Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
What to use instead of _tally for SUM() SQL Select?
Message
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9
Divers
Thread ID:
01072776
Message ID:
01072797
Vues:
18
>
>No, _TALLY holds the # of records returned by SQL Select not the # of found records.
>A query with agregate function and w/o GRPUP BY returns one record IN VFP9 regardless if there were any matching records. It's ANSI SQL behavior. You have to use ISNULL() function to see if any matching records have been found.

Thank you for the explanation.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform