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Index Filter Expression Help

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  • Index Filter Expression Help

    I have 2 browses, Accountbwse includes the Account info and Acctitembwse includes all account items. They are linked by account number. When I click on an account number in Accountbwse, all account items associated with the account number appear in the Accitembwse.

    I have a field called CALCPAYEE (in the Acctitembwse) which has an index called Idxpayee which is a DBSUM expression. The CALCPAYEE field includes all account numbers rather than the account number which has focus in the browse. Example: If I click on the word NAPA in the PAYEE column, the CALCPAYEE field shows the total amount for all records where PAYEE = NAPA but it includes [ALL] account numbers rather than the account number which shows in the Acctitembwse.

    I thought of including a Filter expression for the index but need a bit of help on writing the correct expression.
    (Adding the account number field to the index expression doesn't work) I'm thinking it should be something like: Account_Numbr=()but that isn't correct. (I've searched the message board and the manuals)

    What expression will keep the focus on the current account number? (Acctitembwse will have only one account number in focus at any given time)



    Thanks,

    kenn
    TYVM :) kenn

    Knowing what you can achieve will not become reality until you imagine and explore.

  • #2
    RE: Index Filter Expression Help

    If I understand your question you want to click on an account in the parent ACCOUNTBWSE and see the linked items in ACCTITEMBWSE.

    Then, when you select a record in the ACCTITEMBWSE you want the total of items that both match the PAYEE and the ACCOUNT. What you are getting is ALL records in ACCTITEMBWSE that match PAYEE, regardless of account.

    The calc expression
    tablesum("ACCTITEMBWSE","Payee ='+ACCTITEMBWSE->PAYEE+"'.and. ACCOUNT ='"+ACCTITEMBWSE->ACCOUNT+"'","AMOUNT")
    should be close. Put this in the expression builder and see what you get. I struggle to get the filter right, and some times creat a seperate calc field FILTER to hols the filter. In which case I work on the expression builder using
    "Payee ='+ACCTITEMBWSE->PAYEE+"'.and. ACCOUNT ='+ACCTITEMBWSE->ACCOUNT+"'"
    until I get
    Payee = 'NAPA' .and. ACCOUNT = 'deposit'
    then use
    tablesum("ACCTITEMBWSE",Calc->FILTER,"AMOUNT")

    Comment


    • #3
      RE: Index Filter Expression Help

      Ken, I'm a little confused. Can you clarify? In your second paragraph what do you mean when you say "the CALCPAYEE field shows the total amount for all records where PAYEE = NAPA but it includes [ALL] account numbers rather than the account number which shows in the Acctitembwse"? It sounds like CALCPAYEE is returning a total for NAPA. If so, how is the same CALCPAYEE field showing [ALL] account numbers? Do you mean its calculating all account numbers instead of just NAPA? Is the CALCPAYEE field a calculated table field or is it a form calculation?
      Jeff

      Comment


      • #4
        RE: Index Filter Expression Help

        Jeff,

        Stephen has the understanding. When I click on NAPA, I get the total amount for all records which = NAPA, regardless of the account number. Only the account number for one account shows.

        I need to try what Stephen is suggesting and any insight you have is appreciated as well.

        Thanks

        kenn
        TYVM :) kenn

        Knowing what you can achieve will not become reality until you imagine and explore.

        Comment


        • #5
          RE: Index Filter Expression Help

          Stephen,

          I dropped this in the expression of the calc field:

          tablesum("ACCTITEMS.DBF","Payee ='+ACCTITEMS->PAYEE+' ".and. "ACCOUNTS->ACCOUNT_NUMBR ='+ACCTITEMS->ACCOUNT_NUMBR"'","AMOUNT")

          The names I used referred to in the post are the browse names but I figured you meant them to be table names so made the switch. I get the message Expected Value. I must confess I donít know what the + and the ' mean. I tried to follow the manual's example of Tablesum() but the example is not as complex.

          What does the + and the ' mean in the sequence of things?

          Thanks,

          kenn
          TYVM :) kenn

          Knowing what you can achieve will not become reality until you imagine and explore.

          Comment


          • #6
            RE: Index Filter Expression Help

            There's an excellent article on the learning A5 forum that discusses filter and query syntax. I only use the '+ in my query situations.

            Comment


            • #7
              RE: Index Filter Expression Help

              OK. Tablesum accepts a filter as a character expression. Whatever the format of data (logical, numeric, date) it has to be a text format as it get passed to the tablesum function.

              This text expression then gets evaluated into a logical expression to make the filter work. All filters are logical expressions.

              The + is simply a text concatenation tool as you would use in any expression.

              What is a little trickier is that to create a logical expression we need to enclose text inside speech marks.

              User = Ken will evaluate to two objects, User and Ken
              User = 'Ken' will look for Ken as a match to the object User.

              I want to end up with
              PAYEE = 'Napa' so I use
              "Payee '"
              plus
              FIELD->PAYEE
              plus
              "'"
              to get there...

              Hope this makes sense. I struggle with the +'s and 's to get it right, hence the calc field filter.

              Try this one...
              tablesum("ACCTITEMS.DBF","Payee ='+ACCTITEMS->PAYEE+"'.and. ACCOUNT_NUMBR ='"+ACCOUNTS->ACCOUNT_NUMBR+"'","AMOUNT")

              Comment

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