path: root/mysql-test/t/lock.test

#
# Testing of table locking
#

--disable_warnings
drop table if exists t1,t2;
--enable_warnings
CREATE TABLE t1 (  `id` int(11) NOT NULL default '0', `id2` int(11) NOT NULL default '0', `id3` int(11) NOT NULL default '0', `dummy1` char(30) default NULL, PRIMARY KEY  (`id`,`id2`), KEY `index_id3` (`id3`)) ENGINE=MyISAM;
insert into t1 (id,id2) values (1,1),(1,2),(1,3);
LOCK TABLE t1 WRITE;
select dummy1,count(distinct id) from t1 group by dummy1;
update t1 set id=-1 where id=1;
LOCK TABLE t1 READ;
--error 1099
update t1 set id=1 where id=1;
--error 1100
create table t2 SELECT * from t1;
create temporary table t2 SELECT * from t1;
drop table if exists t2;
unlock tables;
create table t2 SELECT * from t1;
LOCK TABLE t1 WRITE,t2 write;
insert into t2 SELECT * from t1;
update t1 set id=1 where id=-1;
drop table t1,t2;


#
# Check bug with INSERT ... SELECT with lock tables
#

CREATE TABLE t1 (
  index1 smallint(6) default NULL,
  nr smallint(6) default NULL,
  KEY index1(index1)
) ENGINE=MyISAM;

CREATE TABLE t2 (
  nr smallint(6) default NULL,
  name varchar(20) default NULL
) ENGINE=MyISAM;

INSERT INTO t2 VALUES (1,'item1');
INSERT INTO t2 VALUES (2,'item2');

# problem begins here!
lock tables t1 write, t2 read;
insert into t1 select 1,nr from t2 where name='item1';
insert into t1 select 2,nr from t2 where name='item2';
unlock tables;
check table t1;

# Check error message
lock tables t1 write;
check table t2;
--error 1100
insert into t1 select index1,nr from t1;
unlock tables;
lock tables t1 write, t1 as t1_alias read;
insert into t1 select index1,nr from t1 as t1_alias;
drop table t1,t2;

#
# BUG#5390 - problems with merge tables
# Supplement test for the after-fix optimization
# Check that a dropped table is correctly removed from a lock.
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write;
# This removes one table after the other from the lock.
drop table t2, t3, t1;
#
# Check that a lock merge works.
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write, t1 as t4 read;
alter table t2 add column c2 int;
drop table t1, t2, t3;

# Bug7241 - Invalid response when DELETE .. USING and LOCK TABLES used.
#
create table t1 ( a int(11) not null auto_increment, primary key(a));
create table t2 ( a int(11) not null auto_increment, primary key(a));
lock tables t1 write, t2 read;
delete from t1 using t1,t2 where t1.a=t2.a;
delete t1 from t1,t2 where t1.a=t2.a;
--error 1099
delete from t2 using t1,t2 where t1.a=t2.a;
--error 1099
delete t2 from t1,t2 where t1.a=t2.a;
drop table t1,t2;

--echo End of 4.1 tests.


#
# Bug#18884 "lock table + global read lock = crash"
# The bug is not repeatable, just add the test case.
#
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (a int);
lock table t1 write;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;
drop table t1;


#
# Test LOCK TABLE on system tables.  See bug#9953: CONVERT_TZ requires
# mysql.time_zone_name to be locked.
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

CREATE TABLE t1 (i INT);

LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 READ;
UNLOCK TABLES;

LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 WRITE;
UNLOCK TABLES;

LOCK TABLES mysql.time_zone READ, mysql.proc READ;
UNLOCK TABLES;

LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE;
UNLOCK TABLES;

# If at least one system table is locked for WRITE, then all other
# tables should be system tables locked also for WRITE.
--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
LOCK TABLES mysql.time_zone READ, mysql.proc WRITE, t1 READ;

--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 READ;

--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 WRITE;

--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
LOCK TABLES mysql.time_zone READ, mysql.proc WRITE;

DROP TABLE t1;

--echo
--echo Bug#5719 impossible to lock VIEW
--echo 
--echo Just covering existing behaviour with tests. 
--echo Consistency has not been found here.
--echo
--disable_warnings
drop view if exists v_bug5719;
drop table if exists t1, t2, t3;
--enable_warnings
create table t1 (a int);
create temporary table t2 (a int);
create table t3 (a int);
create view v_bug5719 as select 1;
lock table v_bug5719 write;
--error ER_TABLE_NOT_LOCKED
select * from t1;
--echo
--echo Allowed to select from a temporary talbe under LOCK TABLES
--echo 
select * from t2;
--error ER_TABLE_NOT_LOCKED
select * from t3;
select * from v_bug5719;
drop view v_bug5719;
--echo
--echo sic: did not left LOCK TABLES mode automatically
--echo
--error ER_TABLE_NOT_LOCKED
select * from t1;
unlock tables;
create view v_bug5719 as select * from t1;
lock tables v_bug5719 write;
select * from v_bug5719;
--echo
--echo Allowed to use an underlying table under LOCK TABLES <view>
--echo
select * from t1;
--echo
--echo Allowed to select from a temporary table under LOCK TABLES
--echo
select * from t2;
--error ER_TABLE_NOT_LOCKED
select * from t3;
drop table t1;
--echo
--echo sic: left LOCK TABLES mode
--echo
select * from t3;
--error ER_VIEW_INVALID
select * from v_bug5719;
unlock tables;
drop view v_bug5719;
--echo
--echo When limitation to use temporary tables in views is removed, please
--echo add a test that shows what happens under LOCK TABLES when a view
--echo references a temporary table, is locked, and the underlying table
--echo is dropped.
--echo
--error ER_VIEW_SELECT_TMPTABLE
create view v_bug5719 as select * from t2;
--echo
--echo Cleanup.
--echo
drop table t2, t3;

--echo #
--echo # Bug#39843 DELETE requires write access to table in subquery in where clause
--echo #
--disable_warnings
DROP TABLE IF EXISTS t1,t2;
--enable_warnings
CREATE TABLE t1 (
table1_rowid SMALLINT NOT NULL
);
CREATE TABLE t2 (
table2_rowid SMALLINT NOT NULL
);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
LOCK TABLES t1 WRITE, t2 READ;
--echo # Sub-select should not try to aquire a write lock.
DELETE FROM t1 
WHERE EXISTS 
( 
SELECT 'x' 
FROM t2
WHERE t1.table1_rowid = t2.table2_rowid
) ;
--echo # While implementing the patch we didn't break old behavior;
--echo # The following sub-select should still requires a write lock:
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
SELECT * FROM t1 WHERE 1 IN (SELECT * FROM t2 FOR UPDATE);
UNLOCK TABLES;
DROP TABLE t1,t2;

--echo End of 5.1 tests.