Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Converting to old formats
Message
De
20/10/2009 19:48:07
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie
 
 
À
20/10/2009 19:35:52
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
01430271
Message ID:
01430276
Vues:
36
>Why is it that all varchar fields become memo fields when issuing a COPY TO ... TYPE FOXPLUS command? and is there a way to avoid it?

Even older versions of Visual FoxPro don't have a "Varchar" type. What would you convert it to, without losing data? The only type that supports a variable length is a Memo or Memo(Binary).

If you are sure that the varchar has no more than a certain number of characters (up to 254), you can convert the field to Character type, and then do the COPY TO.

Update: I hadn't worked with Varchar before; I now see that like character, it has a limit of 254 characters. Pressumably, Visual FoxPro uses this default conversion for compatibility: the idea of varchar is that the expression is NOT filled out with blanks, up to the maximum field length. Memo has this property, too.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform