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> > Prevent sorting if result is already sorted

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> >
> > was implemented by Jan Wieck.
> > His work is for ascending order cases.
> >
> > Here is a patch to prevent sorting also in descending
> > order cases.
> > Because I had already changed _bt_first() to position
> > backward correctly before v6.5,this patch would work.
> >
Hiroshi Inoue
Inoue@tpf.co.jp
This commit is contained in:
Bruce Momjian
1999-08-09 06:20:27 +00:00
parent 5efe31214a
commit 158fd5f1c4
9 changed files with 78 additions and 28 deletions
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3
src/backend/nodes/outfuncs.c
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@ -5,7 +5,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: outfuncs.c,v 1.91 1999/07/24 23:21:07 tgl Exp $
* $Id: outfuncs.c,v 1.92 1999/08/09 06:20:24 momjian Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
@ -445,6 +445,7 @@ _outIndexScan(StringInfo str, IndexScan *node)
appendStringInfo(str, " :indxqualorig ");
_outNode(str, node->indxqualorig);
appendStringInfo(str, " :indxorderdir %d ", node->indxorderdir);
}
/*