我通过alter命令手动更改了某个表的auto_increment值,但第二天auto_increment种子值恢复为旧值。自动递增种子值在RDS上恢复为旧值
手动更改值(60亿)
mysql> select now();
+---------------------+
| now() |
+---------------------+
| 2017-02-28 18:48:41 |
+---------------------+
1 row in set (0.00 sec)
mysql> show create table fav_tab;
+-----------+-----------------------------------------------------------------------------------------------------------
| Table | Create Table
+-----------+-----------------------------------------------------------------------------------------------------------
| fav_shows | CREATE TABLE `fav_tab` (
`FAV_tab_ID` int(11) NOT NULL AUTO_INCREMENT,
`USER_ID` bigint(20) unsigned NOT NULL,
`SERIES_ID` varchar(50) DEFAULT NULL,
`Creation_dt` datetime DEFAULT NULL,
PRIMARY KEY (`FAV_tab_ID`),
KEY `USER_ID` (`USER_ID`),
KEY `IDX_SeriesID` (`SERIES_ID`),
CONSTRAINT `FK_fav_tab_user` FOREIGN KEY (`USER_ID`) REFERENCES `user` (`USER_ID`) ON DELETE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=6000000000 DEFAULT CHARSET=latin1 |
+-----------+-----------------------------------------------------------------------------------------------------------
1 row in set (0.00 sec)
第二天值自动(207458739)
mysql> select now();
+---------------------+
| now() |
+---------------------+
| 2017-03-01 11:23:26 |
+---------------------+
1 row in set (0.00 sec)
mysql> show create table fav_tab;
+-----------+-------------------------------------------------------------------------------------------------
| Table | Create Table
+-----------+-------------------------------------------------------------------------------------------------
| fav_shows | CREATE TABLE `fav_tab` (
`FAV_tab_ID` int(11) NOT NULL AUTO_INCREMENT,
`USER_ID` bigint(20) unsigned NOT NULL,
`SERIES_ID` varchar(50) DEFAULT NULL,
`Creation_dt` datetime DEFAULT NULL,
PRIMARY KEY (`FAV_tab_ID`),
KEY `USER_ID` (`USER_ID`),
KEY `IDX_SeriesID` (`SERIES_ID`),
CONSTRAINT `FK_fav_tab_user` FOREIGN KEY (`USER_ID`) REFERENCES `user` (`USER_ID`) ON DELETE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=207458739 DEFAULT CHARSET=latin1 |
+-----------+-------------------------------------------------------------------------------------------------
1 row in set (0.00 sec)
改变请帮我明白了,为什么发生这种情况,我们怎么能解决它?
正如您所发现的那样,使用该功能可能会造成麻烦。 –