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locking type of temp table The problem is that INSERT INTO .. SELECT FROM .. and CREATE TABLE .. SELECT FROM a temporary table could inadvertently overwrite the locking type of the temporary table. The lock type of temporary tables should be a write lock by default. The solution is to reset the lock type of temporary tables back to its default value after they are used in a statement. mysql-test/r/innodb_mysql.result: Add test case result for Bug#41348 mysql-test/r/temp_table.result: Add test case result for Bug#41348 mysql-test/t/innodb_mysql.test: Add test case for Bug#41348 mysql-test/t/temp_table.test: Add test case for Bug#41348 sql/sql_base.cc: Allow the lock type of temp tables to be overwritten now that the the value is being restored once the table is marked as free for re-use. This makes the behavior consistent with that of non-temporary tables and avoids confusion.
214 lines
5.6 KiB
Plaintext
214 lines
5.6 KiB
Plaintext
drop table if exists t1,t2;
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drop view if exists v1;
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CREATE TABLE t1 (c int not null, d char (10) not null);
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insert into t1 values(1,""),(2,"a"),(3,"b");
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CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
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insert into t1 values(4,"e"),(5,"f"),(6,"g");
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alter table t1 rename t2;
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select * from t1;
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c d
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1
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2 a
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3 b
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select * from t2;
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a b
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4 e
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5 f
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6 g
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CREATE TABLE t2 (x int not null, y int not null);
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alter table t2 rename t1;
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select * from t1;
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a b
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4 e
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5 f
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6 g
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create TEMPORARY TABLE t2 engine=heap select * from t1;
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create TEMPORARY TABLE IF NOT EXISTS t2 (a int) engine=heap;
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Warnings:
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Note 1050 Table 't2' already exists
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CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
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ERROR 42S01: Table 't1' already exists
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ALTER TABLE t1 RENAME t2;
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ERROR 42S01: Table 't2' already exists
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select * from t2;
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a b
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4 e
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5 f
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6 g
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alter table t2 add primary key (a,b);
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drop table t1,t2;
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select * from t1;
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c d
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1
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2 a
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3 b
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drop table t2;
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create temporary table t1 select *,2 as "e" from t1;
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select * from t1;
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c d e
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1 2
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2 a 2
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3 b 2
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drop table t1;
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drop table t1;
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CREATE TABLE t1 (pkCrash INTEGER PRIMARY KEY,strCrash VARCHAR(255));
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INSERT INTO t1 ( pkCrash, strCrash ) VALUES ( 1, '1');
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SELECT CONCAT_WS(pkCrash, strCrash) FROM t1;
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CONCAT_WS(pkCrash, strCrash)
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1
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drop table t1;
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create temporary table t1 select 1 as 'x';
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drop table t1;
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CREATE TABLE t1 (x INT);
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE TEMPORARY TABLE tmp SELECT *, NULL FROM t1;
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drop table t1;
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create temporary table t1 (id int(10) not null unique);
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create temporary table t2 (id int(10) not null primary key,
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val int(10) not null);
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insert into t1 values (1),(2),(4);
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insert into t2 values (1,1),(2,1),(3,1),(4,2);
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select one.id, two.val, elt(two.val,'one','two') from t1 one, t2 two where two.id=one.id order by one.id;
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id val elt(two.val,'one','two')
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1 1 one
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2 1 one
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4 2 two
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drop table t1,t2;
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create temporary table t1 (a int not null);
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insert into t1 values (1),(1);
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alter table t1 add primary key (a);
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ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
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drop table t1;
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CREATE TABLE t1 (
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d datetime default NULL
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');
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flush status;
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select * from t1 group by d;
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d
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2002-10-24 14:50:32
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2002-10-24 14:50:33
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2002-10-24 14:50:34
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2002-10-24 14:50:35
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2002-10-24 14:50:36
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2002-10-24 14:50:37
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2002-10-24 14:50:38
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2002-10-24 14:50:39
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2002-10-24 14:50:40
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show status like "created_tmp%tables";
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Variable_name Value
