diff options
| author | Marc G. Fournier <scrappy@hub.org> | 1997-04-09 08:31:29 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1997-04-09 08:31:29 +0000 |
| commit | 1c688d1bbe9e48234a6b2a6a6558ac441e26997e (patch) | |
| tree | aa8760eb993baaad71b92ab1e0b9c8041bfc4cb2 /src | |
| parent | aaeef4dae843fc9ecab7e6989e3015fda7cbc826 (diff) | |
| download | postgresql-1c688d1bbe9e48234a6b2a6a6558ac441e26997e.tar.gz postgresql-1c688d1bbe9e48234a6b2a6a6558ac441e26997e.zip | |
From: "Martin S. Utesch" <utesch@aut.tu-freiberg.de>
Subject: Re: [HACKERS] GEQO and views (rules)
Oke, this was caused by a classic bug :-/
I thougth, root->base_relation_list_ could be
represented as relid string 1-2-3-4- etc.
Instead, in case of views, the count of relids doesn't start with "1" but
maybe 4-5-6- etc . :-(
GEQO patch follows ... views are now all right.
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/optimizer/geqo/geqo_eval.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/src/backend/optimizer/geqo/geqo_eval.c b/src/backend/optimizer/geqo/geqo_eval.c index cec12ae0ea5..d1265f74344 100644 --- a/src/backend/optimizer/geqo/geqo_eval.c +++ b/src/backend/optimizer/geqo/geqo_eval.c @@ -5,7 +5,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: geqo_eval.c,v 1.7 1997/04/03 19:55:35 scrappy Exp $ + * $Id: geqo_eval.c,v 1.8 1997/04/09 08:31:29 scrappy Exp $ * *------------------------------------------------------------------------- */ @@ -63,6 +63,7 @@ static void geqo_joinrel_size(Rel *joinrel, Rel *outer_rel, Rel *inner_rel); static void geqo_add_new_joininfos(Query *root, List *joinrels, List *outerrels); static List *geqo_final_join_rels(List *join_rel_list); +static Rel *geqo_nth(int stop, List *rels); /* * geqo_eval-- @@ -108,7 +109,7 @@ Rel * gimme_tree (Query *root, Gene *tour, int rel_count, int num_gene, Rel *outer_rel) { Rel *inner_rel; /* current relation */ - int relid; + int base_rel_index; List *new_rels = NIL; Rel *new_rel = NULL; @@ -116,10 +117,11 @@ gimme_tree (Query *root, Gene *tour, int rel_count, int num_gene, Rel *outer_rel if (rel_count < num_gene ) { /* tree not yet finished */ /* tour[0] = 3; tour[1] = 1; tour[2] = 2 */ - relid = (int) tour[rel_count]; - inner_rel = (Rel *) get_base_rel(root, relid); + base_rel_index = (int) tour[rel_count]; - if (rel_count == 0) { /* processing first join with relid = (int) tour[0] */ + inner_rel = (Rel *) geqo_nth(base_rel_index,root->base_relation_list_); + + if (rel_count == 0) { /* processing first join with base_rel_index = (int) tour[0] */ rel_count++; return gimme_tree(root, tour, rel_count, num_gene, inner_rel); } @@ -669,3 +671,15 @@ geqo_log(double x, double b) { return(log(x)/log(b)); } + +static Rel * +geqo_nth(int stop, List *rels) +{ + List *r; + int i=1; + + foreach(r, rels) { + if (i == stop) return lfirst(r); + i++; + } +} |