摘要:
1 select * from Teachers2 alter table Teachers add Position nvarchar(50) /* 增加列 */3 alter table Teachers add Posi nvarchar(50) /* 增加列 */4 5 alter table Teachers drop column Posi /* 删除列 */6 7 alter table Teachers alter column Position int /* 修改数据类型 */8 9 EXEC sp_rename 'Teachers.Positio', 阅读全文