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Slow from VFP passthru fast from analyzer (posted in SQL
Message
De
30/03/2007 07:26:09
Walter Meester
HoogkarspelPays-Bas
 
 
À
29/03/2007 16:28:47
Information générale
Forum:
Visual FoxPro
Catégorie:
Client/serveur
Versions des environnements
Visual FoxPro:
VFP 9
Divers
Thread ID:
01210060
Message ID:
01210277
Vues:
15
Glen,

I've seen this many times. This probably due to the optimizer reusing plans. The QA by default recompiles the execution plan while the query passed by the QD reuses a previous queryplan

Look at the books online at the WITH RECOMPILE option. Create a SQL proc with recompile option as see whether this speed up things.

Walter,



>I have an application written in VFP which executes a query against a SQL 2000 table with approx. 3,500,000 records. this table has an index on a computed field called Squeezedesc (replace(description,' ','') ).
>
>When I run this query in SQL Query Analyser it is done in negligible time whereas when executed from the app it takes 38 seconds???? Here is my query:
>
>Select inv.uid as idinv,inv.isbn13 as sku1 From inv Where SqueezeDesc like 'thehook%'
>
>
>Is this an expected behavior?
>
>Glenn
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