create date value for each row in a table

 

 

Create a new Blank Query with

 

= List.Dates(#date(2021,01,01), 365, #duration(1,0,0,0))

 

That will give you a list of dates. Give it a name.

Convert to table.

Change to date type.

Filter the dates with :

= Table.SelectRows(#"Changed Type", each Date.Day([Column1]) = 1)

(substitute your step name and column name in that)

 

---

In the original table, Add a custom column (type # and the name of the query should autocomplete)

Then expand the column from the column header.

Good luck

Hello Zabeer 

 

add a new column with this formula

List.Transform(List.Numbers(1,12), each #date(2021,_,1))

and then expand the list-column to new rows. Here the complete example

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTI2MzAwUIrViVZyAvJMLMC8WAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}, {"Value", Int64.Type}}),
    AddMonths = Table.AddColumn
    (
        #"Changed Type",
        "MonthsList",
        each List.Transform(List.Numbers(1,12), each #date(2021,_,1))
    ),
    #"Expanded MonthsList" = Table.ExpandListColumn(AddMonths, "MonthsList")
in
    #"Expanded MonthsList"

this transforms this

 

into this

 

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

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Kudoes are nice too

Have fun

Jimmy

 

Hi Zabeer ,

 

If you also want to add each days of each months, please try this:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTI2MzAwUIrViVZyAvJMLMC8WAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}, {"Value", Int64.Type}}),
    AddDays = Table.AddColumn(#"Changed Type", "DaysList", each let 
StartDate = #date(2021,01,01),
EndDate = #date(2021,12,31),
DurationDays = Duration.Days( EndDate-StartDate)
in 
List.Dates(StartDate, DurationDays, #duration(1,0,0,0))),
    #"Expanded DaysList" = Table.ExpandListColumn(AddDays, "DaysList")
in
    #"Expanded DaysList"

 

 

Best Regards,

Icey

 

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