SAS中的分区运行总计

乔-您的答案出于任何原因都没有用，但是却使我处于正确的轨道上以找出答案。谢谢！

data want;    set have;    by id;    if first.id then running_total = 0;    if first.id then retained_total = 0;    running_total = retained_total + value;    retained_total = running_total;    retain retained_total;run;