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TIMESTAMPDIFF() - Difference in Timestamp Component
How to calculate the difference between two timestamps in a given component unit using the TIMESTAMPDIFF() function?
✍: FYIcenter.com
TIMESTAMPDIFF(unit, to_time, from_time) is a MySQL built-in function that calculates the difference from one timestamp to another in a given component unit. For example:
SELECT TIMESTAMPDIFF(DAY, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002'); -- +-------------------------------------------------------------------------+ -- | TIMESTAMPDIFF(DAY, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002') | -- +-------------------------------------------------------------------------+ -- | -1 | -- +-------------------------------------------------------------------------+ SELECT TIMESTAMPDIFF(HOUR, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002'); -- +--------------------------------------------------------------------------+ -- | TIMESTAMPDIFF(HOUR, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002') | -- +--------------------------------------------------------------------------+ -- | -46 | -- +--------------------------------------------------------------------------+ SELECT TIMESTAMPDIFF(SECOND, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002'); -- +----------------------------------------------------------------------------+ -- | TIMESTAMPDIFF(SECOND, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002') | -- +----------------------------------------------------------------------------+ -- | -169137 | -- +----------------------------------------------------------------------------+ SELECT TIMESTAMPDIFF(MICROSECOND, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002'); -- +---------------------------------------------------------------------------------+ -- | TIMESTAMPDIFF(MICROSECOND, '2028-12-31 23:59:59', '2028-12-30 01:01:01.000002') | -- +---------------------------------------------------------------------------------+ -- | -169137999998 | -- +---------------------------------------------------------------------------------+ SELECT TIMEDIFF('2028-12-31 23:59:59', '2029-01-01 01:01:01.000002'); -- +---------------------------------------------------------------+ -- | TIMEDIFF('2028-12-31 23:59:59', '2029-01-01 01:01:01.000002') | -- +---------------------------------------------------------------+ -- | -01:01:02.000002 | -- +---------------------------------------------------------------+ SELECT DATEDIFF('2028-12-31 23:59:59', '2029-01-01 01:01:01.000002'); -- +---------------------------------------------------------------+ -- | DATEDIFF('2028-12-31 23:59:59', '2029-01-01 01:01:01.000002') | -- +---------------------------------------------------------------+ -- | -1 | -- +---------------------------------------------------------------+
Reference information of the TIMESTAMPDIFF() function:
TIMESTAMPDIFF(unit, to_time, from_time): int Subtracts to_time from from_time and returns the difference as an integer for the given unit, which should be one of the following values: MICROSECOND, SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR. Arguments, return value and availability: unit: Required. The timestamp component unit for the result. to_time: Required. The timestamp to be subtracted. from_time: Required. The timestamp to be subtracted from. int: Return value. The difference as an integer for the given unit. Available since MySQL 4.
Related MySQL functions:
⇒ TIME_FORMAT() - Formatting Time
⇐ TIMESTAMPADD() - Incrementing Timestamp
2023-11-17, 246🔥, 0💬
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