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MDEV-3798: [SHOW] EXPLAIN UPDATE/DELETE

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- Merge with 10.0-base
This commit is contained in:
Sergey Petrunya
2013-10-15 11:51:41 +04:00
parent eb2c6f4513 25d0175fde
commit 1e36cbfa39
71 changed files with 8292 additions and 713 deletions
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2
mysql-test/disabled.def
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@ -16,4 +16,4 @@ read_many_rows_innodb : Bug#11748886 2010-11-15 mattiasj report already exist
archive-big : Bug#11817185 2011-03-10 Anitha Disabled since this leads to timeout on Solaris Sparc
log_tables-big : Bug#11756699 2010-11-15 mattiasj report already exists
mysql_embedded : Bug#12561297 2011-05-14 Anitha Dependent on PB2 changes - eventum#41836
show_explain : Psergey: random timeout in range-checked-for-each record query.
#show_explain : Psergey: random timeout in range-checked-for-each record query.

833
mysql-test/include/explain_non_select.inc Normal file
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@ -0,0 +1,833 @@
# 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

161
mysql-test/include/explain_utils.inc Normal file
View File

@ -0,0 +1,161 @@
# 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

4
mysql-test/r/derived_opt.result
View File

@ -109,8 +109,8 @@ count(*)
2
explain select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS THEMAX ON t1.E1 = THEMAX.E2 AND t1.E1 = t1.E2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE A ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.A.E2 1 Using where
1 PRIMARY A ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.A.E2 1 Using where
3 DEPENDENT SUBQUERY B ALL NULL NULL NULL NULL 2 Using where
drop table t1;
create table t1 (a int);

14
mysql-test/r/derived_view.result
View File

@ -386,7 +386,7 @@ materialized derived in merged derived
explain extended select * from (select * from
(select * from t1 where f1 < 7 group by f1) tt where f1 > 2) zz;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort
Warnings:
Note 1003 select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where (`test`.`t1`.`f1` < 7) group by `test`.`t1`.`f1`) `tt` where (`tt`.`f1` > 2)
@ -429,8 +429,8 @@ join
(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) z
on x.f1 = z.f1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
1 SIMPLE <derived5> ref key0 key0 5 tt.f1 2 100.00
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
1 PRIMARY <derived5> ref key0 key0 5 tt.f1 2 100.00
5 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort
3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort
Warnings:
@ -522,7 +522,7 @@ materialized view in merged derived
explain extended
select * from ( select * from v1 where f1 < 7) tt;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where
3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort
Warnings:
Note 1003 select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` where (`v1`.`f1` < 7)
@ -568,8 +568,8 @@ f1 f11
join of above two
explain extended select * from v6 join v7 on f2=f1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where
1 SIMPLE <derived5> ref key0 key0 5 test.t2.f2 2 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 11 100.00 Using where
1 PRIMARY <derived5> ref key0 key0 5 test.t2.f2 2 100.00
5 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort
Warnings:
Note 1003 select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22`,`v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`t2` join `test`.`v1` where ((`v1`.`f1` = `test`.`t2`.`f2`) and (`test`.`t2`.`f2` < 7) and (`test`.`t2`.`f2` in (2,3)))
@ -1220,7 +1220,7 @@ Note 1003 select `test`.`t1`.`b` AS `b` from `test`.`t1` where 0
EXPLAIN EXTENDED
SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
3 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 Using temporary; Using filesort
Warnings:
Note 1003 select `v2`.`b` AS `b` from `test`.`v2` where 0

221
mysql-test/r/explain_non_select.result Normal file
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@ -0,0 +1,221 @@
drop table if exists t0, t1;
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
#
# Tests for single-table DELETE
#
explain select * from t0 where a=3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
explain delete from t0 where a=3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
# DELETE without WHERE is a special case:
explain delete from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL 8 Deleting all rows
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
# This should use an index, possible_keys=NULL because there is no WHERE
explain delete from t1 order by a limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL a 5 NULL 2
# This should use range, possible_keys={a,b}
explain delete from t1 where a<20 and b < 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 5 NULL 1 Using where
# This should use ALL + filesort
explain delete from t1 order by a+1 limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 512 Using filesort
# This should use range + using filesort
explain delete from t1 where a<20 order by b limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1 Using where; Using filesort
# Try some subqueries:
explain delete from t1 where a < (select max(a) from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range a a 5 NULL 1 Using where
2 SUBQUERY t0 ALL NULL NULL NULL NULL 8
explain delete from t1 where a < (select max(a) from t0 where a < t1.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 512 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 8 Using where
#
# Tests for multi-table DELETE
#
explain delete t1 from t0, t1 where t0.a = t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
1 SIMPLE t1 ref a a 5 test.t0.a 4
drop table t0, t1;
# ###################################################################
# ## EXPLAIN UPDATE tests
# ###################################################################
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
explain update t0 set a=3 where a=4;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
explain update t1 set a=a+1 where 3>4;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
explain update t1 set a=a+1 where a=3 and a=4;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
# This should use an index, possible_keys=NULL because there is no WHERE
explain update t1 set a=a+1 order by a limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 512 Using filesort
# This should use range, possible_keys={a,b}
explain update t1 set filler='fooo' where a<20 and b < 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 5 NULL 1 Using where
# This should use ALL + filesort
explain update t1 set filler='fooo' order by a+1 limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 512 Using filesort
# This should use range + using filesort
explain update t1 set filler='fooo' where a<20 order by b limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1 Using where; Using filesort
# Try some subqueries:
explain update t1 set filler='fooo' where a < (select max(a) from t0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range a a 5 NULL 1 Using where
2 SUBQUERY t0 ALL NULL NULL NULL NULL 8
explain update t1 set filler='fooo' where a < (select max(a) from t0 where a < t1.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 512 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 8 Using where
#
# Tests for multi-table UPDATE
#
explain update t0, t1 set t1.a=t1.a+1 where t0.a = t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
1 SIMPLE t1 ref a a 5 test.t0.a 4
drop table t0, t1;
#
# Try DELETE ... RETURNING ...
#
create table t0 (a int);
insert into t0 values (1),(2),(3),(4);
explain delete from t0 where a=1 returning a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 4 Using where
explain delete from t0 returning a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 4
drop table t0;
#
# MDEV-5070 - EXPLAIN INSERT ... SELECT crashes on 10.0-base-explain-slowquerylog
#
create table t0 (a int);
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
create table t1 (a int);
explain insert into t1 select * from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8
explain replace into t1 select * from t0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8
drop table t0, t1;
#
# MDEV-5067: Valgrind warnings (Invalid read) in QPF_table_access::print_explain
#
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (7),(0),(9);
SELECT * FROM t1 INNER JOIN ( SELECT DISTINCT * FROM t1 ) AS sq ON (sq.i = t1.i);
i i
7 7
0 0
9 9
DROP TABLE t1;
#
# MDEV-5093, MDEV-5094: EXPLAIN PARTITIONS and EXPLAIN EXTENDED do not
# work for EXPLAIN UPDATE.
#
create table t1 (i int);
explain partitions update t1 set i = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 0
create table t2 (a int, b int) partition by hash(a) partitions 5;
insert into t2 values (0,0),(1,1),(2,2),(3,3),(4,4);
explain partitions update t2 set b=3 where a in (3,4);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 2 Using where
explain partitions delete from t2 where a in (3,4);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t2 p3,p4 ALL NULL NULL NULL NULL 2 Using where
explain extended update t2 set b=3 where a in (3,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where
explain extended delete from t2 where a in (3,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where
drop table t1,t2;
#
# Check the special case where partition pruning removed all partitions
#
create table t1 (a int, b int)
partition by range (a) (
partition p0 values less than (10),
partition p1 values less than (20),
partition p2 values less than (30)
);
insert into t1 values (9,9), (19,19), (29,29);
explain partitions select * from t1 where a in (32,33);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions delete from t1 where a in (32,33);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No matching rows after partition pruning
explain partitions update t1 set b=12345 where a in (32,33);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No matching rows after partition pruning
drop table t1;
#
# Tests for EXPLAIN INSERT ... VALUES
#
create table t1 (a int, key(a));
explain insert into t1 values (1),(2),(3);
id select_type table type possible_keys key key_len ref rows Extra
1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL
insert into t1 values (1),(2),(3);
create table t2 (a int, b int);
explain insert into t2 values
(10, 1+(select max(a) from t1)),
(11, 1+(select max(a+1) from t1));
id select_type table type possible_keys key key_len ref rows Extra
1 INSERT t2 ALL NULL NULL NULL NULL NULL NULL
3 SUBQUERY t1 index NULL a 5 NULL 3 Using index
2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
drop table t1,t2;
#
# MDEV-5122: "Commands out of sync", "Malformed packet" or client hang up on unique key violation
#
drop table if exists t1;
Warnings:
Note 1051 Unknown table 't1'
drop function if exists f1;
create table t1 (a int, unique(a));
create function f1(x int)
returns int
begin
insert into t1 values(x),(x);
return 10;
end|
select f1(100);
ERROR 23000: Duplicate entry '100' for key 'a'
select 'OK';
OK
OK
drop function f1;
drop table t1;

