## 基金净值:求月平均值
select month(date1) as "月份"
, min(jz) as "月最小值"
, round(avg(jz),4) as "月平均值"
, max(jz) as "月最大值"
from jjjz
where dm='660008' and year(date1)='2018'
group by month(date1)
order by 1
;
## 基金净值:求周平均值
select week(date1) as "周数"
, min(jz) as "周最小值"
, round(avg(jz),4) as "周平均值"
, max(jz) as "周最大值"
from jjjz
where dm='660008' and year(date1)='2018'
group by week(date1)
order by 1
;
python 计算平均数
# 计算平均数
def average(alist):
nsum = 0.0
for i in range(len(alist)):
nsum += alist[i]
return round(nsum / len(alist), 4)
h2database:
select WEEK(PARSEDATETIME(date1,'yyyyMMdd')) as weeks
, min(jz) as "周最小值"
, round(avg(jz),4) as "周平均值"
, max(jz) as "周最大值"
from jjjz
where dm='660008' and year(date1)='2018'
group by WEEK(PARSEDATETIME(date1,'yyyyMMdd'))
order by 1
;