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提交日期 题目名称 提交代码
2025-01-25 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(mch_nm) as trx_cnt
,min(trx_time) as first_time
from 
cmb_usr_trx_rcd 
where trx_amt >= 288 and usr_id = 5201314520
group by 2
order by trx_cnt desc
2025-01-25 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
select
mch_nm
,sum(trx_amt) as trx_sum
,count(mch_nm) as trx_cnt
,min(trx_time) as first_time
from 
cmb_usr_trx_rcd 
where trx_amt >= 288 and usr_id = 5201314520
group by 1
order by trx_cnt desc
2025-01-25 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
select
mch_nm
,sum(trx_amt)
,min(trx_time)
from 
cmb_usr_trx_rcd 
where trx_amt >= 288 and usr_id = 5201314520
group by 1
2025-01-21 分组与聚合函数(5)想知道何时成瘾,用Max Or Min? 
select
usr_id
,trx_time as fist_time
,mch_nm
from cmb_usr_trx_rcd 
where usr_id = 5201314520
and mch_nm = "红玫瑰按摩保健休闲"
order by trx_time
limit 1
2025-01-21 分组与聚合函数(5)想知道何时成瘾,用Max Or Min? 
select
usr_id
,mch_nm
,trx_time as fist_time
from cmb_usr_trx_rcd 
where usr_id = 5201314520
and mch_nm = "红玫瑰按摩保健休闲"
order by trx_time
limit 1
2025-01-21 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)
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
limit 5;
2025-01-20 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 month(trx_time) = 9 and year(trx_time) = 2024 and mch_nm = "红玫瑰按摩保健休闲"
group by trx_date
order by trx_date
2025-01-20 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
,round(avg(trx_amt),2) AS avg_trx_amt
,sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where month(trx_time) = 9 and year(trx_time) = 2024 and mch_nm = "红玫瑰按摩保健休闲"
group by trx_date
order by trx_date
2025-01-20 分组与聚合函数(2)擦边营收怎么样,聚合函数可看出 
select 
	trx_time
,max(trx_amt) as max
,min(trx_amt) as min
,round(avg(trx_amt),2) AS avg
,sum(trx_amt) as sum
from cmb_usr_trx_rcd
where month(trx_time) = 9 and year(trx_time) = 2024 and mch_nm = "红玫瑰按摩保健休闲"
group by trx_time
order by trx_time
2025-01-20 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 usr_id = 5201314520 and year(trx_time) = 2024 and month(trx_time) = 9 and hour(trx_time)between 1 and 5
order by trx_time
2025-01-20 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 usr_id = 5201314520 and year(trx_time) = 2024 and month(trx_time) = 9 and hour(trx_time)between 1 and 5
2025-01-20 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 usr_id = 5201314520 and year(trx_time) = 2024 and month(trx_time) = 9 and hour(trx_time)between 1 and 6
2025-01-20 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 usr_id = 5201314520 and year(trx_time) = 2024 and month(trx_time) = 9
order by trx_time
2025-01-20 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 usr_id = 5201314520 and month(trx_time) = 9
2025-01-20 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 usr_id = 5201314520
limit 5;
2025-01-20 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 
limit 5;
2025-01-13 不分类别的最火直播间 
select distinct
	k1.live_id
,live_nm
,count(usr_id) as con_id
from ks_live_t1 as k1
left join ks_live_t2 as k2
on k1.live_id = k2.live_id
where substring(enter_time,12,2) = "23"
group by 1,2
order by con_id desc
limit 5
2025-01-13 不分类别的最火直播间 
select distinct
	live_id
,count(usr_id) as con_id
from ks_live_t1 as k1
where substring(enter_time,12,2) = "23"
group by live_id
order by con_id desc
limit 5