Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
How does TOP work?
Message
De
19/11/2008 14:42:30
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
Visual FoxPro
Divers
Thread ID:
01362672
Message ID:
01362914
Vues:
22
Dang.. I missed that. As usual, you've pulled the answer out of the ether.

>Before VFP9, yes. In VFP9, it depends. From VFP9 help:
>
>"In Visual FoxPro 9.0, performance has been improved by eliminating records that do not qualify for the TOP N from the sort process as early as possible.
>
>The TOP N optimization is done only if the SET ENGINEBEHAVIOR Command is set to 90".
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform