Oracle Sql How to calculate if a birthdate is in 2 months from SYSDATE

Question

I need help making a query that will return results from a table for where all people are currently 25 and whose birthdate is in 2 months (anytime of the month).

My current query is:

SELECT * from account_info 
where to_char(SYSDATE,'YYYY')-to_char(birth_date,'YYYY') = 25
AND Months_between(TO_DATE(SYSDATE),TO_DATE(birth_date)) = 2

The format of birth_date in the database is 11-NOV-87

This isn't returning the proper months I need, because this is also calculating the years and it comes out to be 297 months. I was previously using:

AND abs(to_char(SYSDATE,'MM')-to_char(birth_date,'MM')) = 2`

which showed the proper result but I'm not sure if this will work if the current SYSDATE = December and the birth_date = February .

How do I return only the people that are currently 25 and where their birthdate is 2 months from the SYSDATE using the proper date calculations?

Answer 1

Try:

WHERE months_between(trunc(sysdate,'mm'),trunc(birth_date,'mm'))=310

EDIT Corrected month count from 298 to 310 (it was calculating 24 turning 25 rather than 25 turning 26).

Answer 2

SOLUTION:

SELECT * from account_info
WHERE to_char(SYSDATE,'YYYY')-to_char(birth_date,'YYYY') = 25 AND to_char(add_months(TRUNC(SYSDATE), 2),'MM') = to_char(birth_date,'MM');

The add_months will add 2 to the current sysdate month and compare that value to the birth_date.