~drizzle-trunk/drizzle/development

drop table if exists t1,t2;

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

insert into t1 (b) values (2),(3),(5),(5),(5),(6),(7),(9);

select SQL_CALC_FOUND_ROWS * from t1;

a	b

1	2

2	3

3	5

4	5

5	5

6	6

7	7

8	9

select found_rows();

found_rows()

8

select SQL_CALC_FOUND_ROWS * from t1 limit 1;

a	b

1	2

select found_rows();

found_rows()

8

select SQL_BUFFER_RESULT SQL_CALC_FOUND_ROWS * from t1 limit 1;

a	b

1	2

select found_rows();

found_rows()

8

select SQL_CALC_FOUND_ROWS * from t1 order by b desc limit 1;

a	b

8	9

select found_rows();

found_rows()

8

select SQL_CALC_FOUND_ROWS distinct b from t1 limit 1;

b

2

select found_rows();

found_rows()

6

select SQL_CALC_FOUND_ROWS b,count(*) as c from t1 group by b order by c desc limit 1;

b	c

5	3

select found_rows();

found_rows()

6

select SQL_CALC_FOUND_ROWS * from t1 left join t1 as t2 on (t1.b=t2.a) limit 2,1;

a	b	a	b

3	5	5	5

select found_rows();

found_rows()

8

drop table t1;

create table t1 (a int not null primary key);

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

select sql_calc_found_rows a from t1 where a in (1,2,3) order by a desc limit 0,2;

a

3

2

select FOUND_ROWS();

FOUND_ROWS()

3

select sql_calc_found_rows a from t1 where a in (1,2,3) order by a+2 desc limit 0,2;

a

3

2

select FOUND_ROWS();

FOUND_ROWS()

3

drop table t1;

CREATE TABLE t1 (

`id` smallint(5) unsigned NOT NULL auto_increment,

`kid` smallint(5) unsigned NOT NULL default '0',

PRIMARY KEY (`id`),

KEY `kid` (`kid`)

);

CREATE TABLE t2 (

id smallint(5) unsigned NOT NULL auto_increment,

name varchar(50) NOT NULL default '',

email varchar(50) NOT NULL default '',

PRIMARY KEY  (id),

UNIQUE KEY e_n (email,name)

);

EXPLAIN SELECT SQL_CALC_FOUND_ROWS DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL LIMIT 10;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	system	PRIMARY,kid	NULL	NULL	NULL	0	const row not found

1	SIMPLE	t2	index	NULL	e_n	104	NULL	10	

SELECT SQL_CALC_FOUND_ROWS DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL LIMIT 10;

email

email1

email10

email100

email101

email102

email103

email104

email105

email106

email107

SELECT FOUND_ROWS();

FOUND_ROWS()

200

SELECT SQL_CALC_FOUND_ROWS DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL order by email LIMIT 10;

email

email1

email10

email100

email101

email102

email103

email104

email105

email106

email107

SELECT FOUND_ROWS();

FOUND_ROWS()

200

SELECT DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL LIMIT 10;

email

email1

email2

email3

email4

email5

email6

email7

email8

email9

email10

SELECT DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL ORDER BY email LIMIT 10;

email

email1

email10

email100

email101

email102

email103

email104

email105

email106

email107

INSERT INTO `t1` (`id`, `kid`) VALUES ('0', '150');

SELECT SQL_CALC_FOUND_ROWS DISTINCT email FROM t2 LEFT JOIN t1  ON kid = t2.id WHERE t1.id IS NULL LIMIT 10;

email

email1

email2

email3

email4

email5

email6

email7

email8

email9

email10

SELECT FOUND_ROWS();

FOUND_ROWS()

199

drop table t1,t2;

CREATE TABLE `t1` (

`titre` char(80) NOT NULL default '',

`numeropost` mediumint(8) unsigned NOT NULL auto_increment,

`maxnumrep` int(10) unsigned NOT NULL default '0',

PRIMARY KEY  (`numeropost`),

KEY `maxnumrep` (`maxnumrep`)

) ENGINE=MyISAM ROW_FORMAT=FIXED;

INSERT INTO t1 (titre,maxnumrep) VALUES

('test1','1'),('test2','2'),('test3','3');

