alter table Fulfillment
add last_upadte_timestamp Datetime(7);
修改欄位名稱
ALTER TABLE Customer CHANGE Address Addr char(50);
修改欄位型態
ALTER TABLE Fulfillment ALTER COLUMN EmpID int
移除欄位
alter table [XXXXXXXX].[dbo].[XXXXXXX]
drop column last_upadte_timestamp ;
ALTER TABLE MEN DROP COLUMN Lname