Calculating grand totals from group totals in Reporting Services

Answer 1

Unfortunately I'm away from my reporting development box at the moment but it's either:
=(sum(Fields!Column1 + sum(Fields!Column2))
OR
=SUM(sum(Fields!Column1) + sum(Fields!Column2))

I'm pretty sure it's the first of the 2.

Answer 2

You just need to add the SUM() function in the table footer which is the outer scope of both groups and will sum them all together. If you are summing on a condition, you may need to put that in there also.

Answer 3

Reporting Services (2005, maybe 2008, too) don't support aggregates of aggregates directly.

Use a custom report assembly, code references and named objects (Report Properties, References) that allow you to aggregate the values yourself.

Your code could look like this:

Public Sub New()

    m_valueTable = New DataTable(tableName:="DoubleValueList")

    'Type reference to System.Double
    Dim doubleType = Type.GetType(typeName:="System.Double")

    ' Add a single Double column to hold values
    m_valueTable.Columns.Add(columnName:="Value", type:=doubleType)

    ' Add aggregation column
    m_sumColumn = m_valueTable.Columns.Add(columnName:="Sum", type:=doubleType, expression:="Sum(Value)")
End Sub
Public Function Aggregate(ByVal value As Double) As Double

    ' Appends a row using a 1-element object array. 
    ' If there will be more than 1 column, more values need to be supplied respectively.
    m_valueTable.Rows.Add(value)

    Aggregate = value
End Function
Public ReadOnly Property Sum() As Double
    Get

        If 0 = m_valueTable.Rows.Count Then
            Sum = 0
        Else
            Sum = CDbl(m_valueTable.Rows(0)(m_sumColumn))
        End If
    End Get
End Property

Name you reference for example DoubleAggregator. Then replace the group expressions with "Code.DoubleAggregator.Aggregate(Avg(Fields!Column2.Value))" and the expression for Total with "Code.DoubleAggregator.Sum()".

Answer 4

I am not able to achieve these group totals....The totals are coming only for the last page not for the first one.

I'm using the custom sample code given above...Any other solution to achieve this???