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2025-06-12 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;
2025-06-12 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
2025-06-12 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
2025-06-12 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
2025-06-12 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 22 and 24) or (hour(trx_time) between 0 and 5)
and
usr_id="5201314520"
order by 
trx_time
2025-06-12 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)
order by trx_time
2025-06-12 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 22 and 24) or (hour(trx_time) between 0 and 5)
2025-06-12 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 date(trx_time) between "2024-09-01"and "2024-09-30"
	and hour(trx_time) between"1:00:00" and "5:00:00"
	and usr_id="5201314520"
order by trx_time
2025-06-12 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 date(trx_time) between "2024-09-01"and "2024-09-30"
	and hour(trx_time) between"1:00:00" and "6:00:00"
	and usr_id="5201314520"
order by trx_time
2025-06-12 渣男腰子可真行,端午中秋干不停 
select * from cmb_usr_trx_rcd
	where
	((date(trx_time) between "2024-06-08" and "2024-06-10") or (date(trx_time) between "2024-09-15" and "2024-09-17"))
and usr_id="5201314520"
 order by trx_time
2025-06-12 渣男腰子可真行,端午中秋干不停 
select * from cmb_usr_trx_rcd
	where
	(date(trx_time) between "2024-06-08" and "2024-06-10") or (date(trx_time) between "2024-09-15" and "2024-09-17")
and usr_id="5201314520"
 order by trx_time
2025-06-12 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 "2024-09-30"
	and usr_id="5201314520"
order by trx_time
2025-01-22 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 "2024-09-01" and "2024-09-30"
and hour(trx_time) between "1:00:00" and "6:00:00"
order by 
	trx_time
2025-01-22 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 "2024-09-01" and "2024-09-30"
and hour(trx_time) between "1:00:00" and "6:00:00"
order by 
	usr_id
2025-01-22 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 "2024-09-01" and "2024-09-30"
order by 
	trx_time
2025-01-09 销售金额前10的商品信息 
SELECT 
    goods_id, 
    SUM(order_gmv) AS total_gmv
FROM 
    order_info
WHERE 
    DATE(order_time) = '2024-09-10'
GROUP BY 
    goods_id
ORDER BY 
    total_gmv DESC
LIMIT 10;
2025-01-09 表连接(2)渣男去过我对象没去过,那就用LeftJoin 
select a.mch_nm as asshole_tried,a.trx_cnt, b.mch_nm as darling_tried from 
(select mch_nm, count(1) trx_cnt
from cmb_usr_trx_rcd
where year(trx_time) in (2023,2024) and usr_id='5201314520'
group by mch_nm
having count(1) >=20)a
left join
(select distinct mch_nm
from cmb_usr_trx_rcd
where year(trx_time) in (2023,2024) and usr_id='5211314521')b
on a.mch_nm = b.mch_nm order by 2 desc
2025-01-09 子查询(1)玩的最嗨那天在做甚?要用Where子查询 
select
    *
from
    cmb_usr_trx_rcd
where
    trx_amt = (
        select max(trx_amt)
        from cmb_usr_trx_rcd
        where usr_id = '5201314520'
          and year(trx_time) = 2024
    )
    and usr_id = '5201314520'
    and year(trx_time) = 2024;
2025-01-08 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 upper(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 upper(mch_nm) rlike '.*(按摩|保健|休闲|SPA|养生|会所).*'
group by reg_rules
order by mch_cnt desc;
2025-01-08 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%'