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

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

Reply
commited2020
Frequent Visitor

Date Error in M query editor

Hello i keep getting this message:

Expression.Error: We cannot apply operator - to types DateTime and Date.
Details:
Operator=-
Left=1/1/2024 12:00:00 πμ
Right=1/1/2016

Here is the code at M query editor

let
StartDate = StartDate,
EndDate = Today,
Today = Date.EndOfYear(DateTime.LocalNow()),
Duration = Duration.Days(Duration.From(Today-StartDate))+1,
Dates = List.Dates(StartDate,Duration,#duration(1,0,0,0)),
#"Converted to Table" = Table.FromList(Dates, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
#"Renamed Columns" = Table.RenameColumns(#"Converted to Table",{{"Column1", "Date"}}),
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date", type date}}),
#"Inserted Year" = Table.AddColumn(#"Changed Type", "Year", each Date.Year([Date]), Int64.Type),
#"Inserted Quarter" = Table.AddColumn(#"Inserted Year", "QuarterNo", each Date.QuarterOfYear([Date]), Int64.Type),
#"Added Custom" = Table.AddColumn(#"Inserted Quarter", "Quarter", each "Q"&Text.From([QuarterNo])),
#"Inserted Month" = Table.AddColumn(#"Added Custom", "MonthNo", each Date.Month([Date]), Int64.Type),
#"Inserted Month Name" = Table.AddColumn(#"Inserted Month", "Month Name", each Date.MonthName([Date]), type text),
#"Inserted Day" = Table.AddColumn(#"Inserted Month Name", "Day", each Date.Day([Date]), Int64.Type)
in
#"Inserted Day"

 Thank u in advance

1 ACCEPTED SOLUTION

Yes, the answer is in this line which is dynamic for both start and end (one year back in time (-1), and end of this year:

 

 Source = {Number.From(#date(Date.Year(DateTime.LocalNow()) - 1,01,01))..Number.From(#date(Date.Year(DateTime.LocalNow()),12,31))}

 

You can set it relative to both start or end (-1 is -1 year).

Or with fixed start and dynamic end:

 Source = {Number.From(#date(2016,01,01))..Number.From(#date(Date.Year(DateTime.LocalNow()),12,31))}

 Or with fixed start and end: 

 Source = {Number.From(#date(2016,01,01))..Number.From(#date(2023,12,31))}

 

View solution in original post

3 REPLIES 3
tt_and
Helper I
Helper I

Try this code:

 

let
    Source = {Number.From(#date(Date.Year(DateTime.LocalNow()) - 1,01,01))..Number.From(#date(Date.Year(DateTime.LocalNow()),12,31))},
    Convert =Table.FromList(Source,Splitter.SplitByNothing(),null,null,ExtraValues.Error),
    #"Converted to Table" =Table.TransformColumnTypes(Convert,{{"Column1",type date}}),
    #"Renamed Columns" = Table.RenameColumns(#"Converted to Table",{{"Column1", "Date"}}),
    #"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date", type date}}),
    #"Inserted Year" = Table.AddColumn(#"Changed Type", "Year", each Date.Year([Date]), Int64.Type),
    #"Inserted Quarter" = Table.AddColumn(#"Inserted Year", "QuarterNo", each Date.QuarterOfYear([Date]), Int64.Type),
    #"Added Custom" = Table.AddColumn(#"Inserted Quarter", "Quarter", each "Q"&Text.From([QuarterNo])),
    #"Inserted Month" = Table.AddColumn(#"Added Custom", "MonthNo", each Date.Month([Date]), Int64.Type),
    #"Inserted Month Name" = Table.AddColumn(#"Inserted Month", "Month Name", each Date.MonthName([Date]), type text),
    #"Inserted Day" = Table.AddColumn(#"Inserted Month Name", "Day", each Date.Day([Date]), Int64.Type)
in
    #"Inserted Day"

First  of all thank u for your response the code worked but the start date is from "1/1/2022" and i want it to start from "1/1/2016". 

Any ideas?

Thank you again!

Yes, the answer is in this line which is dynamic for both start and end (one year back in time (-1), and end of this year:

 

 Source = {Number.From(#date(Date.Year(DateTime.LocalNow()) - 1,01,01))..Number.From(#date(Date.Year(DateTime.LocalNow()),12,31))}

 

You can set it relative to both start or end (-1 is -1 year).

Or with fixed start and dynamic end:

 Source = {Number.From(#date(2016,01,01))..Number.From(#date(Date.Year(DateTime.LocalNow()),12,31))}

 Or with fixed start and end: 

 Source = {Number.From(#date(2016,01,01))..Number.From(#date(2023,12,31))}

 

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

December 2025 Power BI Update Carousel

Power BI Monthly Update - December 2025

Check out the December 2025 Power BI Holiday Recap!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.