问题聚集度：最小的分母占比，贡献最多的分子占比，即小规模贡献大问题。

selectcity_name,user_id,rf_type,deal_ord_cnt,sale_amt,rf_ord_cnt,rf_amt,rf_ra,rf_amt_ra,rf_all,ord_cnt_all,rf_gx,ord_cnt_gx,del_gx,row_number() over(partition by rf_type order by del_gx desc,rf_ra desc,user_id) as rn    -- 贡献差由大到小排序,sum(rf_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id) as rf_ordby    -- 分子累计,sum(deal_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id) as ord_cnt_ordby    -- 分母累计,(sum(rf_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / rf_all as rf_ordby_ra    -- 分子累计占比曲线,(sum(deal_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / ord_cnt_all as ord_cnt_ordby_ra    -- 分母累计占比曲线,((sum(rf_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / rf_all -(sum(deal_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / ord_cnt_all) del1    -- 累计贡献差,lead(((sum(rf_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / rf_all -(sum(deal_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / ord_cnt_all),1) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id) - ((sum(rf_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / rf_all -(sum(deal_ord_cnt) over(partition by rf_type order by del_gx desc,rf_ra desc,user_id)) / ord_cnt_all) as del2    --二阶差分，大于0的部分为聚集部分
from
(
selectcity_name,user_id,deal_ord_cnt  -- 分母,sale_amt,rf_cancel_ord_cnt as rf_ord_cnt    -- 分子,rf_qx_amt as rf_amt,rf_cancel_ord_cnt / deal_ord_cnt as rf_ra    -- 监控指标,rf_qx_amt/sale_amt as rf_amt_ra,sum(rf_cancel_ord_cnt) over() as rf_all,sum(deal_ord_cnt) over() as ord_cnt_all,rf_cancel_ord_cnt / (sum(rf_cancel_ord_cnt) over()) as rf_gx    -- 分子贡献,deal_ord_cnt / (sum(deal_ord_cnt) over()) as ord_cnt_gx    -- 分母贡献,rf_cancel_ord_cnt / (sum(rf_cancel_ord_cnt) over()) - deal_ord_cnt / (sum(deal_ord_cnt) over()) as del_gx    -- 贡献差值,'取消订单' as rf_type
from table_refund
where rf_cancel_ord_cnt > 0    -- 限定分子>0
) t0