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2025-02-08 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 lower(mch_nm) rlike '.*(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 lower(mch_nm) rlike '.*(按摩|保健|休闲|spa|养生|会所).*'
group by reg_rules
order by mch_cnt desc;
2025-02-08 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%'
2025-02-08 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
ser_typ
2025-02-08 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(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
ser_typ
2025-02-08 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
2025-02-08 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
limit 5;
2025-02-07 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;
2025-02-07 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;
2025-02-07 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;
2025-02-07 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,
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 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;
2025-02-07 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,
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
 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;
2025-02-07 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
 usr_id= '5201314520'
 and year(trx_time)=2024
group by
mch_nm
order by
sum_trx_amt desc
2025-02-05 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%'
2025-02-05 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 frist_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
2025-02-05 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(trx_time) as frist_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
2025-02-05 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(trx_time) as frist_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 1
2025-02-05 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 4 desc
2025-01-22 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
2025-01-22 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;
2025-01-22 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;