如何在 MySQL 中创建一个以 1000 开头、并具有自增长的 INT 字段(不是主键)?
为此,你需要将 AUTO_INCREMENT 设置为 1000
alter table yourTableName AUTO_INCREMENT = 1000;
让我们先创建一个表
mysql> create table DemoTable639 ( StudentId int PRIMARY KEY, StudentStartId int AUTO_INCREMENT, StudentName VARCHAR(50), INDEX(StudentStartId) ); Query OK, 0 rows affected (0.86 sec)
以下查询用于将自增长值设置为 1000
mysql> alter table DemoTable639 AUTO_INCREMENT = 1000; Query OK, 0 rows affected (0.28 sec) Records: 0 Duplicates: 0 Warnings: 0
使用 insert 命令向表中插入一些记录
mysql> insert into DemoTable639(StudentId,StudentName) values(1,'John'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable639(StudentId,StudentName) values(2,'Chris'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable639(StudentId,StudentName) values(3,'Robert'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable639(StudentId,StudentName) values(4,'David'); Query OK, 1 row affected (0.16 sec)
使用 select 语句从表中显示所有记录
mysql> select *from DemoTable639;
这将产生以下输出
+-----------+----------------+-------------+ | StudentId | StudentStartId | StudentName | +-----------+----------------+-------------+ | 1 | 1000 | John | | 2 | 1001 | Chris | | 3 | 1002 | Robert | | 4 | 1003 | David | +-----------+----------------+-------------+ 4 rows in set (0.00 sec)
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