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

From: Rod Taylor <rbt(at)rbt(dot)ca>
To: PostgreSQL Patches <pgsql-patches(at)postgresql(dot)org>
Cc: 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: 2003-02-23 14:58:41
Message-ID: 1046012320.84130.154.camel@jester
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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

Attachment Content-Type Size
dbseqdump.patch text/x-patch 9.4 KB

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