Forum Discussion
Helper IICalculate same day previous month DAX
Hello everyone!
I think my inquiry should be an easy one.
I want to find a way to compute a date based on the output of another date.
Say I have the following date,
DATE(2021,01,16)
I want to simply adjust this date to the same day of the previous month such that it has the following output;
DATE(2020,12,16)
Apparently PREVIOUSMONTH(DATE(2021,01,16)) does not work.
Any ideas?
4 Replies
CliffordAPNVM!
I figured it out. There is a simple way to do this.You can use the MONTH function to calculate the previous month of the output date, and subtract the number of months.
DATE(2021,MONTH(DATE(2021,01,16))-1,16)
output
DATE(2020,12,16). 🙂
- AlexisOlson
Super User
Looks good but watch out for the 31st. How do you want to handle those?
No, this is a very bad way to handle time calculations. Please read this and do not make mistakes others so easily do: Time Intelligence in Power BI Desktop - SQLBI
Hello CliffordAP
You can use dateadd .
LastMonth = DATEADD('Table'[Date], -1, Month)
