Re: [HACKERS] Allow pg_dump to dump sequences using NO_MAXVALUE

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Rod Taylor <rbt(at)rbt(dot)ca>
Cc: PostgreSQL Patches <pgsql-patches(at)postgresql(dot)org>, Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>, Peter Eisentraut <peter_e(at)gmx(dot)net>
Subject: Re: [HACKERS] Allow pg_dump to dump sequences using NO_MAXVALUE
Date: 2003-03-17 17:47:03
Message-ID: 200303171747.h2HHl3f00352@candle.pha.pa.us
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Your patch has been added to the PostgreSQL unapplied patches list at:

http://momjian.postgresql.org/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

---------------------------------------------------------------------------

Rod Taylor wrote:
-- Start of PGP signed section.
> On Sun, 2003-02-23 at 09:05, Gavin Sherry wrote:
> > On 23 Feb 2003, Rod Taylor wrote:
> >
> > > - Move SEQ_MAXVALUE, SEQ_MINVALUE definitions to sequence.h
> > >
> > > - Add check in pg_dump to see if the value returned is the max /min
> > > values and replace with NO MAXVALUE, NO MINVALUE.
> > >
> > > - Change START and INCREMENT to use START WITH and INCREMENT BY syntax.
> > > This makes it a touch easier to port to other databases with sequences
> > > (Oracle). PostgreSQL supports both syntaxes already.
> >
> > + char bufm[100],
> > + bufx[100];
> >
> > This seems to be an arbitary size. Why not set it to the actual maximum
> > length?
> >
> > Also:
> >
> > + snprintf(bufm, 100, INT64_FORMAT, SEQ_MINVALUE);
> > + snprintf(bufx, 100, INT64_FORMAT, SEQ_MAXVALUE);
> >
> > sizeof(bufm), sizeof(bufx) is probably the more
> > maintenance-friendly/standard way to do it.
>
> I changed the code to use sizeof - but will wait for a response from
> Peter before changing the size. It's consistent throughout the sequence
> code to be 100 for this purpose.
>
> http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/commands/sequence.c.diff?r1=1.85&r2=1.86
>
> --
> Rod Taylor <rbt(at)rbt(dot)ca>
>
> PGP Key: http://www.rbt.ca/rbtpub.asc

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Bruce Momjian | http://candle.pha.pa.us
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