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



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

sorting a subset of a dbf file et al

  • Filter
  • Time
  • Show
Clear All
new posts

  • sorting a subset of a dbf file et al

    I know enough to be dangerous and need some help ...

    I have a dbf file with each record containing a name, sort field, then 4 true/false fields.

    I need to process this file, multiple times (one for each parameter) in a sequential manner, defined by the sort field.

    Each time I process the file (once for each true/false field), I need to test the respective true/false field if it is "true" then write out a text asc file.

    The problem I am having is that I cannot get the file in the sorted sequence I need so that I can cycle thru it multiple times .. then the issue is how to process/cycle it multiple times...

    The rest is working ..

    Any help would be appreciated..

  • #2
    Re: sorting a subset of a dbf file et al

    The rest is working ..
    And what might the rest be?

    One generally orders a table by setting an approprite index into control.


    or telling Alpha to order the table.

    There can be only one.


    • #3
      Re: sorting a subset of a dbf file et al

      the rest is testing if true is in the field and determining if a record should be written or not.

      Now to cycle thru the database ...

      Stan .. thanks for the suggestions . .now to see if I can make them work ..

      ps .. maybe it is me .. but the help does not seem to be very much help at times ...


      • #4
        Re: sorting a subset of a dbf file et al

        Stan, I inserted the following ...

        tbl ="hallwebpagemfg")

        and it bombs out on the "tbl_pointer.order line ...

        This is a "dbf" file .. and I thought I read some place where that sorting a dbf file (not using its index) is not possible ...

        Is there other code that must exit for this to work ??


        • #5
          Re: sorting a subset of a dbf file et al

          I used tbl_pointer generically to indicate you had to have one. Yours is tbl so you want

          tbl ="hallwebpagemfg")
          There can be only one.


          • #6
            Re: sorting a subset of a dbf file et al

            Originally posted by BEAMER View Post

            and it bombs out on the "tbl_pointer.order line ...
            Is there a space between .order and line?

            Fieldname should have an underscore instead of a space. Xbasic code thinks there is another word there instead of a fieldname.
            Al Buchholz
            Bookwood Systems, LTD
            Weekly QReportBuilder Webinars Thursday 1 pm CST

            Occam's Razor - KISS
            Normalize till it hurts - De-normalize till it works.
            Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
            When we triage a problem it is much easier to read sample systems than to read a mind.
            "Make it as simple as possible, but not simpler."
            Albert Einstein



            • #7
              Re: sorting a subset of a dbf file et al

              Stan and Al,

              As I said I know enough to be dangerous ....

              For some reason I thought you needed a new pointer object .. then realized that I already had the one I needed.

              I changed it accordingly .. and it worked like a charm ..

              Now to tackle the recycling for each of the T/F fields ..

              Thanks ...


              • #8
                Re: sorting a subset of a dbf file et al

                I hope there is someone that can help me with this as I have come to an impasse ....

                I get an "expected value" error message (which to me tells me nothing ....
                .... on the line ....

                FileName = "d:\temp\" + category[IndxNum]

                I am also toying with how to make

                if tbl.activecode = .T. then

                change to

                if tbl.telephony = .T. then ...... on cycle 2


                if tbl.strcable = .T. then ... on cycle 3

                ... etc.. etc.. to the last cycle .. that would be appreciated ...

                Any HELP would be appreciated ..

                Here is the code ..

                dim tbl as P
                dim category[0] as C
                dim IndxNum as N
                dim FileName as C
                msgbox("Starting Process")
                category[] = "Activecode"
                category[] = "Telephony"
                category[] = "Strcable"
                category[] = "Security"
                category[] = "Avproducts"
                category[] = "Outside"
                category[] = "Iptelephony"
                category[] = "Specialneeds"
                category[] = "Ipsecurity"
                category[] = "Ipsupport"
                IndxNum = category.size()
                tbl ="hallwebpagemfg")
                IndxNum = 1
                while IndxNum < (IndXNum + 1)
                FileName = "d:\temp\" + category[IndxNum]
                FileName = FileName + ".txt"
                file_pointer = file.create(FileName, FILE_RW_EXCLUSIVE)
                while .NOT. tbl.fetch_eof()
                if tbl.activecode= .T. then
                file_pointer.write_line(trim(tbl.mfgname) + " " + trim(tbl.mfghtml))
                end if
                end while
                IndxNum = IndxNum + 1
                end while
                msgbox("Completed Process")


                • #9
                  Re: sorting a subset of a dbf file et al

                  Backslash has several meanings in xbasic expressions. Check the documentation for an explanation.

                  You need

                  FileName = "d:\temp\\" + category[IndxNum]


                  FileName = "d:\temp"+chr(92) + category[IndxNum]
                  There can be only one.


                  • #10
                    Re: sorting a subset of a dbf file et al

                    Stan, thanks for your help .. it solved the file problem .... and as I suspected .. this has lead to another question ..

                    if I have a field name in an array variable called "category[IndxNum"] how do I get the contents of that field that is located in the table "tbl".

                    And the other question is I must be misusing the documentation as when I need to find out all the actions that can be applied to the object "tbl" I have no idea how to find it .. any thoughts ..

                    I really appreciate the help .. Don


                    • #11
                      Re: sorting a subset of a dbf file et al

                      if I have a field name in an array variable called "category[IndxNum"] how do I get the contents of that field that is located in the table "tbl".
                      Example is easiest (from the interactive window).

                      dim arr[2] as C
                      arr[1] = "state"
                      arr[2] = "city"
                      tbl ="store")
                      ? tbl.CITY
                      = "Glasgow             "
                      ? eval("tbl."+arr[2])
                      = "Glasgow             "
                      Though not complete you can find most functions and methods that are available to a table pointer in the documentation under the title (strangely enough) Table Functions and Methods. There are a few missing from that topic which you will see in the xbasic explorer or autocomplete in the code editor .
                      Attached Files
                      There can be only one.