Incorrect query result
sayJason opened this issue · 3 comments
sayJason commented
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
CREATE TABLE t1(c1 BOOL);
INSERT INTO t1(c1) VALUES (1);
SELECT c1 FROM t1 WHERE 1| DATE_FORMAT(0, BINARY (c1 IS NULL)); -- actual: {}, expected: {1}
2. What did you expect to see? (Required)
SELECT returns the column c1's value 1
3. What did you see instead (Required)
SELECT returns nothing
4. What is your TiDB version? (Required)
Release Version: v7.0.0
Edition: Community
Git Commit Hash: 7376954
Git Branch: heads/refs/tags/v7.0.0
UTC Build Time: 2023-03-29 13:32:13
GoVersion: go1.20.2
Race Enabled: false
TiKV Min Version: 6.2.0-alpha
Check Table Before Drop: false
Store: tikv
seiya-annie commented
mysql> SELECT c1 FROM t1 WHERE 1| DATE_FORMAT(0, BINARY (c1 IS NULL));
Empty set, 1 warning (0.01 sec)
mysql> show warnings;
+---------+------+--------------------------------------------------------------------+
| Level | Code | Message |
+---------+------+--------------------------------------------------------------------+
| Warning | 1292 | evaluation failed: Incorrect datetime value: '0000-00-00 00:00:00' |
+---------+------+--------------------------------------------------------------------+
1 row in set (0.00 sec)
seiya-annie commented
in mysql8:
mysql> SELECT c1 FROM t1 WHERE 1| DATE_FORMAT(0, BINARY (c1 IS NULL));
+------+
| c1 |
+------+
| 1 |
+------+
1 row in set, 1 warning (0.00 sec)
mysql> show warnings;
+---------+------+----------------------------------------------------------------------------------------------+
| Level | Code | Message |
+---------+------+----------------------------------------------------------------------------------------------+
| Warning | 1287 | 'BINARY expr' is deprecated and will be removed in a future release. Please use CAST instead |
+---------+------+----------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)
mysql>