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Code Issues Releases Wiki Activity

Fix for AND/OR handling.

This commit is contained in:
Bruce Momjian 1998-09-21 15:41:28 +00:00
parent 06b8c8a8b8
commit 748e300317
3 changed files with 26 additions and 15 deletions
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7
src/backend/optimizer/path/indxpath.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.34 1998/09/01 04:29:33 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.35 1998/09/21 15:41:26 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -1293,8 +1293,13 @@ index_innerjoin(Query *root, RelOptInfo * rel, List *clausegroup_list,
length(clausegroup),
&temp_pages,
&temp_selec);
pathnode->path.pathtype = T_IndexScan;
pathnode->path.parent = rel;
pathnode->path.p_ordering.ordtype = SORTOP_ORDER;
pathnode->path.p_ordering.ord.sortop = index->ordering;
pathnode->path.keys = NIL; /* not sure about this, bjm 1998/09/21 */
pathnode->indexid = index->relids;
pathnode->indexkeys = index->indexkeys;
pathnode->indexqual = clausegroup;

11
src/backend/optimizer/path/orindxpath.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/orindxpath.c,v 1.11 1998/09/01 04:29:41 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/orindxpath.c,v 1.12 1998/09/21 15:41:27 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -104,6 +104,15 @@ create_or_index_paths(Query *root,
pathnode->path.pathtype = T_IndexScan;
pathnode->path.parent = rel;
pathnode->path.p_ordering.ordtype = SORTOP_ORDER;
/*
* This is an IndexScan, but it does index lookups based
* on the order of the fields specified in the WHERE clause,
* not in any order, so the sortop is NULL.
*/
pathnode->path.p_ordering.ord.sortop = NULL;
pathnode->path.keys = NIL; /* not sure about this, bjm 1998/09/21 */
pathnode->indexqual = lcons(clausenode, NIL);
pathnode->indexid = indexids;
pathnode->path.path_cost = cost;

23
src/backend/optimizer/util/pathnode.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.12 1998/09/01 04:30:08 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.13 1998/09/21 15:41:28 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -355,20 +355,17 @@ create_index_path(Query *root,
&npages,
&selec);
/* each clause gets an equal selectivity */
clausesel =
pow(selec,
1.0 / (double) length(restriction_clauses));
clausesel = pow(selec, 1.0 / (double) length(restriction_clauses));
pathnode->indexqual = restriction_clauses;
pathnode->path.path_cost =
cost_index(lfirsti(index->relids),
(int) npages,
selec,
rel->pages,
rel->tuples,
index->pages,
index->tuples,
false);
pathnode->path.path_cost = cost_index(lfirsti(index->relids),
(int) npages,
selec,
rel->pages,
rel->tuples,
index->pages,
index->tuples,
false);
#if 0
/* add in expensive functions cost! -- JMH, 7/7/92 */