分析SQL语句性能3种方法分享
(编辑:jimmy 日期: 2024/12/24 浏览:3 次 )
第一种方法:
复制代码 代码如下:
Minimsdn.com为您提供的代码:
-- Turn ON [Display IO Info when execute SQL]
SET STATISTICS IO ON
-- Turn OFF [Display IO Info when execute SQL]
SET STATISTICS IO OFF
Link: http://msdn.microsoft.com/zh-cn/library/ms184361.aspx
第二种方法:
复制代码 代码如下:
MINIMSDN.com为您提供的代码:
--Turn ON [Display detail info and the request for resources]
SET SHOWPLAN_ALL ON
-- Turn OFF [Display detail info and the request for resources]
SET SHOWPLAN_ALL OFF
Link: http://msdn.microsoft.com/zh-cn/library/ms187735
第三种方法:
Links: http://msdn.microsoft.com/zh-cn/library/ff650689.aspx ; http://msdn.microsoft.com/zh-cn/library/aa175244(v=SQL.80).aspx
Demo For three kinds of Method:
For SQL Script:
复制代码 代码如下:
select * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
order by StagingOMC.COrgTPName
select top 100 StagingOMC.COrgTPName,COUNT(CorgID) from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
group by StagingOMC.COrgTPName
order by StagingOMC.COrgTPName
复制代码 代码如下:
Minimsdn.com为您提供的代码:
-- Turn ON [Display IO Info when execute SQL]
SET STATISTICS IO ON
-- Turn OFF [Display IO Info when execute SQL]
SET STATISTICS IO OFF
Link: http://msdn.microsoft.com/zh-cn/library/ms184361.aspx
第二种方法:
复制代码 代码如下:
MINIMSDN.com为您提供的代码:
--Turn ON [Display detail info and the request for resources]
SET SHOWPLAN_ALL ON
-- Turn OFF [Display detail info and the request for resources]
SET SHOWPLAN_ALL OFF
Link: http://msdn.microsoft.com/zh-cn/library/ms187735
第三种方法:
Links: http://msdn.microsoft.com/zh-cn/library/ff650689.aspx ; http://msdn.microsoft.com/zh-cn/library/aa175244(v=SQL.80).aspx
Demo For three kinds of Method:
For SQL Script:
复制代码 代码如下:
select * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
- - You can try one table with 100/10000/1000000 rows but create/don't create Clustered/NONCLUSTERED Index.
复制代码 代码如下:select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
For SQL Script:
复制代码 代码如下:select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
order by StagingOMC.COrgTPName
For SQL Script:
复制代码 代码如下:select top 100 StagingOMC.COrgTPName,COUNT(CorgID) from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
group by StagingOMC.COrgTPName
order by StagingOMC.COrgTPName
- - By these three kinds of methods, you can try to check those words in the internet web are right or wrong about how to improve SQL Script performance.
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