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分析SQL語句性能3種方法分享

2024-08-31 00:44:59
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供稿:網友
第一種方法:

復制代碼 代碼如下:


Minimsdn.com為您提供的代碼:
-- 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:
第二種方法:

復制代碼 代碼如下:


MINIMSDN.com為您提供的代碼:
--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:
第三種方法:

分析SQL語句性能3種方法分享

Links: ; (v=SQL.80).aspx
Demo For three kinds of Method:
For SQL Script:

復制代碼 代碼如下:


select * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC

v Its Execution plan: ()

分析SQL語句性能3種方法分享

v Its IO info: ()

分析SQL語句性能3種方法分享

- - You can try one table with 100/10000/1000000 rows but create/don't create Clustered/NONCLUSTERED Index.

v Its Detail info Etc.: ()

分析SQL語句性能3種方法分享


For SQL Script:

復制代碼 代碼如下:


select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC


v Its Execution plan: ()

分析SQL語句性能3種方法分享

v Its IO info: ()

分析SQL語句性能3種方法分享

v Its Detail info Etc.: ()

分析SQL語句性能3種方法分享

For SQL Script:

復制代碼 代碼如下:


select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
order by StagingOMC.COrgTPName


v Its Execution plan: ( )

分析SQL語句性能3種方法分享

v Its IO info: ()

分析SQL語句性能3種方法分享

v Its Detail info Etc.: ()

分析SQL語句性能3種方法分享

For SQL Script:

復制代碼 代碼如下:


select top 100 StagingOMC.COrgTPName,COUNT(CorgID) from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC
group by StagingOMC.COrgTPName
order by StagingOMC.COrgTPName


v Its Execution plan: ()

分析SQL語句性能3種方法分享

v Its IO info: ()

分析SQL語句性能3種方法分享

v Its Detail info Etc.: ()

分析SQL語句性能3種方法分享

- - 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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