Database Management Systems
When using MySQL, you can use the LAST_DAY() function to return the last day of a given month.
You can provide the current date, or you can provide another specified date (for example, a date from a column in a database), and LAST_DAY() will return the last day of the month for that date.
The MySQL MICROSECOND() function is used to return the microsecond component from a time value.
The return value for this function is in the range 0 to 999999. Below are examples to demonstrate.
The MySQL SECOND() function is used to return the second component from a time value.
The return value for this function is in the range 0 to 59. Below are examples to demonstrate.
The MySQL MINUTE() function is used to return the minute component from a time value.
The return value for this function is in the range 0 to 59. Below are examples to demonstrate.
The MySQL HOUR() function is used to return the hour component from a time value.
The return value for a time-of-day value will be between 0 and 23, however the range returned by this function could be much larger, due to the fact that a time data type isn’t limited to just a time of day (it can also be used to represent elapsed time or a time interval between two events). This means that the returned value could be greater than 24 hours or even a negative value.
In MySQL, you can use the GET_FORMAT() function to return a format string for the provided arguments. This can be useful when you need to provide a format string to another function, such as DATE_FORMAT() or STR_TO_DATE().
The MySQLÂ FROM_UNIXTIME() function enables you to return a date representation of a Unix timestamp.
More specifically, it returns the Unix timestamp as a value in ‘YYYY-MM-DD HH:MM:SS’ or YYYYMMDDHHMMSS format, depending on whether the function is used in a string or numeric context.
In MySQL, you can use the UNIX_TIMESTAMP() function to return a Unix timestamp. A Unix timestamp is the number of seconds that have elapsed since ‘1970-01-01 00:00:00’ UTC.
You can use this function to return a Unix timestamp based on the current date/time or another specified date/time.
In MySQL, you can use the TO_DAYS() function to find out how many days have passed since day 0 for a particular date. For example, you can pass today’s date to this function, and it will return how many days it’s been since day 0.
This article contains examples to demonstrate.
In MySQL, the FROM_DAYS() function returns a date value based on the number of days provided as an argument.
This article contains examples to demonstrate.