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Further cleanups of indexqual processing: simplify control

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logic in indxpath.c, avoid generation of redundant indexscan paths for the
same relation and index.
This commit is contained in:
Tom Lane
1999-07-30 04:07:25 +00:00
parent 037cac7ca6
commit 04578a9180
3 changed files with 122 additions and 154 deletions
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4
src/include/optimizer/pathnode.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: pathnode.h,v 1.18 1999/07/15 15:21:22 momjian Exp $
* $Id: pathnode.h,v 1.19 1999/07/30 04:07:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -24,7 +24,7 @@ extern List *add_pathlist(RelOptInfo *parent_rel, List *unique_paths,
List *new_paths);
extern Path *create_seqscan_path(RelOptInfo *rel);
extern IndexPath *create_index_path(Query *root, RelOptInfo *rel, RelOptInfo *index,
List *restriction_clauses, bool is_join_scan);
List *restriction_clauses);
extern NestPath *create_nestloop_path(RelOptInfo *joinrel, RelOptInfo *outer_rel,
Path *outer_path, Path *inner_path, List *pathkeys);
extern MergePath *create_mergejoin_path(RelOptInfo *joinrel, int outersize,