Re: How to cast VARCHAR to BYTEA and vice-versa?

From: Lance Peterson <heart8reaker(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: How to cast VARCHAR to BYTEA and vice-versa?
Date: 2005-03-14 17:31:20
Message-ID: ec98d12d0503140931386fcdf4@mail.gmail.com
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Christoph, is that recent functionality? I'm running 7.4 and I get:
ERROR: cannot cast type text to bytea

I get similar errors when trying to go the other direction.

On Mon, 14 Mar 2005 11:32:26 +0100, Christoph Haller <ch(at)rodos(dot)fzk(dot)de> wrote:
> "Moran.Michael" wrote:
> >
> > Hello all,
> >
> > I have a table with a VARCHAR column that I need to convert to a BYTEA.
> >
> > How do I cast VARCHAR to BYTEA?
> >
> > The following doesn't seem to work as it yields the 'cannot cast varchar to
> > bytea' error message:
> >
> > varchar_data::bytea
> >
> > On the same topic, how do I do the reverse, that is, how to I cast from
> > BYTEA back to VARCHAR?
> >
> > Thanks,
> > -Michael Moran
> >
> >
> As far as I remember
> varchar_data::TEXT::BYTEA
> works. Vice versa dto.
> Be aware BYTEA data may contain character codes
> unconvertable to VARCHAR, especially '\0'.
>
> Regards, Christoph
>
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