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robarivas
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Powery Query #date function

Talking about M (Power Query) language here. How can I parameterize or otherwise make dynamic the 3 arguments in the #date function?

 

#date(2017, 6, 16)

 

I have a 1 row, 1 column table with a single date value (which will change dynamically upon refresh) and I want to add rows (future dates) to that table. The #date function seems to want to accept only hard-coded numbers. I've gotta believe that either isn't true or there is another way.

 

Thanks!!

1 ACCEPTED SOLUTION

You don't need hard coded values: this function works perfectly fine;

Date parameters.png

 

Edit: If you are looking for alternatives then please specify exactly what should happen.

E.g. you can create a series of numbers and then change the type to date.

Or you can use List.Dates.

 

E,g, this fuction creates a table with1 column with 10 dates:

(Year as number, Month as number, Day as number) => Table.FromColumns({List.Dates(#date(Year,Month,Day),10,#duration(1,0,0,0))}, type table[Date as date])
Specializing in Power Query Formula Language (M)

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3 REPLIES 3
MattAllington
Community Champion
Community Champion

You don't need #date if you have a date in a single row, single column table. Just load it up and change to format to type date if needed



* Matt is an 8 times Microsoft MVP (Power BI) and author of the Power BI Book Supercharge Power BI.
I will not give you bad advice, even if you unknowingly ask for it.

You don't need hard coded values: this function works perfectly fine;

Date parameters.png

 

Edit: If you are looking for alternatives then please specify exactly what should happen.

E.g. you can create a series of numbers and then change the type to date.

Or you can use List.Dates.

 

E,g, this fuction creates a table with1 column with 10 dates:

(Year as number, Month as number, Day as number) => Table.FromColumns({List.Dates(#date(Year,Month,Day),10,#duration(1,0,0,0))}, type table[Date as date])
Specializing in Power Query Formula Language (M)

Thanks @MarcelBeug. I was able to adopt a concept from your reply to make my effort work. I replicated my single cell query 3 times so that I could convert each component (year, month, and day) into lists. So I ended up with 3 list queries. I was then able to create parameters (query option) on each of those. I was then able to create a new query that used those parameters to generate a list of dates. Not sure if my solution is the best way to go about this but at least its dynamic and automated and gets me what I want.

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