MySQL 如何在列值中附加000

使用ZEROFILL的概念附加000。首先创建一个表 –

mysql> create table DemoTable1913
    (
    Code int(4) ZEROFILL AUTO_INCREMENT NOT NULL,
    PRIMARY KEY(Code)
    );
Query OK, 0 rows affected (0.00 sec)

使用插入命令在表中插入一些记录 –

mysql> insert into DemoTable1913 values(1);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1913 values(2);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1913 values(3);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1913 values(4);
Query OK, 1 row affected (0.00 sec)

使用选择语句从表中显示所有记录 –

mysql> select * from DemoTable1913;

这将产生以下输出 –

+------+
| Code |
+------+
| 0001 |
| 0002 |
| 0003 |
| 0004 |
+------+
4 rows in set (0.00 sec)

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