Merge 4.1 -> 5.0.

BitKeeper/etc/ignore:
  auto-union
BitKeeper/etc/logging_ok:
  auto-union
VC++Files/sql/mysqld.dsp:
  Auto merged
client/Makefile.am:
  Auto merged
client/mysql.cc:
  Auto merged
client/mysqltest.c:
  Auto merged
configure.in:
  Auto merged
include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
include/my_sys.h:
  Auto merged
include/mysql_com.h:
  Auto merged
libmysqld/Makefile.am:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
myisam/mi_check.c:
  Auto merged
myisam/myisamchk.c:
  Auto merged
myisam/myisamdef.h:
  Auto merged
mysql-test/install_test_db.sh:
  Auto merged
mysql-test/r/insert_select.result:
  Auto merged
mysql-test/r/join_outer.result:
  Auto merged
mysql-test/r/null.result:
  Auto merged
mysql-test/r/connect.result:
  Auto merged
mysql-test/r/func_sapdb.result:
  Auto merged
mysql-test/r/mix_innodb_myisam_binlog.result:
  Auto merged
mysql-test/r/mysqldump.result:
  Auto merged
mysql-test/r/rpl_change_master.result:
  Auto merged
mysql-test/r/rpl_log.result:
  Auto merged
mysql-test/r/show_check.result:
  Auto merged
mysql-test/r/symlink.result:
  Auto merged
mysql-test/r/rpl_flush_log_loop.result:
  Auto merged
mysql-test/r/rpl_flush_tables.result:
  Auto merged
mysql-test/r/rpl_loaddata.result:
  Auto merged
mysql-test/r/rpl_loaddata_rule_m.result:
  Auto merged
mysql-test/r/rpl_loaddata_rule_s.result:
  Auto merged
mysql-test/r/rpl_max_relay_size.result:
  Auto merged
mysql-test/r/rpl_reset_slave.result:
  Auto merged
mysql-test/r/rpl_temporary.result:
  Auto merged
mysql-test/r/rpl_until.result:
  Auto merged
mysql-test/r/rpl_user_variables.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/r/union.result:
  Auto merged
mysql-test/r/variables.result:
  Auto merged
mysql-test/t/func_sapdb.test:
  Auto merged
mysql-test/t/mix_innodb_myisam_binlog.test:
  Auto merged
mysql-test/t/mysqlbinlog.test:
  Auto merged
mysql-test/t/rpl_change_master.test:
  Auto merged
mysql-test/t/rpl_log.test:
  Auto merged
mysql-test/t/variables.test:
  Auto merged
netware/BUILD/compile-linux-tools:
  Auto merged
netware/BUILD/compile-netware-END:
  Auto merged
netware/BUILD/compile-netware-all:
  Auto merged
netware/BUILD/compile-netware-standard:
  Auto merged
mysql-test/t/rpl_empty_master_crash.test:
  Auto merged
mysql-test/t/rpl_error_ignored_table.test:
  Auto merged
mysql-test/t/rpl_flush_log_loop.test:
  Auto merged
mysql-test/t/rpl_loaddata.test:
  Auto merged
mysql-test/t/rpl_loaddata_rule_m.test:
  Auto merged
mysql-test/t/rpl_loaddata_rule_s.test:
  Auto merged
mysql-test/t/rpl_max_relay_size.test:
  Auto merged
mysql-test/t/rpl_openssl.test:
  Auto merged
mysql-test/t/rpl_relayrotate-slave.opt:
  Auto merged
mysql-test/t/rpl_reset_slave.test:
  Auto merged
mysql-test/t/rpl_trunc_binlog.test:
  Auto merged
mysql-test/t/rpl_until.test:
  Auto merged
mysql-test/t/rpl_user_variables.test:
  Auto merged
mysql-test/t/subselect.test:
  Auto merged
scripts/make_binary_distribution.sh:
  Auto merged
scripts/mysql_create_system_tables.sh:
  Auto merged
scripts/mysql_fix_privilege_tables.sql:
  Auto merged
scripts/mysql_install_db.sh:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/ha_berkeley.cc:
  Auto merged
sql/ha_berkeley.h:
  Auto merged
sql/ha_innodb.h:
  Auto merged
sql/ha_myisam.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/item_create.cc:
  Auto merged
sql/item_create.h:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/item_sum.h:
  Auto merged
sql/item_timefunc.h:
  Auto merged
sql/lock.cc:
  Auto merged
sql/log_event.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/protocol.cc:
  Auto merged
sql/protocol.h:
  Auto merged
sql/repl_failsafe.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_acl.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_cache.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_db.cc:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_derived.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_list.h:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_rename.cc:
  Auto merged
sql/sql_repl.cc:
  Auto merged
sql/sql_repl.h:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_test.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql-common/client.c:
  Auto merged
tests/client_test.c:
  Auto merged

1 files changed, 129 insertions, 25 deletions

diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result
index 18d403313d7..19bda2fec44 100644
--- a/mysql-test/r/subselect.result
+++ b/mysql-test/r/subselect.result
@@ -6,7 +6,7 @@ explain extended select (select 2);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1248	Select 2 was reduced during optimisation
+Note	1249	Select 2 was reduced during optimisation
 Note	1003	select high_priority 2 AS `(select 2)`
 SELECT (SELECT 1) UNION SELECT (SELECT 2);
 (SELECT 1)
@@ -17,8 +17,8 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 3	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1248	Select 2 was reduced during optimisation
-Note	1248	Select 4 was reduced during optimisation
+Note	1249	Select 2 was reduced during optimisation
+Note	1249	Select 4 was reduced during optimisation
 Note	1003	select high_priority 1 AS `(SELECT 1)` union select 2 AS `(SELECT 2)`
 SELECT (SELECT (SELECT 0 UNION SELECT 0));
 (SELECT (SELECT 0 UNION SELECT 0))
@@ -29,7 +29,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 3	SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 4	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1248	Select 2 was reduced during optimisation
+Note	1249	Select 2 was reduced during optimisation
 Note	1003	select high_priority (select 0 AS `0` union select 0 AS `0`) AS `(SELECT (SELECT 0 UNION SELECT 0))`
 SELECT (SELECT 1 FROM (SELECT 1) as b HAVING a=1) as a;
 ERROR 42S22: Reference 'a' not supported (forward reference in item list)
@@ -46,8 +46,8 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 3	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
-Note	1275	Field or reference 'a' of SELECT #3 was resolved in SELECT #1
-Note	1275	Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1
+Note	1276	Field or reference 'a' of SELECT #3 was resolved in SELECT #1
+Note	1276	Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1
 Note	1003	select high_priority 1 AS `1` from (select 1 AS `a`) b having ((select b.a AS `a`) = 1)
 SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1;
 1
@@ -219,7 +219,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 2	DEPENDENT SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	2	
 3	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	3	Using where
 Warnings:
-Note	1275	Field or reference 't4.a' of SELECT #3 was resolved in SELECT #1
+Note	1276	Field or reference 't4.a' of SELECT #3 was resolved in SELECT #1
 Note	1003	select high_priority test.t4.b AS `b`,(select avg((test.t2.a + (select min(test.t3.a) AS `min(t3.a)` from test.t3 where (test.t3.a >= test.t4.a)))) AS `avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a))` from test.t2) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from test.t4
 select * from t3 where exists (select * from t2 where t2.b=t3.a);
 a
@@ -307,8 +307,8 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 2	DEPENDENT SUBQUERY	t1	system	NULL	NULL	NULL	NULL	1	
