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Cleanup optimizer function names and clarify code.

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This commit is contained in:
Bruce Momjian
1998-08-10 02:26:40 +00:00
parent addddea313
commit 2d32d909b5
17 changed files with 130 additions and 112 deletions
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15
src/backend/optimizer/path/allpaths.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.19 1998/08/07 05:02:15 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.20 1998/08/10 02:26:20 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -45,7 +45,9 @@ int32 _use_geqo_rels_ = GEQO_RELS;
static void find_rel_paths(Query *root, List *rels);
static List *find_join_paths(Query *root, List *outer_rels, int levels_needed);
#ifdef OPTIMIZER_DEBUG
static void debug_print_rel(Query *root, RelOptInfo *rel);
#endif
/*
* find-paths--
@ -74,7 +76,6 @@ find_paths(Query *root, List *rels)
if (levels_needed <= 1)
{
/*
* Unsorted single relation, no more processing is required.
*/
@ -82,7 +83,6 @@ find_paths(Query *root, List *rels)
}
else
{
/*
* this means that joins or sorts are required. set selectivities
* of clauses that have not been set by an index.
@ -115,8 +115,7 @@ find_rel_paths(Query *root, List *rels)
List *or_index_scan_list;
RelOptInfo *rel = (RelOptInfo *) lfirst(temp);
sequential_scan_list = lcons(create_seqscan_path(rel),
NIL);
sequential_scan_list = lcons(create_seqscan_path(rel), NIL);
rel_index_scan_list =
find_index_paths(root,
@ -181,7 +180,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
* <utesch@aut.tu-freiberg.de> *
*******************************************/
if ((_use_geqo_) && length(root->base_relation_list_) >= _use_geqo_rels_)
if ((_use_geqo_) && length(root->base_rel_list) >= _use_geqo_rels_)
return lcons(geqo(root), NIL); /* returns *one* RelOptInfo, so lcons it */
/*******************************************
@ -255,10 +254,10 @@ find_join_paths(Query *root, List *outer_rels, int levels_needed)
* merge join rels if then contain the same list of base rels
*/
outer_rels = merge_joinrels(new_rels, outer_rels);
root->join_relation_list_ = outer_rels;
root->join_rel_list = outer_rels;
}
else
root->join_relation_list_ = new_rels;
root->join_rel_list = new_rels;
if (!BushyPlanFlag)
outer_rels = new_rels;
}