2. Slice of fix for Bug#42003 tests missing the disconnect of connections <> default

   - If missing: add "disconnect <session>"
   - If physical disconnect of non "default" sessions is not finished
     at test end: add routine which waits till this happened
+ additional improvements
  - remove superfluous files created by the test
  - replace error numbers by error names
  - remove trailing spaces, replace tabs by spaces
  - unify writing of bugs within comments
  - correct comments
  - minor changes of formatting
Fixed tests:
  backup
  check
  compress
  grant
  information_schema
  multi_update
  overflow
  packet
  query_cache_not_embedded
  sp-threads
  subselect
  synchronization
  timezone_grant

mysql-test/r/backup.result

 set SQL_LOG_BIN=0;
-drop table if exists t1, t2, t3;
+drop table if exists t1, t2, t3, t4;
 create table t4(n int);
 backup table t4 to '../bogus';
 Table	Op	Msg_type	Msg_text

mysql-test/r/check.result

-drop table if exists t1;
+drop table if exists t1,t2;
+drop view if exists v1;
 create table t1(n int not null, key(n), key(n), key(n), key(n));
 check table t1 extended;
 insert into t1 values (200000);

mysql-test/r/grant.result

@@ -262,7 +262,7 @@ drop user mysqltest_1@localhost;
 SET NAMES koi8r;
 CREATE DATABASE ;
 USE ;
-CREATE TABLE  ( int);
+CREATE TABLE  ( INT);
 GRANT SELECT ON .* TO @localhost;
 SHOW GRANTS FOR @localhost;
 Grants for @localhost
@@ -383,7 +383,7 @@ grant select (c) on mysqltest_2.t1 to mysqltest_3@localhost;
 grant update (d) on mysqltest_2.t2 to mysqltest_3@localhost;
 SELECT * FROM INFORMATION_SCHEMA.COLUMN_PRIVILEGES
 WHERE GRANTEE = '''mysqltest_3''@''localhost'''
-ORDER BY TABLE_NAME,COLUMN_NAME,PRIVILEGE_TYPE;
+ ORDER BY TABLE_NAME,COLUMN_NAME,PRIVILEGE_TYPE;
 GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
 'mysqltest_3'@'localhost'	NULL	mysqltest_1	t1	a	UPDATE	NO
 'mysqltest_3'@'localhost'	NULL	mysqltest_2	t1	c	SELECT	NO
@@ -391,11 +391,11 @@ GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRAN
 'mysqltest_3'@'localhost'	NULL	mysqltest_2	t2	d	UPDATE	NO
 SELECT * FROM INFORMATION_SCHEMA.TABLE_PRIVILEGES
 WHERE GRANTEE = '''mysqltest_3''@''localhost'''
-ORDER BY TABLE_NAME,PRIVILEGE_TYPE;
+ ORDER BY TABLE_NAME,PRIVILEGE_TYPE;
 GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
 SELECT * from INFORMATION_SCHEMA.SCHEMA_PRIVILEGES
 WHERE GRANTEE = '''mysqltest_3''@''localhost'''
-ORDER BY TABLE_SCHEMA,PRIVILEGE_TYPE;
+ ORDER BY TABLE_SCHEMA,PRIVILEGE_TYPE;
 GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	PRIVILEGE_TYPE	IS_GRANTABLE
 SELECT * from INFORMATION_SCHEMA.USER_PRIVILEGES
 WHERE GRANTEE = '''mysqltest_3''@''localhost'''
@@ -880,11 +880,11 @@ flush privileges;
 drop table t2;
 drop table t1;
 CREATE DATABASE mysqltest3;
-use mysqltest3;
+USE mysqltest3;
 CREATE TABLE t_nn (c1 INT);
 CREATE VIEW  v_nn AS SELECT * FROM t_nn;
 CREATE DATABASE mysqltest2;
-use mysqltest2;
+USE mysqltest2;
 CREATE TABLE t_nn (c1 INT);
 CREATE VIEW  v_nn AS SELECT * FROM t_nn;
 CREATE VIEW  v_yn AS SELECT * FROM t_nn;
@@ -954,7 +954,7 @@ DROP TABLE mysqltest3.t_nn;
 DROP DATABASE mysqltest3;
 REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'mysqltest_1'@'localhost';
 DROP USER 'mysqltest_1'@'localhost';
-use test;
+USE test;
 create user mysqltest1_thisisreallytoolong;
 ERROR HY000: String 'mysqltest1_thisisreallytoolong' is too long for user name (should be no longer than 16)
 GRANT CREATE ON mysqltest.* TO 1234567890abcdefGHIKL@localhost;
@@ -1106,16 +1106,16 @@ DROP DATABASE mysqltest1;
 DROP DATABASE mysqltest2;
 DROP USER mysqltest_1@localhost;
 DROP USER mysqltest_2@localhost;
-use test;
+USE test;
 CREATE TABLE t1 (f1 int, f2 int);
 INSERT INTO t1 VALUES(1,1), (2,2);
 CREATE DATABASE db27878;
 GRANT UPDATE(f1) ON t1 TO 'mysqltest_1'@'localhost';
 GRANT SELECT ON `test`.* TO 'mysqltest_1'@'localhost';
 GRANT ALL ON db27878.* TO 'mysqltest_1'@'localhost';
-use db27878;
+USE db27878;
 CREATE SQL SECURITY INVOKER VIEW db27878.v1 AS SELECT * FROM test.t1;
-use db27878;
+USE db27878;
 UPDATE v1 SET f2 = 4;
 ERROR HY000: View 'db27878.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
 SELECT * FROM test.t1;
@@ -1127,7 +1127,7 @@ REVOKE SELECT ON `test`.* FROM 'mysqltest_1'@'localhost';
 REVOKE ALL ON db27878.* FROM 'mysqltest_1'@'localhost';
 DROP USER mysqltest_1@localhost;
 DROP DATABASE db27878;
-use test;
+USE test;
 DROP TABLE t1;
 drop table if exists test;
 Warnings:

mysql-test/r/packet.result

+set @max_allowed_packet=@@global.max_allowed_packet;
+set @net_buffer_length=@@global.net_buffer_length;
 set global max_allowed_packet=100;
 Warnings:
 Warning	1292	Truncated incorrect max_allowed_packet value: '100'
@@ -33,3 +35,5 @@ len
 select length(repeat('a',2000));
 length(repeat('a',2000))
 2000
+set global max_allowed_packet=@max_allowed_packet;
+set global net_buffer_length=@net_buffer_length;

mysql-test/r/query_cache_notembedded.result

@@ -345,3 +345,19 @@ id
 drop table t1;
 drop function f1;
 set GLOBAL query_cache_size=0;
+DROP TABLE IF EXISTS t1;
+FLUSH STATUS;
+SET GLOBAL query_cache_size=1048576;
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
+SHOW STATUS LIKE 'Qcache_queries_in_cache';
+Variable_name	Value
+Qcache_queries_in_cache	0
+LOCK TABLES t1 WRITE;
+SELECT * FROM t1;
+UNLOCK TABLES;
+SHOW STATUS LIKE 'Qcache_queries_in_cache';
+Variable_name	Value
+Qcache_queries_in_cache	0
+DROP TABLE t1;
+SET GLOBAL query_cache_size= default;

mysql-test/r/subselect.result

@@ -2945,26 +2945,26 @@ create table t2 (a int primary key, b varchar(32), c int, unique key b(c, b));
 insert into t2(a, c, b) values (1,10,'359'), (2,10,'35988'), (3,10,'35989');
 explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'
-ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;
+             ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	system	PRIMARY	NULL	NULL	NULL	1	
 1	PRIMARY	r	const	PRIMARY	PRIMARY	4	const	1	
 2	DEPENDENT SUBQUERY	t2	range	b	b	40	NULL	2	Using where
 SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'
-ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;
+            ORDER BY t2.c DESC, t2.b DESC LIMIT 1) WHERE t1.a = 10;
 a	a	b
 10	3	35989
 explain SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'
-ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;
+            ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	system	PRIMARY	NULL	NULL	NULL	1	
 1	PRIMARY	r	const	PRIMARY	PRIMARY	4	const	1	
 2	DEPENDENT SUBQUERY	t2	range	b	b	40	NULL	2	Using where
 SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 ON r.a = (SELECT t2.a FROM t2 WHERE t2.c = t1.a AND t2.b <= '359899'
-ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;
+            ORDER BY t2.c, t2.b LIMIT 1) WHERE t1.a = 10;
 a	a	b
 10	1	359
 drop table t1,t2;

mysql-test/r/synchronization.result

-drop table if exists t1;
-CREATE TABLE t1 (x1 int);
-ALTER TABLE t1 CHANGE x1 x2 int;
+DROP TABLE IF EXISTS t1,t2;
+CREATE TABLE t1 (x1 INT);
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -8,7 +8,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -16,7 +16,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -24,7 +24,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -32,7 +32,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -40,7 +40,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -48,7 +48,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -56,7 +56,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -64,7 +64,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -72,7 +72,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -80,7 +80,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -88,7 +88,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -96,7 +96,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -104,7 +104,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -112,7 +112,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -120,7 +120,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -128,7 +128,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -136,7 +136,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -144,7 +144,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x1 x2 int;
+ALTER TABLE t1 CHANGE x1 x2 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table
@@ -152,7 +152,7 @@ t2	CREATE TABLE `t2` (
   `xx` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t2;
-ALTER TABLE t1 CHANGE x2 x1 int;
+ALTER TABLE t1 CHANGE x2 x1 INT;
 CREATE TABLE t2 LIKE t1;
 SHOW CREATE TABLE t2;
 Table	Create Table

mysql-test/t/backup.test

 
 # The server need to be started in $MYSQLTEST_VARDIR since it
 # uses ../std_data_ln/
--- source include/uses_vardir.inc
+--source include/uses_vardir.inc
+
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
 
 #
 # This test is a bit tricky as we can't use backup table to overwrite an old
@@ -12,7 +15,7 @@ connect (con2,localhost,root,,);
 connection con1;
 set SQL_LOG_BIN=0;
 --disable_warnings
-drop table if exists t1, t2, t3;
+drop table if exists t1, t2, t3, t4;
 --enable_warnings
 create table t4(n int);
 --replace_result ": 1" ": X" ": 2" ": X" ": 22" ": X" ": 23" ": X" $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
@@ -57,6 +60,9 @@ unlock tables;
 connection con1;
 reap;
 drop table t5;
+connection default;
+disconnect con1;
+disconnect con2;
 remove_file $MYSQLTEST_VARDIR/tmp/t1.MYD;
 remove_file $MYSQLTEST_VARDIR/tmp/t2.MYD;
 remove_file $MYSQLTEST_VARDIR/tmp/t3.MYD;
@@ -68,4 +74,9 @@ remove_file $MYSQLTEST_VARDIR/tmp/t3.frm;
 remove_file $MYSQLTEST_VARDIR/tmp/t4.frm;
 remove_file $MYSQLTEST_VARDIR/tmp/t5.frm;
 
+
 # End of 4.1 tests
+
+# Wait till all disconnects are completed
+--source include/wait_until_count_sessions.inc
+

mysql-test/t/check.test

+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 connect (con1,localhost,root,,);
 connect (con2,localhost,root,,);
 connection con1;
 --disable_warnings
-drop table if exists t1;
+drop table if exists t1,t2;
+drop view if exists v1;
 --enable_warnings
 
