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Anonymous
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M code for dynamic week in Power Query

Dear all,

I'm facing issue with M code for dynamic week in Power Query, appreciate your advice.

I create a M code to define week# based on the current date as below. There is not issue to define the current week. But, the issue happends in the transition of year for the last weeks if I use the formula as below. This formula looks like cannot define the start or end week of a year.

If I but the current week - 25, the result is 2021-4 instead of week in 2020.

Appreciate your advice!

 

Nguyen_0-1621250072164.png

 

My code: Number.ToText(Date.Year(DateTime.Date(DateTime.LocalNow()))) & Number.ToText(Date.WeekOfYear(DateTime.Date(DateTime.LocalNow()))-25)

 

1 ACCEPTED SOLUTION

Here is modified version that should do that

 

= let date1 = Date.AddWeeks(Date.From(DateTime.LocalNow()), -25) in Number.ToText(Date.Year(date1)) & Text.PadStart(Number.ToText(Date.WeekOfYear(date1)),2,"0")

 

Pat

 





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4 REPLIES 4
mahoneypat
Microsoft Employee
Microsoft Employee

Please try this expression instead.

 

= let date1 = Date.AddWeeks(Date.From(DateTime.LocalNow()), -25) in Number.ToText(Date.Year(date1)) & Number.ToText(Date.WeekOfYear(date1))

 

or you can skip the let and in, and just use the Date.AddWeeks part twice in your original expression

Pat

 





Did I answer your question? Mark my post as a solution! Kudos are also appreciated!

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@mahoneypa HoosierBI on YouTube


Anonymous
Not applicable

Hi @mahoneypat ,

Thanks for your advice!

I still have an issue with the number of week.

Could you please advsie how can I adjust to return the value is "202101" instead of "20211" for week 1 to week 9?

 

 

Here is modified version that should do that

 

= let date1 = Date.AddWeeks(Date.From(DateTime.LocalNow()), -25) in Number.ToText(Date.Year(date1)) & Text.PadStart(Number.ToText(Date.WeekOfYear(date1)),2,"0")

 

Pat

 





Did I answer your question? Mark my post as a solution! Kudos are also appreciated!

To learn more about Power BI, follow me on Twitter or subscribe on YouTube.


@mahoneypa HoosierBI on YouTube


Anonymous
Not applicable

Thanks for your support!

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