~drizzle-trunk/drizzle/development

#

# Testing of found_rows()

#

--disable_warnings

drop table if exists t1,t2;

--enable_warnings

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;

select found_rows();

select SQL_CALC_FOUND_ROWS * from t1 limit 1;

select found_rows();

select SQL_BUFFER_RESULT SQL_CALC_FOUND_ROWS * from t1 limit 1;

select found_rows();

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

select found_rows();

select SQL_CALC_FOUND_ROWS distinct b from t1 limit 1;

select found_rows();

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

select found_rows();

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

select found_rows(); 

drop table t1;

#

# Test SQL_CALC_FOUND_ROWS optimization when used with one table and filesort

#

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;

select FOUND_ROWS();

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

select FOUND_ROWS();

drop table t1;

#

# Test of SQL_CALC_FOUND_ROWS with DISTINCT

#

CREATE TABLE t1 (

`id` int NOT NULL auto_increment,

`kid` int NOT NULL default '0',

PRIMARY KEY (`id`),

KEY `kid` (`kid`)

);

CREATE TABLE t2 (

  id int 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)

);

disable_query_log;

begin;

let $1=200;

let $2=0;

while ($1) 

{

  inc $2;

  eval INSERT INTO t2 VALUES ($2,'name$2','email$2');

  dec $1;

}

commit;

enable_query_log;

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

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

SELECT FOUND_ROWS();

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;

SELECT FOUND_ROWS();

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

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

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;

SELECT FOUND_ROWS();

drop table t1,t2;

#

# Test bug when using range optimization

#

CREATE TEMPORARY TABLE `t1` (

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

  `numeropost` int NOT NULL auto_increment,

  `maxnumrep` int 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;

SELECT FOUND_ROWS();

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

SELECT FOUND_ROWS();

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

SELECT FOUND_ROWS();

SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 0;

SELECT FOUND_ROWS();

SELECT SQL_CALC_FOUND_ROWS * FROM t1 ORDER BY numeropost  LIMIT 0;

SELECT FOUND_ROWS();

drop table t1;

#

# Test problem with impossible WHERE (Bug #1468)

#

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;

select FOUND_ROWS();

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

select FOUND_ROWS();

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

select FOUND_ROWS();

drop table t1;

#

# Other bugs with range optimization

#

# bug #2448

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 )

);

DROP TABLE t1;

# bug #2698

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;

#

# Bug #3738: we have a ref key

#

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;

SELECT FOUND_ROWS();

DROP TABLE t1;

#

# Bug #3845: group by, having and empty result

#

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;

SELECT FOUND_ROWS();

DROP TABLE t1;

#

# Bug #6089: queries which don't use any tables

#

SELECT 'foo';

SELECT FOUND_ROWS();

SELECT SQL_CALC_FOUND_ROWS 'foo';

SELECT FOUND_ROWS();

SELECT SQL_CALC_FOUND_ROWS 'foo' limit 0;

SELECT FOUND_ROWS();

SELECT FOUND_ROWS();

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

SELECT FOUND_ROWS();

#

# Bug #7945: group by + distinct with constant expression + limit 

#

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;

SELECT FOUND_ROWS();

DROP TABLE t1;

# End of 4.1 tests