通过脚本更改字段和端口mysql表数据？

Question

mysql> desc oldtable;
+---------------+--------------+------+-----+---------+----------------+
| Field         | Type         | Null | Key | Default | Extra          |
+---------------+--------------+------+-----+---------+----------------+
| uid           | int(11)      | NO   | PRI | NULL    | auto_increment |
| active        | char(1)      | NO   |     | NULL    |                |
+---------------+--------------+------+-----+---------+----------------+


mysql> desc newtable;
+------------+--------------+------+-----+---------+----------------+
| Field      | Type         | Null | Key | Default | Extra          |
+------------+--------------+------+-----+---------+----------------+
| uid        | int(11)      | NO   | PRI | NULL    | auto_increment |
| active     | tinyint(1)   | NO   |     | 0       |                |
+------------+--------------+------+-----+---------+----------------+

我想将数据(转储)从oldtable移植到newtable.一个问题是,早期的表格使用char(1)表示存储值'Y'或'N'.现在newtable将它作为int存储为1或0.

如何在移植数据之前修复此问题？我应该使用shell脚本进行此类修复和移植吗？任何示例脚本或提示:)

Answer 1

INSERT INTO newtable 
SELECT uid,IF(active='Y',1,0) as active FROM oldtable

应该做的伎俩