41
mysql-test/r/explain_slowquerylog.result Normal file
View File

@ -0,0 +1,41 @@
drop table if exists t0,t1;
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
explain select * from t0 where a < 3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where
#
# MDEV-5045: Server crashes in QPF_query::print_explain with log_slow_verbosity='query_plan,explain'
#
set autocommit=1;
drop table t0;
#
# MDEV-5047 virtual THD::~THD(): Assertion `status_var.memory_used == 0' fails on disconnect
#
ALTER TABLE nonexisting ENABLE KEYS;
ERROR 42S02: Table 'test.nonexisting' doesn't exist
SHOW WARNINGS;
Level Code Message
Error 1146 Table 'test.nonexisting' doesn't exist
SELECT 1;
1
1
#
# MDEV-5060 Server crashes on EXPLAIN EXTENDED or EXPLAIN PARTITIONS with explain in slow_log
#
EXPLAIN PARTITIONS SELECT 1 ;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
#
# MDEV-5106: Server crashes in Explain_union::print_explain on ER_TOO_BIG_SELECT with explain in slow log
#
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SET max_join_size = 10;
( SELECT ta.* FROM t1 ta, t1 tb ) UNION ( SELECT * FROM t1 );
ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay
SELECT 'Server still alive?' as 'Yes';
Yes
Server still alive?
DROP TABLE t1;

178
mysql-test/r/grant_explain_non_select.result Normal file
View File

@ -0,0 +1,178 @@
CREATE DATABASE privtest_db;
CREATE TABLE privtest_db.t1 (a INT);
CREATE TABLE privtest_db.t2 (a INT);
INSERT INTO privtest_db.t2 VALUES (1), (2), (3);
GRANT USAGE ON *.* TO 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t2 TO 'privtest'@'localhost';
USE privtest_db;
EXPLAIN INSERT INTO t1 VALUES (10);
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
INSERT INTO t1 VALUES (10);
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN INSERT INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
INSERT INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
GRANT INSERT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN INSERT INTO t1 VALUES (10);
id select_type table type possible_keys key key_len ref rows Extra
1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL
INSERT INTO t1 VALUES (10);
EXPLAIN INSERT INTO t1 SELECT * FROM t2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
INSERT INTO t1 SELECT * FROM t2;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
EXPLAIN REPLACE INTO t1 VALUES (10);
ERROR 42000: INSERT,DELETE command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 VALUES (10);
ERROR 42000: INSERT,DELETE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT,DELETE command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT,DELETE command denied to user 'privtest'@'localhost' for table 't1'
GRANT INSERT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN REPLACE INTO t1 VALUES (10);
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 VALUES (10);
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
REVOKE INSERT ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN REPLACE INTO t1 VALUES (10);
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 VALUES (10);
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
REPLACE INTO t1 SELECT * FROM t2;
ERROR 42000: INSERT command denied to user 'privtest'@'localhost' for table 't1'
GRANT INSERT, DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN REPLACE INTO t1 VALUES (10);
id select_type table type possible_keys key key_len ref rows Extra
1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL
REPLACE INTO t1 VALUES (10);
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
REPLACE INTO t1 SELECT * FROM t2;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
EXPLAIN UPDATE t1 SET a = a + 1;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
UPDATE t1 SET a = a + 1;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
GRANT UPDATE ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN UPDATE t1 SET a = a + 1;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
UPDATE t1 SET a = a + 1;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
REVOKE UPDATE ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN UPDATE t1 SET a = a + 1;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
UPDATE t1 SET a = a + 1;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
ERROR 42000: UPDATE command denied to user 'privtest'@'localhost' for table 't1'
GRANT UPDATE, SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN UPDATE t1 SET a = a + 1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8
UPDATE t1 SET a = a + 1;
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
EXPLAIN DELETE FROM t1 WHERE a = 10;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
DELETE FROM t1 WHERE a = 10;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
GRANT DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN DELETE FROM t1 WHERE a = 10;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
DELETE FROM t1 WHERE a = 10;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for column 'a' in table 't1'
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: SELECT command denied to user 'privtest'@'localhost' for table 't1'
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN DELETE FROM t1 WHERE a = 10;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
DELETE FROM t1 WHERE a = 10;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
ERROR 42000: DELETE command denied to user 'privtest'@'localhost' for table 't1'
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT DELETE, SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
EXPLAIN DELETE FROM t1 WHERE a = 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
DELETE FROM t1 WHERE a = 10;
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
CREATE VIEW privtest_db.v1 (a) AS SELECT a FROM privtest_db.t1;
GRANT SELECT, INSERT, UPDATE, DELETE ON privtest_db.v1 TO 'privtest'@'localhost';
EXPLAIN SELECT * FROM v1;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
SELECT * FROM v1;
a
11
4
4
11
4
4
EXPLAIN INSERT INTO v1 VALUES (10);
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
INSERT INTO v1 VALUES (10);
EXPLAIN INSERT INTO v1 SELECT * FROM t2;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
INSERT INTO v1 SELECT * FROM t2;
EXPLAIN REPLACE INTO v1 VALUES (10);
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
REPLACE INTO v1 VALUES (10);
EXPLAIN REPLACE INTO v1 SELECT * FROM t2;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
REPLACE INTO v1 SELECT * FROM t2;
EXPLAIN UPDATE v1 SET a = a + 1;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
UPDATE v1 SET a = a + 1;
EXPLAIN UPDATE v1, t2 SET v1.a = v1.a + 1 WHERE v1.a = t2.a;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
UPDATE v1, t2 SET v1.a = v1.a + 1 WHERE v1.a = t2.a;
EXPLAIN DELETE FROM v1 WHERE a = 10;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
DELETE FROM v1 WHERE a = 10;
EXPLAIN DELETE FROM v1 USING v1, t2 WHERE v1.a = t2.a;
ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
DELETE FROM v1 USING v1, t2 WHERE v1.a = t2.a;
DROP USER 'privtest'@localhost;
USE test;
DROP DATABASE privtest_db;

