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Total() function in a form???

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  • Total() function in a form???

    I'm trying to create a calculated field in a form to add up all of a students class hours based on an ID number. The form I created have has an embedded browse that shows all the students classes and hours. How can I create a field to add up all the hours ONLY for the student/ID Number who has focus???

    I've tried to use the Total() function but its giving me the total for the entire table, my problem is getting it to only count the hours for the ID that has focus. Please Help!

  • #2
    Re: Total() function in a form???

    Hi Ivan,

    You can create view to handle that in the database side and use that in the component.
    Here is something similar I did and re-use that all over the No Interest Loan Application.

        LoansFK, SUM(VoucherAmount) AS TotalDisbursedAmount
    GROUP BY LoansFK, Status
    HAVING  (Status = 'Printed')
    You can have code like that to create the actual view:
    CREATE VIEW [dbo].[vStudentsTrans]
        StudentPK, SUM(Hours) AS TotalHours
    GROUP BY StudentPK
    My view had more calculations and the benefit is that the back end calculations is always faster from the front end.
    You can use just a grid and then use the Detail View to show each student record in details.


    The Farber Consulting Group, Inc.

    Web site:
    MS SQL Blog:
    Convert Ms Access to Web
    MS SQL Remote DBA
    Alpha Five Development
    No Interest Loans Application
    Last edited by DoronF; 02-18-2014, 12:45 PM.


    • #3
      Re: Total() function in a form???

      Ivan, is this a desktop app or web based?


      • #4
        Re: Total() function in a form???

        Currently desktop, but will be going web based in coming months


        • #5
          Re: Total() function in a form???


          Check the Invoice form in the AlphaSports sample database that ships with Alpha Five. The "Total" calc field on that form will be of interest, I think.


          • #6
            Re: Total() function in a form???

            Most use tablesum() or dbsum() anywhere such a total is needed (outside a report).
            There can be only one.


            • #7
              Re: Total() function in a form???

              Thank you Stan, Once again you saved my life...


              • #8
                Re: Total() function in a form???

                Im currently using this:

                TABLESUM("courses.DBF", "ssn = '" + ssn + "' ", "Completed_hrs")

                Which is working perfectly for adding up all the hours a student has, however, is there a way I can make it not count the completed hours for a specified class such as class "ABL"? I have multiple classes that I would like it to ignore the count on, is there an expression for that or do I need to rethink my table structure?


                • #9
                  Re: Total() function in a form???

                  TABLESUM("courses.DBF", "ssn = '" + ssn + "' " + ".AND. Class<>ABL", "Completed_hrs")


                  • #10
                    Re: Total() function in a form???

                    I entered the following

                    TABLESUM("courses.DBF", "ssn = ' " + ssn + " ' " + ".AND. Course_Name<>ABL", "Completed_hrs")

                    however I'm getting <invalid or incomplete expression>


                    • #11
                      Re: Total() function in a form???

                      Additionally, I'm trying to use/come up with a way to have it add all the hours a student has, while excluding certain classes and also making sure that it does not count duplicate classes (a class that a student has taken repeatedly).

                      I really need to find something to sharpen my knowledge when it comes to writing expessions,

                      Thanks in advance for all your help.


                      • #12
                        Re: Total() function in a form???

                        Originally posted by David Boomer View Post
                        TABLESUM("courses.DBF", "ssn = '" + ssn + "' " + ".AND. Class<>ABL", "Completed_hrs")
                        looking at that - ABL should be within quotes

                        TABLESUM("courses.DBF", "ssn = '" + ssn + "' " + ".AND. Class<>'ABL'".... should work


                        • #13
                          Re: Total() function in a form???

                          Which can be compressed to

                          TABLESUM("courses.DBF", "ssn = '" + ssn + "' .AND. Class<>'ABL'", "Completed_hrs")
                          There can be only one.


                          • #14
                            Re: Total() function in a form???

                            So I typed this and all works fine:

                            TABLESUM("courses.dbf", "ssn=' "+ssn+" ' .and. Course_Name<>'Mandatory Orientation' ", "Completed_hrs")

                            but I need to exclude about four courses, so wrote the following:

                            TABLESUM("courses.DBF", "(ssn = '" + ssn + "') .and. (Course_name<>'Mandatory Orientation' .or. Course_Name<>'Sponsored Mandatory Orientation' .or. Course_Name<>'Sponsored Mandatory Orientation (lcm)' .or. Course_Name<>'Sponsored Mandatory Orientation (lif)') ", "Completed_hrs")

                            and this expression does not produce the result I would like, Im checking a student that only has the Course "Mandatory Orientation" and when I use the first expression above his hours come out to zero which is correct. But when I use the second expression above, his hours come out to 40 which is not what im looking for.

                            What am I doing wrong?


                            • #15
                              Re: Total() function in a form???

                              TABLESUM("courses.DBF", "ssn = '" + ssn + "' .and. Course_name<>'Mandatory Orientation' .and. Course_Name<>'Sponsored Mandatory Orientation' .and. Course_Name<>'Sponsored Mandatory Orientation (lcm)' .and. Course_Name<>'Sponsored Mandatory Orientation (lif)' ", "Completed_hrs")


                              TABLESUM("courses.DBF", "ssn = '" + ssn + "' .and. Course_name != 'Mandatory Orientation' .and. Course_Name != 'Sponsored Mandatory Orientation' .and. Course_Name != 'Sponsored Mandatory Orientation (lcm)' .and. Course_Name != 'Sponsored Mandatory Orientation (lif)' ", "Completed_hrs")

                              or, guessing here

                              TABLESUM("courses.DBF", "ssn = '" + ssn + "' .and. ('Mandatory' !$ Course_Name)", "Completed_hrs")
                              Last edited by Stan Mathews; 03-27-2014, 10:55 AM.
                              There can be only one.