;
+
+--echo # 
+--echo # BUG#48177 - SELECTs with NOT IN subqueries containing NULL 
+--echo #             values return too many records
+--echo # 
+
+CREATE TABLE t1 (
+  i1 int DEFAULT NULL,
+  i2 int DEFAULT NULL
+) ;
+
+INSERT INTO t1 VALUES (1,    NULL);
+INSERT INTO t1 VALUES (2,    3);
+INSERT INTO t1 VALUES (4,    NULL);
+INSERT INTO t1 VALUES (4,    0);
+INSERT INTO t1 VALUES (NULL, NULL);
+
+CREATE TABLE t2 (
+  i1 int DEFAULT NULL,
+  i2 int DEFAULT NULL
+) ;
+
+INSERT INTO t2 VALUES (4, NULL);
+INSERT INTO t2 VALUES (5, 0);
+
+--echo 
+--echo Data in t1
+SELECT i1, i2 FROM t1;
+
+--echo 
+--echo Data in subquery (should be filtered out)
+SELECT i1, i2 FROM t2 ORDER BY i1;
+
+FLUSH STATUS;
+set @save_optimizer_switch2=@@optimizer_switch;
+set optimizer_switch='subquery_cache=off';
+
+--echo 
+SELECT i1, i2
+FROM t1
+WHERE (i1, i2) 
+      NOT IN (SELECT i1, i2 FROM t2);
+
+--echo 
+--echo # Check that the subquery only has to be evaluated once 
+--echo # for all-NULL values even though there are two (NULL,NULL) records
+--echo # Baseline:
+SHOW STATUS LIKE '%Handler_read_rnd_next';
+
+--echo 
+INSERT INTO t1 VALUES (NULL, NULL); 
+FLUSH STATUS;
+
+--echo 
+SELECT i1, i2
+FROM t1
+WHERE (i1, i2) 
+      NOT IN (SELECT i1, i2 FROM t2);
+
+--echo 
+--echo # Handler_read_rnd_next should be one more than baseline 
+--echo # (read record from t1, but do not read from t2)
+SHOW STATUS LIKE '%Handler_read_rnd_next';
+
+set @@optimizer_switch=@save_optimizer_switch2;
+DROP TABLE t1,t2;
+
+--echo End of 5.1 tests
+
+#
+# Test for the problem with using sj-materialization when subquery's select 
+# list element SCOL is covered by equality propagation and has preceding equal
+# column PCOL which belongs to a table within the the semi-join nest: SJM-Scan
+# process should unpack column value not to SCOL but rather to PCOL, as 
+# substitute_best_equal has made all conditions to refer to PCOL.
+#
+CREATE TABLE t1 (
+  a int(11) NOT NULL,
+  b int(11) NOT NULL,
+  c datetime default NULL,
+  PRIMARY KEY  (a),
+  KEY idx_bc (b,c)
+);
+
+INSERT INTO t1 VALUES 
+(406989,67,'2006-02-23 17:08:46'), (150078,67,'2005-10-26 11:17:45'),
+(406993,67,'2006-02-27 11:20:57'), (245655,67,'2005-12-08 15:59:08'),
+(406994,67,'2006-02-27 11:26:46'), (256,67,NULL),
+(398341,67,'2006-02-20 04:48:44'), (254,67,NULL),(1120,67,NULL),
+(406988,67,'2006-02-23 17:07:22'), (255,67,NULL),
+(398340,67,'2006-02-20 04:38:53'),(406631,67,'2006-02-23 10:49:42'),
+(245653,67,'2005-12-08 15:59:07'),(406992,67,'2006-02-24 16:47:18'),
+(245654,67,'2005-12-08 15:59:08'),(406995,67,'2006-02-28 11:55:00'),
+(127261,67,'2005-10-13 12:17:58'),(406991,67,'2006-02-24 16:42:32'),
+(245652,67,'2005-12-08 15:58:27'),(398545,67,'2006-02-20 04:53:13'),
+(154504,67,'2005-10-28 11:53:01'),(9199,67,NULL),(1,67,'2006-02-23 15:01:35'),
+(223456,67,NULL),(4101,67,NULL),(1133,67,NULL),
+(406990,67,'2006-02-23 18:01:45'),(148815,67,'2005-10-25 15:34:17'),
+(148812,67,'2005-10-25 15:30:01'),(245651,67,'2005-12-08 15:58:27'),
+(154503,67,'2005-10-28 11:52:38');
+
+create table t11 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 asc;
+create table t12 select * from t1 where b = 67 AND (c IS NULL OR c > NOW()) order by 3 desc;
+create table t21 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 asc;
+create table t22 select * from t1 where b = 67 AND (c IS NULL OR c > '2005-12-08') order by 3 desc;
+
+set @@optimizer_switch=@save_optimizer_switch;
+set @@optimizer_switch='materialization=off';
+
+update t22 set c = '2005-12-08 15:58:27' where a = 255;
+explain select t21.* from t21,t22 where t21.a = t22.a and 
+t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a;
+select t21.* from t21,t22 where t21.a = t22.a and 
+t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a;
+
+set @@optimizer_switch=@save_optimizer_switch;
+
+drop table t1, t11, t12, t21, t22;
+
+#
+# Test sj-materialization re-execution. The test isn't meaningful (materialized
+# table stays the same across all executions) because it's hard to create a
+# dataset that would verify correct re-execution without hitting BUG#31480
+# 
+create table t1(a int);
+insert into t1 values (0),(1);
+
+set @@optimizer_switch='firstmatch=off,materialization=off';
+explain 
+select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X;
+select (select max(Y.a) from t1 Y where a in (select a from t1 Z) and a < X.a) as subq from t1 X;
+set @@optimizer_switch=@save_optimizer_switch;
+
+drop table t1;
+
+#
+# Test confluent duplicate weedout
+#
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 as select * from t0;
+insert into t1 select a+10 from t0;
+set @@optimizer_switch='firstmatch=off,materialization=off';
+insert into t0 values(2);
+explain select * from t1 where 2 in (select a from t0);
+select * from t1 where 2 in (select a from t0);
+set @@optimizer_switch=@save_optimizer_switch;
+set @@optimizer_switch='materialization=off';
+explain select * from t1 where 2 in (select a from t0);
+select * from t1 where 2 in (select a from t0);
+set @@optimizer_switch=@save_optimizer_switch;
+
+
+set @@optimizer_switch=@save_optimizer_switch;
+set @@optimizer_switch='materialization=off';
+
+# 
+# FirstMatch referring to a derived table
+#
+set @tmp_optimizer_switch=@@optimizer_switch;
+set optimizer_switch='derived_merge=off,derived_with_keys=off';
+explain select * from (select a from t0) X where a in (select a from t1);
+drop table t0, t1;
+set optimizer_switch=@tmp_optimizer_switch;
+
+#
+# LooseScan: Check if we can pick it together with range access
+#
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2));
+insert into t1 select A.a+10*(B.a+10*C.a), 0, 0, 'filler' from t0 A, t0 B, t0 C;
+insert into t1 select * from t1 where kp1 < 20;
+
+create table t3 (a int);
+insert into t3 select A.a + 10*B.a from t0 A, t0 B;
+
+explain select * from t3 where a in (select kp1 from t1 where kp1<20);
+
+create table t4 (pk int primary key);
+insert into t4 select a from t3;
+
+explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20
+and t4.pk=t1.c);
+
+drop table t1, t3, t4;
+
+set @@optimizer_switch=@save_optimizer_switch;
+
+#
+# Test if we handle duplicate elimination temptable overflowing to disk
+#
+create table t1 (a int) as select * from t0 where a < 5;
+
+set @save_max_heap_table_size=@@max_heap_table_size;
+set @@optimizer_switch='firstmatch=off,materialization=off';
+set @@max_heap_table_size= 16384;
+
+explain select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a);
+flush status;
+select count(*) from t0 A, t0 B, t0 C, t0 D where D.a in (select a from t1 E where a+1 < 10000 + A.a + B.a +C.a+D.a);
