~drizzle-trunk/drizzle/development

#

# Test of update and delete with limit

#

--disable_warnings

drop table if exists t1;

--enable_warnings

create table t1 (a int not null default 0 primary key, b int not null default 0);

insert into t1 () values ();		# Testing default values

insert into t1 values (1,1),(2,1),(3,1);

update t1 set a=4 where b=1 limit 1;

select * from t1;

update t1 set b=2 where b=1 limit 2;

--sorted_result

select * from t1;

update t1 set b=4 where b=1;

--sorted_result

select * from t1;

delete from t1 where b=2 limit 1;

--sorted_result

select * from t1;

delete from t1 limit 1;

--sorted_result

select * from t1;

drop table t1;

create table t1 (i int);

insert into t1 (i) values(1),(1),(1);

delete from t1 limit 1;

update t1 set i=2 limit 1;

delete from t1 limit 0;

update t1 set i=3 limit 0;

--sorted_result

select * from t1;

drop table t1;

# LIMIT 0

select 0 limit 0;

#

# Test with DELETE, ORDER BY and limit (bug #1024)

#

CREATE TABLE t1(id int auto_increment primary key, id2 int, index(id2)); 

INSERT INTO t1 (id2) values (0),(0),(0);

DELETE FROM t1 WHERE id=1;

INSERT INTO t1 SET id2=0;

SELECT * FROM t1; 

DELETE FROM t1 WHERE id2 = 0 ORDER BY id LIMIT 1; 

# should have deleted WHERE id=2 

SELECT * FROM t1; 

DELETE FROM t1 WHERE id2 = 0 ORDER BY id desc LIMIT 1; 

SELECT * FROM t1;

DROP TABLE t1;

#

# Bug #21787: COUNT(*) + ORDER BY + LIMIT returns wrong result

#

create table t1 (a int);

insert into t1 values (1),(2),(3),(4),(5),(6),(7);

explain select count(*) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;

select count(*) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;

explain select sum(a) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;

select sum(a) c FROM t1 WHERE a > 0 ORDER BY c LIMIT 3;

drop table t1;

# End of 4.1 tests

--echo End of 5.0 tests