Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Confirming nulls in views
Message
De
03/12/2019 16:24:55
 
 
À
Tous
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Confirming nulls in views
Divers
Thread ID:
01672134
Message ID:
01672134
Vues:
60
Hi all,

Just want to confirm this as the help notes are a bit sketchy - if I open up a local view and append a row and then add in some data, any queries using OLDVAL() on any of the fields returns .null. even though none of the fields allow null values in the table.

I assumed that an OLDVAL() on a character field would return a blank character string.

Not a big deal as for most all of my checks, I am only interested in comparing the changes anyhow. But it has caught me on one check where the comparison was being skipped because one side of the comparison was returning null.

Any way around this or do I have to always check for nulls on an appended record?

Albert
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform