Function pgx_pg_sys::get_eclass_for_sort_expr

pub unsafe fn get_eclass_for_sort_expr(
    arg_root: *mut PlannerInfo, 
    arg_expr: *mut Expr, 
    arg_nullable_relids: Relids, 
    arg_opfamilies: *mut List, 
    arg_opcintype: Oid, 
    arg_collation: Oid, 
    arg_sortref: Index, 
    arg_rel: Relids, 
    arg_create_it: bool
) -> *mut EquivalenceClass