Join tables with Aggregate value

Question

I've two tables, named Table-A and Table-B. Please refer given tables . I want to join these after taking the aggregate of 'Value' column in both tables. For eg;

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

My expected result is,

Result

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

Hope you understand my question. Any help will be appreciated.

Answer 1

Try this one -

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