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提交日期 题目名称 提交代码
2024-11-05 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 distinct mch_nm,count(mch_nm) as trx_cnt from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time) in(2023,2024) group by mch_nm having count(mch_nm)>=20 ) a left join
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5211314521 and year(trx_time) in(2023,2024)) b
on a.mch_nm=b.mch_nm order by a.trx_cnt desc
2024-11-05 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
2024-11-05 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 as asshole_tried_cnt,b.mch_nm as darling_tried
from 
(select distinct mch_nm,count(mch_nm) as trx_cnt from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time) in(2023,2024) group by mch_nm having count(mch_nm)>=20 ) a left join
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5211314521 and year(trx_time) in(2023,2024)) b
on a.mch_nm=b.mch_nm order by asshole_tried_cnt desc
2024-11-05 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 as asshole_tried_cnt,b.mch_nm as darling_tried
from 
(select distinct mch_nm,count(mch_nm) as trx_cnt from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time) in(2023,2024) group by mch_nm having count(mch_nm)>20 ) a left join
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5211314521 and year(trx_time) in(2023,2024)) b
on a.mch_nm=b.mch_nm order by asshole_tried_cnt desc
2024-11-05 表连接(1)你们难道都去过?那就试试用InnerJoin 
select a.* from 
(select distinct mch_nm 
 from cmb_usr_trx_rcd 
 where usr_id=5211314521 and year(trx_time)=2024)a 
inner join 
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024)b 
on a.mch_nm = b.mch_nm
2024-11-05 表连接(1)你们难道都去过?那就试试用InnerJoin 
select a.* from 
(select distinct mch_nm 
 from cmb_usr_trx_rcd 
 where usr_id=5211314521 and year(trx_time)=2024)a 
inner join 
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024)b 
on a.mch_nm = b.mch_nm 
order by mch_nm
2024-11-05 表连接(1)你们难道都去过?那就试试用InnerJoin 
select a.* from 
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314521 and year(trx_time)=2024)a 
inner join 
(select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024)b 
on a.mch_nm = b.mch_nm 
order by mch_nm
2024-11-05 表连接(1)你们难道都去过?那就试试用InnerJoin 
select a.mch_nm from (select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314521 and year(trx_time)=2024)a inner join (select distinct mch_nm from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024)b on a.mch_nm=b.mch_nm order by mch_nm
2024-11-05 子查询(1)玩的最嗨那天在做甚?要用Where子查询 
select usr_id,mch_nm,trx_time,trx_amt from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024 and trx_amt>=all (select trx_amt from cmb_usr_trx_rcd where usr_id=5201314520 and year(trx_time)=2024)
2024-11-04 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 usr_id=5201314520 and mch_nm like '%按摩%保健休闲%'
2024-11-04 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 wheremch_nm like '%按摩%保健休闲%'
2024-11-04 字符串与通配符(1)名称里面有特服,可以使用通配符 
select count(mch_nm) as mch_cnt from cmb_usr_trx_rcd where usr_id=5201314520 and mch_nm like '%按摩%保健休闲%'
2024-11-04 字符串与通配符(1)名称里面有特服,可以使用通配符 
select count(mch_nm) as mch_cntfrom cmb_usr_trx_rcd where usr_id=5201314520 and mch_nm='%按摩%保健休闲%'
2024-11-04 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(trx_amt) 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 1
2024-10-29 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)
from 
cmb_usr_trx_rcd
where mch_nm like '%按摩保健休闲%'
2024-10-29 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%'
2024-10-29 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)
from 
cmb_usr_trx_rcd
where mch_nm like '按摩%保健休闲%'
2024-10-29 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%'
2024-10-29 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%'
2024-10-29 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%'