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Further work on planning of indexscans. Cleaned up interfaces

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to index_selectivity so that it can be handed an indexqual clause list
rather than a bunch of assorted derivative data.
This commit is contained in:
Tom Lane
1999-07-25 23:07:26 +00:00
parent 8ae29a1d40
commit 49ed4dd779
11 changed files with 319 additions and 497 deletions
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39
src/backend/optimizer/path/indxpath.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.64 1999/07/25 17:53:27 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.65 1999/07/25 23:07:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1216,25 +1216,20 @@ index_innerjoin(Query *root, RelOptInfo *rel, RelOptInfo *index,
{
List *clausegroup = lfirst(i);
IndexPath *pathnode = makeNode(IndexPath);
Cost temp_selec;
float temp_pages;
List *attnos,
*values,
*flags;
List *indexquals;
float npages;
float selec;
get_joinvars(lfirsti(rel->relids), clausegroup,
&attnos, &values, &flags);
index_selectivity(lfirsti(index->relids),
index->classlist,
get_opnos(clausegroup),
getrelid(lfirsti(rel->relids),
root->rtable),
attnos,
values,
flags,
length(clausegroup),
&temp_pages,
&temp_selec);
indexquals = get_actual_clauses(clausegroup);
index_selectivity(root,
lfirsti(rel->relids),
lfirsti(index->relids),
indexquals,
&npages,
&selec);
/* XXX this code ought to be merged with create_index_path */
pathnode->path.pathtype = T_IndexScan;
pathnode->path.parent = rel;
@ -1249,14 +1244,14 @@ index_innerjoin(Query *root, RelOptInfo *rel, RelOptInfo *index,
*/
pathnode->indexid = index->relids;
pathnode->indexkeys = index->indexkeys;
pathnode->indexqual = lcons(get_actual_clauses(clausegroup), NIL);
pathnode->indexqual = lcons(indexquals, NIL);
/* joinid saves the rels needed on the outer side of the join */
pathnode->path.joinid = lfirst(outerrelids_list);
pathnode->path.path_cost = cost_index((Oid) lfirsti(index->relids),
(int) temp_pages,
temp_selec,
(int) npages,
selec,
rel->pages,
rel->tuples,
index->pages,