Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Register now to learn Fabric in free live sessions led by the best Microsoft experts. From Apr 16 to May 9, in English and Spanish.

Reply
wayland
Regular Visitor

Select a column based on a variable

Hi everyone!

 

I have been struggulling with the database at work and need some help. My date base consists in a table with a column named after days of the year and if the system is operative or inoperative on that day. Here's a print:

 

wayland_1-1709575471951.png

 

I need to find you if the system is working on the day I'm displaying it. ie: If I open the dashboard on the 12/01, I want to know how many systems are INOP on that day.

I've tried to convert the line in day of the year, creating a variable with the day of the year and using it to remove the column, but I was not successfull, as follows:

 

 

 

 

... continuation of the code ...

    DayOfTheYear = Date.DayOfYear(DateTime.Date(DateTime.LocalNow())),    
    #"Removing all other columns" = Table.SelectColumns(DayOfTheYear, {"ACFT", Number.ToText(DayOfTheYear)}),

... continuation of the code ...

 

 

 

 

What am I doing it wrong?

1 ACCEPTED SOLUTION
dufoq3
Super User
Super User

Hi @wayland, at step Parameter you can choose column.

Is this what you want?

 

dufoq3_0-1709576968822.png

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUfIPQCJidaKVnGB8Tz8EBZJwxqbaBZdqV6wSsQA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [System = _t, #"10/01" = _t, #"11/01" = _t, #"12/01" = _t]),
    Parameter = "12/01",
    StepBack = Source,
    RemovedOtherColumns = Table.SelectColumns(StepBack,{"System", Parameter})
in
    RemovedOtherColumns

 


Note: Check this link to learn how to use my query.
Check this link if you don't know how to provide sample data.

View solution in original post

3 REPLIES 3
dufoq3
Super User
Super User

Hi @wayland, at step Parameter you can choose column.

Is this what you want?

 

dufoq3_0-1709576968822.png

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUfIPQCJidaKVnGB8Tz8EBZJwxqbaBZdqV6wSsQA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [System = _t, #"10/01" = _t, #"11/01" = _t, #"12/01" = _t]),
    Parameter = "12/01",
    StepBack = Source,
    RemovedOtherColumns = Table.SelectColumns(StepBack,{"System", Parameter})
in
    RemovedOtherColumns

 


Note: Check this link to learn how to use my query.
Check this link if you don't know how to provide sample data.

Thank for the reply @dufoq3 that fixed it! I did not know I needed to do a Step Back

You don't need StepBack because i.e in RemovedOtherColumns I could refer directly to Source, but with StepBack it is easier to read for you 😉


Note: Check this link to learn how to use my query.
Check this link if you don't know how to provide sample data.

Helpful resources

Announcements
Microsoft Fabric Learn Together

Microsoft Fabric Learn Together

Covering the world! 9:00-10:30 AM Sydney, 4:00-5:30 PM CET (Paris/Berlin), 7:00-8:30 PM Mexico City

PBI_APRIL_CAROUSEL1

Power BI Monthly Update - April 2024

Check out the April 2024 Power BI update to learn about new features.

April Fabric Community Update

Fabric Community Update - April 2024

Find out what's new and trending in the Fabric Community.

Top Solution Authors
Top Kudoed Authors