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Be more realistic about plans involving Materialize nodes: take their

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cost into account while planning.
This commit is contained in:
Tom Lane
2002-11-30 05:21:03 +00:00
parent 829cedc8cf
commit 935969415a
19 changed files with 320 additions and 160 deletions
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4
src/include/optimizer/cost.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: cost.h,v 1.48 2002/11/21 00:42:19 tgl Exp $
* $Id: cost.h,v 1.49 2002/11/30 05:21:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -60,6 +60,8 @@ extern void cost_functionscan(Path *path, Query *root,
RelOptInfo *baserel);
extern void cost_sort(Path *path, Query *root,
List *pathkeys, Cost input_cost, double tuples, int width);
extern void cost_material(Path *path,
Cost input_cost, double tuples, int width);
extern void cost_agg(Path *path, Query *root,
AggStrategy aggstrategy, int numAggs,
int numGroupCols, double numGroups,

3
src/include/optimizer/pathnode.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pathnode.h,v 1.45 2002/11/06 00:00:45 tgl Exp $
* $Id: pathnode.h,v 1.46 2002/11/30 05:21:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -37,6 +37,7 @@ extern TidPath *create_tidscan_path(Query *root, RelOptInfo *rel,
extern AppendPath *create_append_path(RelOptInfo *rel, List *subpaths);
extern ResultPath *create_result_path(RelOptInfo *rel, Path *subpath,
List *constantqual);
extern MaterialPath *create_material_path(RelOptInfo *rel, Path *subpath);
extern Path *create_subqueryscan_path(RelOptInfo *rel);
extern Path *create_functionscan_path(Query *root, RelOptInfo *rel);