Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
How to tell if a table has no nondeleted records (empty)
Message
De
04/09/1998 08:57:43
 
 
À
03/09/1998 20:40:00
Larry Long
ProgRes (Programming Resources)
Georgie, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00132456
Message ID:
00133198
Vues:
26
>>>>>how is an efficient way to tell if a table has no active records.
>>>>>
>>>>>thanks, brenda
>>>>
>>>>SET DELETED ON
>>>>COUNT TO nTotal
>>>>IF nTotal=0
>>>>...
>>>You should have and index tag on DELETED(), example...
>>>INDEX ON DELETED() TAG ISDELETED
>>>Having this will greatly increase performance if you have SET DELETED ON in your app.
>>>
>>>Assuming you have done this, you could...
>>>
>>>found_deleted=SEEK(.T.,'yourtable','ISDELETED')
>>>
>>>or conversely...
>>>found_active=SEEK(.F.,'yourtable','ISDELETED')
>>>
>>>//:^)
>>
>>Larry, do you really assume that I don't use/know about DELETED() tag?
>I know that you would, but you didnt post the original message.
>//:^)

Why should I post original message? And BTW everything is still here, nothing was cut off.
Edward Pikman
Independent Consultant
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform