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Calculate age from date of birth in MySQL?
To calculate age from date of birth, you can use the below syntax −
select timestampdiff(YEAR,yourColumnName,now()) AS anyAliasName from yourTableName;
Let us first create a table −
mysql> create table DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentDOB datetime ); Query OK, 0 rows affected (0.61 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(StudentDOB) values('1996-01-12'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(StudentDOB) values('1990-12-31'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(StudentDOB) values('1989-04-01'); Query OK, 1 row affected (0.45 sec) mysql> insert into DemoTable(StudentDOB) values('2000-06-17'); Query OK, 1 row affected (0.16 sec)
Following is the query to display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------+---------------------+ | StudentId | StudentDOB | +-----------+---------------------+ | 1 | 1996-01-12 00:00:00 | | 2 | 1990-12-31 00:00:00 | | 3 | 1989-04-01 00:00:00 | | 4 | 2000-06-17 00:00:00 | +-----------+---------------------+ 4 rows in set (0.00 sec)
Here is the query to calculate age from date of birth −
mysql> select timestampdiff(YEAR,StudentDOB,now()) AS AGE from DemoTable;
This will produce the following output −
+------+ | AGE | +------+ | 23 | | 28 | | 30 | | 18 | +------+ 4 rows in set (0.03 sec)
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