Function build_simple_rel

src/backend/optimizer/util/relnode.c:213–414

* build_simple_rel * Construct a new RelOptInfo for a base relation or 'other' relation. */

 *	  Construct a new RelOptInfo for a base relation or 'other' relation.
 */
RelOptInfo *
build_simple_rel(PlannerInfo *root, int relid, RelOptInfo *parent)
{
	RelOptInfo *rel;
	RangeTblEntry *rte;

	/* Rel should not exist already */
	Assert(relid > 0 && relid < root->simple_rel_array_size);
	if (root->simple_rel_array[relid] != NULL)
		elog(ERROR, "rel %d already exists", relid);

	/* Fetch RTE for relation */
	rte = root->simple_rte_array[relid];
	Assert(rte != NULL);

	rel = makeNode(RelOptInfo);
	rel->reloptkind = parent ? RELOPT_OTHER_MEMBER_REL : RELOPT_BASEREL;
	rel->relids = bms_make_singleton(relid);
	rel->rows = 0;
	/* cheap startup cost is interesting iff not all tuples to be retrieved */
	rel->consider_startup = (root->tuple_fraction > 0);
	rel->consider_param_startup = false;	/* might get changed later */
	rel->consider_parallel = false; /* might get changed later */
	rel->reltarget = create_empty_pathtarget();
	rel->pathlist = NIL;
	rel->ppilist = NIL;
	rel->partial_pathlist = NIL;
	rel->cheapest_startup_path = NULL;
	rel->cheapest_total_path = NULL;
	rel->cheapest_unique_path = NULL;
	rel->cheapest_parameterized_paths = NIL;
	rel->relid = relid;
	rel->rtekind = rte->rtekind;
	/* min_attr, max_attr, attr_needed, attr_widths are set below */
	rel->lateral_vars = NIL;
	rel->indexlist = NIL;
	rel->statlist = NIL;
	rel->pages = 0;
	rel->tuples = 0;
	rel->allvisfrac = 0;
	rel->eclass_indexes = NULL;
	rel->subroot = NULL;
	rel->subplan_params = NIL;
	rel->rel_parallel_workers = -1; /* set up in get_relation_info */
	rel->amflags = 0;
	rel->serverid = InvalidOid;
	rel->segSeverids = NIL;
	rel->userid = rte->checkAsUser;
	rel->useridiscurrent = false;
	rel->exec_location = FTEXECLOCATION_NOT_DEFINED;
	rel->fdwroutine = NULL;
	rel->fdw_private = NULL;
	rel->unique_for_rels = NIL;
	rel->non_unique_for_rels = NIL;
	rel->baserestrictinfo = NIL;
	rel->baserestrictcost.startup = 0;
	rel->baserestrictcost.per_tuple = 0;
	rel->baserestrict_min_security = UINT_MAX;