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timestampdiff function usage
The timestampdiff function is used to calculate the difference in days between two date times, calculate the difference in hours between two date times, and use column names for calculations. For more questions about the timestampdiff function, please see the article below this topic for details. PHP Chinese website welcomes everyone to come and learn.
timestampdiff function usageThe timestampdiff function is used to calculate the difference in days between two date times, calculate the difference in hours between two date times, and use column names for calculations. Just specify the time unit to be calculated and then provide the start and end datetime values. This function is very useful for scenarios where date and time difference calculations need to be performed in SQL queries.
Calculate the difference between two timestamps using MySQL's TIMESTAMPDIFF functionUse MySQL's TIMESTAMPDIFF function to calculate the difference between two timestamps. When developing web applications or database applications, we often use MySQL to store and process time-related data. Calculating the difference between two timestamps is a requirement that is often encountered. MySQL provides the TIMESTAMPDIFF function to easily calculate the difference between two timestamps. The syntax of the TIMESTAMPDIFF function is as follows: TIMESTAMPDIFF
What output does the UNIX_TIMESTAMP() function produce?The function UNIX_TIMESTAMP generates output in seconds, i.e. the function converts the specified date or datetime value into total seconds. For example, the date '1970-05-1505:04:30' will be converted by the UNIX_TIMESTAMP function to a total of 11576070 seconds. mysql>selectUNIX_TIMESTAMP('1970-05-1505:04:30');+-------------------------------- -------+|UNIX_TIMESTAMP('1970-05-
What does MySQL return when you pass an out-of-range value in the UNIX_TIMESTAMP() or FROM_UNIXTIME() function?When we pass out-of-range value in UNIX_TIMESTAMP, MySQL returns 0. The valid range of values is the same as the TIMESTAMP data type. Example mysql>SelectUNIX_TIMESTAMP('1969-01-0104:05:45');+---------------------------------- --------+|UNIX_TIMESTAMP('1969-01-0104:05:45')|+-----------------------
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