mysql-test/include/ctype_like_cond_propagation.inc


1
2
3
4
5
6
7
8
9
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
43
44
45
46
47
48
49
50
51
52
53
54
55

--echo #
--echo # MDEV-7149 Constant condition propagation erroneously applied for LIKE
--echo #

CREATE TABLE t1 AS SELECT REPEAT('a', 10) AS c1 LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('a'),('a ');
SELECT * FROM t1 WHERE CONCAT(c1)='a';
SELECT * FROM t1 WHERE CONCAT(c1) LIKE 'a ';
SELECT * FROM t1 WHERE CONCAT(c1)='a' AND CONCAT(c1) LIKE 'a ';
EXPLAIN EXTENDED SELECT * FROM t1 WHERE CONCAT(c1)='a' AND CONCAT(c1) LIKE 'a ';
DROP TABLE t1;

CREATE TABLE t1 AS SELECT REPEAT('a', 10) AS c1 LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('a'),('a ');
SELECT * FROM t1 WHERE 'a'=CONCAT(c1);
SELECT * FROM t1 WHERE 'a ' LIKE CONCAT(c1);
SELECT * FROM t1 WHERE 'a'=CONCAT(c1) AND 'a ' LIKE CONCAT(c1);
EXPLAIN EXTENDED SELECT * FROM t1 WHERE 'a'=CONCAT(c1) AND 'a ' LIKE CONCAT(c1);
DROP TABLE t1;

CREATE TABLE t1 AS SELECT REPEAT('a', 10) AS c1 LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('%'),('% ');
SELECT * FROM t1 WHERE '% '=CONCAT(c1);
SELECT * FROM t1 WHERE 'a' LIKE CONCAT(c1);
SELECT * FROM t1 WHERE '% '=CONCAT(c1) AND 'a' LIKE CONCAT(c1);
EXPLAIN EXTENDED SELECT * FROM t1 WHERE '% '=CONCAT(c1) AND 'a' LIKE CONCAT(c1);
DROP TABLE t1;

CREATE TABLE t1 AS SELECT REPEAT('a', 10) AS c1 LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('%'),('% ');
SELECT * FROM t1 WHERE '%'=CONCAT(c1);
SELECT * FROM t1 WHERE 'a' LIKE CONCAT(c1);
SELECT * FROM t1 WHERE '%'=CONCAT(c1) AND 'a' LIKE CONCAT(c1);
EXPLAIN EXTENDED SELECT * FROM t1 WHERE '%'=CONCAT(c1) AND 'a' LIKE CONCAT(c1);
DROP TABLE t1;

--echo #
--echo # MDEV-8694 Wrong result for SELECT..WHERE a NOT LIKE 'a ' AND a='a'
--echo #

CREATE TABLE t1 AS SELECT SPACE(10) AS a LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('a'),('a ');
SELECT a, LENGTH(a) FROM t1 WHERE a NOT LIKE 'a ';
SELECT a, LENGTH(a) FROM t1 WHERE a NOT LIKE 'a ' AND a='a';
EXPLAIN EXTENDED SELECT a, LENGTH(a) FROM t1 WHERE a NOT LIKE 'a ' AND a='a';
DROP TABLE t1;

--echo #
--echo # End of MDEV-8694
--echo #