How to get an age from a D.O.B field in MySQL?

Question

I need to calculate the age of a \"customer\" from their date of birth.

I have tried to use the following:

DATEDIFF(year, customer.dob, \"2010

Answer 1

DELIMITER $$ DROP FUNCTION IF EXISTS `test`.`__AGE` $$
    CREATE FUNCTION `_AGE`(in_dob datetime) RETURNS VARCHAR(100)
        NO SQL
    BEGIN
       DECLARE l_age VARCHAR(100);
       DECLARE YEARS INT(11);
       DECLARE MONTHS INT(11);
       DECLARE DAYS INT(11);
       DECLARE DIFFS FLOAT;


       SET DIFFS=DATEDIFF(CURRENT_DATE(),in_dob) /365.25;
       SET YEARS=FLOOR(DIFFS) ;
       SET MONTHS=FLOOR((DIFFS - YEARS)*365.25/30.4375) MOD 12;
       SET DIFFS=((DIFFS - YEARS)*365.25/30.4375);
       SET DAYS=CEIL(((DIFFS-MONTHS)*30.4375)) MOD 31;
       RETURN(CONCAT(YEARS, " Year ",MONTHS," Month ",DAYS," Days"));

    END $$
DELIMITER ;

SELECT __Age(CAST('1980-07-16' AS DATE));