Re: Large objects in one table patch

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Denis Perchine <dyp(at)perchine(dot)com>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Large objects in one table patch
Date: 2000-10-11 00:51:54
Message-ID: 200010110051.UAA18466@candle.pha.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-patches

Now that we have TOAST, I wonder if we should just build large objects
on top of that, rather than have all large objects in one file.

> Hello all,
>
> As promised.
> Here is the patch for large objects in one table.
> There's new system table pg_largeobject.
> create table pg_largeobject (
> loid Oid,
> pageno int4,
> data bytea
> );
>
> It has 2 indices: on (loid) and on (loid,pageno). (Is it neccessary to have
> both? Can I search on the second one for loid only?)
>
> BLOB is divided by virtual pages, which is maximum tuple size - some internal data.
> Access to the data is based on pageno, which is similar block number on FS.
>
> I am not sure that it is optimized and have no memory/resource leaks. Could
> please someone better familiar with postgres review the patch.
>
> It perfectly works with my database.
>
> Patch is against the latest CVS.
>
> --
> Sincerely Yours,
> Denis Perchine
>
> ----------------------------------
> E-Mail: dyp(at)perchine(dot)com
> HomePage: http://www.perchine.com/dyp/
> FidoNet: 2:5000/120.5
> ----------------------------------

[ Attachment, skipping... ]

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

In response to

Responses

Browse pgsql-patches by date

  From Date Subject
Next Message Bruce Momjian 2000-10-11 01:21:14 Re: [PATCHES] PostgreSQL virtual hosting support
Previous Message Tom Lane 2000-10-10 22:24:01 Re: [PATCHES] CLASSOID patch