diff options
Diffstat (limited to 'src/backend/optimizer/util/pathnode.c')
| -rw-r--r-- | src/backend/optimizer/util/pathnode.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c index 14b62b80fc8..ec0fc8a29ab 100644 --- a/src/backend/optimizer/util/pathnode.c +++ b/src/backend/optimizer/util/pathnode.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.115 2005/04/06 16:34:06 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.116 2005/04/19 22:35:17 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -472,6 +472,39 @@ create_index_path(Query *root, } /* + * create_bitmap_heap_path + * Creates a path node for a bitmap scan. + * + * 'bitmapqual' is an AND/OR tree of IndexPath nodes. + */ +BitmapHeapPath * +create_bitmap_heap_path(Query *root, + RelOptInfo *rel, + Node *bitmapqual) +{ + BitmapHeapPath *pathnode = makeNode(BitmapHeapPath); + + pathnode->path.pathtype = T_BitmapHeapScan; + pathnode->path.parent = rel; + pathnode->path.pathkeys = NIL; /* always unordered */ + + pathnode->bitmapqual = bitmapqual; + + /* It's not an innerjoin path. */ + pathnode->isjoininner = false; + + /* + * The number of rows is the same as the parent rel's estimate, since + * this isn't a join inner indexscan. + */ + pathnode->rows = rel->rows; + + cost_bitmap_scan(&pathnode->path, root, rel, bitmapqual, false); + + return pathnode; +} + +/* * create_tidscan_path * Creates a path corresponding to a tid_direct scan, returning the * pathnode. |