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Bug#21555: incorrect behavior with INSERT ... ON DUPL KEY UPDATE and VALUES

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VALUES() was considered a constant. This caused replacing 
 (or pre-calculating) it using uninitialized values before the actual
 execution takes place.
 Mark it as a non-constant (still not dependent of tables) to prevent
 the pre-calculation.
This commit is contained in:
gkodinov/kgeorge@macbook.gmz
2006-09-08 10:24:14 +03:00
parent 580d4a0df4
commit 719f836cc4
3 changed files with 52 additions and 3 deletions
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23
mysql-test/t/insert_update.test
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@@ -115,4 +115,27 @@ INSERT INTO t1 ( a ) SELECT 0 ON DUPLICATE KEY UPDATE a = a + VALUES (a) ;
DROP TABLE t1;
#
# Bug#21555: incorrect behavior with INSERT ... ON DUPL KEY UPDATE and VALUES
#
# End of 4.1 tests
CREATE TABLE t1
(
a BIGINT UNSIGNED,
b BIGINT UNSIGNED,
PRIMARY KEY (a)
);
INSERT INTO t1 VALUES (45, 1) ON DUPLICATE KEY UPDATE b =
IF(VALUES(b) > t1.b, VALUES(b), t1.b);
SELECT * FROM t1;
INSERT INTO t1 VALUES (45, 2) ON DUPLICATE KEY UPDATE b =
IF(VALUES(b) > t1.b, VALUES(b), t1.b);
SELECT * FROM t1;
INSERT INTO t1 VALUES (45, 1) ON DUPLICATE KEY UPDATE b =
IF(VALUES(b) > t1.b, VALUES(b), t1.b);
SELECT * FROM t1;
DROP TABLE t1;