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Alpha Five and indexes

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    #1

    Alpha Five and indexes

    As you build an application Alpha creates indexes for you. When an application is finished, due to changes in design along the way there may be indexes that are not necessary. Is there a way to determine which indexes may be deleted?
    Tags: None
    #2
    Re: Alpha Five and indexes

    a good list of the indexes and why they are there would really help.
    Dave Mason
    [email protected]
    Skype is dave.mason46

    Comment

      #3
      Re: Alpha Five and indexes

      Hi Dave,
      I think why they are there is the part he is trying to figure out!
      Robin

      Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

      Comment

        #4
        Re: Alpha Five and indexes

        Hi Robin,

        Kinda figured that.

        To the best of my knowledge, there is no way of knowing why someone made the index except memory or a list.

        I do not make a list of indexes, but do not have many and trust my decision of the past that there was a valid reason for the index. I have looked and wondered why I did it though.

        Alpha makes 1 index per table(not always) as far as I know. Haven't seen or heard of more than that. I would delete and index that I did not make myself.
        Dave Mason
        [email protected]
        Skype is dave.mason46

        Comment

          #5
          Re: Alpha Five and indexes

          I referring primarily where Alpha has created the Index. Alpha depending on your design will create more than one index per table. I have one table where Alpha has created 19 indexes already.

          Comment

            #6
            Re: Alpha Five and indexes

            Hi Barry,
            I will bet that is because you have defined some unique lookups? As in lookup previous...
            Robin

            Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

            Comment

              #7
              Re: Alpha Five and indexes

              That table is part of a set where I link to the same table a few times with different filter expressions.

              Comment

                #8
                Re: Alpha Five and indexes

                Delete the indexes & alpha will rebuild the ones it needs.

                Allen

                Comment

                  #9
                  Re: Alpha Five and indexes

                  That's what I was hoping for.

                  Comment

                    #10
                    Re: Alpha Five and indexes

                    Originally posted by barry685 View Post
                    That's what I was hoping for.
                    But then what happens to the ones you created??

                    This is why all the index names I create (vs. those created by A5) end with an underscore. (Some people think my naming conventions are ridiculous but I find them very useful because of things like this.) When done developing/debugging/editing the app, I can delete all but the "....._" indexes then open each table, set, form, and report (all of which are done automatically using the "Open Layouts Once" utility in my AIMS_Grab_bag) to rebuild the ones Alpha needs to create.

                    If I want/need further verification that all my own indexes are still being used, I run my AIMS_App_Analyzer to get a list of where all index names are used. Those that aren't used will be shown as "No reference found". This is why all my utilities were created - because I wanted them to make my own development easier and more accurate. If I had created them just to sell them for profit, I can guarantee they would cost a LOT more than $19.

                    EDIT: FYI - The indexes created by A5 can't reliably be checked using the AIMS_App_Analyzer because many of them are not referenced in any code. Many of them are only required for things like sets, groups in reports, previous value lookups, etc. and will turn up as "No reference found" even though they are still needed. This is why removing them and letting A5 rebuild them works best for "cleanup". However, any index that you create should be referenced somewhere in the code and/or expressions which means the AIMS_App_Analyzer can find it.
                    Last edited by CALocklin; 01-23-2012, 12:59 AM.

                    Comment

                      #11
                      Re: Alpha Five and indexes

                      Thanks Cal

                      Comment

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