Function expandRelation

src/backend/parser/parse_relation.c:3263–3277

* expandRelation -- expandRTE subroutine */

 * expandRelation -- expandRTE subroutine
 */
static void
expandRelation(Oid relid, Alias *eref, int rtindex, int sublevels_up,
			   int location, bool include_dropped,
			   List **colnames, List **colvars)
{
	Relation	rel;

	/* Get the tupledesc and turn it over to expandTupleDesc */
	rel = relation_open(relid, AccessShareLock);
	expandTupleDesc(rel->rd_att, eref, rel->rd_att->natts, 0,
					rtindex, sublevels_up,
					location, include_dropped,
					colnames, colvars, RelationIsIVM(rel));
	relation_close(rel, AccessShareLock);
}

/*
 * expandTupleDesc -- expandRTE subroutine