| Current Path : /home/usr.opt/mysql57/mysql-test/r/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //home/usr.opt/mysql57/mysql-test/r/handler_read_last.result |
DROP TABLE IF EXISTS t1; CREATE TABLE t1 (a INT, INDEX (a)); INSERT INTO t1 VALUES (),(),(),(),(),(),(),(),(),(); FLUSH STATUS; SELECT a FROM t1 ORDER BY a LIMIT 1; a NULL SHOW STATUS LIKE 'HANDLER_READ%'; Variable_name Value Handler_read_first 1 Handler_read_key 0 Handler_read_last 0 Handler_read_next 0 Handler_read_prev 0 Handler_read_rnd 0 Handler_read_rnd_next 0 FLUSH STATUS; SELECT a FROM t1 ORDER BY a DESC LIMIT 1; a NULL SHOW STATUS LIKE 'HANDLER_READ%'; Variable_name Value Handler_read_first 0 Handler_read_key 0 Handler_read_last 1 Handler_read_next 0 Handler_read_prev 0 Handler_read_rnd 0 Handler_read_rnd_next 0 FLUSH STATUS; SELECT a FROM t1 ORDER BY a LIMIT 3; a NULL NULL NULL SHOW STATUS LIKE 'HANDLER_READ%'; Variable_name Value Handler_read_first 1 Handler_read_key 0 Handler_read_last 0 Handler_read_next 2 Handler_read_prev 0 Handler_read_rnd 0 Handler_read_rnd_next 0 FLUSH STATUS; SELECT a FROM t1 ORDER BY a DESC LIMIT 3; a NULL NULL NULL SHOW STATUS LIKE 'HANDLER_READ%'; Variable_name Value Handler_read_first 0 Handler_read_key 0 Handler_read_last 1 Handler_read_next 0 Handler_read_prev 2 Handler_read_rnd 0 Handler_read_rnd_next 0 DROP TABLE t1;