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# This file is a collection of regression and coverage tests # for WL#4897: Add EXPLAIN INSERT/UPDATE/DELETE. -- disable_query_log -- disable_result_log SET GLOBAL innodb_stats_persistent=0; -- enable_result_log -- enable_query_log set end_markers_in_json=on; --echo #1 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = UPDATE t1 SET a = 10 WHERE a < 10 --let $select = SELECT * FROM t1 WHERE a < 10 --source include/explain_utils.inc DROP TABLE t1; --echo #2 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 WHERE a < 10 --let $select = SELECT * FROM t1 WHERE a < 10 --source include/explain_utils.inc DROP TABLE t1; --echo #3 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 USING t1 WHERE a = 1 --let $select = SELECT * FROM t1 WHERE a = 1 --source include/explain_utils.inc DROP TABLE t1; --echo #4 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1 --let $select = SELECT * FROM t1, t2 WHERE t1.a = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #5 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = 10 WHERE t11.a = 1 --let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12 WHERE t11.a = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #6 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE t2.b < 3) --let $select = SELECT * FROM t1 WHERE 1 IN (SELECT 1 FROM t2 WHERE t2.b < 3) --source include/explain_utils.inc DROP TABLE t1, t2; --echo #7 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 SET a = 10 WHERE a IN (SELECT b FROM t2 WHERE t1.a < 3) --let $select = SELECT * FROM t1 WHERE a IN (SELECT b FROM t2 WHERE t1.a < 3) --source include/explain_utils.inc DROP TABLE t1, t2; --echo #7 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1, t2 SET a = 10 WHERE a IN (SELECT b FROM t2 WHERE t2.b < 3) --let $select = SELECT * FROM t1, t2 WHERE a IN (SELECT b FROM t2 WHERE t2.b < 3) --source include/explain_utils.inc DROP TABLE t1, t2; --echo #8 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = t11.a + 10 --let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #9 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 t11, (SELECT 1 FROM DUAL) t12 SET t11.a = t11.a + 10 --let $select = SELECT * FROM t1 t11, (SELECT 1 FROM DUAL) t12 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #10 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = 10 WHERE t11.a > 1 --let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12 WHERE t11.a > 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #11 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 WHERE a > 1 LIMIT 1 --let $select = SELECT * FROM t1 WHERE a > 1 LIMIT 1 --source include/explain_utils.inc DROP TABLE t1; --echo #12 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 WHERE 0 --let $select = SELECT * FROM t1 WHERE 0 --source include/explain_utils.inc DROP TABLE t1; --echo #13 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 USING t1 WHERE 0 --let $select = SELECT * FROM t1 WHERE 0 --source include/explain_utils.inc DROP TABLE t1; --echo #14 CREATE TABLE t1 (a INT, b INT, UNIQUE KEY (a), KEY (b)); INSERT INTO t1 VALUES (3, 3), (7, 7); --let $query = DELETE FROM t1 WHERE a = 3 --let $select = SELECT * FROM t1 WHERE a = 3 --source include/explain_utils.inc DROP TABLE t1; --echo #15 CREATE TABLE t1 (a INT, b INT, UNIQUE KEY (a), KEY (b)); INSERT INTO t1 VALUES (3, 3), (7, 7); --let $query = DELETE FROM t1 WHERE a < 3 --let $select = SELECT * FROM t1 WHERE a < 3 --source include/explain_utils.inc DROP TABLE t1; --echo #16 CREATE TABLE t1 ( a int PRIMARY KEY ); --let $query = DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a --let $select = SELECT * FROM t1 WHERE t1.a > 0 ORDER BY t1.a --source include/explain_utils.inc INSERT INTO t1 VALUES (1), (2), (3); --let $query = DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a --let $select = SELECT * FROM t1 WHERE t1.a > 0 ORDER BY t1.a --source include/explain_utils.inc DROP TABLE t1; --echo #17 CREATE TABLE t1(a INT PRIMARY KEY); INSERT INTO t1 VALUES (4),(3),(1),(2); --let $query = DELETE FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1 --let $select = SELECT * FROM t1 WHERE (@a:= a) ORDER BY a LIMIT 1 --source include/explain_utils.inc DROP TABLE t1; --echo #18 CREATE TABLE t1 (a DATE, b TIME, c INT, KEY c(c), KEY b(b), KEY a(a)); INSERT INTO t1 VALUES (), (), (), (), (), (), (), (), (), (); UPDATE t1 