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Fixed bug mdev-5132.

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Objects of the classes Item_func_isnull and Item_func_isnotnull
must have the flag sargable set to TRUE.
Set the value of the flag sargable only in constructors of the 
classes inherited from Item_int_func.
This commit is contained in:
Igor Babaev
2013-10-11 23:24:57 -07:00
parent 092a238864
commit 78b580b779
4 changed files with 34 additions and 13 deletions
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9
mysql-test/r/null.result
View File

@ -373,3 +373,12 @@ id select_type table type possible_keys key key_len ref rows Extra
SELECT * FROM t1 WHERE NOT (concat( dt, '1' ) IS NOT NULL);
dt
DROP TABLE t1;
#
# Bug mdev-5132: crash when exeicuting a join query
# with IS NULL and IS NOT NULL in where
#
CREATE TABLE t1 (a DATE, b INT, c INT, KEY(a), KEY(b), KEY(c)) ENGINE=MyISAM;
CREATE TABLE t2 (d DATE) ENGINE=MyISAM;
SELECT * FROM t1,t2 WHERE 1 IS NOT NULL AND t1.b IS NULL;
a b c d
DROP TABLE t1,t2;

12
mysql-test/t/null.test
View File

@ -283,3 +283,15 @@ SELECT * FROM t1 WHERE NOT (concat( dt, '1' ) IS NOT NULL);
SELECT * FROM t1 WHERE NOT (concat( dt, '1' ) IS NOT NULL);
DROP TABLE t1;
--echo #
--echo # Bug mdev-5132: crash when exeicuting a join query
--echo # with IS NULL and IS NOT NULL in where
--echo #
CREATE TABLE t1 (a DATE, b INT, c INT, KEY(a), KEY(b), KEY(c)) ENGINE=MyISAM;
CREATE TABLE t2 (d DATE) ENGINE=MyISAM;
SELECT * FROM t1,t2 WHERE 1 IS NOT NULL AND t1.b IS NULL;
DROP TABLE t1,t2;