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提交日期 题目名称 提交代码
2024-12-24 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
select usr_id,mch_nm,sum(trx_amt) as trx_amt,count(mch_nm) as trx_cmt, min(trx_time) as first_time
from cmb_usr_trx_rcd
where usr_id = '5201314520' and trx_amt >= 288
group by mch_nm
order by trx_cmt desc
2024-12-24 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
select usr_id,mch_nm,count(mch_nm) as trx_cmt,sum(trx_amt) as trx_amt, min(trx_time) as first_time
from cmb_usr_trx_rcd
where usr_id = '5201314520' and trx_amt >= 288
group by mch_nm
order by trx_cmt desc
2024-12-06 分组与聚合函数(5)想知道何时成瘾,用Max Or Min? 
select
    usr_id,
    min(trx_time) as first_time,  
    mch_nm
from
    cmb_usr_trx_rcd
where
    mch_nm = '红玫瑰按摩保健休闲'
    and usr_id = '5201314520'
group by
    usr_id, mch_nm;
2024-12-06 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
select trx_amt, count(trx_amt) total_trx_cnt, count(distinct usr_id) unique_usr_cnt
,count(trx_amt)/count(distinct usr_id) avg_trx_per_user
from cmb_usr_trx_rcd
where left(trx_time,7) between '2023-01' and '2024-06'
and mch_nm = '红玫瑰按摩保健休闲'
group by trx_amt
order by avg_trx_per_user desc
limit 5
2024-12-06 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
select trx_amt, count(trx_amt) total_trx_cnt, count(distinct usr_id) unique_usr_cnt
,sum(trx_amt)/sum(distinct usr_id) avg_trx_per_user
from cmb_usr_trx_rcd
where left(trx_time,7) between '2023-01' and '2024-06'
and mch_nm = '红玫瑰按摩保健休闲'
group by trx_amt
order by avg_trx_per_user desc
limit 5
2024-12-06 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
select trx_amt, sum(trx_amt) total_trx_cnt, sum(distinct usr_id) unique_usr_cnt
,sum(trx_amt)/sum(distinct usr_id) avg_trx_per_user
from cmb_usr_trx_rcd
where left(trx_time,7) between '2023-01' and '2024-06'
and mch_nm = '红玫瑰按摩保健休闲'
group by trx_amt
order by avg_trx_per_user desc
limit 5
2024-12-06 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
select trx_amt, sum(trx_amt) total_trx_cnt, sum(distinct usr_id) unique_usr_cnt
,sum(trx_amt)/sum(distinct usr_id) avg_trx_per_user
from cmb_usr_trx_rcd
where left(trx_time,7) between '2023-01' and '2024-06'
group by trx_amt
order by avg_trx_per_user desc
limit 5
2024-12-06 分组与聚合函数(3)五花八门的项目,其实都有固定套路(1) 
select
    trx_amt, 
    count(1) as trx_cnt 
from
    cmb_usr_trx_rcd
where
    mch_nm = '红玫瑰按摩保健休闲' 
    and year(trx_time) = 2024 
    and month(trx_time) in (1, 2, 3, 4, 5, 6, 7) 
group by
    trx_amt 
order by
    trx_cnt desc 
limit 5;
2024-12-06 分组与聚合函数(2)擦边营收怎么样,聚合函数可看出 
select date(trx_time) trx_date, max(trx_amt) max_trx_amt, min(trx_amt) min_trx_amt, avg(trx_amt) avg_trx_amt, sum(trx_amt) total_trx_amt
from cmb_usr_trx_rcd
where year(trx_time) = 2024 and month(trx_time) = 9
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by date(trx_time)
2024-12-06 分组与聚合函数(1)Money全都花在哪,GroupBy来查一查 
select mch_nm, sum(trx_amt) sum_trx_amt
from cmb_usr_trx_rcd
where 
    year(trx_time) = 2024 
    and usr_id = '5201314520' 
group by mch_nm
order bysum(trx_amt) desc
2024-12-06 分组与聚合函数(1)Money全都花在哪,GroupBy来查一查 
select mch_nm, sum(trx_amt) sum_trx_amt
from cmb_usr_trx_rcd
group by mch_nm
order bysum(trx_amt) desc
2024-12-06 条件过滤(3)Hour函数很给力,组合条件要仔细 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and date(trx_time) between '20240901' and '20240930'
and (hour(trx_time) between 22 and 24 or hour(trx_time) between 0 and 5)
order by trx_time
2024-12-06 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and date(trx_time) between '20240901' and '20240930'
and hour(trx_time) between 1 and 5
order by trx_time
2024-12-06 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and date(trx_time) between '20240901' and '20240930'
and hour(trx_time) between 1 and 6
order by trx_time
2024-12-06 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and date(trx_time) between '20240901' and '20240930'
order by trx_time asc
2024-12-06 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and (trx_time between '20240901' and '20240930')
order by trx_time asc
limit 8
2024-12-06 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and (trx_time between '20240901' and '20240930')
order by trx_time asc
2024-12-06 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and (trx_time between '20240901' and '20240930')
2024-12-06 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
select * from cmb_usr_trx_rcd
where usr_id = '5201314520'
and trx_time between '20240901' and '20240930'