2
mysql-test/r/limit_rows_examined.result
View File

@ -439,7 +439,7 @@ from (select * from t1
where c1 IN (select * from t2 where c2 > ' ' LIMIT ROWS EXAMINED 0)) as tmp
LIMIT ROWS EXAMINED 11;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
select *
from (select * from t1

2907
mysql-test/r/myisam_explain_non_select_all.result Normal file
View File

File diff suppressed because it is too large Load Diff

2
mysql-test/r/mysqld--help.result
View File

@ -344,7 +344,7 @@ The following options may be given as the first argument:
log if it is open.
--log-slow-verbosity=name
log-slow-verbosity=[value[,value ...]] where value is one
of 'innodb', 'query_plan'
of 'innodb', 'query_plan', 'explain'
--log-tc=name Path to transaction coordinator log (used for
transactions that affect more than one storage engine,
when binary log is disabled).

4
mysql-test/r/selectivity.result
View File

@ -393,7 +393,7 @@ and not exists (select * from orders where o_custkey = c_custkey)
group by cntrycode
order by cntrycode;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
1 PRIMARY customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
4 DEPENDENT SUBQUERY orders ref i_o_custkey i_o_custkey 5 dbt3_s001.customer.c_custkey 15 100.00 Using index
3 SUBQUERY customer ALL NULL NULL NULL NULL 150 100.00 Using where
Warnings:
@ -434,7 +434,7 @@ and not exists (select * from orders where o_custkey = c_custkey)
group by cntrycode
order by cntrycode;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
1 PRIMARY customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
4 DEPENDENT SUBQUERY orders ref i_o_custkey i_o_custkey 5 dbt3_s001.customer.c_custkey 15 100.00 Using index
3 SUBQUERY customer ALL NULL NULL NULL NULL 150 91.00 Using where
Warnings:

4
mysql-test/r/selectivity_innodb.result
View File

@ -396,7 +396,7 @@ and not exists (select * from orders where o_custkey = c_custkey)
group by cntrycode
order by cntrycode;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
1 PRIMARY customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
4 DEPENDENT SUBQUERY orders ref i_o_custkey i_o_custkey 5 dbt3_s001.customer.c_custkey 15 100.00 Using index
3 SUBQUERY customer ALL NULL NULL NULL NULL 150 100.00 Using where
Warnings:
@ -437,7 +437,7 @@ and not exists (select * from orders where o_custkey = c_custkey)
group by cntrycode
order by cntrycode;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
1 PRIMARY customer ALL NULL NULL NULL NULL 150 100.00 Using where; Using temporary; Using filesort
4 DEPENDENT SUBQUERY orders ref i_o_custkey i_o_custkey 5 dbt3_s001.customer.c_custkey 15 100.00 Using index
3 SUBQUERY customer ALL NULL NULL NULL NULL 150 91.00 Using where
Warnings:

113
mysql-test/r/show_explain.result
View File

@ -165,7 +165,11 @@ set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_end';
select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<1;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY a ALL NULL NULL NULL NULL 10 Using where
2 DEPENDENT SUBQUERY b ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<1
a (select max(a) from t0 b where b.a+a.a<10)
0 9
set debug_dbug=@old_debug;
@ -177,6 +181,8 @@ set debug_dbug='+d,show_explain_probe_join_exec_start';
set @foo= (select max(a) from t0 where sin(a) >0);
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
kill query $thr2;
ERROR 70100: Query execution was interrupted
set debug_dbug=@old_debug;
#
# Attempt SHOW EXPLAIN for an UPDATE
@ -186,22 +192,38 @@ set @show_explain_probe_select_id=2;
set debug_dbug='+d,show_explain_probe_join_exec_start';
update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3
drop table t2;
set debug_dbug=@old_debug;
#
# Attempt SHOW EXPLAIN for a DELETE
# Attempt SHOW EXPLAIN for a DELETE (UPD: now works)
#
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
set debug_dbug='+d,show_explain_probe_join_exec_start';
delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3
drop table t2;
set debug_dbug=@old_debug;
#
@ -220,13 +242,13 @@ Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Query plan already deleted
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 3
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Query plan already deleted
2 DEPENDENT SUBQUERY t0 ALL NULL NULL NULL NULL 10 Using where
Warnings:
Note 1003 select t2.a, ((select max(a) from t0 where t2.a + t0.a <3) >3) as SUBQ from t2
a SUBQ
@ -327,7 +349,11 @@ SELECT alias.a FROM t2, ( SELECT * FROM t2 ) AS alias GROUP BY alias.a;
# FIXED by "conservative assumptions about when QEP is available" fix:
# NOTE: current code will not show "Using join buffer":
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using temporary; Using filesort
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using join buffer (flat, BNL join)
Warnings:
Note 1003 SELECT alias.a FROM t2, ( SELECT * FROM t2 ) AS alias GROUP BY alias.a
a
1
2
@ -381,13 +407,8 @@ set debug_dbug='+d,show_explain_probe_join_exec_end';
SELECT * FROM v1, t2;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
a b
8 4
8 5
8 6
8 7
8 8
8 9
kill query $thr2;
ERROR 70100: Query execution was interrupted
set debug_dbug=@old_debug;
DROP VIEW v1;
DROP TABLE t2, t3;
@ -412,7 +433,10 @@ set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_end';
select * from t0 where 1>10;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 select * from t0 where 1>10
a
set debug_dbug=@old_debug;
#
@ -424,7 +448,10 @@ set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_end';
select * from t0,t3 where t3.a=112233;
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 select * from t0,t3 where t3.a=112233
a a
set debug_dbug=@old_debug;
drop table t3;
@ -529,7 +556,12 @@ set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_end';
SELECT * FROM t2 WHERE (5, 78) IN (SELECT `a1`, MAX(`a1`) FROM t2 GROUP BY `a1`);
show explain for $thr2;
ERROR HY000: Target is not running an EXPLAINable command
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> const distinct_key distinct_key 8 const,const 1
1 PRIMARY t2 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join)
2 MATERIALIZED t2 index NULL a1 4 NULL 20 Using index
Warnings:
Note 1003 SELECT * FROM t2 WHERE (5, 78) IN (SELECT `a1`, MAX(`a1`) FROM t2 GROUP BY `a1`)
pk a1
set debug_dbug=@old_debug;
DROP TABLE t2;
@ -635,7 +667,7 @@ SELECT a + 1 FROM v1;
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED NULL NULL NULL NULL NULL NULL NULL Query plan already deleted
2 DERIVED t1 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 SELECT a + 1 FROM v1
a + 1
@ -1045,7 +1077,7 @@ show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY alias1 ALL NULL NULL NULL NULL 14
1 PRIMARY t2 ALL NULL NULL NULL NULL 20
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Query plan already deleted
3 SUBQUERY t3 ALL NULL NULL NULL NULL 20 Using where
Warnings:
Note 1003 SELECT max(a+b+c) FROM t1 AS alias1, ( SELECT * FROM t2 ) AS alias
WHERE EXISTS ( SELECT * FROM t3 WHERE b = c ) OR a <= 10
@ -1095,6 +1127,45 @@ set names default;
#
show explain for foo;
ERROR HY000: You may only use constant expressions in this statement
#
# MDEV-411: SHOW EXPLAIN: For dependent subquery EXPLAIN produces type=index, key, 'Using where; Using index',
# while SHOW EXPLAIN says type=ALL, no key, 'Range checked for each record'
#
CREATE TABLE t1 (a INT NOT NULL, KEY(a)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (7),(0);
CREATE TABLE t2 (b INT NOT NULL) ENGINE=MyISAM;
INSERT INTO t2 VALUES (0),(8);
explain
SELECT SUM(b) FROM ( SELECT * FROM t1 ) AS alias1, t2
WHERE b <= ANY (
SELECT a FROM t1
WHERE a = b + SLEEP(0.2) OR a >= ( SELECT SUM(b) FROM t2 ));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using index
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
3 DEPENDENT SUBQUERY t1 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1)
4 SUBQUERY t2 ALL NULL NULL NULL NULL 2
set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_start';
SELECT SUM(b) FROM ( SELECT * FROM t1 ) AS alias1, t2
WHERE b <= ANY (
SELECT a FROM t1
WHERE a = b + SLEEP(0.2) OR a >= ( SELECT SUM(b) FROM t2 ));
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 4 NULL 2 Using index
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
3 DEPENDENT SUBQUERY t1 ALL a NULL NULL NULL 2 Range checked for each record (index map: 0x1)
4 SUBQUERY t2 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 SELECT SUM(b) FROM ( SELECT * FROM t1 ) AS alias1, t2
WHERE b <= ANY (
SELECT a FROM t1
WHERE a = b + SLEEP(0.2) OR a >= ( SELECT SUM(b) FROM t2 ))
SUM(b)
0
set debug_dbug=@old_debug;
DROP TABLE t1,t2;
# End
drop table t0;
set debug_sync='RESET';

