时间：2021-12-18 10:09:49 | 栏目：Mysql | 点击：次
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
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>
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>
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！