 # Add a lot of keys to slow down check
@@ -20,16 +24,18 @@ connection con2;
 insert into t1 values (200000);
 connection con1;
 reap;
+connection default;
+disconnect con1;
+disconnect con2;
 drop table t1;
 
+
 # End of 4.1 tests
 
 #
-# Bug #9897  Views: 'Check Table' crashes MySQL, with a view and a table 
+# Bug#9897 Views: 'Check Table' crashes MySQL, with a view and a table
 #          in the statement
 #
-
-connection default;
 Create table t1(f1 int);
 Create table t2(f1 int);
 Create view v1 as Select * from t1;
@@ -37,11 +43,15 @@ Check Table v1,t2;
 drop view v1;
 drop table t1, t2;
 
+
 #
-# BUG#26325 - TEMPORARY TABLE "corrupt" after first read, according to CHECK
-#             TABLE
+# Bug#26325 TEMPORARY TABLE "corrupt" after first read, according to CHECK TABLE
 #
 CREATE TEMPORARY TABLE t1(a INT);
 CHECK TABLE t1;
 REPAIR TABLE t1;
 DROP TABLE t1;
+
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/compress.test

@@ -6,6 +6,10 @@
 
 -- source include/have_compress.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 connect (comp_con,localhost,root,,,,,COMPRESS);
 
 # Check compression turned on
@@ -16,3 +20,10 @@ SHOW STATUS LIKE 'Compression';
 
 # Check compression turned on
 SHOW STATUS LIKE 'Compression';
+
+connection default;
+disconnect comp_con;
+
+# Wait till all disconnects are completed
+--source include/wait_until_count_sessions.inc
+

mysql-test/t/grant.test

@@ -3,6 +3,9 @@
 # Grant tests not performed with embedded server
 -- source include/not_embedded.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 # Cleanup
 --disable_warnings
 drop table if exists t1;
@@ -78,7 +81,7 @@ delete from mysql.db where user='mysqltest_1';
 delete from mysql.tables_priv where user='mysqltest_1';
 delete from mysql.columns_priv where user='mysqltest_1';
 flush privileges;
---error 1141
+--error ER_NONEXISTING_GRANT
 show grants for mysqltest_1@localhost;
 
 #
@@ -116,12 +119,12 @@ drop table t1;
 #
 # Test some error conditions
 #
---error  1221
+--error ER_WRONG_USAGE
 GRANT FILE on mysqltest.*  to mysqltest_1@localhost;
 select 1;     # To test that the previous command didn't cause problems
 
 #
-# Bug #4898: User privileges depending on ORDER BY Settings of table db
+# Bug#4898 User privileges depending on ORDER BY Settings of table db
 #
 insert into mysql.user (host, user) values ('localhost', 'test11');
 insert into mysql.db (host, db, user, select_priv) values
@@ -136,7 +139,7 @@ delete from mysql.user where user='test11';
 delete from mysql.db where user='test11';
 
 #
-# Bug#6123: GRANT USAGE inserts useless Db row
+# Bug#6123 GRANT USAGE inserts useless Db row
 #
 create database mysqltest1;
 grant usage on mysqltest1.* to test6123 identified by 'magic123';
@@ -160,7 +163,7 @@ grant select(a) on test.t1 to drop_user@localhost;
 show grants for drop_user@localhost;
 
 #
-# Bug3086
+# Bug#3086 SHOW GRANTS doesn't follow ANSI_QUOTES
 #
 set sql_mode=ansi_quotes;
 show grants for drop_user@localhost;
@@ -178,7 +181,7 @@ show grants for drop_user@localhost;
 revoke all privileges, grant option from drop_user@localhost;
 show grants for drop_user@localhost;
 drop user drop_user@localhost;
---error 1269
+--error ER_REVOKE_GRANTS
 revoke all privileges, grant option from drop_user@localhost;
 
 grant select(a) on test.t1 to drop_user1@localhost;
@@ -188,10 +191,10 @@ grant select on *.* to drop_user4@localhost;
 # Drop user now implicitly revokes all privileges.
 drop user drop_user1@localhost, drop_user2@localhost, drop_user3@localhost,
 drop_user4@localhost;
---error 1269
+--error ER_REVOKE_GRANTS
 revoke all privileges, grant option from drop_user1@localhost, drop_user2@localhost,
 drop_user3@localhost, drop_user4@localhost;
---error 1396
+--error ER_CANNOT_USER
 drop user drop_user1@localhost, drop_user2@localhost, drop_user3@localhost,
 drop_user4@localhost;
 drop table t1;
@@ -201,12 +204,12 @@ show grants for mysqltest_1@localhost;
 drop user mysqltest_1@localhost;
 
 #
-# Bug #3403 Wrong encodin in SHOW GRANTS output
+# Bug#3403 Wrong encoding in SHOW GRANTS, EPLAIN SELECT output
 #
 SET NAMES koi8r;
 CREATE DATABASE ;
 USE ;
-CREATE TABLE  ( int);
+CREATE TABLE  ( INT);
 
 GRANT SELECT ON .* TO @localhost;
 SHOW GRANTS FOR @localhost;
@@ -227,7 +230,7 @@ DROP DATABASE
 SET NAMES latin1;
 
 #
-# Bug #5831: REVOKE ALL PRIVILEGES, GRANT OPTION does not revoke everything
+# Bug#5831 REVOKE ALL PRIVILEGES, GRANT OPTION does not revoke everything
 #
 USE test;
 CREATE TABLE t1 (a int );
@@ -296,7 +299,7 @@ DROP DATABASE testdb9;
 DROP DATABASE testdb10;
 
 #
-# Bug #6932: a problem with 'revoke ALL PRIVILEGES'
+# Bug#6932 a problem with 'revoke ALL PRIVILEGES'
 #
 
 create table t1(a int, b int, c int, d int);
@@ -310,7 +313,7 @@ drop user grant_user@localhost;
 drop table t1;
 
 #
-# Bug#7391: Cross-database multi-table UPDATE security problem
+# Bug#7391 Cross-database multi-table UPDATE security problem
 #
 create database mysqltest_1;
 create database mysqltest_2;
@@ -319,7 +322,7 @@ create table mysqltest_1.t2 select 1 b, 2 r;
 create table mysqltest_2.t1 select 1 c, 2 s;
 create table mysqltest_2.t2 select 1 d, 2 t;
 
-#test the column privileges
+# test the column privileges
 grant update (a) on mysqltest_1.t1 to mysqltest_3@localhost;
 grant select (b) on mysqltest_1.t2 to mysqltest_3@localhost;
 grant select (c) on mysqltest_2.t1 to mysqltest_3@localhost;
@@ -338,17 +341,17 @@ SELECT * from INFORMATION_SCHEMA.SCHEMA_PRIVILEGES
 SELECT * from INFORMATION_SCHEMA.USER_PRIVILEGES
  WHERE GRANTEE = '''mysqltest_3''@''localhost'''
  ORDER BY TABLE_CATALOG,PRIVILEGE_TYPE;
---error 1143
+--error ER_COLUMNACCESS_DENIED_ERROR
 update mysqltest_1.t1, mysqltest_1.t2 set q=10 where b=1;
---error 1143
+--error ER_COLUMNACCESS_DENIED_ERROR
 update mysqltest_1.t2, mysqltest_2.t2 set d=20 where d=1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_1.t1, mysqltest_2.t2 set d=20 where d=1;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_2.t1, mysqltest_1.t2 set c=20 where b=1;
---error 1143
+--error ER_COLUMNACCESS_DENIED_ERROR
 update mysqltest_2.t1, mysqltest_2.t2 set d=10 where s=2;
-#the following two should work
+# the following two should work
 update mysqltest_1.t1, mysqltest_2.t2 set a=10,d=10;
 update mysqltest_1.t1, mysqltest_2.t1 set a=20 where c=20;
 connection master;
@@ -359,7 +362,7 @@ revoke all on mysqltest_1.t2 from mysqltest_3@localhost;
 revoke all on mysqltest_2.t1 from mysqltest_3@localhost;
 revoke all on mysqltest_2.t2 from mysqltest_3@localhost;
 
-#test the db/table level privileges
+# test the db/table level privileges
 grant all on mysqltest_2.* to mysqltest_3@localhost;
 grant select on *.* to mysqltest_3@localhost;
 # Next grant is needed to trigger bug#7391. Do not optimize!
@@ -371,15 +374,15 @@ connection conn2;
 use mysqltest_1;
 update mysqltest_2.t1, mysqltest_2.t2 set c=500,d=600;
 # the following failed before, should fail now.
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_1.t1, mysqltest_1.t2 set a=100,b=200;
 use mysqltest_2;
-#the following used to succeed, it must fail now.
---error 1142
+# the following used to succeed, it must fail now.
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_1.t1, mysqltest_1.t2 set a=100,b=200;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_2.t1, mysqltest_1.t2 set c=100,b=200;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 update mysqltest_1.t1, mysqltest_2.t2 set a=100,d=200;
 #lets see the result
 connection master;
@@ -393,6 +396,7 @@ delete from mysql.columns_priv where user="mysqltest_3";
 flush privileges;
 drop database mysqltest_1;
 drop database mysqltest_2;
+disconnect conn2;
 
 #
 # just SHOW PRIVILEGES test
@@ -400,7 +404,7 @@ drop database mysqltest_2;
 SHOW PRIVILEGES;
 
 #
-# Rights for renaming test (Bug #3270)
+# Rights for renaming test (Bug#3270)
 #
 connect (root,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK);
 connection root;
@@ -411,16 +415,18 @@ create table mysqltest.t1 (a int,b int,c int);
 grant all on mysqltest.t1 to mysqltest_1@localhost;
 connect (user1,localhost,mysqltest_1,,mysqltest,$MASTER_MYPORT,$MASTER_MYSOCK);
 connection user1;
--- error 1142
+-- error ER_TABLEACCESS_DENIED_ERROR
 alter table t1 rename t2;
 disconnect user1;
 connection root;
 revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
 delete from mysql.user where user=_binary'mysqltest_1';
 drop database mysqltest;
+connection default;
+disconnect root;
 
 #
-# check all new table priveleges
+# check all new table privileges
 #
 CREATE USER dummy@localhost;
 CREATE DATABASE mysqltest;
@@ -485,7 +491,7 @@ REVOKE ALL PRIVILEGES, GRANT OPTION FROM dummy@localhost;
 DROP USER dummy@localhost;
 DROP DATABASE mysqltest;
 #
-# Bug #11330: Entry in tables_priv with host = '' causes crash
+# Bug#11330 Entry in tables_priv with host = '' causes crash
 #
 connection default;
 use mysql;
@@ -496,7 +502,7 @@ flush privileges;
 use test;
 
 #
-# Bug #10892 user variables not auto cast for comparisons
+# Bug#10892 user variables not auto cast for comparisons
 # Check that we don't get illegal mix of collations
 #
 set @user123="non-existent";
@@ -515,18 +521,18 @@ show grants for root@localhost;
 set names latin1;
 
