How do you do date math that ignores the year?

Question

I am trying to select dates that have an anniversary in the next 14 days. How can I select based on dates excluding the year? I have tried something like the following.

Answer 1

How about this?

select *
from events e
where to_char(e."date", 'MM-DD') between to_char(now(), 'MM-DD') and 
                                         to_char(date(now())+14, 'MM-DD')

You can do the comparison as strings.

To take year ends into account, we'll convert back to dates:

select *
from events e
where to_date(to_char(now(), 'YYYY')||'-'||to_char(e."date", 'MM-DD'), 'YYYY-MM-DD')
           between date(now()) and date(now())+14

You do need to make a slight adjustment for Feb 29. I might suggest:

select *
from (select e.*,
             to_char(e."date", 'MM-DD') as MMDD
      from events
     ) e
where to_date(to_char(now(), 'YYYY')||'-'||(case when MMDD = '02-29' then '02-28' else MMDD), 'YYYY-MM-DD')
           between date(now()) and date(now())+14