44
mysql-test/r/show_explain_non_select.result Normal file
View File

@ -0,0 +1,44 @@
drop table if exists t0, t1;
SET @old_debug= @@session.debug;
set debug_sync='RESET';
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
#
# Test SHOW EXPLAIN for single-table DELETE
#
set debug_dbug='+d,show_explain_probe_delete_exec_start';
delete from t1 where a<10 and b+1>1000;
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1 Using where
Warnings:
Note 1003 delete from t1 where a<10 and b+1>1000
#
# Test SHOW EXPLAIN for multi-table DELETE
#
set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_do_select';
delete t1 from t1, t0 where t0.a=t1.a and t1.b +1 > 1000;
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 8 Using where
1 SIMPLE t1 ref a a 5 test.t0.a 4 Using where
Warnings:
Note 1003 delete t1 from t1, t0 where t0.a=t1.a and t1.b +1 > 1000
#
# Test SHOW EXPLAIN for single-table UPDATE
#
set debug_dbug='+d,show_explain_probe_update_exec_start';
update t1 set filler='filler-data-2' where a<10 and b+1>1000;
show explain for $thr2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1 Using where
Warnings:
Note 1003 update t1 set filler='filler-data-2' where a<10 and b+1>1000
drop table t0,t1;
set debug_dbug=@old_debug;
set debug_sync='RESET';

14
mysql-test/r/subselect.result
View File

@ -10,7 +10,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -734,7 +734,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -746,7 +746,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -880,7 +880,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4554,7 +4554,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6112,7 +6112,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6157,7 +6157,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

4
mysql-test/r/subselect2.result
View File

@ -286,7 +286,7 @@ WHERE date < '2012-12-12 12:12:12'
ORDER BY mirror_date ASC
) AS calculated_result;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> ALL NULL NULL NULL NULL 2
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 range date date 9 NULL 2 Using index condition; Using where; Rowid-ordered scan; Using filesort
SELECT * FROM (
SELECT node_uid, date, mirror_date, @result := 0 AS result
@ -309,7 +309,7 @@ WHERE date < '2012-12-12 12:12:12'
ORDER BY mirror_date ASC
) AS calculated_result;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> ALL NULL NULL NULL NULL 2
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 range date date 9 NULL 2 Using index condition; Using where; Using filesort
SELECT * FROM (
SELECT node_uid, date, mirror_date, @result := 0 AS result

2
mysql-test/r/subselect3.result
View File

@ -1031,7 +1031,7 @@ update t22 set c = '2005-12-08 15:58:27' where a = 255;
explain select t21.* from t21,t22 where t21.a = t22.a and
t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t11 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort; Start temporary
1 PRIMARY t11 ALL NULL NULL NULL NULL 8 Using where; Start temporary; Using temporary; Using filesort
1 PRIMARY t12 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
1 PRIMARY t22 ALL NULL NULL NULL NULL 26 Using where; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t21 ALL NULL NULL NULL NULL 26 Using where; Using join buffer (flat, BNL join)

2
mysql-test/r/subselect3_jcl6.result
View File

@ -1041,7 +1041,7 @@ update t22 set c = '2005-12-08 15:58:27' where a = 255;
explain select t21.* from t21,t22 where t21.a = t22.a and
t22.a in (select t12.a from t11, t12 where t11.a in(255,256) and t11.a = t12.a and t11.c is null) and t22.c is null order by t21.a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t11 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort; Start temporary
1 PRIMARY t11 ALL NULL NULL NULL NULL 8 Using where; Start temporary; Using temporary; Using filesort
1 PRIMARY t12 hash_ALL NULL #hash#$hj 4 test.t11.a 8 Using where; Using join buffer (flat, BNLH join)
1 PRIMARY t22 hash_ALL NULL #hash#$hj 4 test.t11.a 26 Using where; End temporary; Using join buffer (incremental, BNLH join)
1 PRIMARY t21 hash_ALL NULL #hash#$hj 4 test.t11.a 26 Using where; Using join buffer (incremental, BNLH join)

