Case sql using dates DB2

Question

I want to get the month and year of the current date/last month depending on the day.

If were on 8th of the month or before, i want to get the last month and year Otherwise ,I want to get the current month and year.

How do i do that using sql on DB2?

Answer 1

Subtract 8 days and use the year() and month() functions:

select year(current_timestamp - 8 day),
       month(current_timestamp - 8 day)