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最近把mysql升级到5.7了,wordpress导数据报错

Invalid default value for ‘comment_date’

原因出在类似这样的语句

 `comment_date` datetime(0) NOT NULL DEFAULT '0000-00-00 00:00:00',
  `comment_date_gmt` datetime(0) NOT NULL DEFAULT '0000-00-00 00:00:00',

这种报错多是你mysql升级到5.7而引起的默认值不兼容的问题。看看你的字段名是什么,我的是时间字段,类型是datetime。想到可能是类型的默认值被限制了,查看 sql_mode。果然:NO_ZERO_IN_DATE,NO_ZERO_DATE这两个参数限制时间不能为0

查看 sql_mode

mysql> show variables like 'sql_mode';
+---------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| sql_mode | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+---------------+-------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql>

临时修改:

mysql> set session
 -> sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql>

永久修改:

可以直接修改my.cnf文件

例如:     vim /etc/my.cnf

在[mysqld]下面添加如下列:

sql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

期待你一针见血的评论,Come on!