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Another round of planner/optimizer work. This is just restructuring and

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code cleanup; no major improvements yet.  However, EXPLAIN does produce
more intuitive outputs for nested loops with indexscans now...
This commit is contained in:
Tom Lane
2000-01-09 00:26:47 +00:00
parent 69d4299e3e
commit 166b5c1def
35 changed files with 1239 additions and 1448 deletions
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27
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 1.22 1999/11/23 20:07:06 momjian Exp $
* $Id: pathnode.h,v 1.23 2000/01/09 00:26:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -21,26 +21,27 @@
extern bool path_is_cheaper(Path *path1, Path *path2);
extern Path *set_cheapest(RelOptInfo *parent_rel, List *pathlist);
extern List *add_pathlist(RelOptInfo *parent_rel, List *old_paths,
List *new_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);
IndexOptInfo *index,
List *restriction_clauses);
extern TidPath *create_tidscan_path(RelOptInfo *rel, List *tideval);
extern NestPath *create_nestloop_path(RelOptInfo *joinrel,
RelOptInfo *outer_rel, Path *outer_path, Path *inner_path,
List *pathkeys);
Path *outer_path, Path *inner_path,
List *pathkeys);
extern MergePath *create_mergejoin_path(RelOptInfo *joinrel, int outersize,
int innersize, int outerwidth, int innerwidth, Path *outer_path,
Path *inner_path, List *pathkeys,
List *mergeclauses, List *outersortkeys, List *innersortkeys);
extern MergePath *create_mergejoin_path(RelOptInfo *joinrel, Path *outer_path,
Path *inner_path, List *pathkeys,
List *mergeclauses,
List *outersortkeys,
List *innersortkeys);
extern HashPath *create_hashjoin_path(RelOptInfo *joinrel, int outersize,
int innersize, int outerwidth, int innerwidth, Path *outer_path,
Path *inner_path, List *hashclauses, Cost innerdisbursion);
extern HashPath *create_hashjoin_path(RelOptInfo *joinrel, Path *outer_path,
Path *inner_path, List *hashclauses,
Selectivity innerdisbursion);
/*
* prototypes for rel.c