SQL Server 分析SQL语句性能3种方法
这篇文章主要为大家详细介绍了SQL Server 分析SQL语句性能3种方法,具有一定的参考价值,可以用来参考一下。
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第一种方法:代码如下:
1 2 3 4 5 6 7 | <code> 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 </code> |
代码如下:
1 2 3 4 5 6 7 | <code> 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 </code> |
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Links: http://msdn.microsoft.com/zh-cn/library/ff650689.aspx ; http://msdn.microsoft.com/zh-cn/library/aa175244(v=SQL.80).aspxDemo For three kinds of Method:For SQL Script:代码如下:
1 2 3 | <code> select * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC </code> |
v Its Execution plan: (【图片暂缺】)
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v Its IO info: (【图片暂缺】)
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- - You can try one table with 100/10000/1000000 rows but create/don't create Clustered/NONCLUSTERED Index.
v Its Detail info Etc.: (【图片暂缺】)
【图片暂缺】For SQL Script:
代码如下:
1 2 3 | <code> select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC </code> |
v Its Execution plan: (【图片暂缺】)
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v Its IO info: (【图片暂缺】)
【图片暂缺】
v Its Detail info Etc.: (【图片暂缺】)
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For SQL Script:
代码如下:
1 2 3 4 | <code> select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC order by StagingOMC.COrgTPName </code> |
v Its Execution plan: (【图片暂缺】)
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v Its IO info: (【图片暂缺】)
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v Its Detail info Etc.: (【图片暂缺】)
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For SQL Script:
代码如下:
1 2 3 4 5 | <code> select top 100 StagingOMC.COrgTPName, COUNT (CorgID) from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC group by StagingOMC.COrgTPName order by StagingOMC.COrgTPName </code> |
v Its Execution plan: (【图片暂缺】)
【图片暂缺】
v Its IO info: (【图片暂缺】)
【图片暂缺】
v Its Detail info Etc.: (【图片暂缺】)
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- - 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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