MONTHS_BETWEEN returns the number of months between two dates as a decimal. From Jan 1 to Feb 2, 2001 is 32 days. Dividing by average days in month (30.44) or exact calculation: Feb 2 is day 33, Jan 1 is day 1, so 32 days difference = 32/31 ≈ 1.032. The exact result is approximately 1.032 months.