import agg_factory symbols $factory;
use plato;

define subquery $multiaggr_win() as
    select
        MULTI_AGGREGATE_BY(AsStruct(subkey as a,value as b), $factory) over w as ma,
        ROW_NUMBER() over w as rn
    from Input window w as (order by key);
end define;

export $multiaggr_win;