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SQL Server 2005
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SQL Server 2005 General Discussion
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Query Optimizer
Query Optimizer
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dreamslogic
dreamslogic
Posted Saturday, June 13, 2009 7:38 PM
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You have an SQL query that is referencing multiple tables and views. Using a query optimizer you discover your current views are causing the performance drain. You don’t want to replicate the data your view is using in a Table. Of the following, which solution should you choose?
Post #734502
Steve Jones - SSC Editor
Steve Jones - SSC Editor
Posted Saturday, June 13, 2009 9:42 PM
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Which choices?
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Forum Etiquette: How to post data/code on a forum to get the best help
Post #734516
dreamslogic
dreamslogic
Posted Saturday, June 13, 2009 10:16 PM
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Hi Steve - Here are the choices
Create a new View
Use a cursor and store the data in a temporary table
Create an Indexed View
Create a User Defined Function to return the needed data
Create a new Table
Post #734527
RBarryYoung
RBarryYoung
Posted Saturday, June 13, 2009 11:49 PM
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dreamslogic (6/13/2009)
Hi Steve - Here are the choices
Create a new View
Use a cursor and store the data in a temporary table
Create an Indexed View
Create a User Defined Function to return the needed data
Create a new Table
That would have an awful lot to do with what the supposed problem with the old views was. Views do not usually cause performance problems, but using them inefficiently can.
-- RBarryYoung
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Post #734538
GilaMonster
GilaMonster
Posted Sunday, June 14, 2009 3:46 AM
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dreamslogic (6/13/2009)
Hi Steve - Here are the choices
Create a new View
Use a cursor and store the data in a temporary table
Create an Indexed View
Create a User Defined Function to return the needed data
Create a new Table
None of the above. Rewrite the query and/or view so that they are written optimally and add any necessary indexes.
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 #734571
Steve Jones - SSC Editor
Steve Jones - SSC Editor
Posted Sunday, June 14, 2009 9:18 AM
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Or provide more information. A view isn't anything more than a query that is written over a table(s). The query optimizer looks at that query and includes it in the query you are writing on a view, looking to optimize things.
There is no general advice outside of don't use a cursor.
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Post #734609
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