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Current File : //home/usr.opt/mysql57/mysql-test/t/select_found.test |
# The include statement below is a temp one for tests that are yet to #be ported to run with InnoDB, #but needs to be kept for tests that would need MyISAM in future. --source include/force_myisam_default.inc # # 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` 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) ); disable_query_log; let $1=200; let $2=0; while ($1) { inc $2; eval INSERT INTO t2 VALUES ($2,'name$2','email$2'); dec $1; } enable_query_log; --let $query=SELECT SQL_CALC_FOUND_ROWS DISTINCT email FROM t2 LEFT JOIN t1 ON kid = t2.id WHERE t1.id IS NULL LIMIT 10 --eval EXPLAIN $query FLUSH STATUS; --disable_result_log --eval $query --enable_result_log SHOW SESSION STATUS LIKE 'Sort_scan%'; --eval $query 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 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; 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 --echo # --echo # Bug #17833261 FOUND_ROWS(): DIFFERENT RESULTS FOR LOCAL LIMIT WITH AND --echo # WITHOUT OFFSET IN UNION --echo # CREATE TABLE t1 (i INT); INSERT INTO t1 VALUES (1), (2), (3), (4), (5); (SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 2 OFFSET 2) UNION ALL (SELECT 1 FROM t1 WHERE FALSE); SELECT FOUND_ROWS(); DROP TABLE t1; --echo # --echo # Bug #22155786: GET NEGATIVE FOUND_ROWS() FOR UNION STMT --echo # CREATE TABLE t1 (c1 int) ; INSERT INTO t1 VALUES (1), (2), (3), (4); (SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE false LIMIT 8, 1) UNION ALL (SELECT * FROM t1 LIMIT 4, 4); SELECT FOUND_ROWS(); DROP TABLE t1;