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# 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 # Test query expressions with LIMIT and/or OFFSET: CREATE TABLE t1(a INTEGER); INSERT INTO t1 VALUES(11),(12),(13),(14),(15),(16),(17),(18),(19); CREATE TABLE t2(a INTEGER); INSERT INTO t2 VALUES(21),(22),(23),(24),(25),(26),(27); SELECT * FROM t1 LIMIT 6; SELECT * FROM t1 LIMIT 5 OFFSET 1; (SELECT * FROM t1 LIMIT 7) ORDER BY a DESC LIMIT 4; (SELECT * FROM t1 LIMIT 7 OFFSET 1) ORDER BY a DESC LIMIT 4 OFFSET 2; (SELECT * FROM t1 ORDER BY a DESC LIMIT 7) ORDER BY a LIMIT 4; (SELECT * FROM t1 ORDER BY a DESC LIMIT 7 OFFSET 1) ORDER BY a LIMIT 4 OFFSET 2; SELECT * FROM t1 UNION SELECT * FROM t2 LIMIT 5; SELECT * FROM t1 UNION SELECT * FROM t2 LIMIT 5 OFFSET 6; SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY a LIMIT 5; SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY a LIMIT 5 OFFSET 6; SELECT * FROM t1 UNION ALL SELECT * FROM t2 LIMIT 5; SELECT * FROM t1 UNION ALL SELECT * FROM t2 LIMIT 5 OFFSET 6; SELECT * FROM t1 UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 5; SELECT * FROM t1 UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 5 OFFSET 6; (SELECT * FROM t1 LIMIT 5) UNION SELECT * FROM t2 LIMIT 8; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION SELECT * FROM t2 LIMIT 8 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION SELECT * FROM t2 LIMIT 8; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION SELECT * FROM t2 LIMIT 8 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION SELECT * FROM t2 ORDER BY a LIMIT 8; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION SELECT * FROM t2 ORDER BY a LIMIT 8 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION SELECT * FROM t2 ORDER BY a LIMIT 8; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION SELECT * FROM t2 ORDER BY a LIMIT 8 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION ALL SELECT * FROM t2 LIMIT 8; --echo # Wrong result, should be 16-19, 21-24 (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION ALL SELECT * FROM t2 LIMIT 8 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION ALL SELECT * FROM t2 LIMIT 8; --echo # Wrong result, should be 14-11, 21-24 (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION ALL SELECT * FROM t2 LIMIT 8 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 8; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 8 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 8; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION ALL SELECT * FROM t2 ORDER BY a LIMIT 8 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION (SELECT * FROM t2 LIMIT 4) LIMIT 7; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION (SELECT * FROM t2 LIMIT 4 OFFSET 2) LIMIT 7 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION (SELECT * FROM t2 ORDER BY a DESC LIMIT 4) LIMIT 7; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION (SELECT * FROM t2 ORDER BY a DESC LIMIT 4 OFFSET 2) LIMIT 7 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION (SELECT * FROM t2 LIMIT 4) ORDER BY a LIMIT 7; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION (SELECT * FROM t2 LIMIT 4 OFFSET 2) ORDER BY a LIMIT 7 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION (SELECT * FROM t2 ORDER BY a DESC LIMIT 4) ORDER BY a LIMIT 7; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION (SELECT * FROM t2 ORDER BY a DESC LIMIT 4 OFFSET 2) ORDER BY a LIMIT 7 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION ALL (SELECT * FROM t2 LIMIT 4) LIMIT 7; --echo # Wrong result, should be 16-19, 23-25 (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION ALL (SELECT * FROM t2 LIMIT 4 OFFSET 2) LIMIT 7 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION ALL (SELECT * FROM t2 ORDER BY a DESC LIMIT 4) LIMIT 7; --echo # Wrong result, should be 14-11, 25-23 (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION ALL (SELECT * FROM t2 ORDER BY a DESC LIMIT 4 OFFSET 2) LIMIT 7 OFFSET 1; (SELECT * FROM t1 LIMIT 5) UNION ALL (SELECT * FROM t2 LIMIT 4) ORDER BY a LIMIT 7; (SELECT * FROM t1 LIMIT 5 OFFSET 4) UNION ALL (SELECT * FROM t2 LIMIT 4 OFFSET 2) ORDER BY a LIMIT 7 OFFSET 1; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5) UNION ALL (SELECT * FROM t2 ORDER BY a DESC LIMIT 4) ORDER BY a LIMIT 7; (SELECT * FROM t1 ORDER BY a DESC LIMIT 5 OFFSET 4) UNION ALL (SELECT * FROM t2 ORDER BY a DESC LIMIT 4 OFFSET 2) ORDER BY a LIMIT 7 OFFSET 1; DROP TABLE t1, t2; # # Test of update and delete with limit # 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; select * from t1; update t1 set b=4 where b=1; select * from t1; delete from t1 where b=2 limit 1; select * from t1; delete from t1 limit 1; 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; 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#8023 - limit on UNION with from DUAL, causes syntax error # create table t1 (a integer); insert into t1 values (1); # both queries must return one row select 1 as a from t1 union all select 1 from dual limit 1; (select 1 as a from t1) union all (select 1 from dual) limit 1; 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 # # Bug #28464: a string argument to 'limit ?' PS # prepare s from "select 1 limit ?"; set @a='qwe'; execute s using @a; set @a=-1; --error ER_WRONG_ARGUMENTS execute s using @a; prepare s from "select 1 limit 1, ?"; --error ER_WRONG_ARGUMENTS execute s using @a; prepare s from "select 1 limit ?, ?"; --error ER_WRONG_ARGUMENTS execute s using @a, @a; set @a=14632475938453979136; execute s using @a, @a; set @a=-14632475938453979136; --error ER_WRONG_ARGUMENTS execute s using @a, @a; --echo End of 5.0 tests # # Bug#37075: offset of limit clause might be truncated to 0 on 32-bits server w/o big tables # select 1 as a limit 4294967296,10; --echo End of 5.1 tests --echo # --echo # Bug #11747810: EXPLAIN EXTENDED SHOWS BOGUS VALUE FOR --echo # 'FILTERED' COLUMN FOR LIMIT QUERY --echo # CREATE TABLE t1 (a INT, KEY (a)) ENGINE=Myisam; INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); EXPLAIN SELECT * FROM t1 ORDER BY a LIMIT 1; DROP TABLE t1; --echo #End of test for Bug#11747810