Date functions are used to manipulate or perform operation on date values. The following table list some useful date functions:

Function	Description
NOW()	Returns the current date and time.
CURDATE()	Returns the current date.
CURTIME()	Returns the current time.
DATE()	Extract the date part of a date or datetime expression.
DAY()	Returns the day of the month (0-31).
DAYNAME()	Returns the name of the weekday.
MONTH()	Returns the month from the date passed (1-12).
MONTHNAME()	Returns the name of the month.
YEAR()	Returns the year.
DATE_FORMAT()	Displays date and time value in other formats.
EXTRACT()	Extract part of a date.
DATE_ADD()	Adds a specified time value (or interval) to a date value.
DATE_SUB()	Subtracts a specified time value (or interval) from a date value.
DATEDIFF()	Returns the number of days between two dates.

Note: The date and time returned by these functions is the date and time of the computer on which the instance of database server is running.

%a	Abbreviated weekday name (Sun to Sat)
%b	Abbreviated month name (Jan to Dec)
%c	Numeric month name (0 to 12)
%D	Day of the month as a numeric value, followed by suffix (1st, 2nd, 3rd, ...)
%d	Day of the month as a numeric value (01 to 31)
%e	Day of the month as a numeric value (0 to 31)
%f	Microseconds (000000 to 999999)
%H	Hour (00 to 23)
%h	Hour (00 to 12)
%I	Hour (00 to 12)
%i	Minutes (00 to 59)
%j	Day of the year (001 to 366)
%k	Hour (0 to 23)
%l	Hour (1 to 12)
%M	Month name in full (January to December)
%m	Month name as a numeric value (00 to 12)
%p	AM or PM
%r	Time in 12 hour AM or PM format (hh:mm:ss AM/PM)
%S	Seconds (00 to 59)
%s	Seconds (00 to 59)
%T	Time in 24 hour format (hh:mm:ss)
%U	Week where Sunday is the first day of the week (00 to 53)
%u	Week where Monday is the first day of the week (00 to 53)
%V	Week where Sunday is the first day of the week (01 to 53). Used with %X
%v	Week where Monday is the first day of the week (01 to 53). Used with %X
%W	Weekday name in full (Sunday to Saturday)
%w	Day of the week where Sunday=0 and Saturday=6
%X	Year for the week where Sunday is the first day of the week. Used with %V
%x	Year for the week where Monday is the first day of the week. Used with %V
%Y	Year as a numeric, 4-digit value
%y	Year as a numeric, 2-digit value

SQL Server Date Functions

The following table list some useful MySQL Server's built-in date functions:

Function	Description
GETDATE()	Returns the current date and time.
DATEPART()	Returns the specified datepart of the specified date e.g. DATEPART(year,'2016-10-25') return 2016.
DAY()	Returns the day of the month (0-31).
MONTH()	Returns the month from the specified date (0-12).
YEAR()	Returns the year from the specified date.
DATEADD()	Adds or subtracts a specified time interval from a date.
DATEDIFF()	Returns the date or time between two specified dates.
CONVERT()	Displays date and time value in other formats.