+show status like 'Created_tmp_disk_tables';
+set @save_max_heap_table_size=@@max_heap_table_size;
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t0, t1;
+
+#
+# Materialize + Scan + ref access to the subsequent table based on scanned
+# value
+# 
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2(a int);
+insert into t2 values (1),(2);
+create table t3 ( a int , filler char(100), key(a)); 
+insert into t3 select A.a + 10*B.a, 'filler' from t0 A, t0 B;
+explain select * from t3 where a in (select a from t2) and (a > 5 or a < 10); 
+select * from t3 where a in (select a from t2); 
+
+drop table t0, t2, t3;
+
+#
+# DATETIME type checks
+#
+set @@optimizer_switch='firstmatch=off,materialization=off';
+create table t1 (a date);
+insert into t1 values ('2008-01-01'),('2008-01-01'),('2008-02-01'),('2008-02-01');
+create table t2 (a int);
+insert into t2 values (1),(2);
+create table t3 (a char(10));
+insert into t3 select * from t1;
+insert into t3 values (1),(2);
+explain select * from t2 where a in (select a from t1);
+explain select * from t2 where a in (select a from t2);
+explain select * from t2 where a in (select a from t3);
+explain select * from t1 where a in (select a from t3);
+drop table t1, t2, t3;
+create table t1 (a decimal);
+insert into t1 values (1),(2);
+explain select * from t1 where a in (select a from t1);
+drop table t1;
+set @@optimizer_switch=@save_optimizer_switch;
+
+set @@optimizer_switch=@save_optimizer_switch;
+set @@optimizer_switch='materialization=off';
+
+#
+# SJ-Materialization-scan for non-first table
+#
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 as select * from t1;
+create table t3 (a int, b int, filler char(100), key(a));
+insert into t3 select A.a + 10*B.a, A.a + 10*B.a, 'filler' from t1 A, t1 B, t1 C;
+explain select * from t1, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30) and t1.a =3;
+
+#
+# Verify that straight_join modifier in parent or child prevents flattening
+#
+explain select straight_join * from t1 A, t1 B where A.a in (select a from t2);
+explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B);
+explain select * from t2 where a in (select straight_join A.a from t1 A, t1 B);
+explain select straight_join * from t2 X, t2 Y 
+where X.a in (select straight_join A.a from t1 A, t1 B);
+
+#
+# SJ-Materialization scan + first table being system const table
+#
+create table t0 (a int, b int);
+insert into t0 values(1,1);
+explain select * from t0, t3 where t3.a in (select a from t2) and (t3.a < 10 or t3.a >30);
+create table t4 as select a as x, a as y from t1;
+explain select * from t0, t3 where (t3.a, t3.b) in (select x,y from t4) and (t3.a < 10 or t3.a >30);
+drop table t0,t1,t2,t3,t4;
+
+#
+# LooseScan with ref access
+#
+create table t0 (a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 (a int, b int, filler char(100), key(a,b));
+insert into t1 select A.a, B.a, 'filler' from t0 A, t0 B;
+create table t2 as select * from t1;
+
+explain select * from t2 where a in (select b from t1 where a=3);
+explain select * from t2 where (b,a) in (select a,b from t1 where a=3);
+
+drop table t1,t2;
+
+set @@optimizer_switch=@save_optimizer_switch;
+
+#
+# Multi-column sj-materialization with lookups
+#
+create table t1 (a int, b int);
