Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Problem in Sql
Message
 
À
26/06/1997 02:07:39
Vinod Parwani
United Creations L.L.C.
Ad-Dulayl, Jordanie
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Divers
Thread ID:
00036374
Message ID:
00037853
Vues:
45
> > >>Thanks for your reply and sorry for delay in reply, actually the problem > is if the field is other then character field, what value I should return > to make it empty. > >> > >>Pls Advs > >> > >Vinod: > > > >You would have to return a value that is of the same type as the field > type in the generated select statement. If numeric, you could pass back 0 > or -1 (pick some default value). If the select field is logical, you would > have to return .t. or .f. Again, you would need to test the type of data > being passed to the function, and I would do this within the function. > Then return a corresponding result type. You could experiment returning > .null. if a value is "empty." You may be able to return .null. for empty > date, numeric, logical, etc., fields. > > > >HTH > > The problem is this only, If I return 0 for numeric and .f. for logical, > the fields which should be left blank are filled with these values. > > If I try to return null, its not accepting, as the cursor which select is > making is not supporting null values. > > Pls advs, I want to make those fields empty and not 0 or .f. One Pre-VFP way of doing this is to return an extra logical field indicating whether or not the field was empty. Now that we have VFP, we can return .NULL. /Paul
Paul Russell
EMail: prussell@fox.nstn.ca
Phone: (902) 499-5043
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform