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Oracle compute age function tips

Oracle Database Tips by Donald BurlesonFebruary 18, 2016

Question: What is the way to pass a birthday to Oracle and return the age?  I know that you subtract sysdate from birthdate, but I need to see examples of using Oracle built-in functions to compute age.  What are the ways to compute an age?

Answer:  There are many ways to ciinvert a birth date and return a person's age in years.

   EXTRACT(YEAR FROM sysdate) - EXTRACT(YEAR FROM to_date('31-jan-2011', 'DD-MON-YYYY')
from dual;

Here is another way to calculate the age of a person from their birth date:

   trunc(months_between(sysdate,birth_date)/12) year

      (select to_date('31-jan-2011', 'DD-MON-YYYY') birth_date
from dual);

Here is a PL/SQL to accept birth date and display the age:

   v_dob        DATE:= to_date('&v_dob', 'MM/DD/YYYY');
    v_your_age   NUMBER(3, 1);
    v_your_age := TRUNC(MONTHS_BETWEEN(SYSDATE, v_dob))/12;
    DBMS_OUTPUT.PUT_LINE ('Your age is ' || v_your_age);


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