导入数据库时报错1067–Invalid default value for ‘字段名’

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

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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

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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:

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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

ok问题解决,现在你导入或者创建表时看看!