sql server 更新/新增一条语句，返回其中某一列的值 inserted，@@IDENTITY()

一：更新/新增一条语句，返回其中某一列的值

update product set state=1 

output inserted.state

where id=@id

二：新增一条语句，返回自增列Id

insert into Product values();select @@IDENTITY() as new_id