TO_DAYS

Convert a date to a day number. This function returns the number of days between year 0 and the given date.

Syntax

TO_DAYS(date)

Description

Given a date date, returns the number of days since the start of the current calendar (0000-00-00).

The function is not designed for use with dates before the advent of the Gregorian calendar in October 1582. Results will not be reliable since it doesn't account for the lost days when the calendar changed from the Julian calendar.

This is the converse of the FROM_DAYS() function.

Examples

SELECT TO_DAYS('2007-10-07');
+-----------------------+
| TO_DAYS('2007-10-07') |
+-----------------------+
|                733321 |
+-----------------------+

SELECT TO_DAYS('0000-01-01');
+-----------------------+
| TO_DAYS('0000-01-01') |
+-----------------------+
|                     1 |
+-----------------------+

SELECT TO_DAYS(950501);
+-----------------+
| TO_DAYS(950501) |
+-----------------+
|          728779 |
+-----------------+

_{This page is licensed: GPLv2, originally from fill_help_tables.sql}