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提交日期 题目名称 提交代码
2026-08-31 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(*) 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 '2024-01-01' AND '2024-07-31')
GROUP BY trx_amt
ORDER BY trx_cnt DESC
limit 5;
2026-08-31 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(1) 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 '2024-01-01' AND '2024-07-31')
GROUP BY trx_amt
ORDER BY trx_cnt DESC
limit 5;
2026-08-31 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),
min(trx_amt),
avg(trx_amt),
sum(trx_amt)
from cmb_usr_trx_rcd
WHERE (date(trx_time) BETWEEN '2024-09-01' AND '2024-09-30')
		AND mch_nm = '红玫瑰按摩保健休闲'
GROUP BY date(trx_time)
ORDER BY trx_date
2026-08-31 分组与聚合函数（2）擦边营收怎么样，聚合函数可看出  
select 
		max(trx_amt),
min(trx_amt),
avg(trx_amt),
sum(trx_amt)
from cmb_usr_trx_rcd
WHERE date(trx_time) BETWEEN '2024-09-01' AND '2024-09-30'
2026-08-31 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 usr_id = '5201314520' AND (date (trx_time) BETWEEN '2024-01-01' AND '2024-12-31')
GROUP BY mch_nm
ORDER BY sum_trx_amt DESC
2026-08-31 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 usr_id = '5201314520'
GROUP BY mch_nm
ORDER BY sum_trx_amt DESC
2026-08-31 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
GROUP BY mch_nm
ORDER BY sum_trx_amt DESC
2026-08-31 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
GROUP BY mch_nm
2026-08-31 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) BETWEEN 0 AND 5) OR HOUR(trx_time) >= 22)
ORDER BY trx_time
2026-08-31 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) BETWEEN 0 AND 5) OR HOUR(trx_time) >= 22
ORDER BY trx_time
2026-08-31 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 AND 5)
ORDER BY trx_time
2026-08-19 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' ANDdate(trx_time) >= '2024-09-01' AND date(trx_time) <= '2024-09-30'
ORDER BY trx_time
2026-08-19 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' ANDtrx_time >= '2024-09-01' AND trx_time <= '2024-09-30'
ORDER BY trx_time
2026-08-19 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 ANDtrx_time >= '2024-09-01' AND trx_time <= '2024-09-30'
ORDER BY trx_time
2026-08-19 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 ANDtrx_time >= '2024-09-01' AND trx_time <= '2024-09-30'
2026-08-19 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 ANDtrx_time >= '2024-09-01' AND trx_time <= '2024-09-30'
 limit 5