Alpha Software Mobile Development Tools:   Alpha Anywhere    |   Alpha TransForm subscribe to our YouTube Channel  Follow Us on LinkedIn  Follow Us on Twitter  Follow Us on Facebook

Announcement

Collapse

The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
  • Be professional in your conduct
  • Be kind to others
  • Be constructive when giving feedback
  • Be open to new ideas and suggestions
  • Stay on topic


Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
  • Spam.
  • Vulgar language.
  • Quotes from private conversations without permission, including pricing and other sales related discussions.
  • Personal attacks, insults, or subtle put-downs.
  • Harassment, bullying, threatening, mocking, shaming, or deriding anyone.
  • Sexist, racist, homophobic, transphobic, ableist, or otherwise discriminatory jokes and language.
  • Sexually explicit or violent material, links, or language.
  • Pirated, hacked, or copyright-infringing material.
  • Encouraging of others to engage in the above behaviors.


If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
  • Remove the Post or Thread - the content is removed from the forum.
  • Place the User in Moderation - all posts and new threads must be approved by a moderator before they are posted.
  • Temporarily Ban the User - user is banned from forum for a period of time.
  • Permanently Ban the User - user is permanently banned from the forum.


Moderators may also rename posts and threads if they are too generic or do not property reflect the content.

Moderators may move threads if they have been posted in the incorrect forum.

Threads/Posts questioning specific moderator decisions or actions (such as "why was a user banned?") are not allowed and will be removed.

The owners of Alpha Software Corporation (Forum Owner) reserve the right to remove, edit, move, or close any thread for any reason; or ban any forum member without notice, reason, or explanation.

Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.



Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
See more
See less

Why indexes are updating

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Why indexes are updating

    I notice on a certain system, when opening a form, there is a brief but obvious updating of, I think, indexes. It shows a few percentages counting up at the bottom, something that probably goes by so fast on other systems that it isn't visible.

    For example, one of the forms is based on one DBF table and has 7 indexes defined. Two of these indexes have a filter, it being ".not.deleted()". There are only around 7,000 records in this table.

    Is this index activity due to the filters. I would not expect each opening of a form to be updating indexes. The actions executed when pushing the button from the main menu is 1) close the form (main menu) 2) open the form 3) set the index.

    Any thoughts on why I see this updating activity and what, if anything, I can do to prevent it and thereby speed up access to the form?

    Thank you.

    Jeff

    #2
    Re: Why indexes are updating

    Do you have a filter within the form design Jeff? If you do, the progress bar you see is an indication of the query running to satisfy the filter.
    -Steve
    sigpic

    Comment


      #3
      Re: Why indexes are updating

      Steve,

      I've been studying this and I don't see it as being index-based as I thought, since I stripped out all indexes and still see the delay and countdown. I also don't see a filter defined in the form. Rather, is it updating field rules when the form is opened and closed (I see it when entering and leaving the form)? If so, there's probably nothing I can do about it since these field rules are all needed.

      Jeff

      Comment


        #4
        Re: Why indexes are updating

        Get rid of .not.deleted()
        It serves no purpose, that's unless you have a very convoluted formula.

        Comment


          #5
          Re: Why indexes are updating

          That's a good suggestion -- force of habit from the old days.

          However, in testing without indexes, the speed issue is not related to indexes after all.

          Thanks.

          Jeff

          Comment


            #6
            Re: Why indexes are updating

            What scripts do you have, if any, in the OnInit, Onactivate, Ontimer..etc?
            Does the form have a base filter?

            Comment


              #7
              Re: Why indexes are updating

              I have an OnFetch script defined, which simply assigns a value to a variable. There is no filter defined for the form. There are some OnArrive and OnDepart scripts defined for buttons on the form, but nothing else defined when opening and closing the form.

              I'm just not sure where all the processing activity comes from.

              Jeff

              Comment


                #8
                Re: Why indexes are updating

                Any events in the Field rules?
                Any calculated fields?
                More specifically, any calculated fields using expression(s) that repeatedly query a table or tables?

                Comment


                  #9
                  Re: Why indexes are updating

                  Jeff, do you see the same behavior opening the default form for the table or set supporting your custom form?

                  Comment


                    #10
                    Re: Why indexes are updating

                    Originally posted by G Gabriel View Post
                    Any events in the Field rules?
                    Any calculated fields?
                    More specifically, any calculated fields using expression(s) that repeatedly query a table or tables?
                    I found no events in the field rules, but I have several calculated fields. It's a product table, and most of the calculations are related to markups and margins. I don't see anything that repeatedly queries a table.

                    Jeff

                    Comment


                      #11
                      Re: Why indexes are updating

                      Originally posted by Tom Cone Jr View Post
                      Jeff, do you see the same behavior opening the default form for the table or set supporting your custom form?
                      That's a good point. I opened a default form and it did not show any processing. This would seem to exclude field rules as the cause. Since I picked a one table form for my analysis, it suggests, therefore, something about the form that is causing this processing. I just can't figure out where it happens.

                      Jeff

                      Comment


                        #12
                        Re: Why indexes are updating

                        Perhaps the problem comes from the embedded browse I have on the form. It's a tabbed form with two tabs, the first showing the specifics of one product (Product Profile), the second showing a browse listing all products (Product List) with certain data about each product such as price, margin, and markup. I guess this needs to recalculate each time the form is opened and closed and is probably at the root of the problem. I'll test it without the browse to see if it is the cause and then break the form into two forms.

                        Thanks.

                        Jeff

                        Comment

                        Working...
                        X