 #
-# Bug #15598 Server crashes in specific case during setting new password
+# Bug#15598 Server crashes in specific case during setting new password
 # - Caused by a user with host ''
 #
 create user mysqltest_7@;
 set password for mysqltest_7@ = password('systpass');
 show grants for mysqltest_7@;
 drop user mysqltest_7@;
---error 1141
+--error ER_NONEXISTING_GRANT
 show grants for mysqltest_7@;
 
 #
-# Bug#14385: GRANT and mapping to correct user account problems
+# Bug#14385 GRANT and mapping to correct user account problems
 #
 create database mysqltest;
 use mysqltest;
@@ -542,7 +548,7 @@ flush privileges;
 drop database mysqltest;
 
 #
-# Bug #27515: DROP previlege is not required for RENAME TABLE
+# Bug#27515 DROP previlege is not required for RENAME TABLE
 #
 connection master;
 create database db27515;
@@ -553,7 +559,7 @@ grant insert, create on db27515.t2 to user27515@localhost;
 
 connect (conn27515, localhost, user27515, , db27515);
 connection conn27515;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 rename table t1 to t2;
 disconnect conn27515;
 
@@ -565,7 +571,7 @@ drop database db27515;
 --echo End of 4.1 tests
 
 #
-# Bug #16297 In memory grant tables not flushed when users's hostname is ""
+# Bug#16297 In memory grant tables not flushed when users's hostname is ""
 #
 use test;
 create table t1 (a int);
@@ -582,11 +588,11 @@ create user mysqltest_8;
 create user mysqltest_8@host8;
 
 # Try to create them again
---error 1396
+--error ER_CANNOT_USER
 create user mysqltest_8@'';
---error 1396
+--error ER_CANNOT_USER
 create user mysqltest_8;
---error 1396
+--error ER_CANNOT_USER
 create user mysqltest_8@host8;
 
 select user, QUOTE(host) from mysql.user where user="mysqltest_8";
@@ -681,44 +687,43 @@ flush privileges;
 show grants for mysqltest_8@'';
 show grants for mysqltest_8;
 drop user mysqltest_8@'';
---error 1141
+--error ER_NONEXISTING_GRANT
 show grants for mysqltest_8@'';
 show grants for mysqltest_8;
 select * from  information_schema.user_privileges
 where grantee like "'mysqltest_8'%";
 drop user mysqltest_8;
 --replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
---error 1045
+--error ER_ACCESS_DENIED_ERROR
 connect (conn6,localhost,mysqltest_8,,);
 connection master;
---error 1141
+--error ER_NONEXISTING_GRANT
 show grants for mysqltest_8;
 drop user mysqltest_8@host8;
---error 1141
+--error ER_NONEXISTING_GRANT
 show grants for mysqltest_8@host8;
 
 # Restore the anonymous users.
 insert into mysql.user select * from t2;
 flush privileges;
 drop table t2;
-
 drop table t1;
 
 #
-# Bug#20214: Incorrect error when user calls SHOW CREATE VIEW on non
+# Bug#20214 Incorrect error when user calls SHOW CREATE VIEW on non
 #           privileged view
 #
 
 connection master;
 
 CREATE DATABASE mysqltest3;
-use mysqltest3;
+USE mysqltest3;
 
 CREATE TABLE t_nn (c1 INT);
 CREATE VIEW  v_nn AS SELECT * FROM t_nn;
 
 CREATE DATABASE mysqltest2;
-use mysqltest2;
+USE mysqltest2;
 
 CREATE TABLE t_nn (c1 INT);
 CREATE VIEW  v_nn AS SELECT * FROM t_nn;
@@ -740,24 +745,18 @@ SHOW CREATE VIEW  mysqltest2.v_nn;
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE TABLE mysqltest2.v_nn;
 
-
-
 # fail because of missing SHOW VIEW
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE VIEW  mysqltest2.v_yn;
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE TABLE mysqltest2.v_yn;
 
-
-
 # succeed (despite of missing SELECT, having SHOW VIEW bails us out)
 SHOW CREATE TABLE mysqltest2.v_ny;
 
 # succeed (despite of missing SELECT, having SHOW VIEW bails us out)
 SHOW CREATE VIEW  mysqltest2.v_ny;
 
-
-
 # fail because of missing (specific or generic) SELECT
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE TABLE mysqltest3.t_nn;
@@ -766,16 +765,12 @@ SHOW CREATE TABLE mysqltest3.t_nn;
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE VIEW  mysqltest3.t_nn;
 
-
-
 # fail because of missing missing (specific or generic) SELECT (and SHOW VIEW)
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE VIEW  mysqltest3.v_nn;
 --error ER_TABLEACCESS_DENIED_ERROR
 SHOW CREATE TABLE mysqltest3.v_nn;
 
-
-
 # succeed thanks to generic SELECT
 SHOW CREATE TABLE mysqltest2.t_nn;
 
@@ -783,8 +778,6 @@ SHOW CREATE TABLE mysqltest2.t_nn;
 --error ER_WRONG_OBJECT
 SHOW CREATE VIEW  mysqltest2.t_nn;
 
-
-
 # succeed, have SELECT and SHOW VIEW
 SHOW CREATE VIEW mysqltest2.v_yy;
 
@@ -792,8 +785,7 @@ SHOW CREATE VIEW mysqltest2.v_yy;
 SHOW CREATE TABLE mysqltest2.v_yy;
 
 
-
-#clean-up
+# clean-up
 connection master;
 
 # succeed, we're root
@@ -806,38 +798,30 @@ SHOW CREATE TABLE mysqltest2.t_nn;
 --error ER_WRONG_OBJECT
 SHOW CREATE VIEW mysqltest2.t_nn;
 
-
-
 DROP VIEW  mysqltest2.v_nn;
 DROP VIEW  mysqltest2.v_yn;
 DROP VIEW  mysqltest2.v_ny;
 DROP VIEW  mysqltest2.v_yy;
-
 DROP TABLE mysqltest2.t_nn;
-
 DROP DATABASE mysqltest2;
-
-
-
 DROP VIEW  mysqltest3.v_nn;
 DROP TABLE mysqltest3.t_nn;
-
 DROP DATABASE mysqltest3;
-
+disconnect mysqltest_1;
 REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'mysqltest_1'@'localhost';
 DROP USER 'mysqltest_1'@'localhost';
 
 # restore the original database
-use test;
+USE test;
 
 #
-# Bug #10668: CREATE USER does not enforce username length limit
+# Bug#10668 CREATE USER does not enforce username length limit
 #
 --error ER_WRONG_STRING_LENGTH
 create user mysqltest1_thisisreallytoolong;
 
 #
-# Test for BUG#16899: Possible buffer overflow in handling of DEFINER-clause.
+# Test for Bug#16899 Possible buffer overflow in handling of DEFINER-clause.
 #
 # These checks are intended to ensure that appropriate errors are risen when
 # illegal user name or hostname is specified in user-clause of GRANT/REVOKE
@@ -887,7 +871,7 @@ REVOKE EXECUTE ON PROCEDURE p1 FROM 1234567890abcdefGHIKL@localhost;
 REVOKE EXECUTE ON PROCEDURE t1 FROM some_user_name@1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTY;
 
 #
-# Bug #6774: Replication fails with Wrong usage of DB GRANT and GLOBAL PRIVILEGES
+# Bug#6774 Replication fails with Wrong usage of DB GRANT and GLOBAL PRIVILEGES
 #
 # Check if GRANT ... ON * ... fails when no database is selected
 connect (con1, localhost, root,,*NO-ONE*);
@@ -899,7 +883,7 @@ connection default;
 
 
 #
-# BUG#9504: Stored procedures: execute privilege doesn't make 'use database'
+# Bug#9504 Stored procedures: execute privilege doesn't make 'use database'
 # okay.
 #
 
@@ -981,7 +965,7 @@ DROP USER mysqltest_1@localhost;
 
 
 #
-# BUG#27337: Privileges are not restored properly.
+# Bug#27337 Privileges are not restored properly.
 #
 # Actually, the patch for this bugs fixes two problems. So, here are two test
 # cases.
@@ -1043,7 +1027,7 @@ DROP DATABASE mysqltest2;
 
 DROP USER mysqltest_1@localhost;
 
-# Test case 2: priveleges are not checked properly for prepared statements.
+# Test case 2: privileges are not checked properly for prepared statements.
 
 # Prepare.
 
@@ -1116,6 +1100,7 @@ EXECUTE stmt2;
 --echo
 --echo ---> connection: default
 
+--disconnect bug27337_con1
 --disconnect bug27337_con2
 
 DROP DATABASE mysqltest1;
@@ -1125,21 +1110,21 @@ DROP USER mysqltest_1@localhost;
 DROP USER mysqltest_2@localhost;
 
 #
-# Bug#27878: Unchecked privileges on a view referring to a table from another 
+# Bug#27878 Unchecked privileges on a view referring to a table from another
 #           database.
 #
-use test;
+USE test;
 CREATE TABLE t1 (f1 int, f2 int);
 INSERT INTO t1 VALUES(1,1), (2,2);
 CREATE DATABASE db27878;
 GRANT UPDATE(f1) ON t1 TO 'mysqltest_1'@'localhost';
 GRANT SELECT ON `test`.* TO 'mysqltest_1'@'localhost';
 GRANT ALL ON db27878.* TO 'mysqltest_1'@'localhost';
-use db27878;
+USE db27878;
 CREATE SQL SECURITY INVOKER VIEW db27878.v1 AS SELECT * FROM test.t1;
 connect (user1,localhost,mysqltest_1,,test);
 connection user1;
-use db27878;
+USE db27878;
 --error 1356
 UPDATE v1 SET f2 = 4;
 SELECT * FROM test.t1;
@@ -1150,11 +1135,11 @@ REVOKE SELECT ON `test`.* FROM 'mysqltest_1'@'localhost';
 REVOKE ALL ON db27878.* FROM 'mysqltest_1'@'localhost';
 DROP USER mysqltest_1@localhost;
 DROP DATABASE db27878;
-use test;
+USE test;
 DROP TABLE t1;
 
 #
-# Bug #33201 Crash occurs when granting update privilege on one column of a view
+# Bug#33201 Crash occurs when granting update privilege on one column of a view
 #
 drop table if exists test;
 drop function if exists test_function;
@@ -1183,3 +1168,7 @@ SET PASSWORD FOR CURRENT_USER() = PASSWORD("admin");
 SET PASSWORD FOR CURRENT_USER() = PASSWORD("");
 
 --echo End of 5.0 tests
+
+disconnect master;
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/information_schema.test

@@ -77,6 +77,7 @@ connection user4;
 select table_name, column_name, privileges from information_schema.columns
 where table_schema = 'mysqltest' and table_name = 'v1';
 connection default;
+disconnect user4;
 
 drop view v1, mysqltest.v1;
 drop tables mysqltest.t4, mysqltest.t1, t2, t3, t5;
@@ -153,7 +154,7 @@ drop view v1;
 connect (user1,localhost,mysqltest_1,,);
 connection user1;
 select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
---error 1305
+--error ER_SP_DOES_NOT_EXIST
 show create function sub1;
 connection user3;
 select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
@@ -172,6 +173,7 @@ show create function sub2;
 show function status like "sub2";
 connection default;
 disconnect user1;
+disconnect user3;
 drop function sub2;
 show create procedure sel2;
 