16
mysql-test/r/subselect4.result
View File

@ -93,12 +93,12 @@ DROP TABLE t1,t2;
#
EXPLAIN SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
DESCRIBE SELECT 1 LIKE ( 1 IN ( SELECT 1 ) );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
# None of the below should crash
@ -520,8 +520,8 @@ id select_type table type possible_keys key key_len ref rows Extra
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
@ -558,8 +558,8 @@ id select_type table type possible_keys key key_len ref rows Extra
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL t1_IDX NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
1 PRIMARY t1 ALL t1_IDX NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;
@ -595,8 +595,8 @@ id select_type table type possible_keys key key_len ref rows Extra
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5
1 SIMPLE <subquery2> eq_ref distinct_key distinct_key 3 func 1
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 3 func 1
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
DEALLOCATE PREPARE stmt;

14
mysql-test/r/subselect_exists_to_in.result
View File

@ -14,7 +14,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -738,7 +738,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -750,7 +750,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -884,7 +884,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4560,7 +4560,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6120,7 +6120,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6165,7 +6165,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

14
mysql-test/r/subselect_no_mat.result
View File

@ -17,7 +17,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -741,7 +741,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -753,7 +753,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -887,7 +887,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4556,7 +4556,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6111,7 +6111,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6156,7 +6156,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

14
mysql-test/r/subselect_no_opts.result
View File

@ -13,7 +13,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -737,7 +737,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -749,7 +749,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -883,7 +883,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4552,7 +4552,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6107,7 +6107,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6152,7 +6152,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

14
mysql-test/r/subselect_no_scache.result
View File

@ -16,7 +16,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -740,7 +740,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -752,7 +752,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -886,7 +886,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4560,7 +4560,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6118,7 +6118,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6163,7 +6163,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

14
mysql-test/r/subselect_no_semijoin.result
View File

@ -13,7 +13,7 @@ select (select 2);
2
explain extended select (select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select 2 AS `(select 2)`
@ -737,7 +737,7 @@ id
1
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
@ -749,7 +749,7 @@ id
2
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ref id id 5 const 1 100.00 Using where; Using index
1 SIMPLE t2 ref id id 5 const 1 100.00 Using where; Using index
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
@ -883,7 +883,7 @@ select 10.5 > ANY (SELECT * from t1);
1
explain extended select (select a+1) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
@ -4552,7 +4552,7 @@ int_nokey int_key
0 0
EXPLAIN EXTENDED SELECT * FROM C WHERE `int_key` IN (SELECT `int_nokey`);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY C ALL NULL NULL NULL NULL 20 100.00 Using where
1 SIMPLE C ALL NULL NULL NULL NULL 20 100.00 Using where
DROP TABLE C;
# End of test for bug#45061.
#
@ -6107,7 +6107,7 @@ FROM t1 AS sq4_alias1
WHERE (sq4_alias1.col_varchar_key + NULL) IS NULL OR
sq4_alias1.col_varchar_key = @var3 ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE <derived2> system NULL NULL NULL NULL 0 const row not found
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
SELECT * FROM ( SELECT @var3:=12, sq4_alias1.*
FROM t1 AS sq4_alias1
@ -6152,7 +6152,7 @@ FROM t2 AS c_sq1_alias1
WHERE (c_sq1_alias1.col_int_nokey != @var2
OR c_sq1_alias1.pk != @var3)) ) AS alias3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
3 DEPENDENT SUBQUERY c_sq1_alias1 system PRIMARY NULL NULL NULL 1
SELECT * FROM ( SELECT sq4_alias1.*
FROM t1 AS sq4_alias1

6
mysql-test/r/subselect_sj.result
View File

@ -941,9 +941,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
DROP TABLE t1, t2, t3;
DROP VIEW v2, v3;
# End of Bug#49198

6
mysql-test/r/subselect_sj_jcl6.result
View File

@ -954,9 +954,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
EXECUTE stmt;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 PRIMARY t1 index PRIMARY PRIMARY 4 NULL 2 Using index
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
1 PRIMARY t3 eq_ref PRIMARY PRIMARY 4 test.t1.t1field 1 Using index
DROP TABLE t1, t2, t3;
DROP VIEW v2, v3;
# End of Bug#49198

24
mysql-test/r/table_elim.result
View File

@ -119,27 +119,27 @@ t2 where id=f.id);
This should use one table:
explain select id from v1 where id=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE f const PRIMARY PRIMARY 4 const 1 Using index
1 PRIMARY f const PRIMARY PRIMARY 4 const 1 Using index
This should use one table:
explain extended select id from v1 where id in (1,2,3,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index
1 PRIMARY f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index
Warnings:
Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2
Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3,4))
This should use facts and a1 tables:
explain extended select id from v1 where attr1 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition
1 SIMPLE f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2
Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` where ((`f`.`id` = `a1`.`id`) and (`a1`.`attr1` between 12 and 14))
This should use facts, a2 and its subquery:
explain extended select id from v1 where attr2 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where
1 SIMPLE f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using index
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition; Using where
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using index
3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.a2.id 2 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.a2.id' of SELECT #3 was resolved in SELECT #2
@ -147,27 +147,27 @@ Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t2` `a2` whe
This should use one table:
explain select id from v2 where id=2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE f const PRIMARY PRIMARY 4 const 1 Using index
1 PRIMARY f const PRIMARY PRIMARY 4 const 1 Using index
This should use one table:
explain extended select id from v2 where id in (1,2,3,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index
1 PRIMARY f range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index
Warnings:
Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2
Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` where (`f`.`id` in (1,2,3,4))
This should use facts and a1 tables:
explain extended select id from v2 where attr1 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition
1 SIMPLE f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
1 PRIMARY a1 range PRIMARY,attr1 attr1 5 NULL 2 100.00 Using index condition
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a1.id 1 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2
Note 1003 select `f`.`id` AS `id` from `test`.`t0` `f` join `test`.`t1` `a1` where ((`f`.`id` = `a1`.`id`) and (`a1`.`attr1` between 12 and 14))
This should use facts, a2 and its subquery:
explain extended select id from v2 where attr2 between 12 and 14;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition
1 SIMPLE f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index
1 PRIMARY a2 range PRIMARY,attr2 attr2 5 NULL 5 100.00 Using index condition
1 PRIMARY f eq_ref PRIMARY PRIMARY 4 test.a2.id 1 100.00 Using where; Using index
3 DEPENDENT SUBQUERY t2 ref PRIMARY PRIMARY 4 test.f.id 2 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.f.id' of SELECT #3 was resolved in SELECT #2

6
mysql-test/r/view.result
View File

@ -119,7 +119,7 @@ c
12
explain extended select c from v5;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <derived3> ALL NULL NULL NULL NULL 5 100.00
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 5 100.00
3 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00
Warnings:
Note 1003 select (`v2`.`c` + 1) AS `c` from `test`.`v2`
@ -4475,8 +4475,8 @@ f1 f1
1 1
EXPLAIN EXTENDED SELECT * FROM v2 AS a1, v2 AS a2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE <derived3> ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
1 SIMPLE <derived5> ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
1 PRIMARY <derived5> ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
5 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00
3 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00
Warnings:

