Click here to monitor SSC
SQLServerCentral is supported by Red Gate Software Ltd.
 
Log in  ::  Register  ::  Not logged in
 
 


 
     
Recent Posts
   
Popular Topics
Home   
Search
    Members    Calendar    Who's On

Home » Article Discussions » Article Discussions by Author » Discuss content posted by Hardik Doshi » Query text during caching in SQL 2005
Add to briefcase
26 posts, Page 1 of 3
123»»»

Query text during caching in SQL 2005 Expand / Collapse
Rate Topic
Display Mode
Topic Options
Author
Message
Hardy21
Posted Sunday, November 14, 2010 8:09 AM


SSC Eights!

SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!

Group: General Forum Members
Last Login: Yesterday @ 7:11 AM
Points: 877, Visits: 1,159
Comments posted to this topic are about the item Query text during caching in SQL 2005

Thanks
Post #1020430
bitbucket-25253
Posted Sunday, November 14, 2010 8:16 AM


SSCertifiable

SSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiable

Group: General Forum Members
Last Login: Today @ 6:46 AM
Points: 5,102, Visits: 20,207
Nice question ... learned something

If everything seems to be going well, you have obviously overlooked something.

Ron

Please help us, help you -before posting a question please read
Before posting a performance problem please read
Post #1020432
Carlo Romagnano
Posted Sunday, November 14, 2010 3:57 PM


SSCommitted

SSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommitted

Group: General Forum Members
Last Login: Yesterday @ 1:51 AM
Points: 1,972, Visits: 1,821
Very bad worded question:
Query text during caching in SQL 2005

This is related to SQL Server caching. What should be the output of following T-SQL query:

USE AdventureWorks2008R2
GO
EXEC uspPrintError
GO
SELECT st.text QueryText
FROM sys.dm_exec_cached_plans 
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS st
WHERE text LIKE N'%uspPrintError%';

In the title, it refers to sql2005, than it uses AdventureWorks2008R2
In sql2005, I get an error:
"plan_handle" is not a recognized table hints option.
I also tried to run 
SELECT text FROM sys.dm_exec_sql_text(0x0500FF7F79BB1808C8808A04000000000000000000000000)

But it returns this:
-- uspPrintError prints error information about the error that caused
-- execution to jump to the CATCH block of a TRY...CATCH construct.
-- Should be executed from within the scope of a CATCH block otherwise
-- it will return without printing any error information.
CREATE PROCEDURE [dbo].[uspPrintError]
AS
BEGIN
SET NOCOUNT ON;

-- Print error information.
PRINT 'Error ' + CONVERT(varchar(50), ERROR_NUMBER()) +
', Severity ' + CONVERT(varchar(5), ERROR_SEVERITY()) +
', State ' + CONVERT(varchar(5), ERROR_STATE()) +
', Procedure ' + ISNULL(ERROR_PROCEDURE(), '-') +
', Line ' + CONVERT(varchar(5), ERROR_LINE());
PRINT ERROR_MESSAGE();
END;
At end I answered BOTH: EXEC ... and text for the stored proc.
The explanation seems to be approximate!
Post #1020486
Hugo Kornelis
Posted Sunday, November 14, 2010 5:22 PM


SSCertifiable

SSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiableSSCertifiable

Group: General Forum Members
Last Login: Today @ 9:28 AM
Points: 5,243, Visits: 7,054
Good question. I answered wrong; I thought all statements were cached.

Hardik, do you have any references where I can read more about this?

Hugo Kornelis, SQL Server MVP
Visit my SQL Server blog: http://sqlblog.com/blogs/hugo_kornelis
Post #1020495
Hardy21
Posted Sunday, November 14, 2010 9:38 PM


SSC Eights!

SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!

Group: General Forum Members
Last Login: Yesterday @ 7:11 AM
Points: 877, Visits: 1,159
Carlo Romagnano (11/14/2010)
Very bad worded question:
Query text during caching in SQL 2005

This is related to SQL Server caching. What should be the output of following T-SQL query:

USE AdventureWorks2008R2
GO
EXEC uspPrintError
GO
SELECT st.text QueryText
FROM sys.dm_exec_cached_plans 
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS st
WHERE text LIKE N'%uspPrintError%';

In the title, it refers to sql2005, than it uses AdventureWorks2008R2
In sql2005, I get an error:
"plan_handle" is not a recognized table hints option.
I also tried to run 
SELECT text FROM sys.dm_exec_sql_text(0x0500FF7F79BB1808C8808A04000000000000000000000000)

