drop table if exists t1,t2; create table t1 (a int, b char(10), key a(a), key b(a,b)) engine=innodb; insert into t1 values (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"), (14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"), (20,"ggg"),(21,"hhh"),(22,"iii"); handler t1 open as t2; handler t2 read a first; a b 14 aaa handler t2 read a next; a b 15 bbb handler t2 read a next; a b 16 ccc handler t2 read a prev; a b 15 bbb handler t2 read a last; a b 22 iii handler t2 read a prev; a b 21 hhh handler t2 read a prev; a b 20 ggg handler t2 read a first; a b 14 aaa handler t2 read a prev; a b handler t2 read a last; a b 22 iii handler t2 read a prev; a b 21 hhh handler t2 read a next; a b 22 iii handler t2 read a next; a b handler t2 read a=(15); a b 15 bbb handler t2 read a=(16); a b 16 ccc handler t2 read a=(19,"fff"); ERROR 42000: Too many key parts specified. Max 1 parts allowed handler t2 read b=(19,"fff"); a b 19 fff handler t2 read b=(19,"yyy"); a b 19 yyy handler t2 read b=(19); a b 19 fff handler t1 read a last; ERROR 42S02: Unknown table 't1' in HANDLER handler t2 read a=(11); a b handler t2 read a>=(11); a b 14 aaa handler t2 read a=(18); a b 18 eee handler t2 read a>=(18); a b 18 eee handler t2 read a>(18); a b 19 fff handler t2 read a<=(18); a b 18 eee handler t2 read a<(18); a b 17 ddd handler t2 read a first limit 5; a b 14 aaa 15 bbb 16 ccc 16 xxx 17 ddd handler t2 read a next limit 3; a b 18 eee 19 fff 19 yyy handler t2 read a prev limit 10; a b 19 fff 18 eee 17 ddd 16 xxx 16 ccc 15 bbb 14 aaa handler t2 read a>=(16) limit 4; a b 16 ccc 16 xxx 17 ddd 18 eee handler t2 read a>=(16) limit 2,2; a b 17 ddd 18 eee handler t2 read a last limit 3; a b 22 iii 21 hhh 20 ggg handler t2 read a=(19); a b 19 fff handler t2 read a=(19) where b="yyy"; a b 19 yyy handler t2 read first; a b 17 ddd handler t2 read next; a b 18 eee handler t2 read last; ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 handler t2 close; handler t1 open as t2; handler t2 read first; a b 17 ddd alter table t1 engine=innodb; handler t2 read first; ERROR 42S02: Unknown table 't2' in HANDLER drop table t1; CREATE TABLE t1 ( no1 smallint(5) NOT NULL default '0', no2 int(10) NOT NULL default '0', PRIMARY KEY (no1,no2)) ENGINE=InnoDB; INSERT INTO t1 VALUES (1,274),(1,275),(2,6),(2,8),(4,1),(4,2); HANDLER t1 OPEN; HANDLER t1 READ `primary` = (1, 1000); no1 no2 HANDLER t1 READ `primary` PREV; no1 no2 1 275 DROP TABLE t1;