Date: Sat, 16 Jul 2005 23:54:09 +0200
From: Michael Meskes <meskes@postgresql.org>
To: Dirk Jagdmann <doj@cubic.org>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: ecpg and VARCHAR
Message-ID: <20050716215409.GA13517@1>
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	pgsql-interfaces@postgresql.org
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> I'd like to get some information on VARCHAR types with ecpg. If I 
> declare a VARCHAR without any size information I get a compilation error 
> from my gcc 3.4.4:
> ...
> Now I suppose this negative declaration should have initialized an empty 
> array and the generated sql code then allocates the space as needed?

This is definitely a bug. The negative value is used internaly but
should not make it into the generated code.

> If I declared the VARCHAR with a size everything works fine. However I'd 
> like to know if the characters in the array contain a trailing 0 or if I 
> have to set this explicitely?

No, they don't unless you set it to 0.

> And then I'd like to know which is the preferred way to retrieve "text" 
> columns which contain arbitrary length texts with ecpg?

Just use "char *ptr=NULL;" libecpg will then allocate the needed memory
for you. You just have to free it later.

But then, this should also work with varchar. :-)

Michael
-- 
Michael Meskes
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