Re: bytea and text

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От richard terry
Тема Re: bytea and text
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Msg-id 200911281050.44256.rterry@pacific.net.au
обсуждение исходный текст
Ответ на Re: bytea and text  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: bytea and text  ("Jean-Yves F. Barbier" <12ukwn@gmail.com>)
Re: bytea and text  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-novice
On Friday 27 November 2009 02:58:01 Tom Lane wrote:
> "Jean-Yves F. Barbier" <12ukwn@gmail.com> writes:
> > I'm asking myself what solution for storing pictures is the best:
> >
> > * using a BYTEA column type, and having no intrinsic compression gain
> >    because a picture it almost every time already compressed,
> >
> > * using a TEXT column type, and store a Base64(picture) in it; it should
> >    take benefits of intrinsic compression (?).
>
> At best, the compression would get rid of the overhead you added by
> converting to base64.  It probably wouldn't completely succeed at that,
> though, meaning the second alternative is always a loser.
>
>             regards, tom lane
>

tom, I wonder if you could give us a sample of using client side lo_creat ,
insert  functions to insert a blob into postgres - in an sql statement.

Despite reading the docs's I'm totally in the dark and can't understand the
syntax.

Regards

richard (using gambas basic)

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