sql字段如果需要修改，修改后添加重命名的话，应该如何实现呢？下面就教您sql字段修改并添加重命名的方法，希望对你学习sql字段方面有所帮助 。
- alter table dbo.JiuHuo_User add ss varchar(50)
- alter table JiuHuo_User alter column ss ss1 varchar(50)
- exec sp_rename JiuHuo_User,ss,ss1,column
- exec sp_rename JiuHuo_User.ss,addr
- alter table JiuHuo_User alter column addr int
- alter table JiuHuo_User drop column addr
- exec sp_rename JiuHuo_User,JiuHuo_User
- alter table JiuHuo_User sp_rename JiuHuo_User1
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- alter table dbo.JiuHuo_User add sss int IDENTITY(100000,1)
- alter table JiuHuo_User alter column ss int IDENTITY(1,1)
- select * from [user]
- update [user] set city=000000000000
