How to get sum of concatenated rows in access - sql

Question

my datatable is this:
and the table i need is :
i used a function to concatenate rows in ms access as follows:
Public Function GetList(SQL As String _
, Optional ColumnDelimeter As String = ", " _
, Optional RowDelimeter As String = vbCrLf) As String
'PURPOSE: to return a combined string from the passed query
'ARGS:
' 1. SQL is a valid Select statement
' 2. ColumnDelimiter is the character(s) that separate each column
' 3. RowDelimiter is the character(s) that separate each row
'RETURN VAL: Concatenated list
'DESIGN NOTES:
'EXAMPLE CALL: =GetList("Select Col1,Col2 From Table1 Where Table1.Key = " & OuterTable.Key)
Const PROCNAME = "GetList"
Const adClipString = 2
Dim oConn As ADODB.Connection
Dim oRS As ADODB.Recordset
Dim sResult As String
On Error GoTo ProcErr
Set oConn = CurrentProject.Connection
Set oRS = oConn.Execute(SQL)
sResult = oRS.GetString(adClipString, -1, ColumnDelimeter, RowDelimeter)
If Right(sResult, Len(RowDelimeter)) = RowDelimeter Then
sResult = Mid$(sResult, 1, Len(sResult) - Len(RowDelimeter))
End If
GetList = sResult
oRS.Close
oConn.Close
CleanUp:
Set oRS = Nothing
Set oConn = Nothing
Exit Function
ProcErr:
' insert error handler
Resume CleanUp
End Function
and the query i used is:
SELECT OB.Operation_Type, OB.Machine_Type, OB.Attatchment, GetList("Select Operation_Name From OB As T1 Where T1.Operation_Type = """ & [ob].[Operation_Type] & """ and T1.Machine_Type = """ & [ob].[Machine_Type] & """ and T1.Attatchment = """ & [ob].[Attatchment] & """ ",""," + ") AS Expr1
FROM ob
GROUP BY ob.Operation_Type, Machine_Type, Attatchment;
that is giving me result
i need sum of SAM of concatenated rows.
please help
Thank You

Answer 1

If SAM is a number field, you can simply add a SUM() aggregate. Unless I'm missing something.
SELECT OB.Operation_Type, OB.Machine_Type, OB.Attatchment,
GetList("Select Operation_Name From OB As T1 Where T1.Operation_Type = """ & [ob].[Operation_Type] & """ and T1.Machine_Type = """ & [ob].[Machine_Type] & """ and T1.Attatchment = """ & [ob].[Attatchment] & """ ",""," + ") AS Expr1,
SUM([SAM]) AS SumSAM
FROM ob
GROUP BY ob.Operation_Type, Machine_Type, Attatchment;