@@ -324,7 +326,7 @@ drop table t115;
 delimiter //;
 create procedure p108 () begin declare c cursor for select data_type
 from information_schema.columns;  open c; open c; end;//
---error 1325
+--error ER_SP_CURSOR_ALREADY_OPEN
 call p108()//
 delimiter ;//
 drop procedure p108;
@@ -347,11 +349,11 @@ from information_schema.tables
 where table_schema='information_schema' limit 2;
 show tables from information_schema like "T%";
 
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 create database information_schema;
 use information_schema;
 show full tables like "T%";
---error 1109
+--error ER_UNKNOWN_TABLE
 create table t1(a int);
 use test;
 show tables;
@@ -359,15 +361,15 @@ use information_schema;
 show tables like "T%";
 
 #
-# Bug#7210: information_schema: can't access when table-name = reserved word
+# Bug#7210 information_schema: can't access when table-name = reserved word
 #
 select table_name from tables where table_name='user';
 select column_name, privileges from columns
 where table_name='user' and column_name like '%o%';
 
 #
-# Bug#7212: information_schema: "Can't find file" errors if storage engine gone
-# Bug#7211: information_schema: crash if bad view
+# Bug#7212 information_schema: "Can't find file" errors if storage engine gone
+# Bug#7211 information_schema: crash if bad view
 #
 use test;
 create function sub1(i int) returns int
@@ -394,9 +396,9 @@ drop view v3;
 drop table t4;
 
 #
-# Bug#7213: information_schema: redundant non-standard TABLE_NAMES table
+# Bug#7213 information_schema: redundant non-standard TABLE_NAMES table
 #
---error 1109
+--error ER_UNKNOWN_TABLE
 select * from information_schema.table_names;
 
 #
@@ -422,14 +424,14 @@ show status where variable_name like "%database%";
 show variables where variable_name like "skip_show_databas";
 
 #
-# Bug #7981:SHOW GLOBAL STATUS crashes server
+# Bug#7981 SHOW GLOBAL STATUS crashes server
 #
 # We don't actually care about the value, just that it doesn't crash.
 --replace_column 2 #
 show global status like "Threads_running";
 
 #
-# Bug #7915  crash,JOIN VIEW, subquery, 
+# Bug#7915 crash,JOIN VIEW, subquery,
 # SELECT .. FROM INFORMATION_SCHEMA.COLUMNS
 #
 create table t1(f1 int);
@@ -440,7 +442,7 @@ drop view v1;
 drop table t1, t2;
 
 #
-# Bug #7476: crash on SELECT * FROM INFORMATION_SCHEMA.TABLES
+# Bug#7476 crash on SELECT * FROM INFORMATION_SCHEMA.TABLES
 #
 
 CREATE TABLE t_crashme ( f1 BIGINT);
@@ -468,8 +470,8 @@ drop view a2, a1;
 drop table t_crashme;
 
 #
-# Bug #7215  information_schema: columns are longtext instead of varchar
-# Bug #7217  information_schema: columns are varbinary() instead of timestamp
+# Bug#7215 information_schema: columns are longtext instead of varchar
+# Bug#7217 information_schema: columns are varbinary() instead of timestamp
 #
 select table_schema,table_name, column_name from
 information_schema.columns
@@ -478,7 +480,7 @@ select table_name, column_name, data_type from information_schema.columns
 where data_type = 'datetime';
 
 #
-# Bug #8164  subquery with INFORMATION_SCHEMA.COLUMNS, 100 % CPU
+# Bug#8164 subquery with INFORMATION_SCHEMA.COLUMNS, 100 % CPU
 #
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES A
 WHERE NOT EXISTS
@@ -487,7 +489,7 @@ WHERE NOT EXISTS
   AND A.TABLE_NAME = B.TABLE_NAME);
 
 #
-# Bug #9344  INFORMATION_SCHEMA, wrong content, numeric columns
+# Bug#9344 INFORMATION_SCHEMA, wrong content, numeric columns
 #
 
 create table t1
@@ -514,12 +516,13 @@ connection user10261;
 SELECT TABLE_NAME, COLUMN_NAME, PRIVILEGES FROM INFORMATION_SCHEMA.COLUMNS
 where COLUMN_NAME='TABLE_NAME';
 connection default;
+disconnect user10261;
 delete from mysql.user where user='mysqltest_4';
 delete from mysql.db where user='mysqltest_4';
 flush privileges;
 
 #
-# Bug #9404  information_schema: Weird error messages
+# Bug#9404 information_schema: Weird error messages
 # with SELECT SUM() ... GROUP BY queries
 #
 SELECT table_schema, count(*) FROM information_schema.TABLES GROUP BY TABLE_SCHEMA;
@@ -560,7 +563,7 @@ drop table t1;
 
 
 #
-# Bug #10964  Information Schema:Authorization check on privilege tables is improper
+# Bug#10964 Information Schema:Authorization check on privilege tables is improper
 #
 
 create database mysqltest;
@@ -604,12 +607,16 @@ select * from information_schema.user_privileges where grantee like '%user%'
 order by grantee;
 show grants;
 connection default;
+disconnect con1;
+disconnect con2;
+disconnect con3;
+disconnect con4;
 drop user user1@localhost, user2@localhost, user3@localhost, user4@localhost;
 use test;
 drop database mysqltest;
 
 #
-# Bug #11055 information_schema: routines.sql_data_access has wrong value
+# Bug#11055 information_schema: routines.sql_data_access has wrong value
 #
 --disable_warnings
 drop procedure if exists p1;
@@ -624,13 +631,13 @@ drop procedure p1;
 drop procedure p2;
 
 #
-# Bug #9434 SHOW CREATE DATABASE information_schema;
+# Bug#9434 SHOW CREATE DATABASE information_schema;
 #
 show create database information_schema;
 
 #
-# Bug #11057 information_schema: columns table has some questionable contents
-# Bug #12301 information_schema: NUMERIC_SCALE must be 0 for integer columns
+# Bug#11057 information_schema: columns table has some questionable contents
+# Bug#12301 information_schema: NUMERIC_SCALE must be 0 for integer columns
 #
 create table t1(f1 LONGBLOB, f2 LONGTEXT);
 select column_name,data_type,CHARACTER_OCTET_LENGTH,
@@ -646,7 +653,7 @@ where table_name='t1';
 drop table t1;
 
 #
-# Bug #12127 triggers do not show in info_schema before they are used if set to the database
+# Bug#12127 triggers do not show in info_schema before they are used if set to the database
 #
 create table t1 (f1 integer);
 create trigger tr1 after insert on t1 for each row set @test_var=42;
@@ -668,7 +675,7 @@ show columns from t1;
 drop table t1;
 
 #
-# Bug #12636: SHOW TABLE STATUS with where condition containing a subquery
+# Bug#12636 SHOW TABLE STATUS with where condition containing a subquery
 #             over information schema
 #
 
@@ -683,7 +690,7 @@ SHOW TABLE STATUS FROM test
 DROP TABLE t1,t2;
 
 #
-# Bug #12905 show fields from view behaving erratically with current database
+# Bug#12905 show fields from view behaving erratically with current database
 #
 create table t1(f1 int);
 create view v1 (c) as select f1 from t1;
@@ -691,28 +698,29 @@ connect (con5,localhost,root,,*NO-ONE*);
 select database();
 show fields from test.v1;
 connection default;
+disconnect con5;
 drop view v1;
 drop table t1;
 
 #
-# Bug #9846 Inappropriate error displayed while dropping table from 'INFORMATION_SCHEMA'
+# Bug#9846 Inappropriate error displayed while dropping table from 'INFORMATION_SCHEMA'
 #
 --error ER_PARSE_ERROR
 alter database information_schema;
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 drop database information_schema;
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 drop table information_schema.tables;
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 alter table information_schema.tables;
 #
-# Bug #9683 INFORMATION_SCH: Creation of temporary table allowed in Information_schema DB
+# Bug#9683 INFORMATION_SCH: Creation of temporary table allowed in Information_schema DB
 #
 use information_schema;
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 create temporary table schemata(f1 char(10));
 #
-# Bug #10708 SP's can use INFORMATION_SCHEMA as ROUTINE_SCHEMA
+# Bug#10708 SP's can use INFORMATION_SCHEMA as ROUTINE_SCHEMA
 #
 delimiter |;
 --error ER_BAD_DB_ERROR
@@ -723,11 +731,11 @@ END |
 delimiter ;|
 select  ROUTINE_NAME from routines;
 #
-# Bug #10734 Grant of privileges other than 'select' and 'create view' should fail on schema
+# Bug#10734 Grant of privileges other than 'select' and 'create view' should fail on schema
 #
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 grant all on information_schema.* to 'user1'@'localhost';
---error 1044
+--error ER_DBACCESS_DENIED_ERROR
 grant select on information_schema.* to 'user1'@'localhost';
 
 #
@@ -753,9 +761,9 @@ where table_name="v1";
 drop view v1;
 
 #
-# Bug #14387 SHOW COLUMNS doesn't work on temporary tables
-# Bug #15224 SHOW INDEX from temporary table doesn't work
-# Bug #12770 DESC cannot display the info. about temporary table
+# Bug#14387 SHOW COLUMNS doesn't work on temporary tables
+# Bug#15224 SHOW INDEX from temporary table doesn't work
+# Bug#12770 DESC cannot display the info. about temporary table
 #
 create temporary table t1(f1 int, index(f1));
 show columns from t1;
@@ -839,6 +847,7 @@ connection con16681;
 select * from information_schema.views
 where table_name='v1' or table_name='v2';
 connection default;
+disconnect con16681;
 drop view v1, v2;
 drop table t1;
 drop user mysqltest_1@localhost;
@@ -855,7 +864,7 @@ drop table t1,t2;
 
 
 #
-# Bug#20230: routine_definition is not null
+# Bug#20230 routine_definition is not null
 #
 --disable_warnings
 DROP PROCEDURE IF EXISTS p1;
@@ -888,7 +897,7 @@ DROP PROCEDURE p1;
 DROP USER mysql_bug20230@localhost;
 
 #
-# Bug#18925: subqueries with MIN/MAX functions on INFORMARTION_SCHEMA 
+# Bug#18925 subqueries with MIN/MAX functions on INFORMARTION_SCHEMA
 #
 
 SELECT t.table_name, c1.column_name
@@ -921,7 +930,7 @@ SELECT t.table_name, c1.column_name
         );
 
 #
-# Bug#21231: query with a simple non-correlated subquery over
+# Bug#2123 query with a simple non-correlated subquery over
 #          INFORMARTION_SCHEMA.TABLES
 #
 
@@ -931,7 +940,7 @@ SELECT table_name from information_schema.tables
                       FROM information_schema.tables);
 
 #
-# Bug #23037: Bug in field "Default" of query "SHOW COLUMNS FROM table"
+# Bug#23037 Bug in field "Default" of query "SHOW COLUMNS FROM table"
 #
 # Note, MyISAM/InnoDB can't take more that 65532 chars, because the row
 # size is limited to 65535 bytes (BLOBs not counted)
@@ -975,7 +984,7 @@ DROP FUNCTION get_value;
 
