想要计算每个用户的平均价值

Question

我有以下数据

ID           Difference in days between 2 consecutive orders
abc.         2
abc.         3
abc.         7
xyz.         4
xyz.         5

我希望结果为

ID .      Avg time difference between 2 orders
abc.      3(=12/4)
xyz.      4.5(=(4+5)/2

Answer 1

您可以使用AVG和分组依据

select  id, avg(Difference ) 
from my_table  
group by id