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Nested Tables

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    #1

    Nested Tables

    I have had Alpha versions going way back. I have never solved a problem in any of them with nested tables. My main use is a libary catologing system. It has a lookup table for authors. Things will work fine until I have to have a second lookup of information to post to the Authors table before posting the info. to my main table. After that I have to close the table I am using and reopen it. My lookups do not work when trying to enter the second record. Does anyone know what may be wrong?
    Tags: None
    #2
    RE: Nested Tables

    Does the second lookup call the same table that was opened initially?

    You might check the table lookup field rule in your primary table to make certain that the lookup is configured to permit the user to add records to the lookup table.

    -- tom

    Comment

      #3
      RE: Nested Tables

      The attachment illustrates a multilevel lookup situation.

      The primary table, Students, has a Name field. This field has a table lookup field rule, which uses the LookupNames table as its source.

      The user is permitted to add new entries to LookupNames. While doing so a table lookup rule for that table permits them to choose names from the MasterNamesList table.

      All of this can be done without closing the original data entry form.

      Unzip the attachment to a separate folder. Do not mix it with your development work.

      -- tom

      Comment

        #4
        RE: Nested Tables

        Thanks! I appreciate the help so much. I took a minute to look over the settings, indexes and such in my program and compare them to yours. I did not find anything. I did delete the stack of indexes I no longer use.

        Here is some more details about my problem. Everything seems to work when my lookup tables are small and my master table is also small. Several years ago, I could solve the problem for two master records by using a small "data entry table." Now that my lookups are large, this does not work at all. My setup is similar to the sample, but each time I enter a record into the master using the double nested tables, I have to close the master table and reopen it before my lookups will work on the master table.

        As for size, I don't know if it is the issue or not. My master table has 2200 records and is 942,000 bytes. It has three lookup tables. The first lookup table looks up the author name. It contains the name, biographical data, and a author code. This one has 1600 records and 88,000 bytes. This author code has to be looked up in a second table with 2700 records and 65,000 bytes. The setup is very similar to your sample.

        There is also a lookup table for the classification of the books according to the Dewey Decimal system. It now has 5000 records and is 510,000 bytes.

        The last lookup is a subject lookup with only 700 records and 63,000 bytes. I have basically quit using it.

        Like I said, everything works find for just a few records in each. The trouble is, this is impossible to be functional. Everything also works fine if the nested table setup does not have to look up the author code. I have fiddled with settings, but never found anything to solve the problem.

        Any more ideas?

        Comment

          #5
          RE: Nested Tables

          If you want to zip it all up and email it to me I'll take a look at it over the weekend.

          -- tom

          Comment

            #6
            RE: Nested Tables

            The tables you describe are small. I don't think size is the issue. I vote for problems with the links between your tables. Care to give a few details?

            Bill
            Bill Hanigsberg

            Comment

              #7
              RE: Nested Tables

              Hi All!

              This is embarrassing. I think I figured out the problem. I was running my tables outside my set setup. Now that I made new forms that are based on the set system, things seem to work just fine. I'll be testing things over the next week to see how things happen.
              --Clinton

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