 
 #
-# Bug#22413: EXPLAIN SELECT FROM view with ORDER BY yield server crash
+# Bug#22413 EXPLAIN SELECT FROM view with ORDER BY yield server crash
 #
 create view v1 as
 select table_schema as object_schema,
@@ -1068,6 +1077,7 @@ show triggers;
 select trigger_name from information_schema.triggers
 where event_object_table='t1';
 connection default;
+disconnect con27629;
 drop user mysqltest_1@localhost;
 drop database mysqltest;
 
@@ -1111,13 +1121,13 @@ select * from `information_schema`.`VIEWS` where `TABLE_NAME` = NULL;
 #
 # Bug#30079 A check for "hidden" I_S tables is flawed
 #
---error 1109
+--error ER_UNKNOWN_TABLE
 show fields from information_schema.table_names;
---error 1109
+--error ER_UNKNOWN_TABLE
 show keys from information_schema.table_names;
 
 #
-# Bug#34529: Crash on complex Falcon I_S select after ALTER .. PARTITION BY
+# Bug#34529 Crash on complex Falcon I_S select after ALTER .. PARTITION BY
 #
 USE information_schema;
 SET max_heap_table_size = 16384;

mysql-test/t/multi_update.test

@@ -379,6 +379,9 @@ revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
 revoke all privileges on mysqltest.* from mysqltest_1@localhost;
 delete from mysql.user where user=_binary'mysqltest_1';
 drop database mysqltest;
+connection default;
+disconnect user1;
+disconnect root;
 
 #
 # multi delete wrong table check
@@ -401,7 +404,7 @@ update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
 delete t1 from t1,t2 where t1.col1 < (select max(col1) from t1) and t1.col1 = t2.col1;
 drop table t1,t2;
 
-# Test for BUG#5837 - delete with outer join and const tables
+# Test for Bug#5837 delete with outer join and const tables
 --disable_warnings
 create table t1 (
   aclid bigint not null primary key,
@@ -418,7 +421,7 @@ delete t2, t1 from t2 left join t1 on (t2.aclid=t1.aclid) where t2.refid='1';
 drop table t1, t2;
 
 #
-# Bug#19225: unchecked error leads to server crash
+# Bug#19225 unchecked error leads to server crash
 #
 create table t1(a int);
 create table t2(a int);
@@ -428,7 +431,7 @@ drop table t1, t2;
 # End of 4.1 tests
 
 #
-# Test for bug #1980.
+# Test for Bug#1980.
 #
 --disable_warnings
 create table t1 ( c char(8) not null ) engine=innodb;
@@ -484,9 +487,12 @@ send alter table t1 add column c int default 100 after a;
 
 connect (updater,localhost,root,,test);
 connection updater;
+# Wait till "alter table t1 ..." is in work.
+sleep 2;
 send update t1, v1 set t1.b=t1.a+t1.b+v1.b where t1.a=v1.a;
 
 connection locker;
+# Wait till "update t1, v1 ..." is in work.
 sleep 2;
 unlock tables;
 
@@ -500,6 +506,12 @@ select * from t2;
 drop view v1;
 drop table t1, t2;
 
+connection default;
+disconnect locker;
+disconnect changer;
+disconnect updater;
+
+
 #
 # Bug#27716 multi-update did partially and has not binlogged
 #
@@ -536,11 +548,12 @@ reset master;
 UPDATE t2,t1  SET t2.a=t2.b where t2.a=t1.a;
 show master status /* there must be the UPDATE query event */;
 
-# cleanup bug#27716
+# cleanup
 drop table t1, t2;
 
+
 #
-# Bug #29136  	erred multi-delete on trans table does not rollback 
+# Bug#29136 erred multi-delete on trans table does not rollback
 #
 
 # prepare
@@ -569,7 +582,7 @@ select count(*) from t3 /* must be 1 */;
 # the query must be in binlog (no surprise though)
 source include/show_binlog_events.inc;
 
-# cleanup bug#29136
+# cleanup
 drop table t1, t2, t3;
 
 

mysql-test/t/overflow.test

+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 connect (con1,localhost,root,,);
 connection con1;
--- error 1064,1102,1280
+--error ER_PARSE_ERROR,ER_WRONG_DB_NAME,ER_WRONG_NAME_FOR_INDEX
 drop database AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;
+connection default;
+disconnect con1;
 
 # End of 4.1 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/packet.test

@@ -4,12 +4,18 @@
 # swallowing them and returning an error
 --source include/not_windows.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 #
 # Check protocol handling
 #
 
-connect (con1,localhost,root,,);
+set @max_allowed_packet=@@global.max_allowed_packet;
+set @net_buffer_length=@@global.net_buffer_length;
 
+connect (con1,localhost,root,,);
 connection con1;
 set global max_allowed_packet=100;
 set max_allowed_packet=100;
@@ -19,6 +25,8 @@ set net_buffer_length=100;
 SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
 # Should return NULL as 2000 is bigger than max_allowed_packet
 select repeat('a',2000);
+connection default;
+disconnect con1;
 
 #
 # Connection 2 should get error for too big packets
@@ -26,7 +34,7 @@ select repeat('a',2000);
 connect (con2,localhost,root,,);
 connection con2;
 select @@net_buffer_length, @@max_allowed_packet;
---error 1153
+--error ER_NET_PACKET_TOO_LARGE
 SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
 set global max_allowed_packet=default;
 set max_allowed_packet=default;
@@ -34,5 +42,13 @@ set global net_buffer_length=default;
 set net_buffer_length=default;
 SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
 select length(repeat('a',2000));
+connection default;
+disconnect con2;
+
+set global max_allowed_packet=@max_allowed_packet;
+set global net_buffer_length=@net_buffer_length;
 
 # End of 4.1 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/query_cache_notembedded.test

 -- source include/have_query_cache.inc
 -- source include/not_embedded.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
+
 #
 # Tests with query cache
 #
@@ -79,7 +83,7 @@ show status like "Qcache_free_blocks";
 drop table t1, t2, t3, t11, t21;
 
 #
-# do not use QC if tables locked (BUG#12385)
+# do not use QC if tables locked (Bug#12385)
 #
 connect (root,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK);
 connection root;
@@ -96,10 +100,13 @@ SELECT * FROM t1;
 connection root;
 SELECT * FROM t1;
 drop table t1;
+connection default;
+disconnect root;
+disconnect root2;
 
 #
-# query in QC from normal execution and SP (BUG#6897)
-# improved to also test BUG#3583 and BUG#12990
+# query in QC from normal execution and SP (Bug#6897)
+# improved to also test Bug#3583 and Bug#12990
 #
 flush query cache;
 reset query cache;
@@ -181,7 +188,7 @@ drop procedure f4;
 drop table t1;
 
 #
-# bug#14767: INSERT in SF + concurrent SELECT with query cache
+# Bug#14767 INSERT in SF + concurrent SELECT with query cache
 #
 reset query cache;
 --disable_warnings
@@ -223,4 +230,36 @@ connection default;
 
 set GLOBAL query_cache_size=0;
 
+#
+# Bug#40264: Aborted cached query causes query to hang indefinitely on next cache hit
+#
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+FLUSH STATUS;
+SET GLOBAL query_cache_size=1048576;
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
+SHOW STATUS LIKE 'Qcache_queries_in_cache';
+LOCK TABLES t1 WRITE;
+connect(con1,localhost,root,,);
+--send SELECT * FROM t1
+connection default;
+let $show_type= open tables where `table`='t1' and in_use=2;
+let $show_pattern= '%t1%2%';
+--source include/wait_show_pattern.inc
+dirty_close con1;
+UNLOCK TABLES;
+let $show_type= open tables where `table`='t1' and in_use=0;
+let $show_pattern= '%t1%0%';
+--source include/wait_show_pattern.inc
+SHOW STATUS LIKE 'Qcache_queries_in_cache';
+DROP TABLE t1;
+SET GLOBAL query_cache_size= default;
+
 # End of 5.0 tests
+
+# Wait till we reached the initial number of concurrent sessions
+#--source include/wait_until_count_sessions.inc

mysql-test/t/sp-threads.test

@@ -5,6 +5,9 @@
 # except security/privilege tests, they go to sp-security.test
 #
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 connect (con1root,localhost,root,,);
 connect (con2root,localhost,root,,);
 connect (con3root,localhost,root,,);
@@ -58,7 +61,7 @@ drop procedure bug4934;
 
 
 #
-# BUG #9486 "Can't perform multi-update in stored procedure"
+# Bug#9486 Can't perform multi-update in stored procedure
 #
 --disable_warnings
 drop procedure if exists bug9486;
@@ -87,8 +90,9 @@ reap;
 drop procedure bug9486;
 drop table t1, t2;
 
+
 #
-# BUG#11158: Can't perform multi-delete in stored procedure
+# Bug#11158 Can't perform multi-delete in stored procedure
 #
 --disable_warnings
 drop procedure if exists bug11158;
@@ -114,8 +118,9 @@ connection con1root;
 drop procedure bug11158;
 drop table t1, t2;
 
+
 #
-# BUG#11554: Server crashes on statement indirectly using non-cached function
+# Bug#11554 Server crashes on statement indirectly using non-cached function
 #
 --disable_warnings
 drop function if exists bug11554;
@@ -134,7 +139,7 @@ drop table t1;
 drop view v1;
 
 
-# BUG#12228 
+# Bug#12228 Crash happens during calling specific SP in multithread environment
 --disable_warnings
 drop procedure if exists p1;
 drop procedure if exists p2;
@@ -168,18 +173,26 @@ connection con2root;
 unlock tables;
 
 connection con1root;
-# Crash will be here if we hit BUG#12228 
+# Crash will be here if we hit Bug#12228
 reap;
 
 drop procedure p1;
 drop procedure p2;
 drop table t1;
 
+
 #
-# BUG#NNNN: New bug synopsis
+# Bug#NNNN New bug synopsis
 #
 #--disable_warnings
 #drop procedure if exists bugNNNN;
 #--enable_warnings
 #create procedure bugNNNN...
 
