方案二實(shí)現(xiàn)如下：

-- 級(jí)聯(lián)累加求和場(chǎng)景 /* login.txtA,2021-01,5 A,2021-01,15 B,2021-01,5 A,2021-01,8 B,2021-01,25 A,2021-01,5 A,2021-02,4 A,2021-02,6 B,2021-02,10 B,2021-02,5 A,2021-03,7 B,2021-03,9 A,2021-03,11 B,2021-03,6 */ create table money (user_id string,month string,money int ) row format delimited fields terminated by ',';load data local inpath '/root/hivedata/money.txt' overwrite into table money;select * from money;-- 先查詢每個(gè)用戶每個(gè)月的消費(fèi)總金額 select user_id,month,sum(money) month_money from money group by user_id, month;-- 再累計(jì)每個(gè)用戶到當(dāng)前月的消費(fèi)總金額 with tmp_money as (select user_id,month,sum(money) month_moneyfrom moneygroup by user_id, month ) select user_id,month,month_money,sum(month_money) over (partition by user_id order by month-- rows between unbounded preceding and current row) as sum_month_money from tmp_money;

總結(jié)

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