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Another round of planner/optimizer work. This is just restructuring and

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code cleanup; no major improvements yet.  However, EXPLAIN does produce
more intuitive outputs for nested loops with indexscans now...
This commit is contained in:
Tom Lane
2000-01-09 00:26:47 +00:00
parent 69d4299e3e
commit 166b5c1def
35 changed files with 1239 additions and 1448 deletions
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10
src/backend/optimizer/geqo/geqo_eval.c
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@@ -5,7 +5,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: geqo_eval.c,v 1.44 1999/09/21 20:58:08 momjian Exp $
* $Id: geqo_eval.c,v 1.45 2000/01/09 00:26:27 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -95,7 +95,7 @@ geqo_eval(Query *root, Gene *tour, int num_gene)
joinrel = gimme_tree(root, tour, 0, num_gene, NULL);
/* compute fitness */
fitness = (Cost) joinrel->cheapestpath->path_cost;
fitness = joinrel->cheapestpath->path_cost;
/* restore join_rel_list */
root->join_rel_list = savelist;
@@ -177,16 +177,14 @@ gimme_tree(Query *root, Gene *tour, int rel_count, int num_gene, RelOptInfo *old
elog(DEBUG, "gimme_tree: still %d relations left", length(new_rels));
}
rels_set_cheapest(new_rels);
rels_set_cheapest(root, new_rels);
/* get essential new relation */
new_rel = (RelOptInfo *) lfirst(new_rels);
rel_count++;
/* processing of other new_rel attributes */
if (new_rel->size <= 0)
new_rel->size = compute_rel_size(new_rel);
new_rel->width = compute_rel_width(new_rel);
set_rel_rows_width(root, new_rel);
root->join_rel_list = lcons(new_rel, NIL);