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mariadb/mysql-test/include/explain_non_select.inc
Igor Babaev 658128af43 MDEV-16188 Use in-memory PK filters built from range index scans 
This patch contains a full implementation of the optimization
that allows to use in-memory rowid / primary filters built for range  
conditions over indexes. In many cases usage of such filters reduce  
the number of disk seeks spent for fetching table rows.

In this implementation the choice of what possible filter to be applied  
(if any) is made purely on cost-based considerations.

This implementation re-achitectured the partial implementation of
the feature pushed by Galina Shalygina in the commit
8d5a11122c.

Besides this patch contains a better implementation of the generic  
handler function handler::multi_range_read_info_const() that
takes into account gaps between ranges when calculating the cost of
range index scans. It also contains some corrections of the
implementation of the handler function records_in_range() for MyISAM.

This patch supports the feature for InnoDB and MyISAM.
2019-02-03 14:56:12 -08:00

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# This file is a collection of regression and coverage tests
# for WL#4897: Add EXPLAIN INSERT/UPDATE/DELETE.
-- disable_query_log
-- disable_result_log
# SET GLOBAL innodb_stats_persistent=0;
-- enable_result_log
-- enable_query_log
# set end_markers_in_json=on;
--echo #1
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = UPDATE t1 SET a = 10 WHERE a < 10
--let $select = SELECT * FROM t1 WHERE a < 10
--source include/explain_utils.inc
DROP TABLE t1;
--echo #2
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = DELETE FROM t1 WHERE a < 10
--let $select = SELECT * FROM t1 WHERE a < 10
--source include/explain_utils.inc
DROP TABLE t1;
--echo #3
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = DELETE FROM t1 USING t1 WHERE a = 1
--let $select = SELECT * FROM t1 WHERE a = 1
--source include/explain_utils.inc
DROP TABLE t1;
--echo #4
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1, t2 SET t1.a = 10 WHERE t1.a = 1
--let $select = SELECT * FROM t1, t2 WHERE t1.a = 1
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #5
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = 10 WHERE t11.a = 1
--let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12 WHERE t11.a = 1
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #6
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 SET a = 10 WHERE 1 IN (SELECT 1 FROM t2 WHERE t2.b < 3)
--let $select = SELECT * FROM t1 WHERE 1 IN (SELECT 1 FROM t2 WHERE t2.b < 3)
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #7
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 SET a = 10 WHERE a IN (SELECT b FROM t2 WHERE t1.a < 3)
--let $select = SELECT * FROM t1 WHERE a IN (SELECT b FROM t2 WHERE t1.a < 3)
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #7
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1, t2 SET a = 10 WHERE a IN (SELECT b FROM t2 WHERE t2.b < 3)
--let $select = SELECT * FROM t1, t2 WHERE a IN (SELECT b FROM t2 WHERE t2.b < 3)
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #8
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = t11.a + 10
--let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #9
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 t11, (SELECT 1 FROM DUAL) t12 SET t11.a = t11.a + 10
--let $select = SELECT * FROM t1 t11, (SELECT 1 FROM DUAL) t12
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #10
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1), (2), (3);
--let $query = UPDATE t1 t11, (SELECT * FROM t2) t12 SET t11.a = 10 WHERE t11.a > 1
--let $select = SELECT * FROM t1 t11, (SELECT * FROM t2) t12 WHERE t11.a > 1
--source include/explain_utils.inc
DROP TABLE t1, t2;
--echo #11
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = DELETE FROM t1 WHERE a > 1 LIMIT 1
--let $select = SELECT * FROM t1 WHERE a > 1 LIMIT 1
--source include/explain_utils.inc
DROP TABLE t1;
--echo #12
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = DELETE FROM t1 WHERE 0
--let $select = SELECT * FROM t1 WHERE 0
--source include/explain_utils.inc
DROP TABLE t1;
--echo #13
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
--let $query = DELETE FROM t1 USING t1 WHERE 0
--let $select = SELECT * FROM t1 WHERE 0
--source include/explain_utils.inc
DROP TABLE t1;
--echo #14
CREATE TABLE t1 (a INT, b INT, UNIQUE KEY (a), KEY (b));
INSERT INTO t1 VALUES (3, 3), (7, 7);
--let $query = DELETE FROM t1 WHERE a = 3
--let $select = SELECT * FROM t1 WHERE a = 3
--source include/explain_utils.inc
DROP TABLE t1;
--echo #15
CREATE TABLE t1 (a INT, b INT, UNIQUE KEY (a), KEY (b));
INSERT INTO t1 VALUES (3, 3), (7, 7);
--let $query = DELETE FROM t1 WHERE a < 3
--let $select = SELECT * FROM t1 WHERE a < 3
--source include/explain_utils.inc
DROP TABLE t1;
--echo #16
CREATE TABLE t1 ( a int PRIMARY KEY );
--let $query = DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a
--let $select = SELECT * FROM t1 WHERE t1.a > 0 ORDER BY t1.a
--source include/explain_utils.inc
INSERT INTO t1 VALUES (1), (2), (3), (-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), (6), (7), (8), (9);
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);
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
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