Function pull_varnos

src/backend/optimizer/util/var.c:187–206

 */

Relids
pull_varnos(PlannerInfo *root, Node *node)
{
	pull_varnos_context context;

	context.varnos = NULL;
	context.root = root;
	context.sublevels_up = 0;

	/*
	 * Must be prepared to start with a Query or a bare expression tree; if
	 * it's a Query, we don't want to increment sublevels_up.
	 */
	query_or_expression_tree_walker(node,
									pull_varnos_walker,
									(void *) &context,
									0);

	return context.varnos;
}

/*
 * pull_varnos_of_level