Current File : /home/rs/mysql/4.0/mysql-test/r/delete.result
drop table if exists t1;
CREATE TABLE t1 (a tinyint(3), b tinyint(5));
INSERT INTO t1 VALUES (1,1);
INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
INSERT INTO t1 VALUES (1,3);
DELETE from t1 where a=1 limit 1;
DELETE LOW_PRIORITY from t1 where a=1;
INSERT INTO t1 VALUES (1,1);
DELETE from t1;
LOCK TABLE t1 write;
INSERT INTO t1 VALUES (1,2);
DELETE from t1;
UNLOCK TABLES;
INSERT INTO t1 VALUES (1,2);
SET AUTOCOMMIT=0;
DELETE from t1;
SET AUTOCOMMIT=1;
drop table t1;
create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
delete from t1 where a=26;
drop table t1;
create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
delete from t1 where a=27;
drop table t1;
CREATE TABLE t1 (
bool char(0) default NULL,
not_null varchar(20) binary NOT NULL default '',
misc integer not null,
PRIMARY KEY (not_null)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (NULL,'a',4), (NULL,'b',5), (NULL,'c',6), (NULL,'d',7);
select * from t1 where misc > 5 and bool is null;
bool not_null misc
NULL c 6
NULL d 7
delete from t1 where misc > 5 and bool is null;
select * from t1 where misc > 5 and bool is null;
bool not_null misc
select count(*) from t1;
count(*)
2
delete from t1 where 1 > 2;
select count(*) from t1;
count(*)
2
delete from t1 where 3 > 2;
select count(*) from t1;
count(*)
0
drop table t1;
create table t1 (a int not null auto_increment primary key, b char(32));
insert into t1 (b) values ('apple'), ('apple');
select * from t1;
a b
1 apple
2 apple
delete t1 from t1, t1 as t2 where t1.b = t2.b and t1.a > t2.a;
select * from t1;
a b
1 apple
drop table t1;
CREATE TABLE t1 ( a int PRIMARY KEY );
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
INSERT INTO t1 VALUES (0),(1),(2);
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
SELECT * FROM t1;
a
0
2
DROP TABLE t1;
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