How old are the Smith children today?

      
mysql>
mysql>
mysql> CREATE TABLE sibling
    -> (
    ->  name    CHAR(20),
    ->  birth   DATE
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql>
mysql> INSERT INTO sibling (name,birth) VALUES('Gretchen','1942-04-14');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO sibling (name,birth) VALUES('Wilbur','1946-11-28');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO sibling (name,birth) VALUES('Franz','1953-03-05');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> SELECT * FROM sibling;
+----------+------------+
| name     | birth      |
+----------+------------+
| Gretchen | 1942-04-14 |
| Wilbur   | 1946-11-28 |
| Franz    | 1953-03-05 |
+----------+------------+
3 rows in set (0.00 sec)

mysql>
mysql>
mysql> SELECT name, birth, CURDATE( ) AS today,
    -> YEAR(CURDATE( )) - YEAR(birth)
    -> - IF(RIGHT(CURDATE( ),5) < RIGHT(birth,5),1,0)
    -> AS 'age in years'
    -> FROM sibling;
+----------+------------+------------+--------------+
| name     | birth      | today      | age in years |
+----------+------------+------------+--------------+
| Gretchen | 1942-04-14 | 2011-10-03 |           69 |
| Wilbur   | 1946-11-28 | 2011-10-03 |           64 |
| Franz    | 1953-03-05 | 2011-10-03 |           58 |
+----------+------------+------------+--------------+
3 rows in set (0.00 sec)

mysql>
mysql>
mysql> drop table sibling;
Query OK, 0 rows affected (0.00 sec)

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How old are the Smith children today? : Year « Date Time « SQL / MySQL

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