+connection default;
+disconnect con1root;
+disconnect con2root;
+disconnect con3root;
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/subselect.test

@@ -1035,8 +1035,9 @@ INSERT INTO t1 VALUES (1),(1),(1),(1),(1),(2),(3),(4),(5);
 SELECT DISTINCT (SELECT a) FROM t1 LIMIT 100;
 DROP TABLE t1;
 
+
 #
-# Bug 2198
+# Bug#2198 SELECT INTO OUTFILE (with Sub-Select) Problem
 #
 
 create table t1 (a int, b decimal(13, 3));
@@ -1051,8 +1052,9 @@ load data infile "subselect.out.file.1" into table t1;
 select * from t1;
 drop table t1;
 
+
 #
-# Bug 2479
+# Bug#2479 dependant subquery with limit crash
 #
 
 CREATE TABLE `t1` (
@@ -1090,8 +1092,9 @@ select 2 in (select * from t1);
 SET SQL_SELECT_LIMIT=default;
 drop table t1;
 
+
 #
-# Bug #3118: subselect + order by
+# Bug#3118 subselect + order by
 #
 
 CREATE TABLE t1 (a int, b int, INDEX (a));
@@ -1130,8 +1133,9 @@ insert into t1 values (1);
 explain select benchmark(1000, (select a from t1 where a=sha(rand())));
 drop table t1;
 
+
 #
-# bug 3188
+# Bug#3188 Ambiguous Column in Subselect crashes server
 #
 create table t1(id int);
 create table t2(id int);
@@ -1140,8 +1144,9 @@ create table t3(flag int);
 select (select * from t3 where id not null) from t1, t2;
 drop table t1,t2,t3;
 
+
 #
-# aggregate functions (Bug #3505)
+# aggregate functions (Bug#3505 Wrong results on use of ORDER BY with subqueries)
 #
 CREATE TABLE t1 (id INT);
 CREATE TABLE t2 (id INT);
@@ -1332,8 +1337,9 @@ select * from t1 up where exists (select * from t1 where t1.a=up.a);
 explain extended select * from t1 up where exists (select * from t1 where t1.a=up.a);
 drop table t1;
 
+
 #
-# Bug #4102: subselect in HAVING
+# Bug#4102 subselect in HAVING
 #
 
 CREATE TABLE t1 (t1_a int);
@@ -1344,8 +1350,10 @@ SELECT * FROM t1, t2 table2 WHERE t1_a = 1 AND table2.t2_a = 1
   HAVING table2.t2_b = (SELECT MAX(t2_b) FROM t2 WHERE t2_a = table2.t2_a);
 DROP TABLE t1, t2;
 
+
 #
-# Test problem with NULL and derived tables (Bug #4097)
+# Test problem with NULL and derived tables
+# (Bug#4097 JOIN with subquery causes entire column to report NULL)
 #
 
 CREATE TABLE t1 (id int(11) default NULL,name varchar(10) default NULL);
@@ -1355,6 +1363,7 @@ INSERT INTO t2 VALUES (1,'Fido'),(2,'Spot'),(3,'Felix');
 SELECT a.*, b.* FROM (SELECT * FROM t1) AS a JOIN t2 as b on a.id=b.id;
 drop table t1,t2;
 
+
 #
 # outer fields resolving in INSERT/REPLACE and CRETE with SELECT
 #
@@ -1390,8 +1399,9 @@ insert into t2 values (1,2);
 select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1);
 drop table t1,t2;
 
+
 #
-# BUG#4769 - fulltext in subselect
+# Bug#4769 - fulltext in subselect
 #
 create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b));
 insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'), ('Patrik'),('Hakan');
@@ -1401,8 +1411,9 @@ select a,b from t1 where match(b) against ('Ball') > 0;
 select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0);
 drop table t1,t2;
 
+
 #
-# BUG#5003 - like in subselect
+# Bug#5003 - like in subselect
 #
 CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin);
 CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel);
@@ -1459,10 +1470,10 @@ SELECT b.sc FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.s
 SELECT b.ac FROM (SELECT (SELECT a.access FROM t1 a WHERE a.map = op.map AND a.slave = op.pid AND a.master = 1) ac FROM t2 op WHERE op.id = 12 AND op.map = 0) b;
 drop tables t1,t2;
 
+
 #
-# Test for bug #6462. "Same request on same data returns different
-# results." a.k.a. "Proper cleanup of subqueries is missing for 
-# SET and DO statements".
+# Test for Bug#6462 Same request on same data returns different results
+# a.k.a. "Proper cleanup of subqueries is missing for SET and DO statements".
 #
 create table t1 (a int not null, b int not null, c int, primary key (a,b));
 insert into t1 values (1,1,1), (2,2,2), (3,3,3);
@@ -1484,9 +1495,11 @@ drop table t1;
 connect (root,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK);
 connection root;
 set @got_val= (SELECT 1 FROM (SELECT 'A' as my_col) as T1 ) ;
+connection default;
+disconnect root;
 
 #
-# primary query with temporary table and subquery with groupping
+# primary query with temporary table and subquery with grouping
 #
 create table t1 (a int, b int);
 create table t2 (a int, b int);
@@ -1552,8 +1565,9 @@ SELECT DISTINCT Continent AS c FROM t1 outr WHERE
   Population < 200);
 drop table t1;
 
+
 #
-# Test for BUG#7885: Server crash when 'any' subselect compared to
+# Test for Bug#7885 Server crash when 'any' subselect compared to
 #                   non-existant field.
 #
 create table t1 (a1 int);
@@ -1603,8 +1617,9 @@ select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx;
 select 1 = ALL (select 1 from t1 where 1 = xx ), 1 as xx from DUAL;
 drop table t1;
 
+
 #
-# Test for BUG#8218
+# Test for Bug#8218 Join does not pass string from right table
 #
 CREATE TABLE t1 (
   categoryId int(11) NOT NULL,
@@ -1704,8 +1719,9 @@ group by
 
 drop table t1, t2, t3, t4, t5;
 
+
 #
-# Transformation in left expression of subquery (BUG#8888)
+# Transformation in left expression of subquery (Bug#8888)
 #
 create table t1 (a int);
 insert into t1 values (1), (2), (3);
@@ -1750,8 +1766,9 @@ select (1,2,3) = (select * from t1);
 select (select * from t1) = (1,2,3);
 drop table t1;
 
+
 #
-# Item_int_with_ref check (BUG#10020)
+# Item_int_with_ref check (Bug#10020)
 #
 CREATE TABLE `t1` (
   `itemid` bigint(20) unsigned NOT NULL auto_increment,
@@ -1774,15 +1791,16 @@ INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1');
 SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30;
 drop tables t1,t2;
 
-# BUG#11821 : Select from subselect using aggregate function on an enum
-# segfaults:
+
+# Bug#11821 Select from subselect using aggregate function on an enum segfaults
 create table t1 (fld enum('0','1'));
 insert into t1 values ('1');
 select * from (select max(fld) from t1) as foo;
 drop table t1;
 
+
 #
-# Bug #11867: queries with ROW(,elems>) IN (SELECT DISTINCT <cols> FROM ...)
+# Bug#11867 queries with ROW(,elems>) IN (SELECT DISTINCT <cols> FROM ...)
 #
 
 CREATE TABLE t1 (one int, two int, flag char(1));
@@ -1812,8 +1830,9 @@ explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FR
 explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
 DROP TABLE t1,t2;
 
+
 #
-# Bug #12392: where cond with IN predicate for rows and NULL values in table 
+# Bug#12392 where cond with IN predicate for rows and NULL values in table
 #
 
 CREATE TABLE t1 (a char(5), b char(5));
@@ -1823,8 +1842,9 @@ SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb'));
 
 DROP TABLE t1;
 
+
 #
-# Bug #11479: subquery over left join with an empty inner table 
+# Bug#11479 subquery over left join with an empty inner table
 #
 
 CREATE TABLE t1 (a int);
@@ -1841,8 +1861,9 @@ SELECT * FROM t1
 
 DROP TABLE t1,t2,t3;
 
+
 #
-# Bug#18503: Queries with a quantified subquery returning empty set may
+# Bug#18503 Queries with a quantified subquery returning empty set may
 #           return a wrong result.
 #
 CREATE TABLE t1 (f1 INT);
@@ -1855,8 +1876,9 @@ INSERT INTO t2 VALUES (2);
 SELECT * FROM t1 WHERE f1 > ALL (SELECT f2 FROM t2 WHERE f2=0);
 DROP TABLE t1, t2;
 
+
 #
-# Bug#16302: Quantified subquery without any tables gives wrong results
+# Bug#16302 Quantified subquery without any tables gives wrong results
 #
 select 1 from dual where 1 < any (select 2);
 select 1 from dual where 1 < all (select 2);
@@ -1865,7 +1887,8 @@ select 1 from dual where 2 > all (select 1);
 select 1 from dual where 1 < any (select 2 from dual);
 select 1 from dual where 1 < all (select 2 from dual where 1!=1);
 
-# BUG#20975 Wrong query results for subqueries within NOT
+
+# Bug#20975 Wrong query results for subqueries within NOT
 create table t1 (s1 char);
 insert into t1 values (1),(2);
 
@@ -1882,8 +1905,9 @@ select * from t1 where (s1 = ALL (select s1/s1 from t1));
 select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));
 drop table t1;
 
+
 #
-# Bug #16255: Subquery in where
+# Bug#16255 Subquery in where
 #
 create table t1 (
   retailerID varchar(8) NOT NULL,
@@ -1905,8 +1929,9 @@ select * from t1 r1
           group by r2.retailerId);
 drop table t1;
 
+
 #
-# Bug #21180: Subselect with index for both WHERE and ORDER BY 
+# Bug#21180 Subselect with index for both WHERE and ORDER BY
 #           produces empty result
 #
 create table t1(a int, primary key (a));
@@ -1931,8 +1956,9 @@ SELECT sql_no_cache t1.a, r.a, r.b FROM t1 LEFT JOIN t2 r
 
 drop table t1,t2;
 
+
 #
-# Bug #21853: assert failure for a grouping query with
+# Bug#21853 assert failure for a grouping query with
 #           an ALL/ANY quantified subquery in HAVING
 #
 
@@ -1968,8 +1994,9 @@ SELECT field1, field2
 
 DROP TABLE t1, t2;
 
+
 #
-# Bug #23478: not top-level IN subquery returning a non-empty result set
+# Bug#23478 not top-level IN subquery returning a non-empty result set
 #           with possible NULL values by index access from the outer query
 #
 
@@ -1985,8 +2012,9 @@ SELECT a, a IN (SELECT a FROM t1) FROM t2;
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #11302: getObject() returns a String for a sub-query of type datetime
+# Bug#11302 getObject() returns a String for a sub-query of type datetime
 #
 CREATE TABLE t1 (a DATETIME);
 INSERT INTO t1 VALUES ('1998-09-23'), ('2003-03-25');
@@ -2001,8 +2029,9 @@ SHOW CREATE TABLE t3;
 
 DROP TABLE t1,t2,t3;
 
+
 #
-# Bug 24670: subquery witout tables but with a WHERE clause
+# Bug24670 subquery witout tables but with a WHERE clause
 #
 
 CREATE TABLE t1 (a int);
@@ -2014,8 +2043,9 @@ EXPLAIN SELECT a FROM t1 WHERE (SELECT 1 FROM DUAL WHERE 1=0) IS NULL;
 
 DROP TABLE t1;
 
+
 #
-# Bug 24653: sorting by expressions containing subselects
+# Bug#24653 sorting by expressions containing subselects
 #           that return more than one row
 #
 
@@ -2099,8 +2129,9 @@ select * from t1;
 select min(a) from t1 group by grp;
 drop table t1;
 
+
 #
-# Test for bug #9338: lame substitution of c1 instead of c2 
+# Test for Bug#9338 lame substitution of c1 instead of c2
 #
 
 CREATE table t1 ( c1 integer );
@@ -2120,8 +2151,9 @@ SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2
 
 DROP TABLE t1,t2;
 
