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# How to group dates by week and Month in Crystal where the week with most days in a particular month get grouped in that month.

Posted on 2011-09-28
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Basically what I'm trying to do is correct the grouping so that the weekly groups are falling into the correct group month.. In other words, if mon-wed falls in the end of January and thur and fri are in February, I want that week to be grouped with January. If only Mon and Tues falls in January and Wed-Fri are February then the week should be grouped with February.

I believe the problem may lie with my formulas as I'm trying to group the weeks by the week ending day of Saturday..

Here is what my formulas are now.

DateGrouping:
{BAQReportResult.LaborDtl.PayrollDate} +
(7 - DayofWeek({BAQReportResult.LaborDtl.PayrollDate},crSunday))

DateGrouping2:
{@DateGrouping} - (DayofWeek({@DateGrouping}, crSaturday)-1)

In group expert the groups are
1. DateGrouping (by Year)
2. DateGrouping (by Month)
3. DateGrouping (by Day, displays as week)

Thanks for the help! Let me know if you need any additional information
0
Question by:SeyerIT
• 7
• 6

LVL 19

Expert Comment

ID: 36716881
Will there be a record for every day of the week ?
0

LVL 2

Author Comment

ID: 36716905
No necessarily.. Some times the shop will shut down and no transactions will take place during that time.. and usually Sundays there will not be any records.
0

LVL 19

Expert Comment

ID: 36717196
Ok try this

``````//@MonthNumber
NumberVar MonthNo := Month({@DateGrouping});
Numbervar WkDay := DayofWeek({@DateGrouping}, crMonday);

If WkDay < 3 Then
If MonthNo <> Month({display_booking.date_created} + (3 - Wkday)) Then
MonthNo := MonthNo + 1
Else If WkDay > 3 Then
If MonthNo <> Month({display_booking.date_created} + (Wkday -3)) Then
MonthNo := MonthNo - 1
Else
Month({display_booking.date_created});

MonthNo
``````

Create a group on this formula in between Year and Week on the group options tab select use formula as group name and enter the formula

MonthName({@MonthNumber})

0

LVL 2

Author Comment

ID: 36717346
Hmm.. Didn't seem to change anything.. For instance, week ending 4/2/2011 is still being grouped with April.. I'm pretty sure I got your formula set up correctly..

My updated groups right now are
1. DateGrouping (by Year)
2. MonthNumber (by Month) (added Monthname({@MonthNumber}) formula to Group Name formula)
3. DateGrouping (by Day, displays as week)

0

LVL 19

Expert Comment

ID: 36717851
Ok so your week group is week ending and not week commencing in that case you will need to change the week formula

``````({display_booking.date_created} - (DayOfWeek ({display_booking.date_created},crSunday)) + 7)
``````

and then change the monthnumber formula

``````WhileReadingRecords;
NumberVar MonthNo := Month({@DateGrouping});
Numbervar WkDay := DayofWeek({@DateGrouping}, crMonday);

If WkDay < 3 Then
If MonthNo <> Month({@DateGrouping} + (3 - Wkday)) Then
MonthNo := MonthNo + 1
Else
MonthNo
Else If WkDay > 3 Then
If MonthNo <> Month({@DateGrouping} - (Wkday -3)) Then
MonthNo := MonthNo - 1
Else
MonthNo
Else
MonthNo;

MonthNo
``````
0

LVL 2

Author Comment

ID: 36718866
Well that made a change for sure, still not quite right though..
Currently it looks like this:

0

LVL 19

Expert Comment

ID: 36813334
That's not the result I get when I use the formulas provided. Can you upload your report with saved data and I will have a look at how you have set it up.
0

LVL 2

Author Comment

ID: 36814481
That would be easy but it contains a lot of sensitive data.. Is there a way for me to summarize the setup perhaps?
0

LVL 2

Author Comment

ID: 36814613
Groups are setup as follows:

First Group (Year) looks like this:

Second Group (Month) Looks like this:

In the options the use a formula as Group Name is as follows:
MonthName({@MonthNumber})

The MonthNumber formula is:
NumberVar MonthNo := Month({@DateGrouping});
Numbervar WkDay := DayofWeek({@DateGrouping}, crMonday);

If WkDay < 3 Then
If MonthNo <> Month({@DateGrouping} + (3 - Wkday)) Then
MonthNo := MonthNo + 1
Else
MonthNo
Else If WkDay > 3 Then
If MonthNo <> Month({@DateGrouping} - (Wkday -3)) Then
MonthNo := MonthNo - 1
Else
MonthNo
Else
MonthNo;

MonthNo

The DateGrouping Formula is:
{BAQReportResult.LaborDtl.PayrollDate} +
(7 - DayofWeek({BAQReportResult.LaborDtl.PayrollDate},crSunday))

The DateGrouping2 Formula is:
{@DateGrouping} - (DayofWeek({@DateGrouping}, crSunday)+7)

The last group is setup as so:

0

LVL 19

Expert Comment

ID: 36814876
Here's the test report and data I have setup
date-range-test.rpt
Dates.xls
0

LVL 2

Author Comment

ID: 36815985
Ah, I was able to replicate what you did with your test file.. Sorry, I didn't think about creating an excel file and using that as a source for a test file..

I noticed one issue though.. And this is happening on my report exactly how it happens on your test report.

Have a look at week ending 6/4/2011.. For some reason Tuesday May 31st is getting pulled into week ending 6/4 under the month of May.. (see the attached picture) I'm totally baffled by this. Only thing I can think of is it has something to do with it being the 31st..

Any ideas?

0

LVL 19

Accepted Solution

GJParker earned 500 total points
ID: 36816027
I made a change to teh @MonthNumber Formula befoe and forgot to reset the test, change your MonthNumber Formula to

``````WhileReadingRecords;
NumberVar MonthNo := Month({Sheet1_.Date});
Numbervar WkDay := DayofWeek({Sheet1_.Date}, crSunday);

If WkDay < 4 Then
If MonthNo <> Month({Sheet1_.Date} + (4 - Wkday)) Then
MonthNo := MonthNo + 1
Else
MonthNo
Else If WkDay > 4 Then
If MonthNo <> Month({Sheet1_.Date} - (Wkday - 4)) Then
MonthNo := MonthNo - 1
Else
MonthNo
Else
MonthNo;

If MonthNo <> 0 Then MonthNo Else 12
``````
0

LVL 2

Author Closing Comment

ID: 36816053
Yup! That did the trick! Thanks for all your time and help! Grouping exactly how I need it now :)
0

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