Concatination of columns of two tables

Dim cmdText As String = "Select EDescription, SUM(EQuantity) AS EQuantity, " & _
        "SUM(EAmount) AS EAmount, TDescription,SUM(TQuantity) AS TQuantity, SUM(TAmount) AS TAmount " & _
        "From " & _
        "(" & _
        "SELECT de.Description AS EDescription, de.Quantity AS EQuantity, de.Amount AS EAmount," & _
        "0 AS TDescription, 0 AS TQuantity,0 AS TAmount FROM DailyExpenses de " & _
        "WHERE de.EDate Between @START and @END " & _
        "UNION ALL " & _
        "SELECT 0 AS EDescription, 0 AS EQuantity, 0 AS EAmount, " & _
        "dt.Description AS TDescription,dt.Quantity AS TQuantity,dt.Amount AS TAmount FROM DailyTransaction dt " & _
        "WHERE dt.DTDate Between @START and @END " & _
        ") a " & _
        "GROUP BY EDescription,TDescription"