+
 #
-# Test for bug #9516: wrong evaluation of not_null_tables attribute in SQ 
+# Test for Bug#9516 wrong evaluation of not_null_tables attribute in SQ
 #
 CREATE TABLE t1 ( c1 integer );
 INSERT INTO t1 VALUES ( 1 );
@@ -2144,8 +2176,9 @@ SELECT c1,c2 FROM t1 LEFT JOIN t2 ON c1 = c2
 
 DROP TABLE t1,t2,t3;
 
+
 #
-# Item_int_with_ref check (BUG#10020)
+# Item_int_with_ref check (Bug#10020)
 #
 CREATE TABLE `t1` (
   `itemid` bigint(20) unsigned NOT NULL auto_increment,
@@ -2168,9 +2201,10 @@ INSERT INTO `t2` VALUES (1, 1, 1, '10.10.10.1');
 SELECT s.ip, count( e.itemid ) FROM `t1` e JOIN t2 s ON s.sessionid = e.sessionid WHERE e.sessionid = ( SELECT sessionid FROM t2 ORDER BY sessionid DESC LIMIT 1 ) GROUP BY s.ip HAVING count( e.itemid ) >0 LIMIT 0 , 30;
 drop tables t1,t2;
 
+
 #
 # Correct building of equal fields list (do not include outer
-# fields) (BUG#6384)
+# fields) (Bug#6384)
 #
 CREATE TABLE t1 (EMPNUM   CHAR(3));
 CREATE TABLE t2 (EMPNUM   CHAR(3) );
@@ -2184,8 +2218,9 @@ WHERE t1.EMPNUM NOT IN
 select * from t1;
 DROP TABLE t1,t2;
 
+
 #
-# Test for bug #11487: range access in a subquery
+# Test for Bug#11487 range access in a subquery
 #
 
 CREATE TABLE t1(select_id BIGINT, values_id BIGINT);
@@ -2206,15 +2241,16 @@ WHERE values_id IN (SELECT values_id FROM t2
 
 DROP TABLE t1, t2;
 
-# BUG#11821 : Select from subselect using aggregate function on an enum
-# segfaults:
+
+# Bug#11821 Select from subselect using aggregate function on an enum segfaults
 create table t1 (fld enum('0','1'));
 insert into t1 values ('1');
 select * from (select max(fld) from t1) as foo;
 drop table t1;
 
+
 #
-# Test for bug #11762: subquery with an aggregate function in HAVING
+# Test for Bug#11762 subquery with an aggregate function in HAVING
 #
 
 CREATE TABLE t1 (a int, b int);
@@ -2297,8 +2333,9 @@ SELECT t1.a, SUM(b) AS sum  FROM t1 GROUP BY t1.a
 
 DROP TABLE t1,t2,t3;
 
+
 #
-# Test for bug #16603: GROUP BY in a row subquery with a quantifier 
+# Test for Bug#16603 GROUP BY in a row subquery with a quantifier
 #                    when an index is defined on the grouping field
 
 CREATE TABLE t1 (a varchar(5), b varchar(10));
@@ -2318,16 +2355,18 @@ SELECT * FROM t1 WHERE (a,b) = ANY (SELECT a, max(b) FROM t1 GROUP BY a);
 
 DROP TABLE t1;
 
+
 #
-# Bug#17366: Unchecked Item_int results in server crash
+# Bug#17366 Unchecked Item_int results in server crash
 #
 create table t1( f1 int,f2 int);
 insert into t1 values (1,1),(2,2);
 select tt.t from (select 'crash1' as t, f2 from t1) as tt left join t1 on tt.t = 'crash2' and tt.f2 = t1.f2 where tt.t = 'crash1';
 drop table t1;
 
+
 #
-# Bug #18306: server crash on delete using subquery.
+# Bug#18306 server crash on delete using subquery.
 #
 
 create table t1 (c int, key(c));
@@ -2337,8 +2376,9 @@ insert into t2 values (2, 1), (1, 0);
 delete from t1 where c <= 1140006215 and (select b from t2 where a = 2) = 1;
 drop table t1, t2;
 
+
 #
-# Bug #7549: Missing error message for invalid view selection with subquery
+# Bug#7549 Missing error message for invalid view selection with subquery
 #
 
 CREATE TABLE t1 (a INT);
@@ -2352,16 +2392,18 @@ SELECT * FROM t1 WHERE no_such_column = ANY (SELECT 1);
 
 DROP TABLE t1;
 
+
 #
-# Bug#19077: A nested materialized derived table is used before being populated.
+# Bug#19077 A nested materialized derived table is used before being populated.
 #
 create table t1 (i int, j bigint);
 insert into t1 values (1, 2), (2, 2), (3, 2);
 select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3;
 drop table t1;
 
+
 #
-# Bug#19700: subselect returning BIGINT always returned it as SIGNED
+# Bug#19700 subselect returning BIGINT always returned it as SIGNED
 #
 CREATE TABLE t1 (i BIGINT UNSIGNED);
 INSERT INTO t1 VALUES (10000000000000000000); # > MAX SIGNED BIGINT 9323372036854775807
@@ -2383,8 +2425,9 @@ SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED);
 DROP TABLE t1;
 DROP TABLE t2;
 
+
 #
-# Bug#20519: subselect with LIMIT M, N
+# Bug#20519 subselect with LIMIT M, N
 #
 
 CREATE TABLE t1 (
@@ -2423,8 +2466,9 @@ SELECT *,
   FROM t1;
 DROP TABLE t1,t2;
 
+
 #
-# Bug#20869: subselect with range access by DESC
+# Bug#20869 subselect with range access by DESC
 #
 
 CREATE TABLE t1 (
@@ -2461,9 +2505,9 @@ SELECT * FROM t1,t2
 
 DROP TABLE t1, t2;
 
+
 #
-# Bug#14654 : Cannot select from the same table twice within a UNION
-# statement 
+# Bug#14654 Cannot select from the same table twice within a UNION statement
 #
 CREATE TABLE t1 (i INT);
 
@@ -2493,8 +2537,9 @@ explain select * from t1 where not exists
 
 DROP TABLE t1;
 
+
 #
-# Bug#21798: memory leak during query execution with subquery in column 
+# Bug#21798 memory leak during query execution with subquery in column
 #           list using a function
 #
 CREATE TABLE t1 (a VARCHAR(250), b INT auto_increment, PRIMARY KEY (b));
@@ -2519,8 +2564,9 @@ SELECT a,
 FROM t1 ORDER BY a LIMIT 5;
 DROP TABLE t1;
 
+
 #
-# Bug #21540: Subqueries with no from and aggregate functions return 
+# Bug#21540 Subqueries with no from and aggregate functions return
 #              wrong results
 CREATE TABLE t1 (a INT, b INT);
 CREATE TABLE t2 (a INT);
@@ -2550,8 +2596,9 @@ FROM t1 t2
 GROUP BY t2.a;
 DROP TABLE t1,t2;
 
+
 #
-# Bug #21727: Correlated subquery that requires filesort:
+# Bug#21727 Correlated subquery that requires filesort:
 #           slow with big sort_buffer_size
 #
 
@@ -2587,8 +2634,9 @@ SELECT SQL_NO_CACHE COUNT(*)
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #25219: EXIST subquery with UNION over a mix of
+# Bug#25219 EXIST subquery with UNION over a mix of
 #           correlated and uncorrelated selects
 #
 
@@ -2621,8 +2669,9 @@ SELECT * FROM t1
 
 DROP TABLE t1,t2,t3;
 
+
 #
-# Bug#23800: Outer fields in correlated subqueries is used in a temporary     
+# Bug#23800 Outer fields in correlated subqueries is used in a temporary
 #           table created for sorting.
 #
 CREATE TABLE t1(f1 int);
@@ -2649,6 +2698,7 @@ SELECT a, MAX(b),
   FROM t1 GROUP BY a;
 DROP TABLE t1;
 
+
 #
 # Bug#21904 (parser problem when using IN with a double "(())")
 #
@@ -2748,8 +2798,9 @@ DROP TABLE t1;
 DROP TABLE t2;
 DROP TABLE t1xt2;
 
+
 #
-# Bug #26728: derived table with concatanation of literals in select list
+# Bug#26728 derived table with concatanation of literals in select list
 #
 
 CREATE TABLE t1 (a int);
@@ -2760,8 +2811,9 @@ SELECT * FROM (SELECT 'this is ' 'a test.' AS col1, a AS t2 FROM t1) t;
 
 DROP table t1;
 
+
 #
-# Bug #27257: COUNT(*) aggregated in outer query
+# Bug#27257 COUNT(*) aggregated in outer query
 #
 
 CREATE TABLE t1 (a int, b int);
@@ -2783,8 +2835,9 @@ SELECT COUNT(*), a
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #27229: GROUP_CONCAT in subselect with COUNT() as an argument 
+# Bug#27229 GROUP_CONCAT in subselect with COUNT() as an argument
 #
 
 CREATE TABLE t1 (a int, b int);
@@ -2802,8 +2855,9 @@ SELECT COUNT(*) c, a,
 
 DROP table t1,t2;
 
+
 #
-# Bug#27321: Wrong subquery result in a grouping select
+# Bug#27321 Wrong subquery result in a grouping select
 #
 CREATE TABLE t1 (a int, b INT, d INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
 INSERT INTO t1 VALUES (1,1,0,'a'), (1,2,0,'b'), (1,3,0,'c'), (1,4,0,'d'),
@@ -2838,8 +2892,10 @@ SELECT tt.a, MAX(
   FROM t1 as tt GROUP BY tt.a;
 
 DROP TABLE t1;
+
+
 #
-# Bug #27348: SET FUNCTION used in  a subquery from WHERE condition 
+# Bug#27348 SET FUNCTION used in a subquery from WHERE condition
 #
 
 CREATE TABLE t1 (a int, b int);
@@ -2865,9 +2921,9 @@ SET @@sql_mode=default;
 
 DROP TABLE t1;
 
+
 #
-# Bug #27363: nested aggregates in outer, subquery / sum(select
-# count(outer))
+# Bug#27363 nested aggregates in outer, subquery / sum(select count(outer))
 #
 CREATE TABLE t1 (a INT); INSERT INTO t1 values (1),(1),(1),(1);
 CREATE TABLE t2 (x INT); INSERT INTO t1 values (1000),(1001),(1002);
@@ -2893,16 +2949,18 @@ FROM t1;
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #27807: Server crash when executing subquery with EXPLAIN
+# Bug#27807 Server crash when executing subquery with EXPLAIN
 #
 CREATE TABLE t1 (a int, b int, KEY (a));
 INSERT INTO t1 VALUES (1,1),(2,1);
 EXPLAIN SELECT 1 FROM t1 WHERE a = (SELECT COUNT(*) FROM t1 GROUP BY b);
 DROP TABLE t1;
 
+
 #
-# Bug #28377: grouping query with a correlated subquery in WHERE condition
+# Bug#28377 grouping query with a correlated subquery in WHERE condition
 #
 
 CREATE TABLE t1 (id int NOT NULL, st CHAR(2), INDEX idx(id));
@@ -2925,8 +2983,9 @@ SELECT id, st FROM t1
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #28728: crash with EXPLAIN EXTENDED for a query with a derived table
+# Bug#28728 crash with EXPLAIN EXTENDED for a query with a derived table
 #           over a grouping subselect
 #
 
