Function surface_selectables

lib/sqlalchemy/sql/util.py:481–489

(clause)

def surface_selectables(clause):
    stack = [clause]
    while stack:
        elem = stack.pop()
        yield elem
        if isinstance(elem, Join):
            stack.extend((elem.left, elem.right))
        elif isinstance(elem, FromGrouping):
            stack.append(elem.element)


def surface_selectables_only(clause: ClauseElement) -> Iterator[ClauseElement]: