版权声明:如若转载,请联系作者。 https://blog.csdn.net/liu16659/article/details/83115823
Mysql修改表字段类型
- 查看表结构
mysql> desc orders ;
+-------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+-------+
| shipaddress | varchar(20) | YES | MUL | NULL | |
| shipcity | varchar(20) | YES | | NULL | |
+-------------+-------------+------+-----+---------+-------+
2 rows in set (0.13 sec)
- 修改表字段
mysql> alter table orders modify column shipaddress int(20) ;
Query OK, 0 rows affected (0.85 sec)
Records: 0 Duplicates: 0 Warnings: 0
- 查看修改后的类型
mysql> desc orders ;
+-------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+-------+
| shipaddress | int(20) | YES | MUL | NULL | |
| shipcity | varchar(20) | YES | | NULL | |
+-------------+-------------+------+-----+---------+-------+
2 rows in set (0.00 sec)