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MDEV-8222 "string_field LIKE int_const" returns a wrong result in case of UCS2

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MDEV-8257 Erroneous "Impossible where" when mixing decimal comparison and LIKE
This commit is contained in:
Alexander Barkov
2015-06-02 15:42:01 +04:00
parent 8f92a70e21
commit 3709c7fc6d
7 changed files with 126 additions and 37 deletions
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29
mysql-test/r/func_like.result
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@ -200,3 +200,32 @@ SELECT 'a' LIKE REPEAT('',0);
SELECT 'a' LIKE EXTRACTVALUE('bar','qux');
'a' LIKE EXTRACTVALUE('bar','qux')
0
#
# End of 10.0 tests
#
#
# Start of 10.1 tests
#
#
# MDEV-8257 Erroneous "Impossible where" when mixing decimal comparison and LIKE
#
CREATE TABLE t1 (a DECIMAL(8,2));
INSERT INTO t1 VALUES (10),(20);
SELECT * FROM t1 WHERE a=10.0;
a
10.00
SELECT * FROM t1 WHERE a LIKE 10.00;
a
10.00
SELECT * FROM t1 WHERE a=10.0 AND a LIKE 10.00;
a
10.00
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=10.0 AND a LIKE 10.00;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` = 10.0) and (`test`.`t1`.`a` like 10.00))
DROP TABLE t1;
#
# End of 10.1 tests
#