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RE: [GENERAL] Problem with SELECT on large negative INT4

From: Nicolas Huillard <nhuillard(at)ghs(dot)fr>
To: "pgsql-general(at)hub(dot)org" <pgsql-general(at)hub(dot)org>, "pgsql-sql(at)hub(dot)org" <pgsql-sql(at)hub(dot)org>
Subject: RE: [GENERAL] Problem with SELECT on large negative INT4
Date: 2000-01-27 17:52:07
Message-ID: 01BF68F7.9D1CE2B0@agen.int.ghs (view raw or flat)
Thread:
Lists: pgsql-generalpgsql-sql
I haven't got the opportunity to recompile Postgres right now, but will do that. Just reading the code, I can't figure out the exact difference, but who knows...
Did someone already applied this ?

Nicolas Huillard

-----Message d'origine-----
De:	Hiroshi Inoue [SMTP:Inoue(at)tpf(dot)co(dot)jp]
Date:	jeudi 27 janvier 2000 17:31
À:	Nicolas Huillard
Cc:	pgsql-general(at)hub(dot)org; pgsql-sql(at)hub(dot)org
Objet:	RE: [GENERAL] Problem with SELECT on large negative INT4

> -----Original Message-----
> From: owner-pgsql-general(at)postgresql(dot)org
> [mailto:owner-pgsql-general(at)postgresql(dot)org]On Behalf Of Nicolas Huillard
>
> I have a DB with is updated using MS Access. Primary keys are
> Int4 with default random values ("NuméroAuto" + "Aléatoire" in Access).
> The DB is migrated as-is in Postgres, with tbl_prod.cle_prod
> field containing values from -2057496808 to 2139583719.
> When I SELECT in the table, using the INT4 cle_prod value, PG
> doesn't find the tuple. When I SELECT using the VARCHAR(10)
> ref_prod value, PG finds the tuple, and show the right value for
> the cle_prod filed : the same as the one I SELECTed for...
>
> This sounds like the long negative integer values given in PSQL
> is not converted correctly while executing.
> Using a long positive integer value, all works like a charm...
>
> Below is the queries type sto sho what append.
> I'm using Postgres 6.5.2 from the RPMs.
>

Could you try the follwoing patch ?

Regards.

Hiroshi Inoue

*** nbtcompare.c        2000/01/11 03:33:34     1.3
--- nbtcompare.c        2000/01/19 05:42:06
***************
*** 34,40 ****
  int32
  btint4cmp(int32 a, int32 b)
  {
!       return a - b;
  }

  int32
--- 34,45 ----
  int32
  btint4cmp(int32 a, int32 b)
  {
!       if (a > b)
!               return 1;
!       else if (a == b)
!               return 0;
!       else
!               return -1;
  }

  int32



************


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