Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
SCAN ... ENDSCAN
Message
 
 
À
26/09/2001 11:14:52
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00560821
Message ID:
00561006
Vues:
38
>>If there's index order set on the table foxpro has to use that index in SCAN to find next record regardless if there is or not WHILE !EOF(). The only difference WHILE !EOF() clause makes that SCAN starts processing from the current record in table not from the top.
>
>Sergey,
>
>Yep, I agree with you. And I even ran a test (thinking maybe I have been wrong for 10 years about how SCAN/ENDSCAN works), that proved it correct. Yes, it ran a bit slower with an index set (as one would expect it to). But there was no change at all whether WHILE !EOF() was used or not on the indexed scan. I even tried DO WHILE !EOF() (which I never use, but wanted to test anyway).
>
>So, I guess there's no truth to *that* rumor, Nadya. < g >
>
>~~Bonnie

Ok, one more post and I'll test it by myself :)
If it's not broken, fix it until it is.


My Blog
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform