TO_SECONDS
Returns the number of seconds counting from year 0 to the input datetime.
Syntax
TO_SECONDS ( dateobj )
Arguments
dateobj: a valid date, datetime, or parsable date string.
Return Type
Integer
Examples
SELECT TO_SECONDS('0000-01-01');
****
+--------------------------+
| TO_SECONDS('0000-01-01') |
+--------------------------+
| 86400 |
+--------------------------+
SELECT TO_SECONDS('2016-03-23 08:17:01');
****
+-----------------------------------+
| TO_SECONDS('2016-03-23 08:17:01') |
+-----------------------------------+
| 63625940221 |
+-----------------------------------+