使用Aggregate值连接表

Question

我有两个表,名为Table-A和Table-B.请参考给定的表格.我想在两个表中获取"Value"列的聚合后加入这些.例如;

TABLE-A

     Name    Value1
      ABC     10
      ABC     18
      ABC     12
      DEF     5
      XYZ     15
      XYZ     16

TABLE-B

     Name    Value2
      ABC     15
      ABC     5
      XYZ     9

我的预期结果是,

结果

     Name    Value1   Value2
      ABC      40       20
      DEF      5        0
      XYZ      31       9

希望你理解我的问题.任何帮助将不胜感激.

Answer 1

试试这个 -

SELECT 
      a.Name
    , Value1 = ISNULL(Value1, 0)
    , Value2 = ISNULL(Value2, 0)
FROM (
    SELECT 
          Name
        , Value1 = SUM(Value1)
    FROM dbo.[TABLE-A]
    GROUP BY Name
) a
LEFT JOIN (
    SELECT 
          Name
        , Value2 = SUM(Value2)
    FROM dbo.[TABLE-B]
    GROUP BY Name
) b ON a.Name = b.Name