diff options
Diffstat (limited to 'src/backend/optimizer/path/costsize.c')
| -rw-r--r-- | src/backend/optimizer/path/costsize.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c index 0724f9a6c9..e6edbdb1e8 100644 --- a/src/backend/optimizer/path/costsize.c +++ b/src/backend/optimizer/path/costsize.c @@ -209,6 +209,7 @@ cost_seqscan(Path *path, PlannerInfo *root, * * 'index' is the index to be used * 'indexQuals' is the list of applicable qual clauses (implicit AND semantics) + * 'indexOrderBys' is the list of ORDER BY operators for amcanorderbyop indexes * 'outer_rel' is the outer relation when we are considering using the index * scan as the inside of a nestloop join (hence, some of the indexQuals * are join clauses, and we should expect repeated scans of the index); @@ -218,18 +219,19 @@ cost_seqscan(Path *path, PlannerInfo *root, * additional fields of the IndexPath besides startup_cost and total_cost. * These fields are needed if the IndexPath is used in a BitmapIndexScan. * + * indexQuals is a list of RestrictInfo nodes, but indexOrderBys is a list of + * bare expressions. + * * NOTE: 'indexQuals' must contain only clauses usable as index restrictions. * Any additional quals evaluated as qpquals may reduce the number of returned * tuples, but they won't reduce the number of tuples we have to fetch from * the table, so they don't reduce the scan cost. - * - * NOTE: as of 8.0, indexQuals is a list of RestrictInfo nodes, where formerly - * it was a list of bare clause expressions. */ void cost_index(IndexPath *path, PlannerInfo *root, IndexOptInfo *index, List *indexQuals, + List *indexOrderBys, RelOptInfo *outer_rel) { RelOptInfo *baserel = index->rel; @@ -263,10 +265,11 @@ cost_index(IndexPath *path, PlannerInfo *root, * the fraction of main-table tuples we will have to retrieve) and its * correlation to the main-table tuple order. */ - OidFunctionCall8(index->amcostestimate, + OidFunctionCall9(index->amcostestimate, PointerGetDatum(root), PointerGetDatum(index), PointerGetDatum(indexQuals), + PointerGetDatum(indexOrderBys), PointerGetDatum(outer_rel), PointerGetDatum(&indexStartupCost), PointerGetDatum(&indexTotalCost), |