分析SQL语句性能3种方法分享

第一种方法

Link: http://msdn.microsoft./zh-/library/ms184361.aspx
第二种方法:

Link: http://msdn.microsoft./zh-/library/ms187735
第三种方法:

Links: http://msdn.microsoft./zh-/library/ff650689.aspx ; http://msdn.microsoft./zh-/library/aa175244(v=SQL.80).aspx
Demo For three kinds of Method:
For SQL Script:

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:

v  Its Execution plan: ()

v  Its IO info: ()

 

v  Its Detail info Etc.: ()

For SQL Script:

v  Its Execution plan: (   )

 

v  Its IO info: ()

v  Its Detail info Etc.: ()

For SQL Script:

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 inter web are right or wrong about how to improve SQL Script performance.