28
mysql-test/suite/sys_vars/r/log_slow_verbosity_basic.result
View File

@ -37,6 +37,22 @@ set session log_slow_verbosity=3;
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
innodb,query_plan
set session log_slow_verbosity=4;
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
explain
set session log_slow_verbosity=5;
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
innodb,explain
set session log_slow_verbosity=6;
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
query_plan,explain
set session log_slow_verbosity=7;
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
innodb,query_plan,explain
set session log_slow_verbosity='innodb';
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
@ -49,6 +65,14 @@ set session log_slow_verbosity='innodb,query_plan';
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
innodb,query_plan
set session log_slow_verbosity='explain';
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
explain
set session log_slow_verbosity='innodb,query_plan,explain';
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
innodb,query_plan,explain
set session log_slow_verbosity='';
select @@session.log_slow_verbosity;
@@session.log_slow_verbosity
@ -59,6 +83,6 @@ set session log_slow_verbosity=1e1;
ERROR 42000: Incorrect argument type to variable 'log_slow_verbosity'
set session log_slow_verbosity="foo";
ERROR 42000: Variable 'log_slow_verbosity' can't be set to the value of 'foo'
set session log_slow_verbosity=4;
ERROR 42000: Variable 'log_slow_verbosity' can't be set to the value of '4'
set session log_slow_verbosity=8;
ERROR 42000: Variable 'log_slow_verbosity' can't be set to the value of '8'
SET @@global.log_slow_verbosity = @start_global_value;

16
mysql-test/suite/sys_vars/t/log_slow_verbosity_basic.test
View File

@ -29,12 +29,26 @@ set session log_slow_verbosity=2;
select @@session.log_slow_verbosity;
set session log_slow_verbosity=3;
select @@session.log_slow_verbosity;
set session log_slow_verbosity=4;
select @@session.log_slow_verbosity;
set session log_slow_verbosity=5;
select @@session.log_slow_verbosity;
set session log_slow_verbosity=6;
select @@session.log_slow_verbosity;
set session log_slow_verbosity=7;
select @@session.log_slow_verbosity;
set session log_slow_verbosity='innodb';
select @@session.log_slow_verbosity;
set session log_slow_verbosity='query_plan';
select @@session.log_slow_verbosity;
set session log_slow_verbosity='innodb,query_plan';
select @@session.log_slow_verbosity;
set session log_slow_verbosity='explain';
select @@session.log_slow_verbosity;
set session log_slow_verbosity='innodb,query_plan,explain';
select @@session.log_slow_verbosity;
set session log_slow_verbosity='';
select @@session.log_slow_verbosity;
@ -48,6 +62,6 @@ set session log_slow_verbosity=1e1;
--error ER_WRONG_VALUE_FOR_VAR
set session log_slow_verbosity="foo";
--error ER_WRONG_VALUE_FOR_VAR
set session log_slow_verbosity=4;
set session log_slow_verbosity=8;
SET @@global.log_slow_verbosity = @start_global_value;

200
mysql-test/t/explain_non_select.test Normal file
View File

@ -0,0 +1,200 @@
#
# MariaDB tests for EXPLAIN UPDATE/DELETE.
#
--source include/have_partition.inc
--disable_warnings
drop table if exists t0, t1;
--enable_warnings
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
--echo #
--echo # Tests for single-table DELETE
--echo #
explain select * from t0 where a=3;
explain delete from t0 where a=3;
--echo # DELETE without WHERE is a special case:
explain delete from t0;
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
--echo # This should use an index, possible_keys=NULL because there is no WHERE
explain delete from t1 order by a limit 2;
--echo # This should use range, possible_keys={a,b}
explain delete from t1 where a<20 and b < 10;
--echo # This should use ALL + filesort
explain delete from t1 order by a+1 limit 2;
--echo # This should use range + using filesort
explain delete from t1 where a<20 order by b limit 2;
--echo # Try some subqueries:
explain delete from t1 where a < (select max(a) from t0);
explain delete from t1 where a < (select max(a) from t0 where a < t1.b);
--echo #
--echo # Tests for multi-table DELETE
--echo #
explain delete t1 from t0, t1 where t0.a = t1.a;
drop table t0, t1;
--echo # ###################################################################
--echo # ## EXPLAIN UPDATE tests
--echo # ###################################################################
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
explain update t0 set a=3 where a=4;
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
explain update t1 set a=a+1 where 3>4;
explain update t1 set a=a+1 where a=3 and a=4;
--echo # This should use an index, possible_keys=NULL because there is no WHERE
explain update t1 set a=a+1 order by a limit 2;
--echo # This should use range, possible_keys={a,b}
explain update t1 set filler='fooo' where a<20 and b < 10;
--echo # This should use ALL + filesort
explain update t1 set filler='fooo' order by a+1 limit 2;
--echo # This should use range + using filesort
explain update t1 set filler='fooo' where a<20 order by b limit 2;
--echo # Try some subqueries:
explain update t1 set filler='fooo' where a < (select max(a) from t0);
explain update t1 set filler='fooo' where a < (select max(a) from t0 where a < t1.b);
--echo #
--echo # Tests for multi-table UPDATE
--echo #
explain update t0, t1 set t1.a=t1.a+1 where t0.a = t1.a;
drop table t0, t1;
--echo #
--echo # Try DELETE ... RETURNING ...
--echo #
create table t0 (a int);
insert into t0 values (1),(2),(3),(4);
explain delete from t0 where a=1 returning a;
explain delete from t0 returning a;
drop table t0;
--echo #
--echo # MDEV-5070 - EXPLAIN INSERT ... SELECT crashes on 10.0-base-explain-slowquerylog
--echo #
create table t0 (a int);
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
create table t1 (a int);
explain insert into t1 select * from t0;
explain replace into t1 select * from t0;
drop table t0, t1;
--echo #
--echo # MDEV-5067: Valgrind warnings (Invalid read) in QPF_table_access::print_explain
--echo #
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (7),(0),(9);
SELECT * FROM t1 INNER JOIN ( SELECT DISTINCT * FROM t1 ) AS sq ON (sq.i = t1.i);
DROP TABLE t1;
--echo #
--echo # MDEV-5093, MDEV-5094: EXPLAIN PARTITIONS and EXPLAIN EXTENDED do not
--echo # work for EXPLAIN UPDATE.
--echo #
create table t1 (i int);
explain partitions update t1 set i = 3;
create table t2 (a int, b int) partition by hash(a) partitions 5;
insert into t2 values (0,0),(1,1),(2,2),(3,3),(4,4);
explain partitions update t2 set b=3 where a in (3,4);
explain partitions delete from t2 where a in (3,4);
explain extended update t2 set b=3 where a in (3,4);
explain extended delete from t2 where a in (3,4);
drop table t1,t2;
--echo #
--echo # Check the special case where partition pruning removed all partitions
--echo #
create table t1 (a int, b int)
partition by range (a) (
partition p0 values less than (10),
partition p1 values less than (20),
partition p2 values less than (30)
);
insert into t1 values (9,9), (19,19), (29,29);
explain partitions select * from t1 where a in (32,33);
explain partitions delete from t1 where a in (32,33);
explain partitions update t1 set b=12345 where a in (32,33);
drop table t1;
--echo #
--echo # Tests for EXPLAIN INSERT ... VALUES
--echo #
create table t1 (a int, key(a));
explain insert into t1 values (1),(2),(3);
insert into t1 values (1),(2),(3);
create table t2 (a int, b int);
explain insert into t2 values
(10, 1+(select max(a) from t1)),
(11, 1+(select max(a+1) from t1));
drop table t1,t2;
--echo #
--echo # MDEV-5122: "Commands out of sync", "Malformed packet" or client hang up on unique key violation
--echo #
drop table if exists t1;
--disable_warnings
drop function if exists f1;
--enable_warnings
create table t1 (a int, unique(a));
delimiter |;
create function f1(x int)
returns int
begin
insert into t1 values(x),(x);
return 10;
end|
delimiter ;|
--error ER_DUP_ENTRY
select f1(100);
select 'OK';
drop function f1;
drop table t1;

1
mysql-test/t/explain_slowquerylog-master.opt Normal file
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@ -0,0 +1 @@
--slow-query-log --long-query-time=0.00000 --log-slow-verbosity=query_plan,explain

49
mysql-test/t/explain_slowquerylog.test Normal file
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@ -0,0 +1,49 @@
#
# This is a test for EXPLAINs being written into slow query log.
# For now, we just run the queries and hope not to crash.
#
#
--disable_warnings
drop table if exists t0,t1;
--enable_warnings
create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
explain select * from t0 where a < 3;
--echo #
--echo # MDEV-5045: Server crashes in QPF_query::print_explain with log_slow_verbosity='query_plan,explain'
--echo #
set autocommit=1;
drop table t0;
--echo #
--echo # MDEV-5047 virtual THD::~THD(): Assertion `status_var.memory_used == 0' fails on disconnect
--echo #
--connect (con1,localhost,root,,)
--error ER_NO_SUCH_TABLE
ALTER TABLE nonexisting ENABLE KEYS;
SHOW WARNINGS;
--disconnect con1
--connection default
SELECT 1;
--echo #
--echo # MDEV-5060 Server crashes on EXPLAIN EXTENDED or EXPLAIN PARTITIONS with explain in slow_log
--echo #
EXPLAIN PARTITIONS SELECT 1 ;
--echo #
--echo # MDEV-5106: Server crashes in Explain_union::print_explain on ER_TOO_BIG_SELECT with explain in slow log
--echo #
CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SET max_join_size = 10;
--error ER_TOO_BIG_SELECT
( SELECT ta.* FROM t1 ta, t1 tb ) UNION ( SELECT * FROM t1 );
SELECT 'Server still alive?' as 'Yes';
DROP TABLE t1;

258
mysql-test/t/grant_explain_non_select.test Normal file
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@ -0,0 +1,258 @@
#
# Privilege-specific tests for WL#4897: Add EXPLAIN INSERT/UPDATE/DELETE
#
# Grant tests not performed with embedded server
-- source include/not_embedded.inc
# Save the initial number of concurrent sessions
--source include/count_sessions.inc
CREATE DATABASE privtest_db;
CREATE TABLE privtest_db.t1 (a INT);
CREATE TABLE privtest_db.t2 (a INT);
INSERT INTO privtest_db.t2 VALUES (1), (2), (3);
GRANT USAGE ON *.* TO 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t2 TO 'privtest'@'localhost';
connect(con1,localhost,privtest,,);
connection con1;
USE privtest_db;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN INSERT INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
INSERT INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN INSERT INTO t1 SELECT * FROM t2;
--error ER_TABLEACCESS_DENIED_ERROR
INSERT INTO t1 SELECT * FROM t2;
connection default;
GRANT INSERT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
EXPLAIN INSERT INTO t1 VALUES (10);
INSERT INTO t1 VALUES (10);
EXPLAIN INSERT INTO t1 SELECT * FROM t2;
INSERT INTO t1 SELECT * FROM t2;
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 SELECT * FROM t2;
connection default;
GRANT INSERT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 SELECT * FROM t2;
connection default;
REVOKE INSERT ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 VALUES (10);
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
--error ER_TABLEACCESS_DENIED_ERROR
REPLACE INTO t1 SELECT * FROM t2;
connection default;
GRANT INSERT, DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
EXPLAIN REPLACE INTO t1 VALUES (10);
REPLACE INTO t1 VALUES (10);
EXPLAIN REPLACE INTO t1 SELECT * FROM t2;
REPLACE INTO t1 SELECT * FROM t2;
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN UPDATE t1 SET a = a + 1;
--error ER_TABLEACCESS_DENIED_ERROR
UPDATE t1 SET a = a + 1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
--error ER_TABLEACCESS_DENIED_ERROR
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
connection default;
GRANT UPDATE ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_COLUMNACCESS_DENIED_ERROR
EXPLAIN UPDATE t1 SET a = a + 1;
--error ER_COLUMNACCESS_DENIED_ERROR
UPDATE t1 SET a = a + 1;
--error ER_COLUMNACCESS_DENIED_ERROR
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
--error ER_COLUMNACCESS_DENIED_ERROR
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
connection default;
REVOKE UPDATE ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN UPDATE t1 SET a = a + 1;
--error ER_TABLEACCESS_DENIED_ERROR
UPDATE t1 SET a = a + 1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
--error ER_TABLEACCESS_DENIED_ERROR
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
connection default;
GRANT UPDATE, SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
EXPLAIN UPDATE t1 SET a = a + 1;
UPDATE t1 SET a = a + 1;
EXPLAIN UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
UPDATE t1, t2 SET t1.a = t1.a + 1 WHERE t1.a = t2.a;
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 WHERE a = 10;
--error ER_TABLEACCESS_DENIED_ERROR
DELETE FROM t1 WHERE a = 10;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
--error ER_TABLEACCESS_DENIED_ERROR
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
connection default;
GRANT DELETE ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_COLUMNACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 WHERE a = 10;
--error ER_COLUMNACCESS_DENIED_ERROR
DELETE FROM t1 WHERE a = 10;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
--error ER_TABLEACCESS_DENIED_ERROR
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 WHERE a = 10;
--error ER_TABLEACCESS_DENIED_ERROR
DELETE FROM t1 WHERE a = 10;
--error ER_TABLEACCESS_DENIED_ERROR
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
--error ER_TABLEACCESS_DENIED_ERROR
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
GRANT DELETE, SELECT ON privtest_db.t1 TO 'privtest'@'localhost';
connection con1;
EXPLAIN DELETE FROM t1 WHERE a = 10;
DELETE FROM t1 WHERE a = 10;
EXPLAIN DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
DELETE FROM t1 USING t1, t2 WHERE t1.a = t2.a;
# Views
connection default;
REVOKE ALL PRIVILEGES ON privtest_db.t1 FROM 'privtest'@'localhost';
CREATE VIEW privtest_db.v1 (a) AS SELECT a FROM privtest_db.t1;
GRANT SELECT, INSERT, UPDATE, DELETE ON privtest_db.v1 TO 'privtest'@'localhost';
connection con1;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN SELECT * FROM v1;
SELECT * FROM v1;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN INSERT INTO v1 VALUES (10);
INSERT INTO v1 VALUES (10);
--error ER_VIEW_NO_EXPLAIN
EXPLAIN INSERT INTO v1 SELECT * FROM t2;
INSERT INTO v1 SELECT * FROM t2;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN REPLACE INTO v1 VALUES (10);
REPLACE INTO v1 VALUES (10);
--error ER_VIEW_NO_EXPLAIN
EXPLAIN REPLACE INTO v1 SELECT * FROM t2;
REPLACE INTO v1 SELECT * FROM t2;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN UPDATE v1 SET a = a + 1;
UPDATE v1 SET a = a + 1;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN UPDATE v1, t2 SET v1.a = v1.a + 1 WHERE v1.a = t2.a;
UPDATE v1, t2 SET v1.a = v1.a + 1 WHERE v1.a = t2.a;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN DELETE FROM v1 WHERE a = 10;
DELETE FROM v1 WHERE a = 10;
--error ER_VIEW_NO_EXPLAIN
EXPLAIN DELETE FROM v1 USING v1, t2 WHERE v1.a = t2.a;
DELETE FROM v1 USING v1, t2 WHERE v1.a = t2.a;
connection default;
disconnect con1;
DROP USER 'privtest'@localhost;
USE test;
DROP DATABASE privtest_db;
# Wait till we reached the initial number of concurrent sessions
--source include/wait_until_count_sessions.inc

