MDEV-3798: EXPLAIN UPDATE/DELETE:

Backport mysql-test/t/myisam_explain_non_select_all.test from mysql-5.6 - the .result file was modified because MariaDB choses different query plans in a number cases. Also, we don't have some of the "incorrect EXPLAIN output" bugs that they still have. The .test file and includes were taken verbatim with one exception: two tests were disabled with --disable parsing: 1. @@sql_safe_updates is not enforced EXPLAINs of multitable updates. In MariaDB, the execution itself will produce ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE, but EXPLAIN won't. 2. Their case #71 hits some old bug in MyISAM (See their comments in explain_non_select.inc for details).

MDEV-3798: EXPLAIN UPDATE/DELETE:
Backport mysql-test/t/myisam_explain_non_select_all.test from mysql-5.6 - the .result file was modified because MariaDB choses different query plans in a number cases. Also, we don't have some of the "incorrect EXPLAIN output" bugs that they still have. The .test file and includes were taken verbatim with one exception: two tests were disabled with --disable parsing: 1. @@sql_safe_updates is not enforced EXPLAINs of multitable updates. In MariaDB, the execution itself will produce ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE, but EXPLAIN won't. 2. Their case #71 hits some old bug in MyISAM (See their comments in explain_non_select.inc for details).
582ecb2a · Sergey Petrunya · 7e919c52 · 582ecb2a · 582ecb2a · 582ecb2a
Commit 582ecb2a authored Oct 09, 2013 by Sergey Petrunya
4 changed files
--- a/mysql-test/include/explain_non_select.inc
+++ b/mysql-test/include/explain_non_select.inc
+# 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;
+
+--disable_parsing
+--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;
+--enable_parsing
+
+--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;
+
+--disable_parsing
+--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;
+--enable_parsing
+
+--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
--- a/mysql-test/include/explain_utils.inc
+++ b/mysql-test/include/explain_utils.inc
+# This file is a collection of utility tests
+# for WL#4897: Add EXPLAIN INSERT/UPDATE/DELETE.
+#
+# Since MTR doesn't have functions, we use this file instead
+# including it many times.
+#
+# Parameters:
+#
+#  $query:   INSERT/REPLACE/UPDATE/DELETE query to explain
+#            NOTE: this file resets this variable
+#
+#  $select:  may be empty; the SELECT query similar to $query
+#            We use it to compare:
+#              1) table data before and after EXPLAIN $query evaluation;
+#              2) EXPLAIN $query and EXPLAIN $select output and
+#                 handler/filesort statistics
+#            NOTE: this file resets this variable
+#  $innodb:  take $no_rows parameter into account if not 0;
+#  $no_rows: filter out "rows" and "filtered" columns of EXPLAIN if not 0;
+#            it may be necessary for InnoDB tables since InnoDB's table row
+#            counter can't return precise and repeatable values;
+#	     NOTE: ANALYZE TABLE doesn't help
+#            NOTE: this file resets this variable
+
+--echo #
+--echo # query:  $query
+--echo # select: $select
+--echo #
+
+if ($select) {
+--disable_query_log
+--eval $select INTO OUTFILE '$MYSQLTEST_VARDIR/tmp/before_explain.txt'
+--enable_query_log
+}
+
+if ($innodb) {
+  if ($no_rows) {
+--replace_column 9 X
+  }
+}
+--eval EXPLAIN $query
+if (`SELECT ROW_COUNT() > 0`) {
+--echo # Erroneous query: EXPLAIN $query
+--die Unexpected ROW_COUNT() <> 0
+}
+
+FLUSH STATUS;
+FLUSH TABLES;
+if ($innodb) {
+  if ($no_rows) {
+--replace_column 9 X 10 X
+  }
+}
+--eval EXPLAIN EXTENDED $query
+if (`SELECT ROW_COUNT() > 0`) {
+--echo # Erroneous query: EXPLAIN EXTENDED $query
+--die Unexpected ROW_COUNT() <> 0
+}
+--echo # Status of EXPLAIN EXTENDED query
+--disable_query_log
+SHOW STATUS WHERE (Variable_name LIKE 'Sort%' OR
+                   Variable_name LIKE 'Handler_read_%' OR
+                   Variable_name = 'Handler_write' OR
+                   Variable_name = 'Handler_update' OR
