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d4779d3534
Added a test case for bug #8392. sql_delete.cc: Fixed bug #8392. The bug caused a crash for a delete statement with ORDER BY that explicitly referred to the modified table.
84 lines
2.2 KiB
Text
84 lines
2.2 KiB
Text
#
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# Check for problems with delete
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#
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drop table if exists t1;
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CREATE TABLE t1 (a tinyint(3), b tinyint(5));
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INSERT INTO t1 VALUES (1,1);
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INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
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INSERT INTO t1 VALUES (1,3);
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DELETE from t1 where a=1 limit 1;
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DELETE LOW_PRIORITY from t1 where a=1;
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INSERT INTO t1 VALUES (1,1);
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DELETE from t1;
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LOCK TABLE t1 write;
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INSERT INTO t1 VALUES (1,2);
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DELETE from t1;
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UNLOCK TABLES;
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INSERT INTO t1 VALUES (1,2);
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SET AUTOCOMMIT=0;
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DELETE from t1;
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SET AUTOCOMMIT=1;
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drop table t1;
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#
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# Test of delete when the delete will cause a node to disappear and reappear
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# (This assumes a block size of 1024)
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#
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create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
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insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
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delete from t1 where a=26;
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drop table t1;
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create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
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insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
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delete from t1 where a=27;
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drop table t1;
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#
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# CHAR(0) bug - not actually DELETE bug, but anyway...
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#
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CREATE TABLE t1 (
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bool char(0) default NULL,
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not_null varchar(20) binary NOT NULL default '',
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misc integer not null,
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PRIMARY KEY (not_null)
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) TYPE=MyISAM;
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INSERT INTO t1 VALUES (NULL,'a',4), (NULL,'b',5), (NULL,'c',6), (NULL,'d',7);
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select * from t1 where misc > 5 and bool is null;
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delete from t1 where misc > 5 and bool is null;
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select * from t1 where misc > 5 and bool is null;
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select count(*) from t1;
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delete from t1 where 1 > 2;
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select count(*) from t1;
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delete from t1 where 3 > 2;
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select count(*) from t1;
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drop table t1;
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#
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# Bug #5733: Table handler error with self-join multi-table DELETE
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#
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create table t1 (a int not null auto_increment primary key, b char(32));
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insert into t1 (b) values ('apple'), ('apple');
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select * from t1;
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delete t1 from t1, t1 as t2 where t1.b = t2.b and t1.a > t2.a;
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select * from t1;
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drop table t1;
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#
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# Bug #8392: delete with ORDER BY containing a direct reference to the table
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#
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CREATE TABLE t1 ( a int PRIMARY KEY );
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DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
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INSERT INTO t1 VALUES (0),(1),(2);
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DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
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SELECT * FROM t1;
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DROP TABLE t1;
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