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Article View: borland.public.cppbuilder.database.ado
Article #5438

Re: Zero-length strings

#5438
From: Lock Horsburgh
Date: Fri, 04 May 2001 09:50
45 lines
1891 bytes
"Curtis Reimer" <curtisr@lvcontrol.mb.ca> wrote in message
news:3af02729_2@dnews...
> Hello,
>
> When posting records to the database, I get the following error when we
try
> to put an empty string into a field.
>
> Field 'tblLocation.Description' cannot be a zero-length string
>
> The interesting portion of the code is essentially
>
> tblLocation->Edit();
> tblLocationDescription->AsString = description;
> tblLocation->Post();
>
> where
> - tblLocationDescription is a TWideStringField
> - description is an empty AnsiString
>
> Why can't a string be set to zero-length?  The field is not part of the
key,
> required, etc.  Does it have something to do with variants being used
within
> the code?
>
> Details you might like to know:
>
> OS : WinNT SP6a
> MDAC: V2.6
> C++ Builder V5 Professional, Update Pack 1
> ADO Express, including update
> DB: Access 2000
>
> Thank You,
>
> Curt
>
>
>

Is there a NOT NULL    constraint on that column?

Lock.
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From: "Lock Horsburgh" <lock@lhorsburgh.NO.RUBBISH.freeserve.co.uk>
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Subject: Re: Zero-length strings
Date: Fri, 4 May 2001 10:50:01 +0100
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