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Diffstat (limited to 'src/backend/optimizer/path/allpaths.c')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 932c84c949b..fbb2cda9d73 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -2912,6 +2912,30 @@ remove_unused_subquery_outputs(Query *subquery, RelOptInfo *rel) } /* + * create_partial_bitmap_paths + * Build partial bitmap heap path for the relation + */ +void +create_partial_bitmap_paths(PlannerInfo *root, RelOptInfo *rel, + Path *bitmapqual) +{ + int parallel_workers; + double pages_fetched; + + /* Compute heap pages for bitmap heap scan */ + pages_fetched = compute_bitmap_pages(root, rel, bitmapqual, 1.0, + NULL, NULL); + + parallel_workers = compute_parallel_worker(rel, pages_fetched, 0); + + if (parallel_workers <= 0) + return; + + add_partial_path(rel, (Path *) create_bitmap_heap_path(root, rel, + bitmapqual, rel->lateral_relids, 1.0, parallel_workers)); +} + +/* * Compute the number of parallel workers that should be used to scan a * relation. We compute the parallel workers based on the size of the heap to * be scanned and the size of the index to be scanned, then choose a minimum |