SQL @@Rowcount

 

@@Rowcount主要是返回上次sql语句所影响的数据行数

SELECT * FROM dbo.Region AS R
SELECT  @@rowcount
SELECT * FROM dbo.Region AS R WHERE R.Id <6
SELECT  @@rowcount

--我们可以使用@@rowcount来作递归或循环
while @@rowcount>0
begin
set @n=@n+1
select * from Region where id=@n
end