SET a = c, b = c; --let $query = DELETE FROM t1 ORDER BY a ASC, b ASC LIMIT 1 --let $select = SELECT * FROM t1 ORDER BY a ASC, b ASC LIMIT 1 --source include/explain_utils.inc DROP TABLE t1; --echo #19 CREATE TABLE t1 (a1 INT NOT NULL, b1 INT NOT NULL); CREATE TABLE t2 (a2 INT NOT NULL, b2 INT NOT NULL, PRIMARY KEY (a2,b2)); CREATE TABLE t3 (a3 INT NOT NULL, b3 INT NOT NULL, PRIMARY KEY (a3,b3)); INSERT INTO t1 VALUES (1,1), (2,1), (1,3); INSERT INTO t2 VALUES (1,1), (2,2), (3,3); INSERT INTO t3 VALUES (1,1), (2,1), (1,3); --let $query = DELETE t1,t2,t3 FROM t1,t2,t3 WHERE a1=a2 AND b2=a3 AND b1=b3 --let $select = SELECT * FROM t1,t2,t3 WHERE a1=a2 AND b2=a3 AND b1=b3 --source include/explain_utils.inc DROP TABLE t1, t2, t3; --echo #20 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (a INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 SET a = 10 WHERE a IN (SELECT a FROM t2) --let $select = SELECT * FROM t1 WHERE a IN (SELECT a FROM t2) --source include/explain_utils.inc DROP TABLE t1, t2; --echo #21 CREATE TABLE t1 (a1 INT); INSERT INTO t1 VALUES (1), (2), (3), (4), (5); CREATE TABLE t2 (a2 VARCHAR(10)); INSERT INTO t2 VALUES (1), (2), (3), (4), (5); SET @save_optimizer_switch= @@optimizer_switch; --disable_query_log if (`select locate('semijoin', @@optimizer_switch) > 0`) { SET @@optimizer_switch= 'semijoin=off'; } --enable_query_log --let $query = DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2) --let $select = SELECT * FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2) --source include/explain_utils.inc SET @@optimizer_switch= @save_optimizer_switch; TRUNCATE t1; INSERT INTO t1 VALUES (1), (2), (3), (4), (5); --let $query = DELETE FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2) --let $select = SELECT * FROM t1 WHERE a1 IN (SELECT a2 FROM t2 WHERE a2 > 2) --source include/explain_utils.inc DROP TABLE t1, t2; --echo #22 CREATE TABLE t1 (i INT, j INT); INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); --let $query = UPDATE t1 SET i = 10 --let $select = SELECT * FROM t1 --source include/explain_utils.inc DROP TABLE t1; --echo #23 CREATE TABLE t1 (i INT, j INT); INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5); --let $query = DELETE FROM t1 --let $select = SELECT * FROM t1 --source include/explain_utils.inc DROP TABLE t1; --echo #24 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, 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; --let $query = DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #25 CREATE TABLE t1 (i INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (i INT); --let $query = INSERT INTO t2 SELECT * FROM t1 --let $select = SELECT * FROM t1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #26 CREATE TABLE t1 (i INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (i INT); --let $query = REPLACE INTO t2 SELECT * FROM t1 --let $select = SELECT * FROM t1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #27 CREATE TABLE t1 (i INT); --let $query = INSERT INTO t1 SET i = 10 --source include/explain_utils.inc DROP TABLE t1; --echo #28 CREATE TABLE t1 (i INT); --let $query = REPLACE INTO t1 SET i = 10 --source include/explain_utils.inc DROP TABLE t1; --echo #29 CREATE TABLE t1 (a INT, i INT PRIMARY KEY); INSERT INTO t1 (i) 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); --let $query = DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --let $select = SELECT * FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --source include/explain_utils.inc DROP TABLE t1; --echo #30 CREATE TABLE t1(a INT, i CHAR(2), INDEX(i(1))); INSERT INTO t1 (i) 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); --let $query = DELETE FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --let $select = SELECT * FROM t1 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --source include/explain_utils.inc DROP TABLE t1; --echo #31 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; --let $query = DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #32 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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, 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; --let $query = DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #33 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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 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; --let $query = DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #34 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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 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; --let $query = DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #35 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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),(36),(37),(38),(39), (40),(41),(42); CREATE TABLE t2 (i INT, key1 INT, key2 INT, INDEX (key1), INDEX (key2)); INSERT INTO t2 (key1, key2) SELECT i, i FROM t1; --let $query = DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1 --let $select = SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #36 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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; --let $query = DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5 --let $select = SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #37 CREATE TABLE t1 (i INT); INSERT INTO t1 (i) 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 CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 SELECT i, i, i FROM t1; --let $query = DELETE FROM t2 ORDER BY a, b DESC LIMIT 5 --let $select = SELECT * FROM t2 ORDER BY a, b DESC LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #38 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 CHAR(2), b CHAR(2), c INT, 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; --let $query = DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5 --let $select = SELECT * FROM t2 ORDER BY a DESC, b DESC LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #39 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; --let $query = UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --let $select = SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #40 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 CHAR(2), INDEX(i(1))); INSERT INTO t2 (i) SELECT i FROM t1; --let $query = UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --let $select = SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #41 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, b INT, c INT, d INT, INDEX(a, b, c)); INSERT INTO t2 (a, b, c) SELECT i, i, i FROM t1; --let $query = UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #42 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, 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; --let $query = UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #43 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 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; --let $query = UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #44 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 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; --let $query = UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5 --let $select = SELECT * FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #45 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),(36),(37),(38),(39), (40),(41),(42); CREATE TABLE t2 (i INT, key1 INT, key2 INT, INDEX (key1), INDEX (key2)); INSERT INTO t2 (key1, key2) SELECT i, i FROM t1; --let $query = UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1 --let $select = SELECT * FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #46 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; --let $query = UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5 --let $select = SELECT * FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #47 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 CHAR(2), b CHAR(2), c CHAR(2), INDEX (a, b)); INSERT INTO t2 SELECT i, i, i FROM t1; --let $query = UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5 --let $select = SELECT * FROM t2 ORDER BY a, b DESC LIMIT 5 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #48 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 CHAR(2), b CHAR(2), c INT, 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; --let $query = UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5 --let $select = SELECT * FROM t2 ORDER BY a DESC, b DESC LIMIT 5 --let $no_rows = 1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #49 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) ); INSERT INTO t1 VALUES (1,'y',1), (2,'n',2), (3,'y',3), (4,'n',4); --let $query = UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2 --let $select = SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2 --source include/explain_utils.inc --let $query = DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2 --let $select = SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2 --source include/explain_utils.inc DROP TABLE t1; --echo #50 CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY); INSERT INTO t1 VALUES (),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(); --let $query = UPDATE t1 SET a=a+10 WHERE a > 34 --let $select = SELECT * FROM t1 WHERE a > 34 --source include/explain_utils.inc DROP TABLE t1; --echo #51 CREATE TABLE t1 (c1 INT, c2 INT, c3 INT); CREATE TABLE t2 (c1 INT, c2 INT); INSERT INTO t1 VALUES (1, 1, 10), (2, 2, 20); --let $query = UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 --let $select = SELECT * FROM t1 LEFT JOIN t2 ON t1.c1 = t2.c1 --source include/explain_utils.inc --let $query = UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c1 SET t2.c2 = 10 WHERE t1.c3 = 10 --let $select = SELECT * FROM t1 LEFT JOIN t2 ON t1.c1 = t2.c1 WHERE t1.c3 = 10 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #52 CREATE TABLE t1(f1 INT, f2 INT); CREATE TABLE t2(f3 INT, f4 INT); CREATE INDEX IDX ON t2(f3); INSERT INTO t1 VALUES(1,0),(2,0); INSERT INTO t2 VALUES(1,1),(2,2); --let $query = UPDATE t1 SET t1.f2=(SELECT MAX(t2.f4) FROM t2 WHERE t2.f3=t1.f1) --let $select = SELECT (SELECT MAX(t2.f4) FROM t2 WHERE t2.f3=t1.f1) FROM t1 --source include/explain_utils.inc DROP TABLE t1, t2; --echo #55 CREATE TABLE t1(a INT); INSERT INTO t1 VALUES (1); SET @a = NULL; EXPLAIN DELETE FROM t1 WHERE (@a:= a); if (`SELECT @a IS NOT NULL`) { die Unexpectedly modified user variable; } DROP TABLE t1; --echo #56 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); --error ER_BAD_FIELD_ERROR DELETE FROM t1 USING t1 WHERE uknown_column = 12345; --error ER_BAD_FIELD_ERROR EXPLAIN EXTENDED DELETE FROM t1 USING t1 WHERE uknown_column = 12345; DROP TABLE t1; --echo #57 CREATE TABLE t1(f1 INT); --error ER_BAD_FIELD_ERROR EXPLAIN EXTENDED UPDATE t1 SET f2=1 ORDER BY f2; --error ER_BAD_FIELD_ERROR UPDATE t1 SET f2=1 ORDER BY f2; DROP TABLE t1; --echo #59 CREATE TABLE t1 ( a INT, KEY( a ) ); INSERT INTO t1 VALUES (0), (1); CREATE VIEW v1 AS SELECT t11.a, t12.a AS b FROM t1 t11, t1 t12; SET SESSION sql_safe_updates = 1; --error ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE EXPLAIN EXTENDED UPDATE IGNORE v1 SET a = 1; --error ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE UPDATE IGNORE v1 SET a = 1; SET SESSION sql_safe_updates = DEFAULT; DROP TABLE t1; DROP VIEW v1; --echo #62 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (0), (1); CREATE VIEW v1 AS SELECT t11.a, t12.a AS b FROM t1 t11, t1 t12; --let $query = UPDATE v1 SET a = 1 WHERE a > 0 --let $select = SELECT * FROM v1 WHERE a > 0 --source include/explain_utils.inc --let $query = UPDATE t1, v1 SET v1.a = 1 WHERE t1.a = v1.a --let $select = SELECT * FROM t1, v1 WHERE t1.a = v1.a --source include/explain_utils.inc DROP TABLE t1; DROP VIEW v1; --echo #63 CREATE TABLE t1 (a INT, PRIMARY KEY(a)); INSERT INTO t1 VALUES (1), (2), (3), (4), (5); CREATE VIEW v1 (a) AS SELECT a FROM t1; --let $query = DELETE FROM v1 WHERE a < 4 --let $select = SELECT * FROM v1 WHERE a < 4 --source include/explain_utils.inc DROP TABLE t1; DROP VIEW v1; --echo #64 CREATE TABLE t1 (a INT, b INT, PRIMARY KEY(a)); INSERT INTO t1 VALUES (1,2), (2,3), (3,4), (4,5), (5,10); CREATE TABLE t2 (x INT); INSERT INTO t2 VALUES (1), (2), (3), (4); CREATE VIEW v1 (a,c) AS SELECT a, b+1 FROM t1; --let $query = DELETE v1 FROM t2, v1 WHERE t2.x = v1.a --let $select = SELECT * FROM t2, v1 WHERE t2.x = v1.a --source include/explain_utils.inc DROP TABLE t1,t2; DROP VIEW v1; --echo #65 CREATE TABLE t1 (a INT, b INT, PRIMARY KEY(a)); INSERT INTO t1 VALUES (1,2), (2,3), (3,4), (4,5), (5,10); CREATE TABLE t2 (x INT); INSERT INTO t2 VALUES (1), (2), (3), (4); CREATE VIEW v1 (a,c) AS SELECT a, b+1 FROM t1; --let $query = DELETE v1 FROM t2, v1 WHERE t2.x = v1.a --let $select = SELECT * FROM t2, v1 WHERE t2.x = v1.a --source include/explain_utils.inc DROP TABLE t1,t2; DROP VIEW v1; --echo #66 CREATE TABLE t1 (a INT); CREATE VIEW v1 (x) AS SELECT a FROM t1; --let $query = INSERT INTO v1 VALUES (10) --let $select = SELECT NULL --source include/explain_utils.inc DROP TABLE t1; DROP VIEW v1; --echo #67 