Re: [COMMITTERS] pgsql: Change FETCH/MOVE to use int8. - Mailing list pgsql-patches

From Bruce Momjian
Subject Re: [COMMITTERS] pgsql: Change FETCH/MOVE to use int8.
Date
Msg-id 200609030116.k831GLj11514@momjian.us
Whole thread Raw
Responses Re: [COMMITTERS] pgsql: Change FETCH/MOVE to use int8.  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-patches
Tom Lane wrote:
> momjian@postgresql.org (Bruce Momjian) writes:
> > Log Message:
> > -----------
> > Change FETCH/MOVE to use int8.
>
> This patch has broken half the buildfarm, and I've still not seen a
> rationale why we need to make such a change at all.

Fixed with attached patch.  The use case for this was not FETCH, but
MOVE for > 2gig tables.

--
  Bruce Momjian   bruce@momjian.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +
Index: src/backend/tcop/pquery.c
===================================================================
RCS file: /cvsroot/pgsql/src/backend/tcop/pquery.c,v
retrieving revision 1.108
diff -c -c -r1.108 pquery.c
*** src/backend/tcop/pquery.c    2 Sep 2006 18:17:17 -0000    1.108
--- src/backend/tcop/pquery.c    3 Sep 2006 01:13:20 -0000
***************
*** 1347,1353 ****
                   * we are.    In any case, we arrange to fetch the target row
                   * going forwards.
                   */
!                 if (portal->posOverflow || portal->portalPos == LLONG_MAX ||
                      count - 1 <= portal->portalPos / 2)
                  {
                      DoPortalRewind(portal);
--- 1347,1353 ----
                   * we are.    In any case, we arrange to fetch the target row
                   * going forwards.
                   */
!                 if (portal->posOverflow || portal->portalPos == FETCH_ALL ||
                      count - 1 <= portal->portalPos / 2)
                  {
                      DoPortalRewind(portal);
Index: src/include/nodes/parsenodes.h
===================================================================
RCS file: /cvsroot/pgsql/src/include/nodes/parsenodes.h,v
retrieving revision 1.327
diff -c -c -r1.327 parsenodes.h
*** src/include/nodes/parsenodes.h    2 Sep 2006 18:17:17 -0000    1.327
--- src/include/nodes/parsenodes.h    3 Sep 2006 01:13:22 -0000
***************
*** 14,19 ****
--- 14,21 ----
  #ifndef PARSENODES_H
  #define PARSENODES_H

+ #include "limits.h"
+
  #include "nodes/primnodes.h"
  #include "nodes/value.h"

***************
*** 1439,1445 ****
--- 1441,1452 ----
      FETCH_RELATIVE
  } FetchDirection;

+ #ifdef HAVE_INT64
  #define FETCH_ALL    LLONG_MAX
+ #else
+ #define FETCH_ALL    LONG_MAX
+ #endif
+

  typedef struct FetchStmt
  {

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