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2024-12-24 小结(1)大数据早就能扫黄,找足证据不慌张 
select 
case when trx_amt >= 200 
and (mod(floor(trx_amt),100) = 88 or mod(floor(trx_amt),100) = 98)
and (hour(trx_time) >= 23 or hour(trx_time) <= 3)
then 'illegal'
else 'other' 
end as trx_typ,
count(1) as trx_cnt,
sum(trx_amt) as trx_amt,
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where usr_id = '5201314520'
group by trx_typ
order by mch_cnt desc
2024-12-24 小结(1)大数据早就能扫黄,找足证据不慌张 
select 
case when trx_amt > 200 
and (mod(floor(trx_amt),100) = 88 or mod(floor(trx_amt),100) = 98)
and (hour(trx_time >= 23) or hour(trx_time) <= 3)
then 'illegal'
else 'other' 
end as type,
count(trx_amt) as trx_cnt,
sum(trx_amt) as trx_amt,
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where usr_id = '5201314520'
group by type
order by mch_cnt desc
2024-12-24 字符串与通配符(2)好多关键词做规则,可以使用rlike 
select 
case when mch_nm like '%按摩保健休闲%' then '按摩保健休闲'
when mch_nm rlike '(?i)按摩|保健|休闲|SPA|养生|会所' then '按摩、保健、休闲、养生、SPA、会所'
end as reg_rules, 
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲%' or mch_nm rlike '(?i)按摩|保健|休闲|SPA|养生|会所'
group by reg_rules
order by mch_cnt desc
2024-12-24 字符串与通配符(2)好多关键词做规则,可以使用rlike 
select 
case when mch_nm like '%按摩保健休闲%' then '按摩保健休闲'
when mch_nm rlike '(?i)(按摩|保健|休闲|SPA|养生|会所)' then '按摩、保健、休闲、养生、SPA、会所'
end as reg_rules, 
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲%' or mch_nm rlike '(?i)(按摩|保健|休闲|SPA|养生|会所)'
group by reg_rules
order by mch_cnt desc
2024-12-24 字符串与通配符(2)好多关键词做规则,可以使用rlike 
select 
case when mch_nm like '%按摩保健休闲%' then '按摩保健休闲'
when mch_nm rlike '(?i).*(按摩|保健|休闲|SPA|养生|会所).*' then '按摩、保健、休闲、养生、SPA、会所'
end as reg_rules, 
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲%' or mch_nm rlike '(?i).*(按摩|保健|休闲|SPA|养生|会所).*'
group by reg_rules
order by mch_cnt desc
2024-12-24 字符串与通配符(2)好多关键词做规则,可以使用rlike 
select 
case when mch_nm like '%按摩保健休闲%' then '按摩保健休闲'
when mch_nm rlike '(?i).*(按摩|保健|休闲|SPA|养生|会所).*' then '按摩、保健、休闲、SPA、养生、会所'
end as reg_rules, 
count(distinct(mch_nm)) as mch_cnt
from cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲%' or mch_nm rlike '(?i).*(按摩|保健|休闲|SPA|养生|会所).*'
group by reg_rules
order by mch_cnt desc
2024-12-18 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'
2024-12-18 字符串与通配符(1)名称里面有特服,可以使用通配符 
select count(mch_nm) as mch_cnt
from
cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲'
2024-12-18 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
2024-12-18 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
2024-11-26 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(trx_amt) 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
2024-11-26 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, mch_nm
2024-11-26 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
2024-11-26 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) as total_trx_cnt,
count(distinct(usr_id)) as unique_usr_cnt,
count(trx_amt) / count(distinct(usr_id)) as 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;
2024-11-26 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 date(trx_time) 
between '2024-1-1' and '2024-7-31'
and mch_nm = '红玫瑰按摩保健休闲'
group by trx_amt
order by trx_cnt desc limit 5
2024-11-26 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 date(trx_time) between '2024-09-01' and '2024-09-30'
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by trx_date
2024-11-26 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 sum_trx_amt
from cmb_usr_trx_rcd
where date(trx_time) between '2024-09-01' and '2024-09-30'
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by trx_date
2024-11-26 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 usr_id = '5201314520'
and date(trx_time) between '2024-09-01' and '2024-09-30'
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by trx_date
2024-11-26 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 usr_id = '5201314520'
and month(trx_time) = 9
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by trx_date
2024-11-26 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,
min(trx_amt) as min_trx_amt,
max(trx_amt) as max_trx_amt,
avg(trx_amt) as avg_trx_amt,
sum(trx_amt) as sum_trx_amt
from cmb_usr_trx_rcd
where usr_id = '5201314520'
and month(trx_time) = 9
and mch_nm = '红玫瑰按摩保健休闲'
group by date(trx_time)
order by trx_date