Function `date_add` and `date_sub` don't check datetime field overflow

[qw4990]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.

mysql> set sql_mode='traditional';
mysql> create table t1 (d date);
mysql> insert into t1 (d) select date_add('2000-01-01',interval 8000 year);
mysql> insert into t1 (d) select date_sub('2000-01-01', INTERVAL 2001 YEAR);

2. What did you expect to see?
   In Mysql

mysql> set sql_mode='traditional';
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 (d) select date_add('2000-01-01',interval 8000 year);
ERROR 1441 (22008): Datetime function: datetime field overflow
mysql> insert into t1 (d) select date_sub('2000-01-01', INTERVAL 2001 YEAR);
ERROR 1441 (22008): Datetime function: datetime field overflow

3. What did you see instead?
   In TiDB

mysql> set sql_mode='traditional';
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 (d) select date_add('2000-01-01',interval 8000 year);
Query OK, 1 row affected (0.00 sec)
Records: 1  Duplicates: 0  Warnings: 0
mysql> insert into t1 (d) select date_sub('2000-01-01', INTERVAL 2001 YEAR);
Query OK, 1 row affected (0.00 sec)
Records: 1  Duplicates: 0  Warnings: 0

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?

+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tidb_version()                                                                                                                                                                                                                                                                                                                     |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v3.0.0-beta-197-g52c8267a7
Git Commit Hash: 52c8267a735dbb5e14b07c361ab8caa3efff5631
Git Branch: master
UTC Build Time: 2019-03-12 06:53:10
GoVersion: go version go1.12 darwin/amd64
Race Enabled: false
TiKV Min Version: 2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e
Check Table Before Drop: false |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)