Question

我的表格中有三列： Amount，OrderNumber，Customerid

对于每个customerid，将分别有ordernumber和amount。现在，我需要显示customerid，Ordernumber和Amount（每个客户id的总金额）。

custid  srcnumber   amount
112     4344        20
112     7678        10
112     8766        30
34      6577        15
34      4566        5

预期：

custid  srcnumber   amount
112     4344        60
112     7678        60
112     8766        60
34      6577        20
34      4566        20

Answer 1

使用sum() over (partition by ..)分析函数来总结每行的数量：

 select Customerid as custid,
        OrderNumber as srcnumber,
        sum(amount) over ( partition by Customerid ) as amount
   from tab
  order by custid desc

Demo

在oracle中对列进行分组

1 个答案: