Question

我是SQL服务器的新手，我想在单行中组合多行，但我无法做到。任何人都可以帮助我吗？

输入：

Id      |RED    |BUY    |BSW
------------------------------------
1328        NULL    NULL    0.05
1328        NULL    0.06    NULL
1328        0.01    NULL    NULL
1328        0.05    NULL    NULL
1329        NULL    NULL    0.05
1329        NULL    0.05    NULL
1329        0.05    NULL    NULL

输出

Id         |RED    |BUY    |BSW
------------------------------------
1328        0.01    0.06    0.05
1328        0.05    NUll    NULL
1329        0.05    0.05    0.05

编辑数据以删除SUM()冲突。

Answer 1

试试这个

SELECT id, 
       Sum(Isnull(red, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id), 
       Sum(Isnull(buy, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id), 
       Sum(Isnull(bsw, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id) 
FROM Table1
GROUP  BY id

Answer 2

首先将字段默认设置更改为零而不是null，它将提高处理速度，然后尝试此

SELECT id, 
       Sum((red, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id), 
       Sum((buy, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id), 
       Sum((bsw, 0)) 
         OVER ( 
           partition BY id 
           ORDER BY id) 
GROUP  BY id

在单行中组合多行

2 个答案: