DATEDIFF function do in MySQL?DATEDIFF returns the number of days between two date values.
It subtracts the second date from the first and gives the difference in days.
TIMESTAMPDIFF different from DATEDIFF?TIMESTAMPDIFF can return the difference between two dates in various units like seconds, minutes, hours, days, months, or years.
DATEDIFF only returns the difference in days.
DATEDIFF to find how many days have passed since '2024-01-01'.SELECT DATEDIFF(CURDATE(), '2024-01-01') AS days_passed;
This returns the number of days from January 1, 2024, to today.
TIMESTAMPDIFF in MySQL?TIMESTAMPDIFF(unit, datetime_expr1, datetime_expr2)
Where unit can be SECOND, MINUTE, HOUR, DAY, MONTH, YEAR, etc.
It returns the difference between datetime_expr2 and datetime_expr1 in the specified unit.
You would use TIMESTAMPDIFF with the unit MONTH.
SELECT TIMESTAMPDIFF(MONTH, '2023-01-01', '2024-06-01');
DATEDIFF('2024-06-10', '2024-06-01') return?DATEDIFF returns the number of days between the two dates, so 10th June minus 1st June is 9 days.
TIMESTAMPDIFF can return differences in hours, while DATEDIFF only returns days.
TIMESTAMPDIFF to get the difference in minutes?The unit MINUTE returns the difference in minutes.
DATEDIFF('2024-06-01', '2024-06-10') return?DATEDIFF subtracts the second date from the first, so it returns -9 days.
TIMESTAMPDIFF?HOUR is a valid unit. DECADE and CENTURY are not valid units in MySQL's TIMESTAMPDIFF. (WEEK is also valid.)
DATEDIFF and what kind of result it returns.TIMESTAMPDIFF compared to DATEDIFF.