diff options
Diffstat (limited to 'src/backend/optimizer/util/relnode.c')
| -rw-r--r-- | src/backend/optimizer/util/relnode.c | 43 |
1 files changed, 10 insertions, 33 deletions
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c index fe83ec45192..f04c6b76f49 100644 --- a/src/backend/optimizer/util/relnode.c +++ b/src/backend/optimizer/util/relnode.c @@ -194,7 +194,7 @@ build_simple_rel(PlannerInfo *root, int relid, RelOptInfo *parent) rel->baserestrict_min_security = UINT_MAX; rel->joininfo = NIL; rel->has_eclass_joins = false; - rel->consider_partitionwise_join = false; /* might get changed later */ + rel->consider_partitionwise_join = false; /* might get changed later */ rel->part_scheme = NULL; rel->nparts = 0; rel->boundinfo = NULL; @@ -247,6 +247,13 @@ build_simple_rel(PlannerInfo *root, int relid, RelOptInfo *parent) rel->attr_widths = (int32 *) palloc0((rel->max_attr - rel->min_attr + 1) * sizeof(int32)); break; + case RTE_RESULT: + /* RTE_RESULT has no columns, nor could it have whole-row Var */ + rel->min_attr = 0; + rel->max_attr = -1; + rel->attr_needed = NULL; + rel->attr_widths = NULL; + break; default: elog(ERROR, "unrecognized RTE kind: %d", (int) rte->rtekind); @@ -609,7 +616,7 @@ build_join_rel(PlannerInfo *root, joinrel->baserestrict_min_security = UINT_MAX; joinrel->joininfo = NIL; joinrel->has_eclass_joins = false; - joinrel->consider_partitionwise_join = false; /* might get changed later */ + joinrel->consider_partitionwise_join = false; /* might get changed later */ joinrel->top_parent_relids = NULL; joinrel->part_scheme = NULL; joinrel->nparts = 0; @@ -784,7 +791,7 @@ build_child_join_rel(PlannerInfo *root, RelOptInfo *outer_rel, joinrel->baserestrictcost.per_tuple = 0; joinrel->joininfo = NIL; joinrel->has_eclass_joins = false; - joinrel->consider_partitionwise_join = false; /* might get changed later */ + joinrel->consider_partitionwise_join = false; /* might get changed later */ joinrel->top_parent_relids = NULL; joinrel->part_scheme = NULL; joinrel->nparts = 0; @@ -1109,36 +1116,6 @@ subbuild_joinrel_joinlist(RelOptInfo *joinrel, /* - * build_empty_join_rel - * Build a dummy join relation describing an empty set of base rels. - * - * This is used for queries with empty FROM clauses, such as "SELECT 2+2" or - * "INSERT INTO foo VALUES(...)". We don't try very hard to make the empty - * joinrel completely valid, since no real planning will be done with it --- - * we just need it to carry a simple Result path out of query_planner(). - */ -RelOptInfo * -build_empty_join_rel(PlannerInfo *root) -{ - RelOptInfo *joinrel; - - /* The dummy join relation should be the only one ... */ - Assert(root->join_rel_list == NIL); - - joinrel = makeNode(RelOptInfo); - joinrel->reloptkind = RELOPT_JOINREL; - joinrel->relids = NULL; /* empty set */ - joinrel->rows = 1; /* we produce one row for such cases */ - joinrel->rtekind = RTE_JOIN; - joinrel->reltarget = create_empty_pathtarget(); - - root->join_rel_list = lappend(root->join_rel_list, joinrel); - - return joinrel; -} - - -/* * fetch_upper_rel * Build a RelOptInfo describing some post-scan/join query processing, * or return a pre-existing one if somebody already built it. |