Function create_subqueryscan_path

src/backend/optimizer/util/pathnode.c:3043–3071

* create_subqueryscan_path * Creates a path corresponding to a scan of a subquery, * returning the pathnode. */

 *	  returning the pathnode.
 */
SubqueryScanPath *
create_subqueryscan_path(PlannerInfo *root, RelOptInfo *rel, Path *subpath,
						 List *pathkeys, CdbPathLocus locus, Relids required_outer)
{
	SubqueryScanPath *pathnode = makeNode(SubqueryScanPath);

	pathnode->path.pathtype = T_SubqueryScan;
	pathnode->path.parent = rel;
	pathnode->path.pathtarget = rel->reltarget;
	pathnode->path.param_info = get_baserel_parampathinfo(root, rel,
														  required_outer);
	pathnode->path.parallel_aware = false;
	pathnode->path.parallel_safe = rel->consider_parallel &&
		subpath->parallel_safe;
	pathnode->path.parallel_workers = subpath->parallel_workers;
	pathnode->path.pathkeys = pathkeys;
	pathnode->subpath = subpath;

	pathnode->path.locus = locus;
	pathnode->path.motionHazard = subpath->motionHazard;
	pathnode->path.barrierHazard = subpath->barrierHazard;
	pathnode->path.rescannable = false;
	pathnode->path.sameslice_relids = NULL;

	pathnode->required_outer = bms_copy(required_outer);
	cost_subqueryscan(pathnode, root, rel, pathnode->path.param_info);

	return pathnode;
}

/*
 * create_functionscan_path