Issue converting date to MMM-YY

[meddojeddo]

I have a date column which I want to convert to MMM-YY format. I used this formula: 

= left(format(month([Date]),"mmmm"),3) & "-" & right(Year([Date]),2)

But for some reason, all the columns that are  January 2021 are being converted to Dec-21 and all the columns for all the months in 2020 are being converted to Jan-2020. There must be something wrong with the calculation, but I can't seem to figure out what it is. Any ideas?

[harshnathani · Accepted solution]

HI @meddojeddo ,

You can try this.

YYYY-MON = FORMAT(Table[Date],"YYYY-MM")

else in Power Query create a custom Column

=Number.ToText(Date.Year([Date]))&"-"&Number.ToText(Date.Month([Date]))

Regards,
Harsh Nathani
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[meddojeddo]

@harshnathani the issue I am having now though is that the created column is a string and sorts alphabetically rather than by date. It does not allow me to sort it by the date column because there is more than one date value for the same month. Is there a way I can have the date in this format without converting it to a string?

[harshnathani]

Hi @meddojeddo ,

Check if this helps.

https://community.powerbi.com/t5/Desktop/Year-Sort/m-p/1657973#M663431

You will need to create an index column which will enable you to sort the column.

Regards,

Harsh Nathani

[Pragati11]

Hi @meddojeddo ,

Try creating a column like this:

newCol = FORMAT(ClothingSales[Date],"mmm-yy")

Just use your column name in the above DAX.

Thanks,

Pragati