Creating a table with dynamic dates and one variable per date

[nlgenin]

Hello, everyone.

I need your kind help to create a crazy table in PowerQuery M.
What I need to do is create a table with dynamic dates range and replicate these dates for each windturbine tag.

So I have 151 windturbine tags and for each tag I need to have the dates from 01/01/2021 to today.

The dates will come from another table that has the min and max date;

In example it will be more clarified+

The table I need has to come out like this:

Winturbine	Date
A0201	01/01/2021
A0201	01/02/2021
...	...
A0201	06/16/2021
A0202	01/01/2021
...	...
A0202	06/16/2021

So I already have a table with each windturbine tag

All I need to do is add the rows for the dates and fill down with the turbines tags.

Please help!!!

[v-xiaotang · Accepted solution]

Hi @nlgenin 

do you mean you want to create the table like bellow with M code？

Name	Date
A1	2021/1/1
A1	2021/1/2
A1	2021/1/3
A1	2021/1/4
A1	2021/1/5
A1	.
A1	.
A1	.
A1	.
A1	2021/6/23
A2	2021/1/1
A2	2021/1/2
A2	2021/1/3
A2	2021/1/4
A2	2021/1/5
A2	.
A2	.
A2	.
A2	.
A2	2021/6/23

-

here are my operations,

Then open the Advanced Editor, and paste the M code bellow into it

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcjRUitWhnDKimIoFAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}}),
    #"Removed Duplicates" = Table.Distinct(#"Changed Type"),
    diffday=Int16.From( Date.From(DateTime.LocalNow()) - Date.From(#date(2021,1,1)))+1,
    #"Added Custom" = Table.AddColumn(#"Removed Duplicates", "Custom", each List.Dates(#date(2021, 1, 1), diffday, #duration(1, 0, 0, 0))),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom")
in
    #"Expanded Custom"

result:

See sample file attached bellow.

Best Regards,

Community Support Team _ Tang

If this post helps, please consider Accept it as the solution✔️ to help the other members find it more quickly.

[parry2k]

@nlgenin you can add a new column in PQ like this 

{ [Min Date]..[Max Date] }

it will create a list and expand the list, you will get the all the dates for each tag.

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