 3	DEPENDENT UNION	t5	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1275	Field or reference 't2.a' of SELECT #2 was resolved in SELECT #1
-Note	1275	Field or reference 't2.a' of SELECT #3 was resolved in SELECT #1
+Note	1276	Field or reference 't2.a' of SELECT #2 was resolved in SELECT #1
+Note	1276	Field or reference 't2.a' of SELECT #3 was resolved in SELECT #1
 Note	1003	select high_priority (select test.t1.a AS `a` from test.t1 where (test.t1.a = test.t2.a) union select test.t5.a AS `a` from test.t5 where (test.t5.a = test.t2.a)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,test.t2.a AS `a` from test.t2
 select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
 ERROR 21000: Subquery returns more than 1 row
@@ -326,7 +326,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t6	ALL	NULL	NULL	NULL	NULL	4	Using where
 2	DEPENDENT SUBQUERY	t7	eq_ref	PRIMARY	PRIMARY	4	test.t6.clinic_uq	1	
 Warnings:
-Note	1275	Field or reference 'clinic_uq' of SELECT #2 was resolved in SELECT #1
+Note	1276	Field or reference 'clinic_uq' of SELECT #2 was resolved in SELECT #1
 Note	1003	select high_priority test.t6.patient_uq AS `patient_uq`,test.t6.clinic_uq AS `clinic_uq` from test.t6 where exists(select test.t7.uq AS `uq`,test.t7.name AS `name` from test.t7 where (test.t7.uq = test.t6.clinic_uq) limit 1)
 select * from t1 where a= (select a from t2,t4 where t2.b=t4.b);
 ERROR 23000: Column: 'a' in field list is ambiguous
@@ -715,7 +715,7 @@ EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t2	ref	id	id	5	const	1	Using where; Using index
 Warnings:
-Note	1248	Select 2 was reduced during optimisation
+Note	1249	Select 2 was reduced during optimisation
 Note	1003	select high_priority test.t2.id AS `id` from test.t2 where (test.t2.id = 1)
 SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
 id
@@ -727,8 +727,8 @@ EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t2	ref	id	id	5	const	1	Using where; Using index
 Warnings:
-Note	1248	Select 3 was reduced during optimisation
-Note	1248	Select 2 was reduced during optimisation
+Note	1249	Select 3 was reduced during optimisation
+Note	1249	Select 2 was reduced during optimisation
 Note	1003	select high_priority test.t2.id AS `id` from test.t2 where (test.t2.id = (1 + 1))
 EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -860,8 +860,8 @@ explain extended select (select a+1) from t1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
 Warnings:
-Note	1275	Field or reference 'a' of SELECT #2 was resolved in SELECT #1
-Note	1248	Select 2 was reduced during optimisation
+Note	1276	Field or reference 'a' of SELECT #2 was resolved in SELECT #1
+Note	1249	Select 2 was reduced during optimisation
 Note	1003	select high_priority (test.t1.a + 1) AS `(select a+1)` from test.t1
 select (select a+1) from t1;
 (select a+1)
@@ -978,7 +978,7 @@ ERROR 42S02: Table 'test.t1' doesn't exist
 CREATE TABLE t1 (a int, KEY(a));
 HANDLER t1 OPEN;
 HANDLER t1 READ a=((SELECT 1));
-ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use
+ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1))' at line 1
 HANDLER t1 CLOSE;
 drop table t1;
 create table t1 (a int);
@@ -1049,12 +1049,12 @@ UNIQUE KEY `maxnumrep` (`maxnumrep`)
 ) ENGINE=MyISAM CHARSET=latin1;
 INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test');
 Warnings:
-Warning	1264	Data truncated for column 'date' at row 1
-Warning	1264	Data truncated for column 'date' at row 2
+Warning	1265	Data truncated for column 'date' at row 1
+Warning	1265	Data truncated for column 'date' at row 2
 INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test');
 Warnings:
-Warning	1264	Data truncated for column 'date' at row 1
-Warning	1264	Data truncated for column 'date' at row 2
+Warning	1265	Data truncated for column 'date' at row 1
+Warning	1265	Data truncated for column 'date' at row 2
 INSERT INTO t3 VALUES (1,1);
 SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE
 numeropost=topic);
@@ -1168,9 +1168,9 @@ SELECT 0 IN (SELECT 1 FROM t1 a);
 EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
-2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
-Note	1003	select high_priority <in_optimizer>(0,<exists>(select 1 AS `Not_used` from test.t1 a where isnull(1) having <is_not_null_test>(1) limit 1)) AS `0 IN (SELECT 1 FROM t1 a)`
+Note	1003	select high_priority <in_optimizer>(0,<exists>(select 1 AS `Not_used` from test.t1 a limit 1)) AS `0 IN (SELECT 1 FROM t1 a)`
 INSERT INTO t1 (pseudo) VALUES ('test1');
 SELECT 0 IN (SELECT 1 FROM t1 a);
 0 IN (SELECT 1 FROM t1 a)
@@ -1178,9 +1178,9 @@ SELECT 0 IN (SELECT 1 FROM t1 a);
 EXPLAIN EXTENDED SELECT 0 IN (SELECT 1 FROM t1 a);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
-2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
-Note	1003	select high_priority <in_optimizer>(0,<exists>(select 1 AS `Not_used` from test.t1 a where isnull(1) having <is_not_null_test>(1) limit 1)) AS `0 IN (SELECT 1 FROM t1 a)`
+Note	1003	select high_priority <in_optimizer>(0,<exists>(select 1 AS `Not_used` from test.t1 a limit 1)) AS `0 IN (SELECT 1 FROM t1 a)`
 drop table t1;
 CREATE TABLE `t1` (
 `i` int(11) NOT NULL default '0',
@@ -1246,7 +1246,7 @@ insert into t1 values (1,0), (2,0), (3,0);
 insert into t2 values (1,1), (2,1), (3,1), (2,2);
 update ignore t1 set b=(select b from t2 where t1.a=t2.a);
 Warnings:
-Error	1241	Subquery returns more than 1 row
+Error	1242	Subquery returns more than 1 row
 select * from t1;
 a	b
 1	1
@@ -1577,6 +1577,16 @@ INSERT INTO t2 VALUES (100, 200, 'C');
 SELECT DISTINCT COLC FROM t1 WHERE COLA = (SELECT COLA FROM t2 WHERE COLB = 200 AND COLC ='C' LIMIT 1);
 COLC
 DROP TABLE t1, t2;
+CREATE TABLE t1 (a int(1));
+INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5);
+SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100;
+(SELECT a)
+1
+2
+3
+4
+5
+DROP TABLE t1;
 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;
@@ -1611,3 +1621,97 @@ id	max_anno_dep	PIPPO
 50	1990	0
 51	1990	NULL
 DROP TABLE t1, t2;
+create table t1 (a int);
+insert into t1 values (1), (2), (3);
+SET SQL_SELECT_LIMIT=1;
+select sum(a) from (select * from t1) as a;
+sum(a)
+6
+select 2 in (select * from t1);
+2 in (select * from t1)
+1
+SET SQL_SELECT_LIMIT=default;
+drop table t1;
+CREATE TABLE t1 (a int, b int, INDEX (a));
+INSERT INTO t1 VALUES (1, 1), (1, 2), (1, 3);
+SELECT * FROM t1 WHERE a = (SELECT MAX(a) FROM t1 WHERE a = 1) ORDER BY b;
+a	b
+1	1
+1	2
+1	3
+DROP TABLE t1;
+create table t1(val varchar(10));
+insert into t1 values ('aaa'), ('bbb'),('eee'),('mmm'),('ppp');
+select count(*) from t1 as w1 where w1.val in (select w2.val from t1 as w2 where w2.val like 'm%') and w1.val in (select w3.val from t1 as w3 where w3.val like 'e%');
+count(*)
+0
+drop table t1;
+create table t1 (id int not null, text varchar(20) not null default '', primary key (id));
+insert into t1 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text11'), (12, 'text12');
+select * from t1 where id not in (select id from t1 where id < 8);
+id	text
+8	text8
+9	text9
+10	text10
+11	text11
+12	text12
+select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);
+id	text
+8	text8
+9	text9
+10	text10
+11	text11
+12	text12
+explain extended select * from t1 where id not in (select id from t1 where id < 8);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	12	Using where
+2	DEPENDENT SUBQUERY	t1	unique_subquery	PRIMARY	PRIMARY	4	func	1	Using index; Using where
+Warnings:
+Note	1003	select high_priority test.t1.id AS `id`,test.t1.text AS `text` from test.t1 where not(<in_optimizer>(test.t1.id,<exists>(<primary_index_lookup>(<cache>(test.t1.id) in t1 on PRIMARY where (test.t1.id < 8)))))
+explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	tt	ALL	NULL	NULL	NULL	NULL	12	Using where
+2	DEPENDENT SUBQUERY	t1	eq_ref	PRIMARY	PRIMARY	4	test.tt.id	7	Using where; Using index
+Warnings:
+Note	1276	Field or reference 'tt.id' of SELECT #2 was resolved in SELECT #1
+Note	1003	select high_priority test.tt.id AS `id`,test.tt.text AS `text` from test.t1 tt where not(exists(select test.t1.id AS `id` from test.t1 where ((test.t1.id < 8) and ((test.t1.id = test.tt.id) or isnull(test.t1.id))) having (test.t1.id is not null) limit 1))
+insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001');
+create table t2 (id int not null, text varchar(20) not null default '', primary key (id));
+insert into t2 (id, text) values (1, 'text1'), (2, 'text2'), (3, 'text3'), (4, 'text4'), (5, 'text5'), (6, 'text6'), (7, 'text7'), (8, 'text8'), (9, 'text9'), (10, 'text10'), (11, 'text1'), (12, 'text2'), (13, 'text3'), (14, 'text4'), (15, 'text5'), (16, 'text6'), (17, 'text7'), (18, 'text8'), (19, 'text9'), (20, 'text10'),(21, 'text1'), (22, 'text2'), (23, 'text3'), (24, 'text4'), (25, 'text5'), (26, 'text6'), (27, 'text7'), (28, 'text8'), (29, 'text9'), (30, 'text10'), (31, 'text1'), (32, 'text2'), (33, 'text3'), (34, 'text4'), (35, 'text5'), (36, 'text6'), (37, 'text7'), (38, 'text8'), (39, 'text9'), (40, 'text10'), (41, 'text1'), (42, 'text2'), (43, 'text3'), (44, 'text4'), (45, 'text5'), (46, 'text6'), (47, 'text7'), (48, 'text8'), (49, 'text9'), (50, 'text10');
+select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id);
+id	text	id	text	id	text
+1	text1	1	text1	1	text1
+2	text2	2	text2	2	text2
+3	text3	3	text3	3	text3
+4	text4	4	text4	4	text4
+5	text5	5	text5	5	text5
+6	text6	6	text6	6	text6
+7	text7	7	text7	7	text7
+8	text8	8	text8	8	text8
+9	text9	9	text9	9	text9
+10	text10	10	text10	10	text10
+11	text11	11	text1	11	text11
+12	text12	12	text2	12	text12
+1000	text1000	NULL	NULL	1000	text1000
+1001	text1001	NULL	NULL	1000	text1000
+explain extended select * from t1 a left join t2 b on (a.id=b.id or b.id is null) join t1 c on (if(isnull(b.id), 1000, b.id)=c.id);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	a	ALL	NULL	NULL	NULL	NULL	14	
+1	SIMPLE	b	eq_ref	PRIMARY	PRIMARY	4	test.a.id	2	
+1	SIMPLE	c	eq_ref	PRIMARY	PRIMARY	4	func	1	Using where
+Warnings:
+Note	1003	select high_priority test.a.id AS `id`,test.a.text AS `text`,test.b.id AS `id`,test.b.text AS `text`,test.c.id AS `id`,test.c.text AS `text` from test.t1 a left join test.t2 b on(((test.a.id = test.b.id) or isnull(test.b.id))) join test.t1 c where (if(isnull(test.b.id),1000,test.b.id) = test.c.id)
+drop table t1,t2;
+create table t1 (a int);
+insert into t1 values (1);
+explain select benchmark(1000, (select a from t1 where a=sha(rand())));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+2	UNCACHEABLE SUBQUERY	t1	system	NULL	NULL	NULL	NULL	1	
+drop table t1;
+create table t1(id int);
+create table t2(id int);
+create table t3(flag int);
+select (select * from t3 where id not null) from t1, t2;
+ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'null) from t1, t2' at line 1
+drop table t1,t2,t3;