Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Select RECNO() puzzler
Message
De
19/08/1998 09:43:04
 
 
À
14/08/1998 16:36:49
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00126709
Message ID:
00128093
Vues:
23
From the "SELECT - SQL" help:

Important Keep the following information in mind when creating join conditions:

If you include two tables in a query and don’t specify a join condition, every record in the first table is joined with every record in the second table as long as the filter conditions are met. Such a query can produce lengthy results.

Be careful when using, in join conditions, functions such as DELETED( ), EOF( ), FOUND( ), RECCOUNT( ), and RECNO( ), which support an optional alias or work area. Including an alias or work area in these functions might yield unexpected results. SELECT doesn’t use your work areas; it performs the equivalent of USE ... AGAIN. Single-table queries that use these functions without an optional alias or work area will return proper results. However, multiple-table queries that use these functions — even without an optional alias or work area — might return unexpected results.


Fred,

Thank you for taking the time to look that up. After you pointed it out, I found in VFP 50a help just as you indicated. Missed it the first time.

Regards,
Jim Edgar
Jurix Data Corporation
jmedgar@yahoo.com

No trees were destroyed in sending this message. However, a large number of electrons were diverted from their ordinary activities and terribly inconvenienced.
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform