How to calculate difference between two dates in months in MySQL

Question

I have two columns in a MySQL table:

• DateOfService (datetime)
• BirthDate (date)

I want to run a MySQL query that will provide date diffe

Answer 1

TRY with

PERIOD_DIFF(P1,P2)

Returns the number of months between periods P1 and P2. P1 and P2 should be in the format YYMM or YYYYMM. Note that the period arguments P1 and P2 are not date values.

mysql> SELECT PERIOD_DIFF(200802,200703); -> 11