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提交日期 题目名称 提交代码
2025-02-18 查询所有终点是餐饮类地点的行程记录 
SELECT r.*
FROM didi_sht_rcd r
JOIN loc_nm_ctg l ON r.end_loc = l.loc_nm
WHERE l.loc_ctg = '餐饮'
ORDER BY r.start_tm ASC;
2025-02-18 不分类别的最火直播间 
select 
	t2.live_id,t2.live_nm,count(1) as enter_cnt
from ks_live_t1 t1
join ks_live_t2 t2
on t1.live_id = t2.live_id
where
	enter_time between '2021-09-12 23:00:00' and '2021-09-12 23:59:59'
group by
	t1.live_id,t2.live_nm
order by
	enter_cnt desc
limit 5
2025-02-18 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;
2025-02-18 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%'
2025-02-17 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
2025-02-17 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
2025-02-17 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
2025-02-17 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'
2025-02-17 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
date(trx_time) between '2023-01-01' and '2024-06-30'
group by
	trx_amt
order by
	avg_trx_per_user desc
limit 5
2025-02-17 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) in (1, 2, 3, 4, 5, 6, 7) 
group by
	trx_amt
order by
	trx_cnt desc
limit 5
2025-02-17 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
year(trx_time) = '2024'
and
month(trx_time) = '9'
group by
	trx_date
order by
	trx_date asc
2025-02-17 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
year(trx_time) = '2024'
and
month(trx_time) = '9'
group by
	trx_date
order by
	trx_date desc
2025-02-17 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
2025-02-17 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
year(trx_time) = '2024'
and
month(trx_time) = '9'
group by
    date(trx_time) 
order by
    trx_date;
2025-02-17 分组与聚合函数(2)擦边营收怎么样,聚合函数可看出 
select 
	max(trx_amt),min(trx_amt),avg(trx_amt),sum(trx_amt)
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) = '9'
group by
	day(trx_time)
2025-02-17 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
2025-02-17 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
2025-02-17 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 24)
    and usr_id = '5201314520' 
order by trx_time
2025-02-17 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 1 and 5 
	or hour(trx_time) between 22 and 24)
    and usr_id = '5201314520' 
order by trx_time
2025-02-17 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 1 and 5 
	or hour(trx_time) between 22 and 24
    and usr_id = '5201314520' 
order by trx_time