MySQL TO_DAYS() Function

Return the number of days between the date and year 0:

SELECT TO_DAYS("2017-06-20");

Definition and Usage

The TO_DAYS() function returns the number of days between a date and year 0 (date "0000-00-00").

The TO_DAYS() function can be used only with dates within the Gregorian calendar.

Note: This function is the opposite of the FROM_DAYS() function.

TO_DAYS(date)

Parameter	Description
date	Required. The given date

Works in:	From MySQL 4.0

Return the number of days between the date and year 0:

SELECT TO_DAYS("2017-06-20 09:34:00");