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提交日期 题目名称 提交代码
2024-12-13 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(1) as trx_cnt,
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_cnt desc;
2024-12-13 分组与聚合函数(5)想知道何时成瘾,用Max Or Min? 
select 
 	usr_id,
min(timestamp(trx_time)) as first_time ,
mch_nm
from cmb_usr_trx_rcd
where usr_id=5201314520
	and mch_nm= '红玫瑰按摩保健休闲'
2024-12-13 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(1) as total_trx_cnt,
count(distinct usr_id) as unique_usr_cnt,
count(1)/ count(distinct usr_id) as avg_trx_per_user
from cmb_usr_trx_rcd
where STR_TO_DATE(trx_time, '%Y-%m-%d %H:%i:%s') 
BETWEEN '2023-01-01 00:00:00' AND '2024-06-30 23:59:59'
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(3)五花八门的项目,其实都有固定套路(1) 
select 
	trx_amt,
	count(trx_amt) as trx_cnt
from 
	cmb_usr_trx_rcd 
where 
	mch_nm = '红玫瑰按摩保健休闲'
and 
	date(trx_time) between '2024-01-01' and '2024-07-31'
group by 
	trx_amt
order by count(trx_amt) desc
limit 5
2024-11-29 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) as trx_date,
max(trx_amt) as max_trx_amt,
min(trx_amt) as min_trx_amt,
avg(trx_amt) as avg_trx_amt,
sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where mch_nm = '红玫瑰按摩保健休闲'
and date(trx_time) between '2024-09-01' and '2024-09-30'
group by date(trx_time)
order by date(trx_time)
2024-11-29 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) as trx_date,
max(trx_amt) as max_trx_amt,
min(trx_amt) as min_trx_amt,
avg(trx_amt) as avg_trx_amt,
sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where mch_nm = '红玫瑰按摩保健休闲'
and date(trx_time) between '2024-09-01' and '2024-09-30'
group by trx_time
order by trx_time
2024-11-29 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) as sum_trx_amt
from cmb_usr_trx_rcd
where usr_id = '5201314520'
and year(trx_time) = 2024
group by mch_nm
order by sum_trx_amt desc
2024-11-29 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 '2024-09-01' and '2024-09-30'
and (hour(trx_time) >= 22 or hour(trx_time) <= 5)
order by trx_time
2024-11-29 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 '2024-09-01' and '2024-09-30'
and hour(trx_time) >= 22 or hour(trx_time) <= 5
order by trx_time
2024-11-29 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 '2024-9-1' and '2024-9-30'
and hour(trx_time) between 1 and 5
order by trx_time
2024-11-29 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 '2024-09-01' and '2024-09-30'
order by trx_time
2024-11-29 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 '2024-09-01' and '2024-09-30'