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评论日期 题目名称 评论内容 站长评论
2024-12-07 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
问一下这个运行环境是什么,mysql还是hive还是别的什么
mysql 8.0

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提交日期 题目名称 提交代码
2025-01-19 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(1) as trx_cnt,
min(date(trx_time)) as first_date
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 1;
2025-01-19 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(1) as trx_cnt,
min(date(trx_time)) as first_date
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 1;
2025-01-19 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 = 288 then '4.Doi'
when trx_amt = 288 then '5.DoubleFly'
else '6.Other' 
end as ser_typ,
count(1) as trx_cnt,
min(date(trx_time)) as first_date
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 1;
2025-01-19 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 = 288 then '4.Doi'
when trx_amt = 288 then '5.DoubleFly'
else '6.other' 
end as ser_typ,
count(1) as trx_cnt,
min(date(trx_time)) as first_date
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 1;
2025-01-19 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 usr_id,mch_nm order by trx_cnt desc;
2025-01-19 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),min(trx_time),count(1) as trx_cnt from cmb_usr_trx_rcd where usr_id = 5201314520 and trx_amt >= 288 group by usr_id,mch_nm order by trx_cnt desc;
2025-01-19 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;
2024-12-07 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 
mch_nm = '红玫瑰按摩保健休闲'
and
left(trx_time,7) between '2023-01' and '2024-06'
group by trx_amt
order by 
avg_trx_per_user desc limit 5
2024-12-07 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 
mch_nm = '红玫瑰按摩保健休闲'
and
    (year(trx_time) = 2023 and month(trx_time) between 1 and 12) 
    or (year(trx_time) = 2024 and month(trx_time) between 1 and 6)
group by trx_amt
order by 
avg_trx_per_user desc limit 5
2024-12-07 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;
2024-12-07 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
year(trx_time) = 2024 
and month(trx_time) between 1 and 7
and mch_nm = '红玫瑰按摩保健休闲'
group by trx_amt
order by trx_cnt desc limit 5
2024-12-07 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
    trx_date;
2024-12-07 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 year(trx_time) = 2024
and usr_id = '5201314520'
group by mch_nm
order by sum_trx_amt desc
2024-12-07 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 year(trx_time) = 2024
group by mch_nm
order by sum_trx_amt desc
2024-12-07 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 year(trx_time) = '2024'
group by mch_nm
order by sum_trx_amt desc
2024-12-07 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
group by mch_nm
order by sum_trx_amt desc
2024-12-07 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) between 0 and 5
		or hour(trx_time) between 22 and 23
)
    and usr_id = '5201314520' 
order by trx_time
2024-12-07 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
2024-12-07 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'
andusr_id = 5201314520 
order by
trx_time
2024-12-07 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 '2024-09-31'
orusr_id = 5201314520 
order by
trx_time