~drizzle-trunk/drizzle/development

drop table if exists t1,t2;

create temporary table t1 (a int, b int not null,unique key (a,b),index(b)) engine=myisam;

insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);

explain select * from t1 where a is null;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a	a	5	const	3	Using where; Using index

explain select * from t1 where a is null and b = 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	9	const,const	1	Using where; Using index

explain select * from t1 where a is null and b = 7;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	9	const,const	1	Using where; Using index

explain select * from t1 where a=2 and b = 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	const	a,b	a	9	const,const	1	Using index

explain select * from t1 where a<=>b limit 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	index	NULL	a	9	NULL	12	Using where; Using index

explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a,b	a	9	NULL	3	Using where; Using index

explain select * from t1 where (a is null or a = 7) and b=7;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a,b	a	9	const,const	2	Using where; Using index

explain select * from t1 where (a is null or a = 7) and b=7 order by a;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a,b	a	9	const,const	2	Using where; Using index; Using filesort

explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	3	Using where; Using index

explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a,b	a	9	NULL	3	Using where; Using index

explain select * from t1 where a > 1 and a < 3 limit 1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a	a	5	NULL	1	Using where; Using index

explain select * from t1 where a > 8 and a < 9;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a	a	5	NULL	1	Using where; Using index

select * from t1 where a is null;

a	b

NULL	7

NULL	9

NULL	9

select * from t1 where a is null and b = 7;

a	b

NULL	7

select * from t1 where a<=>b limit 2;

a	b

1	1

2	2

select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;

a	b

1	1

2	2

select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;

a	b

NULL	9

NULL	9

select * from t1 where (a is null or a = 7) and b=7;

a	b

7	7

NULL	7

select * from t1 where a is null and b=9 or a is null and b=7 limit 3;

a	b

NULL	7

NULL	9

NULL	9

select * from t1 where a > 1 and a < 3 limit 1;

a	b

2	2

select * from t1 where a > 8 and a < 9;

a	b

create table t2 like t1;

ERROR HY000: Can't create table 'test.t2' (errno: 138)

create temporary table t2 like t1;

show create table t2;

Table	Create Table

t2	CREATE TEMPORARY TABLE `t2` (

  `a` INT DEFAULT NULL,

  `b` INT NOT NULL,

  UNIQUE KEY `a` (`a`,`b`),

  KEY `b` (`b`)

) ENGINE=MyISAM COLLATE = utf8_general_ci

insert into t2 select * from t1;

alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10));

explain select * from t1 where a is null and b = 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a is null and b = 2 and c=0;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a is null and b = 7 and c=0;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a=2 and b = 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a<=>b limit 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	X	Using where

explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a,b	a	5	NULL	X	Using where

explain select * from t1 where (a is null or a = 7) and b=7 and c=0;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a,b	a	5	const	X	Using where

explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	a,b	a	5	const	X	Using where

explain select * from t1 where a > 1 and a < 3 limit 1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a	a	5	NULL	X	Using where

explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a,b	a	5	NULL	X	Using where

explain select * from t1 where a > 8 and a < 9;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	a	a	5	NULL	X	Using where

explain select * from t1 where b like "6%";

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	b	b	12	NULL	X	Using where

select * from t1 where a is null;

a	b	c

NULL	7	0

NULL	9	0

NULL	9	0

select * from t1 where a is null and b = 7 and c=0;

a	b	c

NULL	7	0

select * from t1 where a<=>b limit 2;

a	b	c

1	1	0

2	2	0

select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;

a	b	c

1	1	0

2	2	0

select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;

a	b	c

NULL	9	0

NULL	9	0

select * from t1 where (a is null or a = 7) and b=7 and c=0;

a	b	c

7	7	0

NULL	7	0

select * from t1 where a is null and b=9 or a is null and b=7 limit 3;

a	b	c

NULL	7	0

NULL	9	0

NULL	9	0

select * from t1 where b like "6%";

a	b	c

6	6	0

drop table t1;

drop table t2;

create temporary table t1 (a int, b int not null,unique key (a,b),index(b)) engine=myisam;

alter table t1 modify b int null;

insert into t1 values (7,null), (8,null), (8,7);

explain select * from t1 where a = 7 and (b=7 or b is null);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a,b	a	10	const,const	2	Using where; Using index

select * from t1 where a = 7 and (b=7 or b is null);

a	b

7	NULL

explain select * from t1 where (a = 7 or a is null) and (b=7 or b is null);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a,b	a	5	const	2	Using where; Using index

select * from t1 where (a = 7 or a is null) and (b=7 or b is null);

a	b

7	NULL

explain select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref_or_null	a	a	5	const	2	Using where; Using index

select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);

a	b

7	NULL

create table t2 (a int);

insert into t2 values (7),(8);

explain select * from t2 straight_join t1 where t1.a=t2.a and b is null;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t1	ref	a,b	b	5	const	X	Using where

drop index b on t1;

explain select * from t2,t1 where t1.a=t2.a and b is null;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t1	ref	a	a	10	test.t2.a,const	X	Using where; Using index

select * from t2,t1 where t1.a=t2.a and b is null;

a	a	b

7	7	NULL

8	8	NULL

explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t1	ref_or_null	a	a	10	test.t2.a,const	X	Using where; Using index

select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);

a	a	b

7	7	NULL

8	8	7

8	8	NULL

explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t1	ref_or_null	a	a	10	test.t2.a,const	X	Using where; Using index

select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;

a	a	b

8	8	7

explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t1	ref_or_null	a	a	5	test.t2.a	X	Using where; Using index

select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);

a	a	b

7	7	NULL

8	8	NULL

8	8	7

insert into t2 values (null),(6);

delete from t1 where a=8;

explain select * from t2,t1 where t1.a=t2.a or t1.a is null;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	system	a	NULL	NULL	NULL	X	

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	Using where

explain select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	system	a	NULL	NULL	NULL	X	

1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	X	Using where

select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);

a	a	b

7	7	NULL

drop table t1,t2;

CREATE TEMPORARY TABLE t1 (

id int NOT NULL auto_increment,

uniq_id int default NULL,

PRIMARY KEY  (id),

UNIQUE KEY idx1 (uniq_id)

) ENGINE=MyISAM;

CREATE TEMPORARY TABLE t2 (

id int NOT NULL auto_increment,

uniq_id int default NULL,

PRIMARY KEY  (id)

) ENGINE=MyISAM;

INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);

INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);

explain select id from t1 where uniq_id is null;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ref	idx1	idx1	5	const	5	Using where

explain select id from t1 where uniq_id =1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	const	idx1	idx1	5	const	1	

UPDATE t1 SET id=id+100 where uniq_id is null;

UPDATE t2 SET id=id+100 where uniq_id is null;

select id from t1 where uniq_id is null;

id

101

102

105

106

109

110

select id from t2 where uniq_id is null;

id

101

102

105

106

109

110

DELETE FROM t1 WHERE uniq_id IS NULL;

DELETE FROM t2 WHERE uniq_id IS NULL;

SELECT * FROM t1 ORDER BY uniq_id, id;

id	uniq_id

3	1

4	2

7	3

8	4

SELECT * FROM t2 ORDER BY uniq_id, id;

id	uniq_id

3	1

4	2

7	3

8	4

DROP table t1,t2;

CREATE TEMPORARY TABLE `t1` (

`order_id` char(32) NOT NULL default '',

`product_id` char(32) NOT NULL default '',

`product_type` int NOT NULL default '0',

PRIMARY KEY  (`order_id`,`product_id`,`product_type`)

) ENGINE=MyISAM;

CREATE TEMPORARY TABLE `t2` (

`order_id` char(32) NOT NULL default '',

`product_id` char(32) NOT NULL default '',

`product_type` int NOT NULL default '0',

PRIMARY KEY  (`order_id`,`product_id`,`product_type`)

) ENGINE=MyISAM;

