mysql>
mysql> SELECT TIMESTAMPDIFF(FRAC_SECOND,'2003-02-01','2003-05-01');
+------------------------------------------------------+
| TIMESTAMPDIFF(FRAC_SECOND,'2003-02-01','2003-05-01') |
+------------------------------------------------------+
| 7689600000000 |
+------------------------------------------------------+
1 row in set (0.00 sec)
|