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TO_SECONDS()

Description

The TO_SECONDS(expr) function is used to calculate the number of seconds between a given date or datetime expr and the year 0, January 1, 00:00:00. If expr is NULL, it returns NULL.

Note

The dates 0000-00-00 and 0000-01-01 are considered invalid. MatrixOne year queries should start from 0001. When querying 0000-00-00 and 0000-01-01, TO_SECONDS() returns an error message:

mysql> SELECT TO_SECONDS('0000-00-00');
ERROR 20301 (HY000): invalid input: invalid datetime value 0000-00-00
mysql> SELECT TO_SECONDS('0000-01-01');
ERROR 20301 (HY000): invalid input: invalid datetime value 0000-01-01

Similar to the TO_DAYS() function, for example, when querying SELECT TO_SECONDS('08-10-07');, MatrixOne automatically fills the year 08 to 0008, which is different from MySQL. For more information, see Two-Digit Years in Dates.

Syntax

> TO_SECONDS(expr)

expr is a date or datetime value and can be of type DATETIME, DATE, or TIMESTAMP.

Examples

```sql mysql> SELECT TO_SECONDS('0001-01-01'); +------------------------+ | to_seconds(0001-01-01) | +------------------------+ | 31622400 | +------------------------+ 1 row in set (0.00 sec)

mysql> SELECT TO_SECONDS('2023-07-12 08:30:00'); +---------------------------------+ | to_seconds(2023-07-12 08:30:00) | +---------------------------------+ | 63856369800 | +---------------------------------+ 1 row in set (0.00 sec)

mysql> SELECT TO_SECONDS('2007-10-07'); +------------------------+ | to_seconds(2007-10-07) | +------------------------+ | 63358934400 | +------------------------+ 1 row in set (0.00 sec)

mysql> SELECT TO_SECONDS('97-10-07'); +----------------------+ | to_seconds(97-10-07) | +----------------------+ | 3085257600 | +----------------------+ 1 row in set (0.00 sec) ```