Fix bug lp:985667, MDEV-229

Analysis:

The reason for the wrong result is the interaction between constant
optimization (in this case 1-row table) and subquery optimization.

- First the outer query is optimized, and 'make_join_statistics' finds that
table t2 has one row, reads that row, and marks the whole table as constant.
This also means that all fields of t2 are constant.

- Next, we optimize the subquery in the end of the outer 'make_join_statistics'.
The field 'f2' is considered constant, with value '3'. The subquery predicate
is rewritten as the constant TRUE.

- The outer query execution detects early that the whole query result is empty
and calls 'return_zero_rows'. Since the query is with implicit grouping, we
have to produce one row with special values for the aggregates (depending on
each aggregate function), and NULL values for all non-aggregate fields.  This
function calls 'no_rows_in_result' to set each aggregate function to the
default value when it aggregates over an empty result, and then calls
'send_data', which in turn evaluates each Item in the SELECT list.

- When evaluation reaches the subquery predicate, it executes the subquery
with field 'f2' having a constant value '3', and the subquery produces the
incorrect result '7'.

Solution:

Implement Item::no_rows_in_result for all subquery predicates. In order to
make this work, it is also needed to make all val_* methods of all subquery
predicates respect the Item_subselect::forced_const flag. Otherwise subqueries
are executed anyways, and override the default value set by no_rows_in_result
with whatever result is produced from the subquery evaluation.

6 files changed, 239 insertions, 5 deletions

diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result
index 95d82396bf0..ae0a51d2966 100644
--- a/mysql-test/r/subselect.result
+++ b/mysql-test/r/subselect.result
@@ -4532,7 +4532,7 @@ SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
 FROM t1 
 WHERE a = 230;
 MAX(b)	(SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
-NULL	0
+NULL	NULL
 DROP TABLE t1, st1, st2;
 #
 # Bug #48709: Assertion failed in sql_select.cc:11782: 
@@ -6004,5 +6004,46 @@ INSERT INTO t1 VALUES (1);
 SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 a
 drop table t1;
+#
+# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+# main query and implicit grouping
+#
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	NULL
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	1
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+drop table t1,t2;
 # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
diff --git a/mysql-test/r/subselect_no_mat.result b/mysql-test/r/subselect_no_mat.result
index 46c7b48a918..9dacb562c19 100644
--- a/mysql-test/r/subselect_no_mat.result
+++ b/mysql-test/r/subselect_no_mat.result
@@ -4534,7 +4534,7 @@ SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
 FROM t1 
 WHERE a = 230;
 MAX(b)	(SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
-NULL	0
+NULL	NULL
 DROP TABLE t1, st1, st2;
 #
 # Bug #48709: Assertion failed in sql_select.cc:11782: 
@@ -6003,6 +6003,47 @@ INSERT INTO t1 VALUES (1);
 SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 a
 drop table t1;
+#
+# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+# main query and implicit grouping
+#
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	NULL
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	1
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+drop table t1,t2;
 # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
 set optimizer_switch=default;
diff --git a/mysql-test/r/subselect_no_opts.result b/mysql-test/r/subselect_no_opts.result
index 6bd5e0e4ddd..6b3b1545de2 100644
--- a/mysql-test/r/subselect_no_opts.result
+++ b/mysql-test/r/subselect_no_opts.result
@@ -4530,7 +4530,7 @@ SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
 FROM t1 
 WHERE a = 230;
 MAX(b)	(SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
-NULL	0
+NULL	NULL
 DROP TABLE t1, st1, st2;
 #
 # Bug #48709: Assertion failed in sql_select.cc:11782: 
@@ -5999,6 +5999,47 @@ INSERT INTO t1 VALUES (1);
 SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 a
 drop table t1;
+#
+# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+# main query and implicit grouping
+#
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	NULL
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	1
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+drop table t1,t2;
 # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
 set @optimizer_switch_for_subselect_test=null;
diff --git a/mysql-test/r/subselect_no_scache.result b/mysql-test/r/subselect_no_scache.result
index cccf910842b..837506fe1c2 100644
--- a/mysql-test/r/subselect_no_scache.result
+++ b/mysql-test/r/subselect_no_scache.result
@@ -4538,7 +4538,7 @@ SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
 FROM t1 
 WHERE a = 230;
 MAX(b)	(SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
-NULL	0
+NULL	NULL
 DROP TABLE t1, st1, st2;
 #
 # Bug #48709: Assertion failed in sql_select.cc:11782: 
@@ -6010,6 +6010,47 @@ INSERT INTO t1 VALUES (1);
 SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 a
 drop table t1;
+#
+# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+# main query and implicit grouping
+#
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	NULL
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	1
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+drop table t1,t2;
 # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
 set optimizer_switch=default;
diff --git a/mysql-test/r/subselect_no_semijoin.result b/mysql-test/r/subselect_no_semijoin.result
index 5c8ccfdbda0..a5465f8104f 100644
--- a/mysql-test/r/subselect_no_semijoin.result
+++ b/mysql-test/r/subselect_no_semijoin.result
@@ -4530,7 +4530,7 @@ SELECT MAX(b), (SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
 FROM t1 
 WHERE a = 230;
 MAX(b)	(SELECT COUNT(*) FROM st1,st2 WHERE st2.b <= t1.b)
-NULL	0
+NULL	NULL
 DROP TABLE t1, st1, st2;
 #
 # Bug #48709: Assertion failed in sql_select.cc:11782: 
@@ -5999,6 +5999,47 @@ INSERT INTO t1 VALUES (1);
 SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 a
 drop table t1;
+#
+# LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+# main query and implicit grouping
+#
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	NULL
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	1
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+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
+2	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+COUNT(f1)	f4
+0	0
+drop table t1,t2;
 # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;
 set @optimizer_switch_for_subselect_test=null;
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test
index 6e2b2ef86ae..be0663fc4cb 100644
--- a/mysql-test/t/subselect.test
+++ b/mysql-test/t/subselect.test
@@ -5090,6 +5090,35 @@ SELECT a FROM t1 WHERE ( SELECT MIN(a) = 100 );
 
 drop table t1;
 
+--echo #
+--echo # LP BUG#985667 Wrong result with subquery in SELECT clause, and constant table in 
+--echo # main query and implicit grouping
+--echo #
+
+CREATE TABLE t1 (f1 int) engine=MyISAM;
+INSERT INTO t1 VALUES (7),(8);
+
+CREATE TABLE t2 (f2 int, f3 varchar(1)) engine=MyISAM;
+INSERT INTO t2 VALUES (3,'f');
+
+EXPLAIN
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+SELECT COUNT(f1), (SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+
+EXPLAIN
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+SELECT COUNT(f1), exists(SELECT f1 FROM t1 WHERE f2 > 0 limit 1) AS f4 FROM t2, t1 WHERE 'v'= f3;
+
+EXPLAIN
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+SELECT COUNT(f1), f2 > ALL (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+
+EXPLAIN
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+SELECT COUNT(f1), f2 IN (SELECT f1 FROM t1 WHERE f2 > 0) AS f4 FROM t2, t1 WHERE 'v'= f3;
+
+drop table t1,t2;
+
 
 --echo # return optimizer switch changed in the beginning of this test
 set optimizer_switch=@subselect_tmp;