Calculate age based on date of birth in MySQL?

Calculate Age based on date of birth with the help of DATE_FORMAT() method in MySQL. Firstly, get the current date time with the help of now() method and you can place your date of birth in DATE_FORMAT().

The syntax is as follows −

SELECT DATE_FORMAT(FROM_DAYS(DATEDIFF(now(),'yourDateofbirth')), '%Y')+0 AS anyVariableName;

Apply the above syntax to calculate age from yourDateofbirth. In the above syntax, replace yourDateofbirth with your date of birth. The query is as follows −

SELECT DATE_FORMAT(FROM_DAYS(DATEDIFF(now(),'2010-11-25')), '%Y')+0 AS Age;

The following is the output −

+------+
| Age  |
+------+
|    8 |
+------+
1 row in set (0.00 sec)

Let us now see this in an example. Firstly, create a table −

mysql> create table AgeCalculationFromDatetime
   -> (
   -> YourDateofBirth datetime
   -> );
Query OK, 0 rows affected (0.52 sec)

Inserting date of birth into table. The query is as follows −

mysql> insert into AgeCalculationFromDatetime values('1995-11-25');
Query OK, 1 row affected (0.13 sec)

Displaying all records with the help of select statement. The query is as follows −

mysql> select *from AgeCalculationFromDatetime;

The following is the output −

+---------------------+
| YourDateofBirth     |
+---------------------+
| 1995-11-25 00:00:00 |
+---------------------+
1 row in set (0.00 sec)

The query to calculate age is as follows −

mysql> SELECT DATE_FORMAT(FROM_DAYS(DATEDIFF(now(),YourDateofBirth)), '%Y')+0 AS Age from AgeCalculationFromDatetime;

Here is the output −

+------+
| Age  |
+------+
| 23   |
+------+
1 row in set (0.00 sec)`

George John

Published on 24-Dec-2018 11:24:37