diff options
Diffstat (limited to 'src/backend/optimizer/path/joinpath.c')
| -rw-r--r-- | src/backend/optimizer/path/joinpath.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c index d8bfe6270de..0dbfef8b2fc 100644 --- a/src/backend/optimizer/path/joinpath.c +++ b/src/backend/optimizer/path/joinpath.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.57 2000/09/29 18:21:32 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.58 2000/10/05 19:48:26 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -45,7 +45,7 @@ static void hash_inner_and_outer(Query *root, RelOptInfo *joinrel, List *restrictlist, JoinType jointype); static Path *best_innerjoin(List *join_paths, List *outer_relid, JoinType jointype); -static Selectivity estimate_disbursion(Query *root, Var *var); +static Selectivity estimate_dispersion(Query *root, Var *var); static List *select_mergejoin_clauses(RelOptInfo *joinrel, RelOptInfo *outerrel, RelOptInfo *innerrel, @@ -637,7 +637,7 @@ hash_inner_and_outer(Query *root, *right, *inner; List *hashclauses; - Selectivity innerdisbursion; + Selectivity innerdispersion; if (restrictinfo->hashjoinoperator == InvalidOid) continue; /* not hashjoinable */ @@ -667,8 +667,8 @@ hash_inner_and_outer(Query *root, /* always a one-element list of hash clauses */ hashclauses = makeList1(restrictinfo); - /* estimate disbursion of inner var for costing purposes */ - innerdisbursion = estimate_disbursion(root, inner); + /* estimate dispersion of inner var for costing purposes */ + innerdispersion = estimate_dispersion(root, inner); /* * We consider both the cheapest-total-cost and @@ -682,7 +682,7 @@ hash_inner_and_outer(Query *root, innerrel->cheapest_total_path, restrictlist, hashclauses, - innerdisbursion)); + innerdispersion)); if (outerrel->cheapest_startup_path != outerrel->cheapest_total_path) add_path(joinrel, (Path *) create_hashjoin_path(joinrel, @@ -691,7 +691,7 @@ hash_inner_and_outer(Query *root, innerrel->cheapest_total_path, restrictlist, hashclauses, - innerdisbursion)); + innerdispersion)); } } @@ -759,7 +759,7 @@ best_innerjoin(List *join_paths, Relids outer_relids, JoinType jointype) } /* - * Estimate disbursion of the specified Var + * Estimate dispersion of the specified Var * * We use a default of 0.1 if we can't figure out anything better. * This will typically discourage use of a hash rather strongly, @@ -768,7 +768,7 @@ best_innerjoin(List *join_paths, Relids outer_relids, JoinType jointype) * seem much worse). */ static Selectivity -estimate_disbursion(Query *root, Var *var) +estimate_dispersion(Query *root, Var *var) { Oid relid; @@ -780,7 +780,7 @@ estimate_disbursion(Query *root, Var *var) if (relid == InvalidOid) return 0.1; - return (Selectivity) get_attdisbursion(relid, var->varattno, 0.1); + return (Selectivity) get_attdispersion(relid, var->varattno, 0.1); } /* |