+                   Variable_name = 'Handler_delete') AND Value <> 0;
+--enable_query_log
+
+if ($json) {
+if ($innodb) {
+  if ($no_rows) {
+--replace_regex /"rows": [0-9]+/"rows": "X"/ /"filtered": [0-9.]+/"filtered": "X"/
+  }
+}
+--eval EXPLAIN FORMAT=JSON $query;
+if ($validation) {
+--disable_query_log
+--replace_result $MASTER_MYSOCK MASTER_MYSOCK
+--exec $MYSQL -S $MASTER_MYSOCK -u root -r test -e "EXPLAIN FORMAT=JSON $query;" > $MYSQLTEST_VARDIR/tmp/explain.json
+--replace_regex  /[-]*// /FILE.[\/\\:_\.0-9A-Za-z]*/Validation:/
+--exec python $MYSQL_TEST_DIR/suite/opt_trace/validate_json.py $MYSQLTEST_VARDIR/tmp/explain.json 
+--remove_file '$MYSQLTEST_VARDIR/tmp/explain.json'
+--enable_query_log
+}
+}
+
+if ($select) {
+FLUSH STATUS;
+FLUSH TABLES;
+if ($innodb) {
+  if ($no_rows) {
+--replace_column 9 X 10 X
+  }
+}
+--eval EXPLAIN EXTENDED $select
+--echo # Status of EXPLAIN EXTENDED "equivalent" SELECT query execution
+--disable_query_log
+SHOW STATUS WHERE (Variable_name LIKE 'Sort%' OR
+                   Variable_name LIKE 'Handler_read_%' OR
+                   Variable_name = 'Handler_write' OR
+                   Variable_name = 'Handler_update' OR
+                   Variable_name = 'Handler_delete') AND Value <> 0;
+--enable_query_log
+if ($json) {
+if ($innodb) {
+  if ($no_rows) {
+--replace_regex /"rows": [0-9]+/"rows": "X"/ /"filtered": [0-9.]+/"filtered": "X"/
+  }
+}
+--eval EXPLAIN FORMAT=JSON $select;
+if ($validation) {
+--disable_query_log
+--replace_result $MASTER_MYSOCK MASTER_MYSOCK
+--exec $MYSQL -S $MASTER_MYSOCK -u root -r test -e "EXPLAIN FORMAT=JSON $select;" > $MYSQLTEST_VARDIR/tmp/explain.json
+--replace_regex  /[-]*// /FILE.[\/\\:_\.0-9A-Za-z]*/Validation:/
+--exec python $MYSQL_TEST_DIR/suite/opt_trace/validate_json.py $MYSQLTEST_VARDIR/tmp/explain.json 
+--remove_file '$MYSQLTEST_VARDIR/tmp/explain.json'
+--enable_query_log
+}
+}
+}
+
+--disable_query_log
+
+if ($select) {
+--eval $select INTO OUTFILE '$MYSQLTEST_VARDIR/tmp/after_explain.txt'
+--diff_files '$MYSQLTEST_VARDIR/tmp/before_explain.txt' '$MYSQLTEST_VARDIR/tmp/after_explain.txt'
+--remove_file '$MYSQLTEST_VARDIR/tmp/before_explain.txt'
+--remove_file '$MYSQLTEST_VARDIR/tmp/after_explain.txt'
+}
+
+FLUSH STATUS;
+FLUSH TABLES;
+if ($select) {
+--disable_result_log
+--eval $select
+--enable_result_log
+--echo # Status of "equivalent" SELECT query execution:
+SHOW STATUS WHERE (Variable_name LIKE 'Sort%' OR
+                   Variable_name LIKE 'Handler_read_%' OR
+                   Variable_name = 'Handler_write' OR
+                   Variable_name = 'Handler_update' OR
+                   Variable_name = 'Handler_delete') AND Value <> 0;
+}
+
+FLUSH STATUS;
+FLUSH TABLES;
+--eval $query
+--echo # Status of testing query execution:
+SHOW STATUS WHERE (Variable_name LIKE 'Sort%' OR
+                   Variable_name LIKE 'Handler_read_%' OR
+                   Variable_name = 'Handler_write' OR
+                   Variable_name = 'Handler_update' OR
+                   Variable_name = 'Handler_delete') AND Value <> 0;
+
+--let $query=
+--let $select=
+--let $no_rows=
+
+--enable_query_log
+
+--echo
--- a/mysql-test/r/myisam_explain_non_select_all.result
+++ b/mysql-test/r/myisam_explain_non_select_all.result
--- a/mysql-test/t/myisam_explain_non_select_all.test
+++ b/mysql-test/t/myisam_explain_non_select_all.test
+# 
+# Run explain_non_select.inc on MyISAM with all of the so-called 6.0 features.
+#
+
+#--source include/have_semijoin.inc
+#--source include/have_materialization.inc
+#--source include/have_firstmatch.inc
+#--source include/have_loosescan.inc
+#--source include/have_index_condition_pushdown.inc
+#--source include/have_mrr.inc
+
+#set optimizer_switch='semijoin=on,materialization=on,firstmatch=on,loosescan=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=off';
+
+set @save_storage_engine= @@session.default_storage_engine;
+set session default_storage_engine = MyISAM;
+--let $json = 0
+--let $validation = 0
+--source include/explain_non_select.inc
+set default_storage_engine= @save_storage_engine;
+
+set optimizer_switch=default;