sql-server – 在SQL Server查询中关闭NOCOUNT有什么优点和缺点

解决方法

SET NOCOUNT ON prevents the sending of
DONE_IN_PROC messages to the client
for each statement in a stored
procedure. For stored procedures that
contain several statements that do not
return much actual data,setting SET
NOCOUNT to ON can provide a
significant performance boost,because
network traffic is greatly reduced.

详见http://msdn.microsoft.com/en-us/library/ms189837.aspx.
此外,关于SQLServerCentral的这篇文章对此有很大的了解：
Performance Effects of NOCOUNT

（编辑：李大同）

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