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Created_tmp_disk_tables 0
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Created_tmp_tables 1
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drop table t1;
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create temporary table v1 as select 'This is temp. table' A;
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create view v1 as select 'This is view' A;
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select * from v1;
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A
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This is temp. table
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show create table v1;
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Table Create Table
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v1 CREATE TEMPORARY TABLE `v1` (
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`A` varchar(19) NOT NULL DEFAULT ''
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select 'This is view' AS `A` latin1 latin1_swedish_ci
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drop view v1;
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select * from v1;
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A
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This is temp. table
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create view v1 as select 'This is view again' A;
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select * from v1;
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A
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This is temp. table
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drop table v1;
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select * from v1;
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A
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This is view again
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drop view v1;
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create table t1 (a int, b int, index(a), index(b));
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create table t2 (c int auto_increment, d varchar(255), primary key (c));
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insert into t1 values (3,1),(3,2);
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insert into t2 values (NULL, 'foo'), (NULL, 'bar');
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select d, c from t1 left join t2 on b = c where a = 3 order by d;
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d c
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bar 2
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foo 1
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drop table t1, t2;
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (i INT);
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LOCK TABLE t1 WRITE;
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CREATE TEMPORARY TABLE t1 (i INT);
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The following command should not block
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DROP TEMPORARY TABLE t1;
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DROP TABLE t1;
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CREATE TABLE t1 (i INT);
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CREATE TEMPORARY TABLE t2 (i INT);
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DROP TEMPORARY TABLE t2, t1;
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ERROR 42S02: Unknown table 't1'
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SELECT * FROM t2;
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ERROR 42S02: Table 'test.t2' doesn't exist
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SELECT * FROM t1;
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i
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DROP TABLE t1;
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End of 4.1 tests.
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CREATE TABLE t1 ( c FLOAT( 20, 14 ) );
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INSERT INTO t1 VALUES( 12139 );
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CREATE TABLE t2 ( c FLOAT(30,18) );
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INSERT INTO t2 VALUES( 123456 );
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SELECT AVG( c ) FROM t1 UNION SELECT 1;
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AVG( c )
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12139
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1
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SELECT 1 UNION SELECT AVG( c ) FROM t1;
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1
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1
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12139
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SELECT 1 UNION SELECT * FROM t2 UNION SELECT 1;
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1
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1
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123456
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SELECT c/1 FROM t1 UNION SELECT 1;
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c/1
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12139
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1
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DROP TABLE t1, t2;
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create temporary table t1 (a int);
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insert into t1 values (4711);
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select * from t1;
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a
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4711
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truncate t1;
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insert into t1 values (42);
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select * from t1;
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a
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42
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drop table t1;
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CREATE TEMPORARY TABLE t1(a INT, b VARCHAR(20));
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INSERT INTO t1 VALUES(1, 'val1'), (2, 'val2'), (3, 'val3');
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DELETE FROM t1 WHERE a=1;
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SELECT count(*) FROM t1;
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count(*)
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2
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DELETE FROM t1;
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SELECT * FROM t1;
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a b
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DROP TABLE t1;
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DROP TABLE IF EXISTS t1,t2;
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DROP FUNCTION IF EXISTS f1;
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CREATE TEMPORARY TABLE t1 (a INT);
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CREATE TEMPORARY TABLE t2 LIKE t1;
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CREATE FUNCTION f1() RETURNS INT
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BEGIN
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return 1;
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END|
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INSERT INTO t2 SELECT * FROM t1;
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INSERT INTO t1 SELECT f1();
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CREATE TABLE t3 SELECT * FROM t1;
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INSERT INTO t1 SELECT f1();
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UPDATE t1,t2 SET t1.a = t2.a;
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INSERT INTO t2 SELECT f1();
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DROP TABLE t1,t2,t3;
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DROP FUNCTION f1;
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End of 5.1 tests
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