How to find days between two dates for each month of a year?

[Capuchino]

Hello, 

I have data that currently exist in this format:

Project	Start Date	End Date
1	15-Jan-2022	20-Feb-2022
2	10-Jan-2022	25-Mar-2022
3	15-Feb-2022	20-Jun-2022

My user is interested in looking at Number of Days between Start and End Date by Month for each Year. How can we achieve the below  output using formulas or any other approch:

S.No	Start Date	End Date	Jan-22	Feb-22	Mar-22	Apr-22	May-22	Jun-22
1	15-Jan-2022	20-Feb-2022	16	20
2	10-Jan-2022	25-Mar-2022	21	29	25
3	15-Feb-2022	20-Jun-2022		14	31	30	31	20

Any ideas on how to do this on a Sharepoint List, Power App or eventually Power BI?

Many thanks in advance !

C

[EddieE]

@Capuchino 

You can do this in Power BI using the solution here. You end up with this table, which I added a '+1' to the formula to include EndDate in the count:

Adjusted Measure:

CountInDateRange = 
VAR StartDate = VALUE( SELECTEDVALUE( ProjectData[Start Date ] ) )
VAR EndDate = VALUE( SELECTEDVALUE( ProjectData[End Date] ) )
VAR MinDateInContext = VALUE( MIN( Dates[Date] ) )
VAR MaxDateInContext = VALUE( MAX( Dates[Date] ) )

RETURN
 IF( AND( StartDate < MinDateInContext, EndDate > MinDateInContext ),
        MIN( EndDate, MaxDateInContext ) - MinDateInContext + 1,
            IF( AND( AND( StartDate > MinDateInContext, StartDate < MaxDateInContext ), EndDate > MinDateInContext ),
                 MIN( EndDate, MaxDateInContext + 1 ) - StartDate ,
                    Blank() ) ) 
 

To set this up you need the data similar to that you supplied above in a table called ProjectData and a date table called Dates with a column named [Date] with all dates in the range that you wish to count against. If you are not familiar with setting up a date table there are plenty of examples via Google, with code you can copy and paste. You don't need to setup a relationship between the Date table and the ProjectData table.

In PowerApps, you could solve this using the Sequence() function, however, the dynamic nature of your Year/Month columns would prove difficult to achieve - not impossible though

[TheRobRush]

Ok so the following code, placed anywhere it can be triggered to run (In my case I placed it in the OnSelect of a button), will cycle through a set of start and end dates (In my example it is going through a collection that currently has 3 sets of start and end dates, the third of which starts in July and ends in September just to see if 3 months would break it)

This formula returns a collection with the following columns

Month: This is the number of the month, can change it in formula to be text value of month if needed, or just anywhere you display it, convert on the control it's being displayed on

DaysThisMonth: Total count of days requested off in that month

MonthDates: Nested table that includes every day selected for the request in that specific month.

ClearCollect(
    RangeBreakdownTotals,
    AddColumns(
GroupBy(
Ungroup(
           ForAll(

DateRangeRequest,


With({startDate:ThisRecord.Start,
      sequenceDays: Sequence(DateDiff(ThisRecord.Start,
                                      ThisRecord.End) + 1)
      },
      AddColumns(sequenceDays,
                 "Date",
                 DateAdd(startDate, Value - 1, Days),
                 "Month",Month(DateAdd(startDate, Value - 1, Days))
       )


)),"Value"


),"Month","MonthDates"
),"DaysThisMonth",CountRows(ThisRecord.MonthDates)
))

[Capuchino]

Hello The RobRush, 

Amazing formula !

The formula works well thank you, however I will need to have the Years as well  because for the moment if I have some days in march 2022 and some days in march 2023, it sum up all March days. 

The idea is to be able to multiply the number of days with a specific number of hours so I got the workload in hours per months of the year per project.  

Could you please help me to add the years?

Best regards, 

Capucine  

[TheRobRush · Accepted solution]

ClearCollect(
    RangeBreakdownTotals,
    AddColumns(
GroupBy(
Ungroup(
           ForAll(

DateRangeRequest,


With({startDate:ThisRecord.Start,
      sequenceDays: Sequence(DateDiff(ThisRecord.Start,
                                      ThisRecord.End) + 1)
      },
      AddColumns(sequenceDays,
                 "Date",
                 DateAdd(startDate, Value - 1, Days),
                 "Month",Month(DateAdd(startDate, Value - 1, Days)),
                 "MonthYear",Concatenate(Month(DateAdd(startDate, Value - 1, Days)),Year(DateAdd(startDate, Value - 1, Days)))
                 ///"Month",Concatenate(Month(DateAdd(startDate, Value - 1, Days)),Year(DateAdd(startDate, Value - 1, Days)))
       )


)),"Value"


///),"Month","MonthDates"
),"MonthYear","MonthYearDates"
),"DaysThisMonth",CountRows(ThisRecord.MonthYearDates)
))

[Capuchino]

@TheRobRush  Many many thanks for your help!

[Anonymous]

Hi,

can you give the crux of the solution please,

it's totally confusing to read🙂