INSERT INTO t1 (order_id, product_id, product_type) VALUES

('3d7ce39b5d4b3e3d22aaafe9b633de51',1206029, 3),

('3d7ce39b5d4b3e3d22aaafe9b633de51',5880836, 3),

('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);

INSERT INTO t2 (order_id, product_id, product_type) VALUES

('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);

select t1.* from t1

left join t2 using(order_id, product_id, product_type)

where t2.order_id=NULL;

order_id	product_id	product_type

select t1.* from t1

left join t2 using(order_id, product_id, product_type)

where t2.order_id is NULL;

order_id	product_id	product_type

3d7ce39b5d4b3e3d22aaafe9b633de51	1206029	3

3d7ce39b5d4b3e3d22aaafe9b633de51	5880836	3

drop table t1,t2;

create table t1 (id int);

insert into t1 values (null), (0);

create table t2 (id int);

insert into t2 values (null);

select * from t1, t2 where t1.id = t2.id;

id	id

alter table t1 add key id (id);

select * from t1, t2 where t1.id = t2.id;

id	id

drop table t1,t2;

create table t1 (

id  integer,

id2 integer not null,

index (id),

index (id2)

);

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

ERROR 23000: Column 'id2' cannot be null

select * from t1;

id	id2

select * from t1 where id <=> null;

id	id2

select * from t1 where id <=> null or id > 0;

id	id2

select * from t1 where id is null or id > 0;

id	id2

select * from t1 where id2 <=> null or id2 > 0;

id	id2

select * from t1 where id2 is null or id2 > 0;

id	id2

delete from t1 where id <=> NULL;

select * from t1;

id	id2

drop table t1;

CREATE TABLE t1 (a int);

CREATE TABLE t2 (a int, b int, INDEX idx(a));

CREATE TABLE t3 (b int, INDEX idx(b));

CREATE TABLE t4 (b int, INDEX idx(b));

INSERT INTO t1 VALUES (1), (2), (3), (4);

INSERT INTO t2 VALUES (1, 1), (3, 1);

INSERT INTO t3 VALUES 

(NULL), (NULL), (NULL), (NULL), (NULL),

(NULL), (NULL), (NULL), (NULL), (NULL);

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t4 SELECT * FROM t3;

INSERT INTO t3 SELECT * FROM t4;

INSERT INTO t3 VALUES (2), (3);

ANALYZE table t1, t2, t3;

Table	Op	Msg_type	Msg_text

test.t1	analyze	status	OK

test.t2	analyze	status	OK

test.t3	analyze	status	OK

SELECT COUNT(*) FROM t3;

COUNT(*)

15972

EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a

LEFT JOIN t3 ON t2.b=t3.b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	X	

1	SIMPLE	t2	ref	idx	idx	5	test.t1.a	X	

1	SIMPLE	t3	ref	idx	idx	5	test.t2.b	X	Using index

FLUSH STATUS ;

SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a

LEFT JOIN t3 ON t2.b=t3.b;

a	a	b	b

1	1	1	NULL

2	NULL	NULL	NULL

3	3	1	NULL

4	NULL	NULL	NULL

SELECT FOUND_ROWS();

FOUND_ROWS()

4

SHOW STATUS LIKE "handler_read%";

Variable_name	Value

Handler_read_first	1

Handler_read_key	10

Handler_read_next	2

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	5

DROP TABLE t1,t2,t3,t4;

CREATE TABLE t1 (

a int default NULL,

b int default NULL,

KEY a (a,b)

);

INSERT INTO t1 VALUES (0,10),(0,11),(0,12);

CREATE TABLE t2 (

a int default NULL,

b int default NULL,

KEY a (a)

);

INSERT INTO t2 VALUES (3,NULL),(3,11),(3,12);

SELECT * FROM t2 inner join t1 WHERE ( t1.a = 0 OR t1.a IS NULL) AND t2.a = 3 AND t2.b = t1.b;

a	b	a	b

3	11	0	11

3	12	0	12

drop table t1, t2;

End of 5.0 tests