MySQL DATEDIFF Parameters Explained

The DATEDIFF function in MySQL takes two date parameters and returns the difference in days between them. The parameters can be in the format of a date, date time, or a string that can be parsed as a date.

The parameters of the DATEDIFF function include:

1. date1: The first date parameter can be a date, date and time, or a string formatted as a date.
2. date2: The second parameter can be a date, date-time, or a string in date format.

Here are examples of the format for some parameters:

1. ‘YYYY-MM-DD’: A string format for dates.
2. The date and time string format is ‘YYYY-MM-DD HH:MM:SS’.
3. DATE(‘YYYY-MM-DD’): The DATE function converts a date string into date format.
4. NOW(): Current date and time.
5. Current date.
6. The current time is displayed by the function CURTIME().

For example, you can calculate the difference in number of days between two dates using the following syntax:

DATEDIFF(date1, date2)

Among them, date1 and date2 are two date parameters.