Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Why is Optimization 'Partial'
Message
 
 
À
05/10/1997 09:32:07
Information générale
Forum:
Visual FoxPro
Catégorie:
Problèmes
Divers
Thread ID:
00052442
Message ID:
00053346
Vues:
28
>I have nothing more to go on that you do *except* that I have had experience that VFP still goes to the actual table EVEN IF the fields in question are ALL indexes.


Jim, have you noticed any difference between these 2 constructs? Assume that fields X and Y are both independently indexed as 2 separate tags:

Select X,Y from Tbl where X=1 and Y=2 && Full Optimization?

Select X,Y from Tbl where X=1 && Partial Optimization, even though both X and Y are indexed, because Y is not used here as part of the search criteria?
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform