SQL NOW Vs CURDATE Datatype
Those functions have something to do with the current date. The returned results, however, are not the same, indicating that the functions are distinct even if you don't see it in some circumstances.
I've added the function
CURTIME() to the overview for completeness' sake.
SQL NOW Datatype
NOW() returns both the current date and the current time, such as 2021-01-01 20:00:00.
NOW() returns the current timezone's whole time.
Example: The following is a demo of NOW() function:
Output: The following is the output of now function:
CURDATE() returns the current date without the time, such as 2021-01-01.
Only the date component of the date in the current timezone is returned by CURDATE().
Example: A demo of CURDATE().
The date component will be returned by the above query
Output: The following is the output that displays only date, not time
SQL Difference Between NOW And CURDATE Datatype
There are 5 main distinguish between now and curdate function:-
|NOW returns a timestamp in multiple formats containing the date and time components.||CURDATE returns the current time's DATE component.|
|NOW() returns the date and time when the statement, procedure, etc. began.||Current date() returns merely the date.aa|
|NOW() appears to be dynamic and does not appear to benefit from indexing||CURRENT DATE is a static variable that works well with date indexes.|
|The NOW() function returns a timestamp for the current datetime.||The CURDATE() function only returns the current date, not the time.|
|Depending on how it was asked, NOW() returns the date and time components as a timestamp in various forms.||The DATE component of the current time is returned by CURDATE(). CURDATE MANUAL.|
CURDATE() = DATE(NOW()) NOW() = CONCAT(CURDATE(), ' ', CURTIME())
Which function is appropriate for which purpose depends on whether you only need the date, only the time or both of them.