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提交日期 题目名称 提交代码
2024-12-26 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 mch_nm ='红玫瑰按摩保健休闲'
and date(trx_time)between '2024-1-01'and '2024-7-31'
group by 1
order by 2 desc
limit 5
2024-12-26 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 mch_nm = '红玫瑰按摩保健休闲'
and date(trx_time) between '2024-9-01' and '2024-9-30'
group by 1
order by 1
2024-12-26 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 1
order by sum_trx_amt desc
2024-12-26 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 usr_id ='5201314520'
and date(trx_time) between '2024-09-01' and '2024-09-30'
and (
(hour(trx_time) >=22) or (hour(trx_time) between 0 and 5)
)
order by trx_time
2024-12-26 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 usr_id ='5201314520'
and date(trx_time) between '2024-09-01' and '2024-09-30'
and (
(hour(trx_time) >=22) or (hour(trx_time)<5)
)
order by trx_time
2024-12-26 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) >= 22) 
        OR
        (hour(trx_time) between 0 and 5) 
    )
    and usr_id = '5201314520' 
order by trx_time
2024-12-24 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
date(trx_time) between '2024-9-01' and '2024-9-30' 
and hour(trx_time) between 1 and 5 
order by trx_time
2024-12-24 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
date(trx_time) between '2024-9-01' and '2024-9-30'
order by trx_time
2024-12-23 查询所有起点或终点为“海底捞西丽店”的行程记录 
SELECT *
FROM didi_sht_rcd
WHERE start_loc = '海底捞西丽店' or end_loc = '海底捞西丽店'
ORDER BY start_tm ASC;
2024-12-23 城市平均最高气温 
select city,cast(avg(tmp_h) as decimal(4,2)) as avg_tmp_h
from weather_rcd_china
where year(dt) = 2021
group by 1
order by 2 desc
2024-12-23 城市平均最高气温 
select city,round(avg(tmp_h),2)
from weather_rcd_china
where year(dt) = 2021
group by 1
order by 2 desc
2024-12-23 城市平均最高气温 
select city,cast(avg(tmp_h)as decimal(4,2)) as avg_tmp_h
from weather_rcd_china
where year(dt) = 2011
group by 1
order by 2 desc
2024-12-23 城市平均最高气温 
select city,round(avg(tmp_h),2)
from weather_rcd_china
where year(dt)=2011
group by city
order by 2 desc
2024-12-23 查询所有起点或终点为“海底捞西丽店”的行程记录 
SELECT *
FROM didi_sht_rcd
WHERE start_loc = '海底捞西丽店'
ORDER BY start_tm ASC;
2024-12-23 城市平均最高气温 
select 
    city
    , cast(avg(tmp_h) as decimal(4,2))  as avg_tmp_h
from 
    weather_rcd_china 
where 
    year(dt)=2021
group by 
    city 
order by 
    2 
desc
2024-12-23 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'  
    or usr_id = '5201314520'  
order by
    trx_time
2024-12-23 查询所有起点或终点为“海底捞西丽店”的行程记录 
select *
from didi_sht_rcd
where start_loc = '海底捞西丽店'
order by start_tm asc;
2024-12-23 查询所有起点或终点为“海底捞西丽店”的行程记录 
select *
from didi_sht_rcd
where start_loc = '海底捞西丽店'
order by start_tm asc
2024-12-23 查询所有起点或终点为“海底捞西丽店”的行程记录 
select *
from didi_sht_rcd
where start_loc = '海底捞西丽店'