+insert into t1 select a,a from t0;
+create table t2 (a int, b int); 
+insert into t2 select A.a + 10*B.a, A.a + 10*B.a from t0 A, t0 B;
+
+set @@optimizer_switch='firstmatch=off,materialization=off';
+explain select * from t1 where (a,b) in (select a,b from t2);
+
+# A smallish test if find_best() still works for semi-join optimization:
+set @save_optimizer_search_depth=@@optimizer_search_depth;
+set @@optimizer_search_depth=63;
+explain select * from t1 where (a,b) in (select a,b from t2);
+set @@optimizer_search_depth=@save_optimizer_search_depth;
+set @@optimizer_switch=@save_optimizer_switch;
+
+drop table t0, t1, t2;
+
+set @@optimizer_switch='materialization=off';
+
+#
+# Primitive SJ-Materialization tests for DECIMAL and DATE
+#
+create table t0 (a decimal(4,2));
+insert into t0 values (10.24), (22.11);
+create table t1 as select * from t0;
+insert into t1 select * from t0;
+explain select * from t0 where a in (select a from t1);
+select * from t0 where a in (select a from t1);
+drop table t0, t1;
+
+create table t0(a date);
+insert into t0 values ('2008-01-01'),('2008-02-02');
+create table t1 as select * from t0;
+insert into t1 select * from t0;
+explain select * from t0 where a in (select a from t1);
+select * from t0 where a in (select a from t1);
+drop table t0, t1;
+
+#
+# Fix a trivial crash with SJ-Materialization lookup, multiple tables in the
+# subquery, and a condition on some of inner tables but not others
+#
+create table t0(a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 as select a as a, a as b, a as c from t0 where a < 3;
+create table t2 as select a as a, a as b from t0 where a < 3;
+insert into t2 select * from t2;
+
+explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33);
+
+drop table t0,t1,t2;
+
+set @@optimizer_switch=@save_optimizer_switch;
+
+--echo
+--echo BUG#37842: Assertion in DsMrr_impl::dsmrr_init, at handler.cc:4307
+--echo
+CREATE TABLE t1 (
+  `pk` int(11) NOT NULL AUTO_INCREMENT,
+  `int_key` int(11) DEFAULT NULL,
+  PRIMARY KEY (`pk`),
+  KEY `int_key` (`int_key`)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1,9),(2,3),(3,8),(4,6),(5,9),(6,5),(7,5),(8,9),(9,1),(10,10);
+SELECT `pk` FROM t1 AS OUTR WHERE `int_key` = ALL (
+ SELECT `int_key` FROM t1 AS INNR WHERE INNR . `pk` >= 9
+);
+DROP TABLE t1;
+
+--echo 
+--echo BUG#40118 Crash when running Batched Key Access and requiring one match for each key
+--echo
+create table t0(a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t1 (a int, key(a));
+insert into t1 select * from t0;
+alter table t1 add b int not null, add filler char(200);
+insert into t1 select * from t1;
+insert into t1 select * from t1;
+
+set @save_join_cache_level=@@join_cache_level;
+set join_cache_level=6;
+select * from t0 where t0.a in (select t1.a from t1 where t1.b=0); 
+set join_cache_level=@save_join_cache_level;
+drop table t0, t1;
+
+--echo # 
+--echo # BUG#32665 Query with dependent subquery is too slow
+--echo #
+create table t1 (
+  idIndividual int primary key
+);
+insert into t1 values (1),(2);
+
+create table t2 (
+  idContact int primary key,
+  contactType int,
+  idObj int
+);
+insert into t2 values (1,1,1),(2,2,2),(3,3,3);
+
+create table t3 (
+  idAddress int primary key,
+  idContact int,
+  postalStripped varchar(100)
+);
+
+insert into t3 values (1,1, 'foo'), (2,2,'bar');
