分析SQL语句性能3种技巧分享
发布时间：2021-12-03 16:51:10 所属栏目：PHP教程 来源：互联网
导读：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: 第二种方法: 复制代码 代码如下: MINIMS
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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: 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: 第三种方法: Links: ; (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 v Its Execution plan: () v Its IO info: () - - You can try one table with 100/10000/1000000 rows but create/don't create Clustered/NONCLUSTERED Index. v Its Detail info Etc.: () For SQL Script: 复制代码 代码如下: select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC v Its Execution plan: () v Its IO info: () v Its Detail info Etc.: () For SQL Script: 复制代码 代码如下: select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC order by StagingOMC.COrgTPName v Its Execution plan: ( ) v Its IO info: () v Its Detail info Etc.: () 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 v Its Execution plan: () v Its IO info: () v Its Detail info Etc.: () - - 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.  （编辑：应用网_丽江站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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