Function pgrx_pg_sys::join_selectivity

pub unsafe fn join_selectivity(
    arg_root: *mut PlannerInfo,
    arg_operatorid: Oid,
    arg_args: *mut List,
    arg_inputcollid: Oid,
    arg_jointype: JoinType,
    arg_sjinfo: *mut SpecialJoinInfo
) -> Selectivity