在SQL Server中，为了提高存储过程的性能，下面哪条语句用于编写存储过程的开头？( )
SET NOCOUNT ON
SET STATISTICS IO ON
SET NOCOUNT OFF
SET STATISTICS TIME ON
SET STATISTICS IO OFF
青云测评
青云测评
在SQL Server中，为了提高存储过程的性能，下面哪条语句用于编写存储过程的开头？( )
SET NOCOUNT ON
SET STATISTICS IO ON
SET NOCOUNT OFF
SET STATISTICS TIME ON
SET STATISTICS IO OFF
