Date function to DataFrame

Would somebody help me?
I am a dataframe. one of the columns is Date.
I need to round all Dates to month. I know how it to do for one variable. But how it can be don for the column from DataFrame.
something like this:


You probably need broadcasting


At this moment I can’t confirm if that works.

1 Like

Thank you.
It works.

Good to hear, you should mark it as solved for future reference.