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Rename same() to sameseti() to have a slightly less generic name. Move

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nonoverlap_sets() and is_subset() to list.c, where they should have lived
to begin with, and rename to nonoverlap_setsi and is_subseti since they
only work on integer lists.
This commit is contained in:
Tom Lane
2000-02-06 03:27:35 +00:00
parent 418b270020
commit 81fc1d5edb
8 changed files with 76 additions and 81 deletions
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4
src/backend/optimizer/path/joinpath.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.49 2000/01/26 05:56:34 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.50 2000/02/06 03:27:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -181,7 +181,7 @@ best_innerjoin(List *join_paths, Relids outer_relids)
* outer_relids in order to use this inner path, because those
* rels are used in the index join quals of this inner path.
*/
if (is_subset(((IndexPath *) path)->joinrelids, outer_relids) &&
if (is_subseti(((IndexPath *) path)->joinrelids, outer_relids) &&
(cheapest == NULL ||
path_is_cheaper(path, cheapest)))
cheapest = path;

44
src/backend/optimizer/path/joinrels.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinrels.c,v 1.41 2000/01/26 05:56:34 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinrels.c,v 1.42 2000/02/06 03:27:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -144,8 +144,8 @@ make_rels_by_clause_joins(Query *root, RelOptInfo *old_rel,
RelOptInfo *join_rel = lfirst(r);
Assert(length(join_rel->relids) > 1);
if (is_subset(unjoined_relids, join_rel->relids) &&
nonoverlap_sets(old_rel->relids, join_rel->relids))
if (is_subseti(unjoined_relids, join_rel->relids) &&
nonoverlap_setsi(old_rel->relids, join_rel->relids))
{
joined_rel = make_join_rel(old_rel, join_rel);
join_list = lappend(join_list, joined_rel);
@@ -175,7 +175,7 @@ make_rels_by_clauseless_joins(RelOptInfo *old_rel, List *inner_rels)
{
RelOptInfo *inner_rel = (RelOptInfo *) lfirst(i);
if (nonoverlap_sets(inner_rel->relids, old_rel->relids))
if (nonoverlap_setsi(inner_rel->relids, old_rel->relids))
{
join_list = lappend(join_list,
make_join_rel(old_rel, inner_rel));
@@ -404,39 +404,3 @@ get_cheapest_complete_rel(List *join_rel_list)
return final_rel;
}
/*
* Subset-inclusion tests on integer lists.
*
* XXX these probably ought to be in nodes/list.c or some such place.
*/
bool
nonoverlap_sets(List *s1, List *s2)
{
List *x;
foreach(x, s1)
{
int e = lfirsti(x);
if (intMember(e, s2))
return false;
}
return true;
}
bool
is_subset(List *s1, List *s2)
{
List *x;
foreach(x, s1)
{
int e = lfirsti(x);
if (!intMember(e, s2))
return false;
}
return true;
}

4
src/backend/optimizer/path/prune.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/prune.c,v 1.45 2000/01/26 05:56:34 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/prune.c,v 1.46 2000/02/06 03:27:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -67,7 +67,7 @@ merge_rel_with_same_relids(RelOptInfo *rel, List *unmerged_rels)
{
RelOptInfo *unmerged_rel = (RelOptInfo *) lfirst(i);
if (same(rel->relids, unmerged_rel->relids))
if (sameseti(rel->relids, unmerged_rel->relids))
{
/*
* These rels are for the same set of base relations,