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------------------------------------------------------------ revno: 3672 committer: lars-erik.bjork@sun.com branch nick: 48067-mysql-6.0-codebase-bugfixing timestamp: Mon 2009-10-26 13:51:43 +0100 message: This is a patch for bug#48067 "A temp table with the same name as an existing table, makes drop database fail" When dropping the database, mysql_rm_known_files() reads the contents of the database directory, and creates a TABLE_LIST object, for each .frm file encountered. Temporary tables, however, are not associated with any .frm file. The list of tables to drop are passed to mysql_rm_table_part2(). This method prefers temporary tables over regular tables, so if there is a temporary table with the same name as a regular, the temporary is removed, leaving the regular table intact. Regular tables are only deleted if there are no temporary tables with the same name. This fix ensures, that for all TABLE_LIST objects that are created by mysql_rm_known_files(), 'open_type' is set to 'OT_BASE_ONLY', to indicate that this is a regular table. In all cases in mysql_rm_table_part2() where we prefer a temporary table to a non-temporary table, we chek if 'open_type' equals 'OT_BASE_ONLY'. mysql-test/r/temp_table.result: The expected result of the test. mysql-test/t/temp_table.test: Test based on the bug report. sql/sql_db.cc: For all TABLE_LIST objects that are created by mysql_rm_known_files(), 'open_type' is set to 'OT_BASE_ONLY', to indicate that these are regular tables. sql/sql_table.cc: Check if 'open_type' is set to 'OT_BASE_ONLY, every place a temporary table is preferred to a non-temporary table.
253 lines
6.4 KiB
Text
253 lines
6.4 KiB
Text
# mysqltest should be fixed
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-- source include/not_embedded.inc
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#
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# Test of temporary tables
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#
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--disable_warnings
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drop table if exists t1,t2;
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drop view if exists v1;
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--enable_warnings
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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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select * from t2;
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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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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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# This should give errors
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--error 1050
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CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
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--error 1050
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ALTER TABLE t1 RENAME t2;
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select * from t2;
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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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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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drop table t1;
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drop table t1;
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#
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# Test CONCAT_WS with temporary tables
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#
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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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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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#
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# Problem with ELT
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#
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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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# put in some initial values
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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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# do a query using ELT, a join and an ORDER BY.
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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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drop table t1,t2;
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#
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# Test of failed ALTER TABLE on temporary table
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#
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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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-- error ER_DUP_ENTRY
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alter table t1 add primary key (a);
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drop table t1;
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#
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# In MySQL 4.0.4 doing a GROUP BY on a NULL column created a disk based
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# temporary table when a memory based one would be good enough.
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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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show status like "created_tmp%tables";
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drop table t1;
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# Fix for BUG#8921: Check that temporary table is ingored by view commands.
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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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show create table v1;
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show create view v1;
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drop view v1;
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select * from v1;
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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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drop table v1;
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select * from v1;
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drop view v1;
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# Bug #8497: tmpdir with extra slashes would cause failures
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#
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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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drop table t1, t2;
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#
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# BUG#21096: locking issue ; temporary table conflicts.
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#
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# The problem was that on DROP TEMPORARY table name lock was acquired,
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# which should not be done.
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#
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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CREATE TABLE t1 (i INT);
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LOCK TABLE t1 WRITE;
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connect (conn1, localhost, root,,);
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CREATE TEMPORARY TABLE t1 (i INT);
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--echo The following command should not block
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DROP TEMPORARY TABLE t1;
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disconnect conn1;
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connection default;
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DROP TABLE t1;
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#
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# Check that it's not possible to drop a base table with
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# DROP TEMPORARY statement.
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#
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CREATE TABLE t1 (i INT);
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CREATE TEMPORARY TABLE t2 (i INT);
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--error 1051
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DROP TEMPORARY TABLE t2, t1;
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# Table t2 should have been dropped.
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--error 1146
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SELECT * FROM t2;
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# But table t1 should still be there.
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SELECT * FROM t1;
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DROP TABLE t1;
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--echo End of 4.1 tests.
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#
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# Bug #24791: Union with AVG-groups generates wrong results
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#
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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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SELECT 1 UNION SELECT AVG( c ) FROM t1;
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SELECT 1 UNION SELECT * FROM t2 UNION SELECT 1;
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SELECT c/1 FROM t1 UNION SELECT 1;
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DROP TABLE t1, t2;
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#
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# Test truncate with temporary tables
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#
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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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truncate t1;
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insert into t1 values (42);
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select * from t1;
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drop table t1;
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#
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# Bug #35392: Delete all statement does not execute properly after
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# few delete statements
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#
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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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DELETE FROM t1;
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SELECT * FROM t1;
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DROP TABLE t1;
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#
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# Bug#41348: INSERT INTO tbl SELECT * FROM temp_tbl overwrites locking type of temp table
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#
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--disable_warnings
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DROP TABLE IF EXISTS t1,t2;
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DROP FUNCTION IF EXISTS f1;
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--enable_warnings
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CREATE TEMPORARY TABLE t1 (a INT);
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CREATE TEMPORARY TABLE t2 LIKE t1;
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DELIMITER |;
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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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DELIMITER ;|
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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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--echo #
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--echo # Bug #48067: A temp table with the same name as an existing table,
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--echo # makes drop database fail.
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--echo #
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--disable_warnings
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DROP TEMPORARY TABLE IF EXISTS bug48067.t1;
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DROP DATABASE IF EXISTS bug48067;
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--enable_warnings
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CREATE DATABASE bug48067;
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CREATE TABLE bug48067.t1 (c1 int);
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INSERT INTO bug48067.t1 values (1);
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CREATE TEMPORARY TABLE bug48067.t1 (c1 int);
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DROP DATABASE bug48067;
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DROP TEMPORARY table bug48067.t1;
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--echo End of 5.1 tests
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