21
mysql-test/t/myisam_explain_non_select_all.test Normal file
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@ -0,0 +1,21 @@
#
# 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;

60
mysql-test/t/show_explain.test
View File

@ -202,7 +202,6 @@ set debug_dbug='+d,show_explain_probe_join_exec_end';
send select a, (select max(a) from t0 b where b.a+a.a<10) from t0 a where a<1;
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -225,7 +224,9 @@ connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
evalp kill query $thr2;
connection con1;
--error ER_QUERY_INTERRUPTED
reap;
set debug_dbug=@old_debug;
@ -238,10 +239,10 @@ set debug_dbug='+d,show_explain_probe_join_exec_start';
send update t2 set dummy=0 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -249,7 +250,7 @@ drop table t2;
set debug_dbug=@old_debug;
--echo #
--echo # Attempt SHOW EXPLAIN for a DELETE
--echo # Attempt SHOW EXPLAIN for a DELETE (UPD: now works)
--echo #
create table t2 as select a as a, a as dummy from t0 limit 2;
set @show_explain_probe_select_id=2;
@ -257,10 +258,10 @@ set debug_dbug='+d,show_explain_probe_join_exec_start';
send delete from t2 where (select max(a) from t0 where t2.a + t0.a <3) >3 ;
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -349,7 +350,7 @@ connection default;
--source include/wait_condition.inc
--echo # FIXED by "conservative assumptions about when QEP is available" fix:
--echo # NOTE: current code will not show "Using join buffer":
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -400,7 +401,9 @@ connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
evalp kill query $thr2;
connection con1;
--error ER_QUERY_INTERRUPTED
reap;
set debug_dbug=@old_debug;
DROP VIEW v1;
@ -428,7 +431,7 @@ set debug_dbug='+d,show_explain_probe_join_exec_end';
send select * from t0 where 1>10;
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
#--error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -444,7 +447,7 @@ set debug_dbug='+d,show_explain_probe_join_exec_end';
send select * from t0,t3 where t3.a=112233;
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
# --error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -540,7 +543,7 @@ send
SELECT * FROM t2 WHERE (5, 78) IN (SELECT `a1`, MAX(`a1`) FROM t2 GROUP BY `a1`);
connection default;
--source include/wait_condition.inc
--error ER_TARGET_NOT_EXPLAINABLE
# --error ER_TARGET_NOT_EXPLAINABLE
evalp show explain for $thr2;
connection con1;
reap;
@ -1129,9 +1132,44 @@ set names default;
--error ER_SET_CONSTANTS_ONLY
show explain for foo;
--echo #
--echo # MDEV-411: SHOW EXPLAIN: For dependent subquery EXPLAIN produces type=index, key, 'Using where; Using index',
--echo # while SHOW EXPLAIN says type=ALL, no key, 'Range checked for each record'
--echo #
CREATE TABLE t1 (a INT NOT NULL, KEY(a)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (7),(0);
CREATE TABLE t2 (b INT NOT NULL) ENGINE=MyISAM;
INSERT INTO t2 VALUES (0),(8);
explain
SELECT SUM(b) FROM ( SELECT * FROM t1 ) AS alias1, t2
WHERE b <= ANY (
SELECT a FROM t1
WHERE a = b + SLEEP(0.2) OR a >= ( SELECT SUM(b) FROM t2 ));
set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_join_exec_start';
send
SELECT SUM(b) FROM ( SELECT * FROM t1 ) AS alias1, t2
WHERE b <= ANY (
SELECT a FROM t1
WHERE a = b + SLEEP(0.2) OR a >= ( SELECT SUM(b) FROM t2 ));
connection default;
--source include/wait_condition.inc
evalp show explain for $thr2;
connection con1;
reap;
set debug_dbug=@old_debug;
DROP TABLE t1,t2;
--echo # End
drop table t0;
connection default;
disconnect con1;
set debug_sync='RESET';

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@ -0,0 +1,78 @@
#
# SHOW EXPLAIN tests for non-select subqueries
#
#--source include/have_debug.inc
#--source include/have_innodb.inc
#--source include/not_embedded.inc
--disable_warnings
drop table if exists t0, t1;
--enable_warnings
SET @old_debug= @@session.debug;
set debug_sync='RESET';
#
# Setup two threads and their ids
#
let $thr1=`select connection_id()`;
connect (con2, localhost, root,,);
connection con2;
let $thr2=`select connection_id()`;
connection default;
#
# Create tables
#
create table t0 (a int) engine=myisam;
insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
create table t1 (a int, b int, filler char(100), key(a), key(b));
insert into t1
select A.a+10*B.a + 10*C.a, A.a+10*B.a + 10*C.a, 'filler'
from t0 A, t0 B, t0 C;
let $wait_condition= select State='show_explain_trap' from information_schema.processlist where id=$thr2;
--echo #
--echo # Test SHOW EXPLAIN for single-table DELETE
--echo #
connection con2;
set debug_dbug='+d,show_explain_probe_delete_exec_start';
send delete from t1 where a<10 and b+1>1000;
connection default;
--source include/wait_condition.inc
evalp show explain for $thr2;
connection con2;
reap;
--echo #
--echo # Test SHOW EXPLAIN for multi-table DELETE
--echo #
set @show_explain_probe_select_id=1;
set debug_dbug='+d,show_explain_probe_do_select';
send delete t1 from t1, t0 where t0.a=t1.a and t1.b +1 > 1000;
connection default;
--source include/wait_condition.inc
evalp show explain for $thr2;
connection con2;
reap;
--echo #
--echo # Test SHOW EXPLAIN for single-table UPDATE
--echo #
connection con2;
set debug_dbug='+d,show_explain_probe_update_exec_start';
send update t1 set filler='filler-data-2' where a<10 and b+1>1000;
connection default;
--source include/wait_condition.inc
evalp show explain for $thr2;
connection con2;
reap;
drop table t0,t1;
set debug_dbug=@old_debug;
set debug_sync='RESET';