From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: psql \d option list overloaded |
Date: | 2004-03-31 01:06:25 |
Message-ID: | 200403310106.i2V16Pr15273@candle.pha.pa.us |
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Lists: | pgsql-advocacy pgsql-general pgsql-hackers |
I have added this psql backslash discussion to TODO.detail.
---------------------------------------------------------------------------
Peter Eisentraut wrote:
> Tom Lane wrote:
> > But this interacts with point 3 (psql breaks on every new backend
> > version). It's not desirable to have every GUI and large custom
> > program implementing its own set of metadata inquiry commands: they
> > all have to go through the same update pain as psql. Perhaps if
> > people start to rely on information_schema for those things, life
> > will get better, but I'm unconvinced that will happen. psql itself
> > certainly hasn't moved in that direction.
>
> IIRC, the two killers in psql compatibility have been outer joins and
> schemas. I don't see how we could have avoided that, except with
> highly specialized and static (parameter-less) commands. There have
> been additional minor issues, but I suppose we could have avoided those
> if we had cared to do so at all.
>
> Several people have in the past proposed to keep psql backward
> compatible, even if only by means of
>
> if (version =x) {
> ...
> }
> else if (version = y) {
> ...
> }
>
> (which would be fine by me), but apparently no one has felt pressed
> enough yet.
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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