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Added test case for Bug#18712: Truncation problem. The test

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is only to make sure that this will not be fixed, as it is
intended behaviour. Documentation will be improved accordingly.
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2006-05-04 17:05:21 +03:00
parent 473ad8c986
commit 231f4964ad
2 changed files with 36 additions and 0 deletions
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15
mysql-test/t/select.test
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@@ -2871,3 +2871,18 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
DROP TABLE t1,t2;
#
# Bug#18712: Truncation problem (needs just documenting and test
# cases to prevent fixing this accidently. It is intended behaviour)
#
CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
INSERT t1 SET i = 0;
UPDATE t1 SET i = -1;
SELECT * FROM t1;
UPDATE t1 SET i = CAST(i - 1 AS SIGNED);
SELECT * FROM t1;
UPDATE t1 SET i = i - 1;
SELECT * FROM t1;
DROP TABLE t1;