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提交日期 题目名称 提交代码
2024-12-02 字符串与通配符(1)名称里面有特服,可以使用通配符 
select 
	count(distinct mch_nm) as mch_cnt
from 
	cmb_usr_trx_rcd 
where 
	mch_nm like '%按摩保健休闲%'
2024-12-02 分类(1)姿势太多很过分,分类要用CaseWhen 
select 
	case when trx_amt=288 then '1.WithHand'
when trx_amt=388 then '2.WithMimi'
when trx_amt=588 then '3.BlowJobbie'
when trx_amt=888 then '4.Doi'
when trx_amt=1288 then '5.DoubleFly'
else '6.other' 
end as ser_typ,
count(*) as trx_cnt,
min(date(trx_time)) as first_time
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and mch_nm = '红玫瑰按摩保健休闲'
group by ser_typ
order by ser_typ
2024-12-02 分类(1)姿势太多很过分,分类要用CaseWhen 
select 
	case when trx_amt=288 then '1.WithHand'
when trx_amt=388 then '2.WithMimi'
when trx_amt=588 then '3.BlowJobbie'
when trx_amt=888 then '4.Doi'
when trx_amt=1288 then '5.DoubleFly'
else '6.other' 
end as ser_typ,
count(*) as trx_cnt,
min(trx_time) as first_time
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and mch_nm = '红玫瑰按摩保健休闲'
group by ser_typ
order by ser_typ
2024-12-02 分类(1)姿势太多很过分,分类要用CaseWhen 
select 
	case when trx_amt=288 then '1'
when trx_amt=388 then '2'
when trx_amt=588 then '3'
when trx_amt=888 then '4'
when trx_amt=1288 then '5'
else 6 
end as ser_typ,
count(*) as trx_cnt,
min(trx_time) as first_time
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and mch_nm = '红玫瑰按摩保健休闲'
group by ser_typ
order by ser_typ
2024-12-02 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 toal_trx_amt,
count(*) 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
2024-12-02 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,
min(trx_time) as first_time,
count(*) as trx_cnt,
sum(trx_amt) as total_trx
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and trx_amt >= 288
group by mch_nm,usr_id
order by trx_cnt desc
2024-12-02 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,
min(trx_time) as first_time,
count(*) as trx_cnt,
sum(trx_amt) as total_trx
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and trx_amt >= 288
group by mch_nm
order by trx_cnt desc
2024-12-02 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
select 
	mch_nm,
min(trx_time) as first_time,
count(*) as trx_cnt,
sum(trx_amt) as total_trx
from 
	cmb_usr_trx_rcd 
where 
	usr_id = '5201314520'
and trx_amt >= 288
group by mch_nm
order by trx_cnt desc
2024-12-02 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
	usr_id = '5201314520'
and mch_nm = '红玫瑰按摩保健休闲'
group by usr_id
2024-12-02 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(*) as trx_cnt,
count(distinct usr_id) as usr_cnt,
count(*)/count(distinct usr_id) as avg_trx
from 
	cmb_usr_trx_rcd 
where
	mch_nm = '红玫瑰按摩保健休闲'
and date(trx_time) between '2023-01-01' and '2024-06-30'
group by trx_amt
order by avg_trx desc
limit 5
2024-12-02 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(*) 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) between 1 and 7
group by trx_amt
order by trx_cnt desc
limit 5
2024-12-02 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) between 1 and 7
group by trx_amt
order by trx_cnt desc
limit 5
2024-12-02 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 trx_amt_max,
min(trx_amt) as trx_amt_min,
avg(trx_amt) as trx_amt_avg,
sum(trx_amt) as trx_amt_sum
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 trx_date
2024-12-02 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 trx_amt_max,
min(trx_amt) as trx_amt_min,
avg(trx_amt) as trx_amt_avg,
sum(trx_amt) as trx_amt_sum
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 trx_date
limit 10
2024-12-02 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_time, 
sum(trx_amt) as trx_amt_sum, 
avg(trx_amt) as trx_amt_avg,
min(trx_amt) as trx_amt_min,
max(trx_amt) as trx_amt_max
from cmb_usr_trx_rcd 
where usr_id='5201314520'
and mch_nm = '红玫瑰按摩保健休闲'
and trx_time between '2024-09-01' and '2024-09-30'
group by date(trx_time)
order by trx_time
2024-12-02 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 trx_amt
from cmb_usr_trx_rcd 
	where year(trx_time) = 2024
and usr_id='5201314520'
group by mch_nm
order by trx_amt desc
2024-12-01 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 
	date(trx_time) between '2024-09-01' and '2024-09-30'
and ((hour(trx_time) <= 5) or (hour(trx_time) >= 22))
and usr_id = '5201314520'
order by trx_time
2024-12-01 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 date(trx_time) between '2024-09-01' and '2024-09-30' and hour(trx_time) between 1 and 5
and usr_id='5201314520'
order by trx_time
2024-12-01 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 date(trx_time) between '2024-09-01' and '2024-09-30' and hour(trx_time) between 1 and 5
and usr_id='5201314520'
order by trx_time
limit 5
2024-12-01 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 date(trx_time) between '2024-09-01' and '2024-09-30'
and usr_id = '5201314520'
order by trx_time