how to know Graphical Execution Plans works through xmlcode in sql server?

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how to know Graphical Execution Plans works through xmlcode in sql server?

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Satish Hottur

Posted Wednesday, December 19, 2012 1:11 AM

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i am trying to figureout this issue if anyone know please let me know the process of this..

Issue with Graphical Execution plan how it works/internally

If we run this below query it returns result in one column in xml code..
If we click this link it opens graphical execution plan.

SELECT
[st].[objectid]
, [st].[text]
, [qp].[query_plan]
FROM sys.dm_exec_cached_plans cp
CROSS APPLY sys.dm_exec_sql_text ( cp.plan_handle ) st
CROSS APPLY sys.dm_exec_query_plan ( cp.plan_handle ) qp ;

May i know the process how it work it little bit urgent..

advanced Thanks for your suggestions.I am waiting for your replies....

Post #1398222

GilaMonster

Posted Wednesday, December 19, 2012 1:27 AM

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What specifically are you looking to know and why?

Gail Shaw
Microsoft Certified Master: SQL Server 2008, MVP
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Post #1398226

Sean Pearce

Posted Wednesday, December 19, 2012 5:50 AM

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Post #1398338

Satish Hottur

Posted Wednesday, December 19, 2012 7:07 AM

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SELECT
[qp].[query_plan]
FROM sys.dm_exec_cached_plans cp
CROSS APPLY sys.dm_exec_sql_text ( cp.plan_handle ) st
CROSS APPLY sys.dm_exec_query_plan ( cp.plan_handle ) qp ;

1) If we execute this query it returns result in xml code.
2) If we click that xml code it opens executionplan.sqlplan tab in ssms it shows Graphical Execution plan.

I am trying to findout how it works internally...... Crying

Please let me know if anyone knows.

Post #1398386

anthony.green

Posted Wednesday, December 19, 2012 7:13 AM

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The XML name space in the XML is <ShowPlanXML xmlns="http://schemas.microsoft.com/sqlserver/2004/07/showplan".....> so it knows that its a query plan and then opens it in the correct format

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Post #1398389

GilaMonster

Posted Wednesday, December 19, 2012 9:06 AM

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Satish Hottur (12/19/2012)

I am trying to findout how it works internally...... Crying

How what works? The graphical view of the XML file? That's just an SSMS feature, the management tool can interpret the XML plan and display it in a graphical format. Nothing to do with SQL Server itself.

What are you trying to figure out here?

Gail Shaw
Microsoft Certified Master: SQL Server 2008, MVP
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

Post #1398483

GSquared

Posted Wednesday, December 19, 2012 9:09 AM

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The graphical plans aren't "internal". They're done in the presentation layer (usually Management Studio) from the XML.

If you want to copy that functionality to a different application, you'll have to write code for it. It's not something SQL Server does, it's something applications do.

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Post #1398489

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