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| 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/tidpath.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/tidpath.c')
| -rw-r--r-- | src/backend/optimizer/path/tidpath.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/backend/optimizer/path/tidpath.c b/src/backend/optimizer/path/tidpath.c index 7106fa75d48..198a7f02690 100644 --- a/src/backend/optimizer/path/tidpath.c +++ b/src/backend/optimizer/path/tidpath.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/tidpath.c,v 1.8 2001/01/24 19:42:58 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/tidpath.c,v 1.9 2001/06/05 05:26:04 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -25,7 +25,7 @@ #include "parser/parse_coerce.h" #include "utils/lsyscache.h" -static void create_tidscan_joinpaths(RelOptInfo *rel); +static void create_tidscan_joinpaths(Query *root, RelOptInfo *rel); static List *TidqualFromRestrictinfo(List *relids, List *restrictinfo); static bool isEvaluable(int varno, Node *node); static Node *TidequalClause(int varno, Expr *node); @@ -243,7 +243,7 @@ TidqualFromRestrictinfo(List *relids, List *restrictinfo) * XXX does this actually work? */ static void -create_tidscan_joinpaths(RelOptInfo *rel) +create_tidscan_joinpaths(Query *root, RelOptInfo *rel) { List *rlst = NIL, *lst; @@ -266,7 +266,7 @@ create_tidscan_joinpaths(RelOptInfo *rel) pathnode->tideval = tideval; pathnode->unjoined_relids = joininfo->unjoined_relids; - cost_tidscan(&pathnode->path, rel, tideval); + cost_tidscan(&pathnode->path, root, rel, tideval); rlst = lappend(rlst, pathnode); } @@ -286,6 +286,6 @@ create_tidscan_paths(Query *root, RelOptInfo *rel) rel->baserestrictinfo); if (tideval) - add_path(rel, (Path *) create_tidscan_path(rel, tideval)); - create_tidscan_joinpaths(rel); + add_path(rel, (Path *) create_tidscan_path(root, rel, tideval)); + create_tidscan_joinpaths(root, rel); } |