MySQL: WEEKOFYEAR Function
This MySQL tutorial explains how to use the MySQL WEEKOFYEAR function with syntax and examples.
Description
The MySQL WEEKOFYEAR function returns week of the year for a date value.
Syntax
The syntax for the WEEKOFYEAR function in MySQL is:
WEEKOFYEAR( date_value )
Parameters or Arguments
- date_value
- A date or datetime value from which to extract the week of the year.
Note
- The WEEKOFYEAR function returns the week of the year (a number from 1 to 53) given a date value.
- The WEEKOFYEAR function assumes that the first day of the week is Monday and the first week has more than 3 days.
- The WEEKOFYEAR function returns the same as the WEEK function with the syntax of WEEK(date_value,3).
Applies To
The WEEKOFYEAR function can be used in the following versions of MySQL:
- MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23
Example
Let's look at some MySQL WEEKOFYEAR function examples and explore how to use the WEEKOFYEAR function in MySQL.
For example:
mysql> SELECT WEEKOFYEAR('2014-01-01'); Result: 1 mysql> SELECT WEEKOFYEAR('2014-02-28'); Result: 9 mysql> SELECT WEEKOFYEAR('2014-12-28'); Result: 52
This last WEEKOFYEAR example would display the week of the year for the current system date (current system date is returned by the CURDATE function).
mysql> SELECT WEEKOFYEAR(CURDATE());
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