SELECT SQL_CALC_FOUND_ROWS titre,numeropost,maxnumrep FROM t1 WHERE numeropost IN (1,2) ORDER BY maxnumrep DESC LIMIT 0, 1;

titre	numeropost	maxnumrep

test2	2	2

SELECT FOUND_ROWS();

FOUND_ROWS()

2

SELECT SQL_CALC_FOUND_ROWS 1 FROM (SELECT 1) as a LIMIT 0;

1

SELECT FOUND_ROWS();

FOUND_ROWS()

1

SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE numeropost > 1  LIMIT 0;

titre	numeropost	maxnumrep

SELECT FOUND_ROWS();

FOUND_ROWS()

2

SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 0;

titre	numeropost	maxnumrep

SELECT FOUND_ROWS();

FOUND_ROWS()

3

SELECT SQL_CALC_FOUND_ROWS * FROM t1 ORDER BY numeropost  LIMIT 0;

titre	numeropost	maxnumrep

SELECT FOUND_ROWS();

FOUND_ROWS()

3

drop table t1;

create table t1 (id int, primary key (id));

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

select SQL_CALC_FOUND_ROWS * from t1 where id > 3 limit 0, 1;

id

4

select FOUND_ROWS();

FOUND_ROWS()

2

select SQL_CALC_FOUND_ROWS * from t1 where id > 3 AND 1=2 limit 0, 1;

id

select FOUND_ROWS();

FOUND_ROWS()

0

select SQL_CALC_FOUND_ROWS * from t1 where id > 6 limit 0, 1;

id

select FOUND_ROWS();

FOUND_ROWS()

0

drop table t1;

CREATE TABLE t1 ( a int not null, b int not null, KEY ab(a,b) );

INSERT INTO t1 VALUES ( 47,    1  );

INSERT INTO t1 VALUES ( 70,    1  );

SELECT * FROM t1

WHERE

(

( b =1 AND a BETWEEN 14 AND 21 ) OR

( b =2 AND a BETWEEN 16 AND 18 ) OR

( b =3 AND a BETWEEN 15 AND 19 )

);

a	b

DROP TABLE t1;

CREATE TABLE t1 ( a integer, u varchar(15), r integer, key uao_idx( r, a, u));

DELETE  FROM t1

WHERE (  r = 1 AND a IN ( 1, 2    ) AND ( u = 'w'   OR u LIKE 'w/%'   ) )

OR (  r = 1 AND a IN (       3 ) AND ( u = 'w/U' OR u LIKE 'w/U/%' ) )

OR (  r = 1 AND a IN ( 1, 2, 3 ) AND ( u = 'w'                     ) );

drop table t1;

CREATE TABLE t1 (a VARCHAR(16), UNIQUE(a));

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

SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a = '2' LIMIT 0, 1;

a

2

SELECT FOUND_ROWS();

FOUND_ROWS()

1

DROP TABLE t1;

CREATE TABLE t1 (a INT);

INSERT INTO t1 VALUES (0), (0), (1), (2);

SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE a = 0 GROUP BY a HAVING a > 10;

a

SELECT FOUND_ROWS();

FOUND_ROWS()

0

DROP TABLE t1;

SELECT 'foo';

foo

foo

SELECT FOUND_ROWS();

FOUND_ROWS()

1

SELECT SQL_CALC_FOUND_ROWS 'foo';

foo

foo

SELECT FOUND_ROWS();

FOUND_ROWS()

1

SELECT SQL_CALC_FOUND_ROWS 'foo' limit 0;

foo

SELECT FOUND_ROWS();

FOUND_ROWS()

1

SELECT FOUND_ROWS();

FOUND_ROWS()

1

SELECT SQL_CALC_FOUND_ROWS 'foo' UNION SELECT 'bar' LIMIT 0;

foo

SELECT FOUND_ROWS();

FOUND_ROWS()

2

CREATE TABLE t1 (a int, b int);

INSERT INTO t1 VALUES (1,2), (1,3), (1,4), (1,5);

SELECT SQL_CALC_FOUND_ROWS DISTINCT 'a' FROM t1 GROUP BY b LIMIT 2;

a

a

SELECT FOUND_ROWS();

FOUND_ROWS()

1

DROP TABLE t1;