mysql自动增长恢复_mysql自动增长的有关问题，怎么恢复从1开始
匿名用户
1级
2016-11-27 回答
alter table t_Myxiao7 AUTO_INCREMENT 3;
mysql> create table t_Myxiao7(id int not null auto_increment primary key ,name v
archar(10), genda varchar(10),age int);
Query OK, 0 rows affected (0.08 sec)
mysql> insert into t_Myxiao7 values
-> (null,'张三','男',20),
-> (null,'王五','男',22),
-> (null,'李四','男',25),
-> (null,'陈大','男',19);
Query OK, 4 rows affected (0.05 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql>
mysql> select * from t_Myxiao7;
+----+------+-------+------+
| id | name | genda | age |
+----+------+-------+------+
| 1 | 张三 | 男 | 20 |
| 2 | 王五 | 男 | 22 |
| 3 | 李四 | 男 | 25 |
| 4 | 陈大 | 男 | 19 |
+----+------+-------+------+
4 rows in set (0.01 sec)
mysql> delete from t_Myxiao7 where id=3 or id =4;
Query OK, 2 rows affected (0.08 sec)
mysql> select * from t_Myxiao7;
+----+------+-------+------+
| id | name | genda | age |
+----+------+-------+------+
| 1 | 张三 | 男 | 20 |
| 2 | 王五 | 男 | 22 |
+----+------+-------+------+
2 rows in set (0.00 sec)
mysql> alter table t_Myxiao7 AUTO_INCREMENT 3;
Query OK, 2 rows affected (0.19 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> insert into t_Myxiao7 values
-> (null,'春哥','男','27');
Query OK, 1 row affected (0.06 sec)
mysql> select * from t_Myxiao7;
+----+------+-------+------+
| id | name | genda | age |
+----+------+-------+------+
| 1 | 张三 | 男 | 20 |
| 2 | 王五 | 男 | 22 |
| 3 | 春哥 | 男 | 27 |
+----+------+-------+------+
3 rows in set (0.00 sec)
mysql>