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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.
This commit is contained in:
unknown
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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21
mysql-test/r/select.result
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@ -3390,3 +3390,24 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where 1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 2 Using where
DROP TABLE t1,t2; DROP TABLE t1,t2;
CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
INSERT t1 SET i = 0;
UPDATE t1 SET i = -1;
Warnings:
Warning 1264 Out of range value adjusted for column 'i' at row 1
SELECT * FROM t1;
i
0
UPDATE t1 SET i = CAST(i - 1 AS SIGNED);
Warnings:
Warning 1264 Out of range value adjusted for column 'i' at row 1
SELECT * FROM t1;
i
0
UPDATE t1 SET i = i - 1;
Warnings:
Warning 1264 Out of range value adjusted for column 'i' at row 1
SELECT * FROM t1;
i
255
DROP TABLE t1;

15
mysql-test/t/select.test
View File

@ -2871,3 +2871,18 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
DROP TABLE t1,t2; 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;