how to mark every "LAST DATE" in every month using "POWER QUERY"

[Anonymous]

how to mark every "LAST DATE" in every month using "POWER QUERY"
why "POWER QUERY" because after that it will be "filtered" and "grouped by"

example
Date            | Flag

-------------| ----

30/06/2022 | 0
31/06/2022 | 1
01/07/2022 | 0
02/07/2022 | 0
03/07/2022 | 0
...
10/07/2022 | 1 --> today

[v-yiruan-msft · Accepted solution]

Hi @Anonymous ,

I created a sample pbix file(see attachment) for you, please check whether that is what you want.

You can create add a custom column as below in Power Query Editor:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("VdGxDYAwEEPRXVIjJXZISGZB7L8GokH+5a/uyXffZVRVN7s8xxfO6BlnxsiYGVfGytgZaigYBISgEBiCQ4AIEoEiWAyLuQcshsWwGBbDYlgMi2HpsPSwzIpwRs84M0bGzLgyVsbG0YYiCAhB8T/qeQE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Date = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date", type date}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Flag", each if [Date] = Date.EndOfMonth([Date]) or [Date] = Date.From(DateTime.LocalNow()) then 1 else 0)
in
    #"Added Custom"

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards

[johnt75]

You could compare the date field with Date.EndOfMonth(). You may need to play about with converting your current date field to datetime but you should be able to do that in the comparison code.