CREATE TABLE t1 (a INT); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); CREATE VIEW v1 (x) AS SELECT b FROM t2; --let $query = INSERT INTO v1 SELECT * FROM t1 --let $select = SELECT * FROM t1 --source include/explain_utils.inc DROP TABLE t1, t2; DROP VIEW v1; --echo #68 CREATE TABLE t1 (i INT); EXPLAIN INSERT DELAYED INTO t1 VALUES (1); DROP TABLE t1; --echo #69 CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (b INT); INSERT INTO t2 VALUES (1), (2), (3); --let $query = UPDATE t1 SET a = 10 WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --let $select = SELECT * FROM t1 WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --source include/explain_utils.inc --let $query = UPDATE t1, t2 SET a = 10 WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --let $select = SELECT * FROM t1, t2 WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --source include/explain_utils.inc --let $query = UPDATE t1, (SELECT * FROM t2) y SET a = 10 WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --let $select = SELECT * FROM t1, (SELECT * FROM t2) y WHERE a IN (SELECT * FROM (SELECT b FROM t2 ORDER BY b LIMIT 2,2) x) --source include/explain_utils.inc DROP TABLE t1,t2; --echo #70 CREATE TABLE t1 (c1 INT KEY); CREATE TABLE t2 (c2 INT); CREATE TABLE t3 (c3 INT); EXPLAIN EXTENDED UPDATE t3 SET c3 = ( SELECT COUNT(d1.c1) FROM ( SELECT a11.c1 FROM t1 AS a11 STRAIGHT_JOIN t2 AS a21 ON a21.c2 = a11.c1 JOIN t1 AS a12 ON a12.c1 = a11.c1 ) d1 ); DROP TABLE t1, t2, t3; --echo #71 # # Bug: after EXPLAIN bulk INSERT...SELECT and bulk INSERT...SELECT # to a # MyISAM table the SELECT query may fail with the # "1030: Got error 124 from storage engine" error message. # CREATE TABLE t1 (c1 INT NOT NULL, c2 INT NOT NULL, INDEX i1(c1)); INSERT INTO t1 VALUES (1,0),(2,0),(3,0),(4,0),(5,0),(6,0),(7,0),(8,0); --disable_query_log let $1=7; SET @d=8; while ($1) { eval INSERT INTO t1 SELECT c1 + @d, c2 + @d FROM t1; eval SET @d = @d*2; dec $1; } --enable_query_log CREATE TABLE t2 LIKE t1; # replace "rows" column for InnoDB --replace_column 9 X EXPLAIN INSERT INTO t2 SELECT * FROM t1; INSERT INTO t2 SELECT * FROM t1; --disable_result_log SELECT * FROM t1 LEFT JOIN t2 ON t1.c1 = t2.c1; --enable_result_log DROP TABLE t1, t2; --echo #73 CREATE TABLE t1 (id INT); CREATE TABLE t2 (id INT); INSERT INTO t1 VALUES (1), (2); EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USING(id) GROUP BY t1.id; DROP TABLE t1,t2; --echo #74 CREATE TABLE t1(a INT PRIMARY KEY) ENGINE=InnoDB; INSERT INTO t1 VALUES (1), (2), (3), (4), (5); --echo # used key is modified & Using temporary --let $query = UPDATE t1 SET a=a+1 WHERE a>10 --let $select = SELECT a t1 FROM t1 WHERE a>10 --source include/explain_utils.inc --echo # used key is modified & Using filesort --let $query = UPDATE t1 SET a=a+1 WHERE a>10 ORDER BY a+20 --let $select = SELECT a t1 FROM t1 WHERE a>10 ORDER BY a+20 --source include/explain_utils.inc DROP TABLE t1; --echo # --echo # Bug #12949629: CLIENT LOSES CONNECTION AFTER EXECUTING A PROCEDURE WITH --echo # EXPLAIN UPDATE/DEL/INS --echo # CREATE TABLE t1 (i INT); CREATE TABLE t2 (i INT); --delimiter | CREATE PROCEDURE p1() BEGIN EXPLAIN INSERT INTO t1 VALUES (1);END| CREATE PROCEDURE p2() BEGIN INSERT INTO t1 VALUES (1);END| CREATE PROCEDURE p3() BEGIN EXPLAIN INSERT INTO t1 SELECT 1;END| CREATE PROCEDURE p4() BEGIN INSERT INTO t1 SELECT 1;END| CREATE PROCEDURE p5() BEGIN EXPLAIN REPLACE INTO t1 VALUES (1);END| CREATE PROCEDURE p6() BEGIN REPLACE INTO t1 VALUES (1);END| CREATE PROCEDURE p7() BEGIN EXPLAIN REPLACE INTO t1 SELECT 1;END| CREATE PROCEDURE p8() BEGIN REPLACE INTO t1 SELECT 1;END| CREATE PROCEDURE p9() BEGIN EXPLAIN UPDATE t1 SET i = 10;END| CREATE PROCEDURE p10() BEGIN UPDATE t1 SET i = 10;END| CREATE PROCEDURE p11() BEGIN EXPLAIN UPDATE t1,t2 SET t1.i = 10 WHERE t1.i = t2.i ;END| CREATE PROCEDURE p12() BEGIN UPDATE t1,t2 SET t1.i = 10 WHERE t1.i = t2.i ;END| CREATE PROCEDURE p13() BEGIN EXPLAIN DELETE FROM t1;END| CREATE PROCEDURE p14() BEGIN DELETE FROM t1;END| CREATE PROCEDURE p15() BEGIN EXPLAIN DELETE FROM t1 USING t1;END| CREATE PROCEDURE p16() BEGIN DELETE FROM t1 USING t1;END| --delimiter ; let $i=16; while($i) { eval CALL p$i(); eval DROP PROCEDURE p$i; dec $i; } DROP TABLE t1, t2; --echo # -- disable_query_log -- disable_result_log SET GLOBAL innodb_stats_persistent=default; -- enable_result_log -- enable_query_log