Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Is this a bug in Seek()?
Message
 
À
26/03/2004 11:09:42
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00889986
Message ID:
00890050
Vues:
20
Hi

So I assume it is doing the equivalent of a Val() on the search string is that correct? If so then I guess it is working correctly because using Val() on any of my search strings would product Zero which is in the index for the second example.

This only happened because the file was indexed incorrectly. It should have been indexed on Str(Number,5). I never knew that VFP allowed you to search a numeric index for a character string. When I first discovered it I expected it to give me an error message.

Thanks
Simon


>>Hi
>>
>>I had a strange problem with a program an discovered that the index had been created on a numeric value while the seek() was searching for a character expression. I got the following strange results when Zero was one of the values in the table. Is this a bug in the Seek() function?
>>
>>I am using VFP 7.0 SP1 and WinXP Pro SP1. I get the same results in VFP 8.0 SP1.
>>
>>
>>
>>Create Table UPTest (Number N(5,0))
>>Select UPTest
>>Index On Number Tag Number
>>Insert Into UPTest (Number) VALUES (1)
>>Insert Into UPTest (Number) VALUES (2)
>>Insert Into UPTest (Number) VALUES (3)
>>
>>? Seek("Mary","UPTest","Number")    && .F. as expected
>>
>>? Seek("mary","UPTest","Number")    && .F. as expected
>>
>>? Seek("0Mary","UPTest","Number")    && .F. as expected
>>
>>Insert Into UPTest (Number) VALUES (0)
>>
>>? Seek("Mary","UPTest","Number")    && .T.  ???
>>
>>? Seek("mary","UPTest","Number")    && .T.  ???
>>
>>? Seek("0Mary","UPTest","Number")    && .T.  ???
>>
>>
>>Clear All
>>Delete File UPTest.dbf
>>Delete File UPTest.cdx
>>
>
>Simon,
>To me it's a bug on development side. It evalueates the string and seeks for a match. If string say has started with 2 then any letter then it'd locate the second whether 0 inserted or not.
>Cetin
Simon White
dCipher Computing
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform