分析SQL语句性能3种方法分享

时间:2022-04-24 04:04:35

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: 

分析SQL语句性能3种方法分享

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 

v  Its Execution plan: (分析SQL语句性能3种方法分享)

 

分析SQL语句性能3种方法分享

v  Its IO info: (分析SQL语句性能3种方法分享)

 

分析SQL语句性能3种方法分享

-  -  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语句性能3种方法分享)

分析SQL语句性能3种方法分享
For SQL Script:

复制代码代码如下:


select top 100 * from dbEBMSStaging.dbo.MSSalesTxlatOrganizationMaster_Corg StagingOMC 

 

v  Its Execution plan: (分析SQL语句性能3种方法分享)

分析SQL语句性能3种方法分享

v  Its IO info: (分析SQL语句性能3种方法分享)

 

分析SQL语句性能3种方法分享

v  Its Detail info Etc.: (分析SQL语句性能3种方法分享)

分析SQL语句性能3种方法分享

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: (   分析SQL语句性能3种方法分享)

 

分析SQL语句性能3种方法分享

v  Its IO info: (分析SQL语句性能3种方法分享)

分析SQL语句性能3种方法分享

v  Its Detail info Etc.: (分析SQL语句性能3种方法分享)

分析SQL语句性能3种方法分享

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: (分析SQL语句性能3种方法分享)

 分析SQL语句性能3种方法分享

 

v  Its IO info: (分析SQL语句性能3种方法分享)

 分析SQL语句性能3种方法分享

v  Its Detail info Etc.: (分析SQL语句性能3种方法分享)

 分析SQL语句性能3种方法分享

 

-  -  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.