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评论日期 题目名称 评论内容 站长评论
2024-11-15 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
排序,我没看出来是哪里的错误
啥也没说
2024-11-14 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) trx_amt,count(1) trx_cnt,min(trx_time) first_time 
from cmb_usr_trx_rcd 
where usr_id='5201314520' and trx_amt>=288
group by usr_id,mch_nm
order by trx_amt desc
大佬你看看这个呢
题目要求按照什么排序?
2024-11-14 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) trx_amt,count(1) trx_cnt,min(trx_time) first_time 
from cmb_usr_trx_rcd 
where usr_id='5201314520' and trx_amt>=288
group by usr_id,mch_nm
order by trx_amt desc
大佬你看看这个呢
啥也没说
2024-11-13 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) trx_amt,
       count(1) trx_cnt,
       min(trx_time) frist_time 
from cmb_usr_trx_rcd 
where trx_amt>=288 and usr_id='5201314520'
group by usr_id,mch_nm
order by trx_cnt desc
各位这个哪里错了提交答案就是告诉我错误的,运行倒是没有错误
first 不是frist 参考上一条评论

提交记录

提交日期 题目名称 提交代码
2024-11-15 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'
2024-11-15 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%' or mch_nm like '%保健%' or mch_nm like '%保健%'
2024-11-15 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) trx_amt,count(1) trx_cnt,min(trx_time) first_time 
from cmb_usr_trx_rcd 
where usr_id='5201314520' and trx_amt>=288
group by usr_id,mch_nm
order by trx_amt desc
2024-11-14 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 usr_id, mch_nm
order by 4 desc
2024-11-14 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) trx_amt,count(1) trx_cnt,min(trx_time) first_time 
from cmb_usr_trx_rcd 
where usr_id=5201314520 and mch_nm>=288
group by usr_id,mch_nm
order by trx_amt
2024-11-14 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) trx_amt,count(*),min(trx_time) from cmb_usr_trx_rcd 
where usr_id=5201314520 and mch_nm>=288
group by usr_id,mch_nm
order by trx_amt
limit 5
2024-11-13 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) trx_amt,
 count(1) trx_cnt,
 min(trx_time) frist_time 
from cmb_usr_trx_rcd 
where trx_amt>=288 and usr_id='5201314520'
group by usr_id,mch_nm
order by trx_cnt desc
2024-11-13 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) trx_amt,
 count(1) trx_cnt,
 min(trx_time) frist_time 
from cmb_usr_trx_rcd 
where trx_amt>=288 and usr_id='5201314520'
group by usr_id,mch_nm
order by trx_cnt desc
limit 5
2024-11-13 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
    mch_nm = '红玫瑰按摩保健休闲'
    and usr_id = '5201314520'
group by
    usr_id, mch_nm;
2024-11-13 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) frist_time,mch_nm from cmb_usr_trx_rcd 
where usr_id='5201314520' and mch_nm='红玫瑰按摩保健休闲'
group by usr_id,mch_nm
2024-11-13 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) first_time,mch_nm from cmb_usr_trx_rcd where mch_nm = '红玫瑰按摩保健休闲'
and usr_id = '5201314520'
group by usr_id, mch_nm;
2024-11-13 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) frist_time,mch_nm from cmb_usr_trx_rcd where mch_nm = '红玫瑰按摩保健休闲'
and usr_id = '5201314520'
group by usr_id, mch_nm;
2024-11-13 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) frist_time,mch_nm from cmb_usr_trx_rcd where mch_nm = '红玫瑰按摩保健休闲'
and usr_id = '5201314520'
group by usr_id,mch_nm;
2024-11-13 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) frist_time,mch_nm from cmb_usr_trx_rcd where mch_nm = '红玫瑰按摩保健休闲'
and usr_id = '5201314520'
group by usr_id,mch_nm
2024-11-13 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) frist_time,mch_nm from cmb_usr_trx_rcd where usr_id='5201314520'
and mch_nm='红玫瑰按摩保健休闲'
group by usr_id,mch_nm
2024-11-13 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 ((year(trx_time) = 2023 and month(trx_time) between 1 and 12) 
    or (year(trx_time) = 2024 and month(trx_time) between 1 and 6) )
group by
    trx_amt 
order by
    avg_trx_per_user desc
limit 5;
2024-11-13 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 ((year(trx_time) = 2023 and month(trx_time) between 1 and 12) 
    or (year(trx_time) = 2024 and month(trx_time) between 1 and 6) )
group by
    trx_amt 
order by
    avg_trx_per_user desc 
limit 5;
2024-11-13 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 (year(trx_time) = 2023 and month(trx_time) between 1 and 12) 
    and (year(trx_time) = 2024 and month(trx_time) between 1 and 6) 
group by
    trx_amt 
order by
    avg_trx_per_user desc 
limit 5;
2024-11-13 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 (year(trx_time) = 2023 and month(trx_time) between 1 and 12) 
    or (year(trx_time) = 2024 and month(trx_time) between 1 and 6) 
group by
    trx_amt 
order by
    avg_trx_per_user desc 
limit 5;
2024-11-13 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) trx_cnt from cmb_usr_trx_rcd 
where mch_nm='红玫瑰按摩保健休闲' and
date(trx_time) between '2024-01-01' and '2024-07-31'
group by trx_amt
order by trx_cnt desc
limit 5