diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-05 05:26:05 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-05 05:26:05 +0000 |
| commit | 7c579fa12df0def35192e1e3cfc9ea7ab90bb0cb (patch) | |
| tree | 70886176df00ac556e7992fde6e2ffd7c90530f9 /src/backend/optimizer/path/clausesel.c | |
| parent | 28d2420eefdacfa928138d4b302fd6a31286225b (diff) | |
Further work on making use of new statistics in planner. Adjust APIs
of costsize.c routines to pass Query root, so that costsize can figure
more things out by itself and not be so dependent on its callers to tell
it everything it needs to know. Use selectivity of hash or merge clause
to estimate number of tuples processed internally in these joins
(this is more useful than it would've been before, since eqjoinsel is
somewhat more accurate than before).
Diffstat (limited to 'src/backend/optimizer/path/clausesel.c')
| -rw-r--r-- | src/backend/optimizer/path/clausesel.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/src/backend/optimizer/path/clausesel.c b/src/backend/optimizer/path/clausesel.c index 78407fb833a..cafc01fc33f 100644 --- a/src/backend/optimizer/path/clausesel.c +++ b/src/backend/optimizer/path/clausesel.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.44 2001/05/20 20:28:18 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.45 2001/06/05 05:26:04 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -48,9 +48,6 @@ typedef struct RangeQueryClause static void addRangeClause(RangeQueryClause **rqlist, Node *clause, bool varonleft, bool isLTsel, Selectivity s2); -static Selectivity clause_selectivity(Query *root, - Node *clause, - int varRelid); /**************************************************************************** @@ -364,7 +361,7 @@ addRangeClause(RangeQueryClause **rqlist, Node *clause, * When varRelid is 0, all variables are treated as variables. This * is appropriate for ordinary join clauses and restriction clauses. */ -static Selectivity +Selectivity clause_selectivity(Query *root, Node *clause, int varRelid) |