定单表Orders的列OrderID的类型是小整型(smallint),根据业务的发展需要改为整型(integer),应该使用下面的哪条语句?
选项:
A:
A:ALTER?COLUMN?OrderID?integer?FROM?Orders??
B:
B:ALTER?TABLE?Orders?(?OrderID?integer?)?
C:
C:ALTER?TABLE?Orders?ALTER?COLUMN?OrderID?integer?
D:
D:ALTER?COLUMN?Orders.OrderID?integer
发布时间:2024-04-24 22:24:23