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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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7
src/backend/nodes/readfuncs.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.70 1999/07/24 23:21:08 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.71 1999/08/09 06:20:24 momjian Exp $
*
* NOTES
* Most of the read functions for plan nodes are tested. (In fact, they
@ -532,6 +532,11 @@ _readIndexScan()
token = lsptok(NULL, &length); /* eat :indxqualorig */
local_node->indxqualorig = nodeRead(true); /* now read it */
token = lsptok(NULL, &length); /* eat :indxorderdir */
token = lsptok(NULL, &length); /* get indxorderdir */
local_node->indxorderdir = atoi(token);
return local_node;
}