But it returns this:
-- uspPrintError prints error information about the error that caused
-- execution to jump to the CATCH block of a TRY...CATCH construct.
-- Should be executed from within the scope of a CATCH block otherwise
-- it will return without printing any error information.
CREATE PROCEDURE [dbo].[uspPrintError]
AS
BEGIN
SET NOCOUNT ON;

-- Print error information.
PRINT 'Error ' + CONVERT(varchar(50), ERROR_NUMBER()) +
', Severity ' + CONVERT(varchar(5), ERROR_SEVERITY()) +
', State ' + CONVERT(varchar(5), ERROR_STATE()) +
', Procedure ' + ISNULL(ERROR_PROCEDURE(), '-') +
', Line ' + CONVERT(varchar(5), ERROR_LINE());
PRINT ERROR_MESSAGE();
END;
At end I answered BOTH: EXEC ... and text for the stored proc.
The explanation seems to be approximate!

Thanks Carlo for pointing out the typo mistake on header (title). This behavior is same for SQL Server 2005 & in SQL 2008 and I used AdventureWorks2008R2 database so has idea that it is SQL2k8 R2 database provided by Microsoft.

Also, thanks for the validation of explanation provided.

Thanks
Post #1020534
Koen Verbeeck
Posted Monday, November 15, 2010 1:37 AM


SSCrazy Eights

SSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy EightsSSCrazy Eights

Group: General Forum Members
Last Login: Today @ 6:39 AM
Points: 9,376, Visits: 6,472
Nice question, definately learned something today.

However, if I run the query in SQL Server 2008 using the AdventureWorks2008 database, I get an extra result: the select query with the cross apply used in the question itself.


How to post forum questions.
Need an answer? No, you need a question.
What’s the deal with Excel & SSIS?

Member of LinkedIn. My blog at LessThanDot.

MCSA SQL Server 2012 - MCSE Business Intelligence
Post #1020594
Nakul Vachhrajani
Posted Monday, November 15, 2010 1:39 AM


Ten Centuries

Ten CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen Centuries

Group: General Forum Members
Last Login: Today @ 1:02 AM
Points: 1,277, Visits: 1,609
Good question, Hardik!
I answered wrong because I was distracted by the use of the stored procedure uspPrintError

Thanks & Regards,
Nakul Vachhrajani.
http://beyondrelational.com/modules/2/blogs/77/nakuls-blog.aspx
Be courteous. Drive responsibly.

Follow me on
Twitter: @nakulv_sql
Google Plus: +Nakul
Post #1020595
Carlo Romagnano
Posted Monday, November 15, 2010 2:02 AM


SSCommitted

SSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommittedSSCommitted

Group: General Forum Members
Last Login: Yesterday @ 1:51 AM
Points: 1,972, Visits: 1,821
Execute the batch without the 'GO'

EXEC uspLogError
SELECT st.text QueryText,objtype
FROM sys.dm_exec_cached_plans 
CROSS APPLY sys.dm_exec_sql_text(plan_handle) AS st
WHERE text LIKE N'%uspLogError%'

Result:
CREATE PROCEDURE [dbo].[uspLogError] ....,'Proc'
EXEC uspLogError SELECT st.text QueryText FROM sys.dm_exec_cached_plans ....,'Adhoc'


The body of the stored procedure is cached in the objtype = 'Proc' (see also other info about the proc). the second record is the plan stored with objtype = 'Adhoc'

See also: http://msdn.microsoft.com/en-us/library/ms187404.aspx
Post #1020600
cengland0
Posted Monday, November 15, 2010 5:40 AM


Ten Centuries

Ten CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen CenturiesTen Centuries

Group: General Forum Members
Last Login: Thursday, January 24, 2013 9:59 PM
Points: 1,354, Visits: 1,299
Any BOL links you can provide regarding this? There wasn't one in the explanation.
Post #1020680
RichardDouglas
Posted Monday, November 15, 2010 6:23 AM
SSC Eights!

SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!SSC Eights!

Group: General Forum Members
Last Login: Monday, May 20, 2013 3:35 AM
Points: 969, Visits: 650
Good question, thanks for taking the time to help educate the SQL community.

I look at these DMV's a lot so thankfully answered this one correctly.

Hope this helps,
Rich
Post #1020702
« Prev Topic | Next Topic »

Add to briefcase
26 posts, Page 1 of 3
123»»»

Permissions Expand / Collapse

 
 
Copyright © 2002-2013 Simple Talk Publishing. All Rights Reserved. Privacy Policy. Terms of Use. Report Abuse.