+
+--echo The following must be converted to a semi-join:
+set @save_optimizer_switch=@@optimizer_switch;
+set @@optimizer_switch='materialization=off';
+explain extended SELECT a.idIndividual FROM t1 a 
+WHERE a.idIndividual IN 
+	(	SELECT c.idObj FROM t3 cona 
+		INNER JOIN t2 c ON c.idContact=cona.idContact 
+		WHERE cona.postalStripped='T2H3B2'
+	);
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t1,t2,t3;
+
+--echo #
+--echo # BUG#47367 Crash in Name_resolution_context::process_error
+--echo #
+
+SET SESSION optimizer_switch = 'semijoin=off';
+CREATE TABLE t1 (f1 INTEGER);
+CREATE TABLE t2 LIKE t1;
+delimiter |;
+CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END|
+delimiter ;|
+CALL p1;
+ALTER TABLE t2 CHANGE COLUMN f1 my_column INT;
+CALL p1;
+DROP PROCEDURE p1;
+--echo # Restore the original column list of table t2:
+ALTER TABLE t2 CHANGE COLUMN my_column f1 INT;
+
+SET SESSION optimizer_switch = 'semijoin=on';
+delimiter |;
+--echo # Recreate procedure so that we eliminate any caching effects
+CREATE PROCEDURE p1 () BEGIN SELECT f1 FROM t1 WHERE f1 IN (SELECT f1 FROM t2); END|
+delimiter ;|
+CALL p1;
+ALTER TABLE t2 CHANGE COLUMN f1 my_column INT;
+--error ER_BAD_FIELD_ERROR
+CALL p1;
+DROP PROCEDURE p1;
+DROP TABLE t1, t2;
+
+--echo #
+--echo # fix of lp:824425 (prohibiting subqueries in row in
+--echo # left part of IN/ALL/ANY)
+--echo #
+
+CREATE TABLE t1 ( a int) ;
+INSERT INTO t1 VALUES (20),(30);
+
+CREATE TABLE t2 (a int) ;
+INSERT INTO t2 VALUES (3),(9);
+
+CREATE TABLE t3 ( a int, b int) ;
+INSERT INTO t3 VALUES (20,5),(30,6);
+
+set @optimizer_switch_save=@@optimizer_switch;
+SET SESSION optimizer_switch='semijoin=OFF,in_to_exists=OFF,materialization=ON,partial_match_rowid_merge=ON,partial_match_table_scan=OFF';
+
+SELECT * FROM t1
+WHERE (
+        ( SELECT a FROM t2 WHERE a = 9 )
+) NOT IN (
+        SELECT b
+        FROM t3
+);
+explain extended
+SELECT * FROM t1
+WHERE (
+        ( SELECT a FROM t2 WHERE a = 9 )
+) NOT IN (
+        SELECT b
+        FROM t3
+);
+
+--error ER_NOT_SUPPORTED_YET
+SELECT * FROM t1
+WHERE (
+        ( SELECT a FROM t2 WHERE a = 9 ),
+        ( SELECT a FROM t2 WHERE a = 3 )
+) NOT IN (
+        SELECT b , a
+        FROM t3
+);
+set optimizer_switch=@optimizer_switch_save;
+
+drop table t1,t2,t3;
+
+--echo End of 5.3 tests
+
+--echo #
+--echo # BUG#48920: COUNT DISTINCT returns 1 for NULL values when in a subquery 
+--echo #            in the select list
+--echo #
+
+--echo 
+CREATE TABLE t1 (
+  i int(11) DEFAULT NULL,
+  v varchar(1) DEFAULT NULL
+);
+
+--echo 
+INSERT INTO t1 VALUES (8,'v');
+INSERT INTO t1 VALUES (9,'r');
+INSERT INTO t1 VALUES (NULL,'y');
+
+--echo 
+CREATE TABLE t2 (
+  i int(11) DEFAULT NULL,
+  v varchar(1) DEFAULT NULL,
+  KEY i_key (i)
+);
+
+--echo 
+INSERT INTO t2 VALUES (NULL,'r');
+INSERT INTO t2 VALUES (0,'c');
+INSERT INTO t2 VALUES (0,'o');
+INSERT INTO t2 VALUES (2,'v');
+INSERT INTO t2 VALUES (7,'c');
+
+--echo 
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+              FROM t1
+              WHERE v  = t2.v) as subsel
+FROM t2;
+
+--echo 
+EXPLAIN EXTENDED
+SELECT i, v, (SELECT COUNT(DISTINCT i)
+              FROM t1
+              WHERE v  = t2.v) as subsel
+FROM t2;
+
+DROP TABLE t1,t2;
+
+--echo End of 5.6 tests