分析SQL语句性能3种方法分享
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.micro
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: <p><img alt src="http://img.558idc.com/uploadfile/allimg/210405/115245EX-0.png"></p>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 <p>v Its Execution plan: (<img alt src="http://img.558idc.com/uploadfile/allimg/210405/1152451323-1.png">)</p>
v Its IO info: (
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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.: (
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For SQL Script:
v Its IO info: (
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v Its Detail info Etc.: (
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For SQL Script:
v Its IO info: (
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v Its Detail info Etc.: (
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For SQL Script:
v Its IO info: (
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v Its Detail info Etc.: (
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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.
