Edit File: order_by_sortkey.result
CREATE TABLE t1( f0 int auto_increment PRIMARY KEY, f1 int, f2 varchar(200) ); INSERT INTO t1(f1, f2) VALUES (0,"0"),(1,"1"),(2,"2"),(3,"3"),(4,"4"),(5,"5"), (6,"6"),(7,"7"),(8,"8"),(9,"9"),(10,"10"), (11,"11"),(12,"12"),(13,"13"),(14,"14"),(15,"15"), (16,"16"),(17,"17"),(18,"18"),(19,"19"),(20,"20"), (21,"21"),(22,"22"),(23,"23"),(24,"24"),(25,"25"), (26,"26"),(27,"27"),(28,"28"),(29,"29"),(30,"30"), (31,"31"),(32,"32"),(33,"33"),(34,"34"),(35,"35"), (36,"36"),(37,"37"),(38,"38"),(39,"39"),(40,"40"), (41,"41"),(42,"42"),(43,"43"),(44,"44"),(45,"45"), (46,"46"),(47,"47"),(48,"48"),(49,"49"),(50,"50"), (51,"51"),(52,"52"),(53,"53"),(54,"54"),(55,"55"), (56,"56"),(57,"57"),(58,"58"),(59,"59"),(60,"60"), (61,"61"),(62,"62"),(63,"63"),(64,"64"),(65,"65"), (66,"66"),(67,"67"),(68,"68"),(69,"69"),(70,"70"), (71,"71"),(72,"72"),(73,"73"),(74,"74"),(75,"75"), (76,"76"),(77,"77"),(78,"78"),(79,"79"),(80,"80"), (81,"81"),(82,"82"),(83,"83"),(84,"84"),(85,"85"), (86,"86"),(87,"87"),(88,"88"),(89,"89"),(90,"90"), (91,"91"),(92,"92"),(93,"93"),(94,"94"),(95,"95"), (96,"96"),(97,"97"),(98,"98"),(99,"99"); CREATE TEMPORARY TABLE tmp (f1 int, f2 varchar(20)); INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; INSERT INTO tmp SELECT f1,f2 FROM t1; INSERT INTO t1(f1,f2) SELECT * FROM tmp; set sort_buffer_size= 32768; FLUSH STATUS; SHOW SESSION STATUS LIKE 'Sort%'; Variable_name Value Sort_merge_passes 0 Sort_range 0 Sort_rows 0 Sort_scan 0 SELECT * FROM t1 ORDER BY f2 LIMIT 100; f0 f1 f2 1 0 0 101 0 0 201 0 0 301 0 0 401 0 0 501 0 0 601 0 0 701 0 0 801 0 0 901 0 0 1001 0 0 1101 0 0 1201 0 0 1301 0 0 1401 0 0 1501 0 0 1601 0 0 1701 0 0 1801 0 0 1901 0 0 2001 0 0 2101 0 0 2201 0 0 2301 0 0 2401 0 0 2501 0 0 2601 0 0 2701 0 0 2801 0 0 2901 0 0 3001 0 0 3101 0 0 3201 0 0 3301 0 0 3401 0 0 3501 0 0 3601 0 0 3701 0 0 3801 0 0 3901 0 0 4001 0 0 4101 0 0 4201 0 0 4301 0 0 4401 0 0 4501 0 0 4601 0 0 4701 0 0 4801 0 0 4901 0 0 5001 0 0 5101 0 0 5201 0 0 5301 0 0 5401 0 0 5501 0 0 5601 0 0 5701 0 0 5801 0 0 5901 0 0 6001 0 0 6101 0 0 6201 0 0 6301 0 0 6401 0 0 6501 0 0 6601 0 0 6701 0 0 6801 0 0 6901 0 0 7001 0 0 7101 0 0 7201 0 0 7301 0 0 7401 0 0 7501 0 0 7601 0 0 7701 0 0 7801 0 0 7901 0 0 8001 0 0 8101 0 0 8201 0 0 8301 0 0 8401 0 0 8501 0 0 8601 0 0 8701 0 0 8801 0 0 8901 0 0 9001 0 0 9101 0 0 9201 0 0 9301 0 0 9401 0 0 9501 0 0 9601 0 0 9701 0 0 9801 0 0 9901 0 0 SHOW SESSION STATUS LIKE 'Sort%'; Variable_name Value Sort_merge_passes 0 Sort_range 0 Sort_rows 100 Sort_scan 1 DROP TABLE t1, tmp;