MySql查看与修改auto_increment方法

时间:2021-02-05 09:07:31

本文将介绍如何查看表的auto_increment及其修改方法

查看表当前auto_increment

表的基本数据是存放在mysql的information_schema库的tables表中,我们可以使用sql查出。

select auto_increment from information_schema.tables where table_schema='db name' and table_name='table name';



例子:查看 test_user 库的 userauto_increment

mysql> select auto_increment from information_schema.tables where table_schema='test_user' and table_name='user';
+----------------+

| auto_increment |
+----------------+

| 1002 |
+----------------+

1 row in set (0.04 sec)


修改表auto_increment

alter table tablename auto_increment=NUMBER;



例子:修改 test_useruserauto_increment10000

mysql> alter table test_user.user auto_increment=10000;
Query OK, 0 rows affected (0.12 sec)
Records: 0 Duplicates: 0 Warnings: 0

mysql> select auto_increment from information_schema.tables where table_schema='test_user' and table_name='user';
+----------------+

| auto_increment |
+----------------+

| 10000 |
+----------------+

1 row in set (0.04 sec)