diff options
Diffstat (limited to 'src/backend/optimizer/util/relnode.c')
| -rw-r--r-- | src/backend/optimizer/util/relnode.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c index 680184c0e9f..3878c3752fe 100644 --- a/src/backend/optimizer/util/relnode.c +++ b/src/backend/optimizer/util/relnode.c @@ -99,6 +99,8 @@ build_simple_rel(PlannerInfo *root, int relid, RelOptKind reloptkind) rel->relids = bms_make_singleton(relid); rel->rows = 0; rel->width = 0; + /* cheap startup cost is interesting iff not all tuples to be retrieved */ + rel->consider_startup = (root->tuple_fraction > 0); rel->reltargetlist = NIL; rel->pathlist = NIL; rel->ppilist = NIL; @@ -354,6 +356,8 @@ build_join_rel(PlannerInfo *root, joinrel->relids = bms_copy(joinrelids); joinrel->rows = 0; joinrel->width = 0; + /* cheap startup cost is interesting iff not all tuples to be retrieved */ + joinrel->consider_startup = (root->tuple_fraction > 0); joinrel->reltargetlist = NIL; joinrel->pathlist = NIL; joinrel->ppilist = NIL; |