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single_delete_update.test
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# # Single table specific update/delete tests (mysql_update and mysql_delete) # --echo # --echo # Bug #30584: delete with order by and limit clauses does not use --echo # limit efficiently --echo # CREATE TABLE t1 (i INT); INSERT INTO t1 VALUES (10),(11),(12),(13),(14),(15),(16),(17),(18),(19), (20),(21),(22),(23),(24),(25),(26),(27),(28),(29), (30),(31),(32),(33),(34),(35); CREATE TABLE t2(a INT, i INT PRIMARY KEY); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # index on field prefix: --echo # CREATE TABLE t2(a INT, i CHAR(2), INDEX(i(1))); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # constant inside ORDER BY list, should use filesort --echo # on a small table --echo # CREATE TABLE t2(a INT, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; let $cnt = `SELECT COUNT(*) FROM t2 WHERE b = 10`; FLUSH STATUS; DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --echo ## should be 5 (previous LIMIT) eval SELECT $cnt - COUNT(*) FROM t2 WHERE b = 10; DROP TABLE t2; --echo # --echo # same test as above (constant inside ORDER BY list), but with --echo # a larger table - should not use filesort --echo # CREATE TABLE t2(a INT, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; INSERT INTO t2 (a, b, c) SELECT t1.i, t1.i, t1.i FROM t1, t1 x1, t1 x2; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; let $cnt = `SELECT COUNT(*) FROM t2 WHERE b = 10`; FLUSH STATUS; DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --echo ## should be 5 (previous LIMIT) eval SELECT $cnt - COUNT(*) FROM t2 WHERE b = 10; DROP TABLE t2; --echo # --echo # as above + partial index, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), d CHAR(2), INDEX (a,b(1),c)); INSERT INTO t2 SELECT i, i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # as above but index is without HA_READ_ORDER flag, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), d CHAR(2), INDEX (a,b,c)) ENGINE=HEAP; INSERT INTO t2 SELECT i, i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # quick select is Index Merge, should use filesort --echo # CREATE TABLE t2 (i INT, key1 INT, key2 INT, INDEX (key1), INDEX (key2)) ENGINE= MyISAM; INSERT INTO t2 (key1, key2) SELECT i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --replace_column 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x EXPLAIN EXTENDED SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; FLUSH STATUS; DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; --replace_column 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x EXPLAIN EXTENDED SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; DROP TABLE t2; --echo # --echo # reverse quick select, should not use filesort --echo # CREATE TABLE t2(a INT, i INT PRIMARY KEY); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # mixed sorting direction, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 SELECT i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 ORDER BY a, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 ORDER BY a, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 ORDER BY a, b DESC; DROP TABLE t2; --echo # --echo # LIMIT with no WHERE and DESC direction, should not use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 (a, b) SELECT i, i FROM t1; INSERT INTO t2 (a, b) SELECT t1.i, t1.i FROM t1, t1 x1, t1 x2; FLUSH STATUS; SELECT * FROM t2 ORDER BY a, b LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; SELECT * FROM t2 ORDER BY a DESC, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE c = 10 ORDER BY a DESC, b DESC; DROP TABLE t1, t2; --echo # --echo # Bug #36569: UPDATE ... WHERE ... ORDER BY... always does a filesort --echo # even if not required --echo # CREATE TABLE t1 (i INT); INSERT INTO t1 VALUES (10),(11),(12),(13),(14),(15),(16),(17),(18),(19), (20),(21),(22),(23),(24),(25),(26),(27),(28),(29), (30),(31),(32),(33),(34),(35); CREATE TABLE t2(a INT, i INT PRIMARY KEY); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # index on field prefix: --echo # CREATE TABLE t2(a INT, i CHAR(2), INDEX(i(1))); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # constant inside ORDER BY list, should use filesort --echo # on a small table --echo # CREATE TABLE t2(a INT, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; let $cnt = `SELECT COUNT(*) FROM t2 WHERE b = 10`; FLUSH STATUS; UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --echo ## should be 5 (previous LIMIT) SELECT COUNT(*) FROM t2 WHERE b = 10 AND d = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # same test as above (constant inside ORDER BY list), but with --echo # a larger table - should not use filesort --echo # CREATE TABLE t2(a INT, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; INSERT INTO t2 (a, b, c) SELECT t1.i, t1.i, t1.i FROM t1, t1 x1, t1 x2; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; let $cnt = `SELECT COUNT(*) FROM t2 WHERE b = 10`; FLUSH STATUS; UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --echo ## should be 5 (previous LIMIT) SELECT COUNT(*) FROM t2 WHERE b = 10 AND d = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # as above + partial index, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), d CHAR(2), INDEX (a,b(1),c)); INSERT INTO t2 SELECT i, i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # as above but index is without HA_READ_ORDER flag, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), d CHAR(2), INDEX (a,b,c)) ENGINE=HEAP; INSERT INTO t2 SELECT i, i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE b = 10 ORDER BY a, c; DROP TABLE t2; --echo # --echo # quick select is Index Merge, should use filesort --echo # CREATE TABLE t2 (i INT, key1 INT, key2 INT, INDEX (key1), INDEX (key2)) ENGINE= MyISAM; INSERT INTO t2 (key1, key2) SELECT i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; --replace_column 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x EXPLAIN EXTENDED SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; FLUSH STATUS; UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; --replace_column 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x EXPLAIN EXTENDED SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1; DROP TABLE t2; --echo # --echo # reverse quick select, should not use filesort --echo # CREATE TABLE t2(a INT, i INT PRIMARY KEY); INSERT INTO t2 (i) SELECT i FROM t1; FLUSH STATUS; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i; DROP TABLE t2; --echo # --echo # mixed sorting direction, should use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 SELECT i, i, i FROM t1; FLUSH STATUS; SELECT * FROM t2 ORDER BY a, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE c = 10 ORDER BY a, b DESC; DROP TABLE t2; --echo # --echo # LIMIT with no WHERE and DESC direction, should not use filesort --echo # CREATE TABLE t2 (a CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 (a, b) SELECT i, i FROM t1; INSERT INTO t2 (a, b) SELECT t1.i, t1.i FROM t1, t1 x1, t1 x2; FLUSH STATUS; SELECT * FROM t2 ORDER BY a, b LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; SELECT * FROM t2 ORDER BY a DESC, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; FLUSH STATUS; UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5; SHOW SESSION STATUS LIKE 'Sort%'; SHOW STATUS LIKE 'Handler_read_%'; SELECT * FROM t2 WHERE c = 10 ORDER BY a DESC, b DESC; DROP TABLE t1, t2; --echo # --echo # Bug #53742: UPDATEs have no effect after applying patch for bug 36569 --echo # --disable_warnings CREATE TABLE t1 ( pk INT NOT NULL AUTO_INCREMENT, c1_idx CHAR(1) DEFAULT 'y', c2 INT, PRIMARY KEY (pk), INDEX c1_idx (c1_idx) ) ENGINE=InnoDB; --enable_warnings INSERT INTO t1 VALUES (), (), (), (); SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC; DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC; DROP TABLE t1;