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Edit
to_days
description
Syntax
INT TO_DAYS(DATETIME date)to_days returns the number of days between a date and 0000-01-01.
The parameter should be Date or Datetime type.
example
MySQL > select to_days('2007-10-07');
+-----------------------+
| to_days('2007-10-07') |
+-----------------------+
| 733321 |
+-----------------------+keyword
TO_DAYS,TO,DAYS