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

Group by week

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

  • Group by week

    In a report, I want to group by week, but my week must be Saturday -> Friday. The date field is spdate. So week(spdate) won't work since it is based on Sun through Saturday. I've been trying the mod function without success.

    Suggestions please.

    ~ Tom

  • #2
    Re: Group by week

    Borrowing from an old post of Ira's.

    Break on

    if(dow(datefield)=7,datefield-DOW(datefield)+7,datefield-DOW(datefield))

    at least I think I have that right.
    There can be only one.

    Comment


    • #3
      Re: Group by week

      YESSssssssssssssss Thank You VERY much and thanks to Ira.

      ~ Tom

      Comment


      • #4
        Re: Group by week

        Sorry, I just not getting my head around this calculation.
        The Below breaks on Saturday
        if(dow(datefield)=7,datefield-DOW(datefield)+7,datefield-DOW(datefield))

        How would I change it to break on Wednesday? or Thursday or Sunday?

        Thanks

        Comment


        • #5
          Re: Group by week

          For whatever day you want to appear as the start of the week in the report, make the group break expression

          if(dow(datefield)>=dow_value,datefield-DOW(datefield)+7,datefield-DOW(datefield))

          for example Thursday's dow_value is 5. To make the report break Thursday through Wednesday

          if(dow(datefield)>=5,datefield-DOW(datefield)+7,datefield-DOW(datefield))

          Based on the normal Alpha dow() function yielding 1 for Sunday through 7 for Saturday, the expression


          datefield-DOW(datefield) will return the same date (the previous Sunday's date) for all dates in a given Sun-Sat week so datefield-DOW(datefield)+7 "pushes" all values with a true dow(datefield)>=5 into the week after they would normally fall.
          Last edited by Stan Mathews; 11-14-2016, 03:15 PM.
          There can be only one.

          Comment


          • #6
            Re: Group by week

            Nope. Remember I'm trying to create a report that breaks on "Saturday" for example. Then this works;

            if(dow(datefield)=7,datefield-DOW(datefield)+7,datefield-DOW(datefield)

            Why is it only working for dow=7, if I change it to any other number, it doesn't work!

            I'd like to use a variable, dow_value, so users could use any first day of week, but I can't get it to work, with any other date than a Saturday date.

            ~ Tom

            ~ Tom

            Comment


            • #7
              Re: Group by week

              Hi Tom,
              Not to butt in... but is this for a payroll app? Because if it is, you might need a week number field that is related to the date paid; in which case you could use a calc to break on that.
              Robin

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

              Comment


              • #8
                Re: Group by week

                Hi Robin - thanks for dropping in. No, this isn't a payroll app. I'm trying to document services provided per week.

                ~ Tom

                Comment


                • #9
                  Re: Group by week

                  I suggested dow(datefield)>=dow_value, note the >=.

                  I tested and it seems to work here.
                  There can be only one.

                  Comment


                  • #10
                    Re: Group by week

                    Tom

                    May be this exp

                    Code:
                    'get Wednesday
                    vThisWed = datefield-DOW(datefield)+4		'date - 6 + 4 = get the Wednesday(*#4)
                    vLastWed = datefield-DOW(datefield)-(7-4)	'date - 6 - 3 = week before	(7 days week - sun, mon,tue = wed)
                    showvar("1st: "+vThisWed+" 2nd: "+vLastWed)

                    Comment


                    • #11
                      Re: Group by week

                      try this and see if okay with you:
                      dim day as c
                      day = "day_value"
                      group expression
                      week(date_field - dow(date_field) - (7-day_number(day_value)))

                      edit:
                      sorry the calculation needs fine tuning.
                      will post back.
                      Last edited by GGandhi; 11-14-2016, 10:40 PM.
                      thanks for reading

                      gandhi

                      version 11 3381 - 4096
                      mysql backend
                      http://www.alphawebprogramming.blogspot.com
                      [email protected]
                      Skype:[email protected]
                      1 914 924 5171

                      Comment


                      • #12
                        Re: Group by week

                        Thanks for taking a look Gandhi.

                        I have a table with as many as 4 months of data, that I need to group by week. I can control the Beginning Date and Ending date fo the report, so the week should group by the dow(Beginning date).

                        thanks again.

                        Comment


                        • #13
                          Re: Group by week

                          i think
                          week(day_field - day_number(day_value) should work.
                          i tested with only two dates seems ok.
                          thanks for reading

                          gandhi

                          version 11 3381 - 4096
                          mysql backend
                          http://www.alphawebprogramming.blogspot.com
                          [email protected]
                          Skype:[email protected]
                          1 914 924 5171

                          Comment


                          • #14
                            Re: Group by week

                            here is a function I wrote that seems to calculate a week based on the day provided:
                            Code:
                            FUNCTION myWeek AS N (d1 AS D, day AS C )
                            	dim dayNumber as n
                            	dayNumber = day_number(day)
                            	dim newD1 as d
                            	if dow(d1) < dayNumber then
                            	newD1 = d1-(dow(d1))-(7-dayNumber)
                            	else 
                            	newD1 = d1 - ((dow(d1)-dayNumber))
                            	end if
                            	myWeek = week(newD1)
                            END FUNCTION
                            Code:
                            dim d1 as d
                            d1 = date()
                            ?week(d1)
                            = 47
                            
                            ?myWeek(d1,"tuesday" )
                            = 47
                            
                            ?myWeek(d1, "wednesday")
                            = 46
                            basically it pushes the date back to the day previous week or this week based on the day of the week.
                            hope this works.

                            if you must use single line of code than the function then
                            Code:
                            week(if (dow(date_field) < day_number(day_value),date()-(dow(date_field))-(7-day_number(day_value)),date_field-(dow(date_field)-(7-day_number(day_value)))))
                            should also work
                            Code:
                            dim date_field as d
                            date_field = {11/15/2016}
                            dim day_value as c
                            day_value = "wednesday"
                            ?week(if (dow(date_field) < day_number(day_value),date()-(dow(date_field))-(7-day_number(day_value)),date_field-(dow(date_field)-(7-day_number(day_value)))))
                            = 46
                            
                            
                            day_value = "monday"
                            ?week(if (dow(date_field) < day_number(day_value),date()-(dow(date_field))-(7-day_number(day_value)),date_field-(dow(date_field)-(7-day_number(day_value)))))
                            = 47
                            Last edited by GGandhi; 11-15-2016, 09:16 AM.
                            thanks for reading

                            gandhi

                            version 11 3381 - 4096
                            mysql backend
                            http://www.alphawebprogramming.blogspot.com
                            [email protected]
                            Skype:[email protected]
                            1 914 924 5171

                            Comment


                            • #15
                              Re: Group by week

                              Is someone having trouble making the suggested expression work or am I misunderstanding the issue?

                              Image 5.png
                              There can be only one.

                              Comment

                              Working...
                              X