diff options
Diffstat (limited to 'src/include/optimizer/cost.h')
| -rw-r--r-- | src/include/optimizer/cost.h | 46 |
1 files changed, 20 insertions, 26 deletions
diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h index abde39b237c..c654b6953e7 100644 --- a/src/include/optimizer/cost.h +++ b/src/include/optimizer/cost.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: cost.h,v 1.24 1999/11/23 20:07:05 momjian Exp $ + * $Id: cost.h,v 1.25 2000/01/09 00:26:46 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -33,34 +33,28 @@ extern bool _enable_mergejoin_; extern bool _enable_hashjoin_; extern bool _enable_tidscan_; -extern Cost cost_seqscan(int relid, int relpages, int reltuples); -extern Cost cost_index(Oid indexid, int expected_indexpages, Cost selec, - int relpages, int reltuples, int indexpages, - int indextuples, bool is_injoin); -extern Cost cost_tidscan(List *evallist); -extern Cost cost_sort(List *pathkeys, int tuples, int width); -extern Cost cost_nestloop(Cost outercost, Cost innercost, int outertuples, - int innertuples, int outerpages, bool is_indexjoin); -extern Cost cost_mergejoin(Cost outercost, Cost innercost, - List *outersortkeys, List *innersortkeys, - int outersize, int innersize, int outerwidth, int innerwidth); -extern Cost cost_hashjoin(Cost outercost, Cost innercost, - int outersize, int innersize, - int outerwidth, int innerwidth, - Cost innerdisbursion); -extern int compute_rel_size(RelOptInfo *rel); -extern int compute_rel_width(RelOptInfo *rel); -extern int compute_joinrel_size(JoinPath *joinpath); -extern int page_size(int tuples, int width); +extern Cost cost_seqscan(RelOptInfo *baserel); +extern Cost cost_index(RelOptInfo *baserel, IndexOptInfo *index, + long expected_indexpages, Selectivity selec, + bool is_injoin); +extern Cost cost_tidscan(RelOptInfo *baserel, List *tideval); +extern Cost cost_sort(List *pathkeys, double tuples, int width); +extern Cost cost_nestloop(Path *outer_path, Path *inner_path, + bool is_indexjoin); +extern Cost cost_mergejoin(Path *outer_path, Path *inner_path, + List *outersortkeys, List *innersortkeys); +extern Cost cost_hashjoin(Path *outer_path, Path *inner_path, + Selectivity innerdisbursion); +extern void set_rel_rows_width(Query *root, RelOptInfo *rel); +extern void set_joinrel_rows_width(Query *root, RelOptInfo *rel, + JoinPath *joinpath); /* - * prototypes for fuctions in clausesel.h + * prototypes for clausesel.c * routines to compute clause selectivities */ -extern void set_clause_selectivities(List *restrictinfo_list, Cost new_selectivity); -extern Cost product_selec(List *restrictinfo_list); -extern void set_rest_relselec(Query *root, List *rel_list); -extern void set_rest_selec(Query *root, List *restrictinfo_list); -extern Cost compute_clause_selec(Query *root, Node *clause); +extern Selectivity restrictlist_selec(Query *root, List *restrictinfo_list); +extern Selectivity clauselist_selec(Query *root, List *clauses); +extern Selectivity compute_clause_selec(Query *root, Node *clause); #endif /* COST_H */ |