@@ -2939,8 +2998,9 @@ SELECT * FROM (SELECT count(*) FROM t1 GROUP BY a) as res;
 
 DROP TABLE t1;
 
+
 #
-# Bug #28811: crash for query containing subquery with ORDER BY and LIMIT 1 
+# Bug#28811 crash for query containing subquery with ORDER BY and LIMIT 1
 #
 
 CREATE TABLE t1 (
@@ -2973,7 +3033,7 @@ DROP TABLE t1,t2;
 
 
 #
-# Bug #27333: subquery grouped for aggregate of outer query / no aggregate
+# Bug#27333 subquery grouped for aggregate of outer query / no aggregate
 #           of subquery
 #
 CREATE TABLE t1 (a INTEGER, b INTEGER);
@@ -3013,8 +3073,9 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1;
 SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
 DROP TABLE t1,t2;
 
+
 #
-# Bug31048: Many nested subqueries may cause server crash.
+# Bug31048 Many nested subqueries may cause server crash.
 #
 create table t1(a int,b int,key(a),key(b));
 insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5),
@@ -3059,8 +3120,9 @@ while ($nesting)
 --enable_query_log
 drop table t1;
 
+
 #
-# Bug #31884: Assertion + crash in subquery in the SELECT clause.
+# Bug#31884 Assertion + crash in subquery in the SELECT clause.
 #
 
 CREATE TABLE t1 (a1 INT, a2 INT);
@@ -3075,7 +3137,7 @@ SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1;
 DROP TABLE t1, t2;
 
 #
-# Bug #28076: inconsistent binary/varbinary comparison
+# Bug#28076 inconsistent binary/varbinary comparison
 #
 
 CREATE TABLE t1 (s1 BINARY(5), s2 VARBINARY(5));
@@ -3116,8 +3178,9 @@ SELECT LEFT(t1.a1,1) FROM t1,t3 WHERE t1.b1=t3.a3;
 SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3);
 DROP TABLE t1, t2, t3;
 
+
 #
-# Bug #30788: Inconsistent retrieval of char/varchar
+# Bug#30788 Inconsistent retrieval of char/varchar
 #
 
 CREATE TABLE t1 (a CHAR(1), b VARCHAR(10));
@@ -3141,9 +3204,9 @@ SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500);
 
 DROP TABLE t1,t2;
 
+
 #
-# Bug #32400: Complex SELECT query returns correct result only on some
-# occasions
+# Bug#32400 Complex SELECT query returns correct result only on some occasions
 #
 
 CREATE TABLE t1(a INT, b INT);
@@ -3171,8 +3234,9 @@ GROUP BY a;
 
 DROP TABLE t1;
 
+
 #
-# Bug #32036: EXISTS within a WHERE clause with a UNION crashes MySQL 5.122
+# Bug#32036 EXISTS within a WHERE clause with a UNION crashes MySQL 5.122
 #
 
 CREATE TABLE t1 (a INT);
@@ -3196,7 +3260,7 @@ DROP TABLE t1,t2;
 
 
 #
-# Bug#33675: Usage of an uninitialized memory by filesort in a subquery
+# Bug#33675 Usage of an uninitialized memory by filesort in a subquery
 #           caused server crash.
 #
 create table t1(f11 int, f12 int);
@@ -3218,8 +3282,9 @@ select count(*) from t1 where f12 =
 
 drop table t1,t2;
 
+
 #
-# BUG#33794 "MySQL crashes executing specific query on specific dump"
+# Bug#33794 "MySQL crashes executing specific query on specific dump"
 #
 CREATE TABLE t4 (
   f7 varchar(32) collate utf8_bin NOT NULL default '',
@@ -3272,8 +3337,9 @@ GROUP BY a4;
 
 DROP TABLE t1, t2, t3, t4;
 
+
 #
-# BUG#36139 "float, zerofill, crash with subquery"
+# Bug#36139 "float, zerofill, crash with subquery"
 #
 create table t1 (a float(5,4) zerofill);
 create table t2 (a float(5,4),b float(2,0));
@@ -3284,8 +3350,9 @@ select t1.a from t1 where
 
 drop table t1, t2;
 
+
 #
-# Bug #36011: Server crash with explain extended on query with dependent
+# Bug#36011 Server crash with explain extended on query with dependent
 #           subqueries
 #
 
@@ -3295,8 +3362,9 @@ EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 GROUP BY a);
 EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT 1 FROM t1 WHERE a > 3 GROUP BY a);
 DROP TABLE t1;
 
+
 #
-# Bug #38191: Server crash with subquery containing DISTINCT and ORDER BY
+# Bug#38191 Server crash with subquery containing DISTINCT and ORDER BY
 #
 
 CREATE TABLE t1(pk int PRIMARY KEY, a int, INDEX idx(a));
@@ -3307,6 +3375,7 @@ SELECT * FROM t1
    WHERE EXISTS (SELECT DISTINCT a FROM t2 WHERE t1.a < t2.a ORDER BY b);
 DROP TABLE t1,t2;
 
+
 #
 # Bug#20835 (literal string with =any values)
 #
@@ -3315,6 +3384,7 @@ INSERT INTO t1 VALUES ('a');
 SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1);
 DROP TABLE t1;
 
+
 #
 # Bug#40519 Subselect query using bigint fails
 #
@@ -3325,6 +3395,7 @@ INSERT INTO t2 VALUES (2,1),(3,1);
 SELECT * FROM t1 i WHERE 1 IN (SELECT l.id2 FROM t2 l WHERE i.id=l.id1);
 DROP TABLE t1, t2;
 
+
 #
 # Bug#37460 Assertion failed:
 # !table->file || table->file->inited == handler::NONE
@@ -3346,7 +3417,7 @@ CREATE VIEW v2 (a,b) AS
   SELECT t2.id, t2.c AS c FROM t1, t2
  WHERE t1.id=t2.id AND 1 IN (SELECT id FROM t1) WITH CHECK OPTION;
 
---error 1369
+--error ER_VIEW_CHECK_FAILED
 INSERT INTO v2(a,b) VALUES (2,2);
 INSERT INTO v2(a,b) VALUES (1,2);
 SELECT * FROM v1;

mysql-test/t/synchronization.test

+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 #
-# Test for Bug #2385 CREATE TABLE LIKE lacks locking on source and destination
+# Test for Bug#2385 CREATE TABLE LIKE lacks locking on source and destination
 #                   table
 #
 
 --disable_warnings
-drop table if exists t1;
+DROP TABLE IF EXISTS t1,t2;
 --enable_warnings
 
 connect (con1,localhost,root,,);
@@ -12,12 +15,12 @@ connect (con2,localhost,root,,);
 
 # locking of source:
 
-CREATE TABLE t1 (x1 int);
+CREATE TABLE t1 (x1 INT);
 let $1= 10;
 while ($1)
 {
   connection con1;
-    send ALTER TABLE t1 CHANGE x1 x2 int;
+    send ALTER TABLE t1 CHANGE x1 x2 INT;
   connection con2;
     CREATE TABLE t2 LIKE t1;
     replace_result x1 xx x2 xx;
@@ -25,7 +28,7 @@ while ($1)
     DROP TABLE t2;
   connection con1;
     reap;
-    send ALTER TABLE t1 CHANGE x2 x1 int;
+    send ALTER TABLE t1 CHANGE x2 x1 INT;
   connection con2;
     CREATE TABLE t2 LIKE t1;
     replace_result x1 xx x2 xx;
@@ -37,4 +40,11 @@ while ($1)
 }
 DROP TABLE t1;
 
+connection default;
+disconnect con1;
+disconnect con2;
+
 # End of 4.1 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc

mysql-test/t/timezone_grant.test

 # Embedded server testing does not support grants
 -- source include/not_embedded.inc
 
+# Save the initial number of concurrent sessions
+--source include/count_sessions.inc
+
 --disable_warnings
 drop tables if exists t1, t2;
 drop view if exists v1;
 --enable_warnings
 
 #
-# Test for bug #6116 "SET time_zone := ... requires access to mysql.time_zone
-# tables". We should allow implicit access to time zone description tables
-# even for unprivileged users.
+# Test for Bug#6116 SET time_zone := ... requires access to mysql.time_zone tables
+# We should allow implicit access to time zone description tables even for
+# unprivileged users.
 #
 
 # Let us prepare playground
@@ -33,15 +36,17 @@ select convert_tz(b, 'Europe/Moscow', 'UTC') from t1;
 update t1, t2 set t1.b = convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC')
               where t1.a = t2.c and t2.d = (select max(d) from t2);
 # But still these two statements should not work:
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 select * from mysql.time_zone_name;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 select Name, convert_tz('2004-10-21 19:00:00', Name, 'UTC') from mysql.time_zone_name;
 
+connection default;
+disconnect tzuser;
+
 #
-# Test for bug #6765 "Implicit access to time zone description tables
-# requires privileges for them if some table or column level grants
-# present"
+# Bug#6765 Implicit access to time zone description tables requires privileges
+#          for them if some table or column level grants present
 #
 connection default;
 # Let use some table-level grants instead of db-level
@@ -61,13 +66,13 @@ select convert_tz(b, 'Europe/Moscow', 'UTC') from t1;
 update t1, t2 set t1.b = convert_tz('2004-11-30 12:00:00', 'Europe/Moscow', 'UTC')
               where t1.a = t2.c and t2.d = (select max(d) from t2);
 # Again these two statements should not work (but with different errors):
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 select * from mysql.time_zone_name;
---error 1142
+--error ER_TABLEACCESS_DENIED_ERROR
 select Name, convert_tz('2004-11-30 12:00:00', Name, 'UTC') from mysql.time_zone_name;
 
 #
-# Bug #9979: Use of CONVERT_TZ in multiple-table UPDATE causes bogus
+# Bug#9979 Use of CONVERT_TZ in multiple-table UPDATE causes bogus
 #          privilege error
 #
 drop table t1, t2;
@@ -80,6 +85,7 @@ update t1 join t2 on (t1.a = t2.a) set t1.b = convert_tz('2005-01-01 10:00','UTC
 
 # Clean-up
 connection default;
+disconnect tzuser2;
 delete from mysql.user where user like 'mysqltest\_%';
 delete from mysql.db where user like 'mysqltest\_%';
 delete from mysql.tables_priv where user like 'mysqltest\_%';
@@ -89,8 +95,7 @@ drop table t1, t2;
 # End of 4.1 tests
 
 #
-# Additional test for bug #15153: CONVERT_TZ() is not allowed in all
-# places in views.
+# Additional test for Bug#15153 CONVERT_TZ() is not allowed in all places in views.
 #
 # Let us check that usage of CONVERT_TZ() function in view does not
 # require additional privileges.
@@ -109,7 +114,11 @@ drop view v1;
 --error ER_TABLEACCESS_DENIED_ERROR
 create view v1 as select a, convert_tz(b, 'UTC', 'Europe/Moscow') as lb from t1, mysql.time_zone;
 connection default;
+disconnect tzuser3;
 drop table t1;
 drop user mysqltest_1@localhost;
 
 # End of 5.0 tests
+
+# Wait till we reached the initial number of concurrent sessions
+--source include/wait_until_count_sessions.inc