mysql升级到5.7时,wordpress导数据报错1067的问题

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

drop table if exists `wp_comments`;
create table `wp_comments`  (
  `comment_id` bigint(20) unsigned not null auto_increment,
  `comment_post_id` bigint(20) unsigned not null default 0,
  `comment_author` tinytext character set utf8mb4 collate utf8mb4_unicode_520_ci not null,
  `comment_author_email` varchar(100) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '',
  `comment_author_url` varchar(200) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '',
  `comment_author_ip` varchar(100) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '',
  `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',
  `comment_content` text character set utf8mb4 collate utf8mb4_unicode_520_ci not null,
  `comment_karma` int(11) not null default 0,
  `comment_approved` varchar(20) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '1',
  `comment_agent` varchar(255) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '',
  `comment_type` varchar(20) character set utf8mb4 collate utf8mb4_unicode_520_ci not null default '',
  `comment_parent` bigint(20) unsigned not null default 0,
  `user_id` bigint(20) unsigned not null default 0,
  primary key (`comment_id`) using btree,
  index `comment_post_id`(`comment_post_id`) using btree,
  index `comment_approved_date_gmt`(`comment_approved`, `comment_date_gmt`) using btree,
  index `comment_date_gmt`(`comment_date_gmt`) using btree,
  index `comment_parent`(`comment_parent`) using btree,
  index `comment_author_email`(`comment_author_email`(10)) using btree
) engine = innodb auto_increment = 35 character set = utf8mb4 collate = utf8mb4_unicode_520_ci row_format = dynamic;

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

windows环境下修改mysql.ini配置文件就解决了~

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

ok问题解决，现在你导入或者创建表时看看！

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