MySQL YEARWEEK() Function

MySQL YEARWEEK() Function; Through this tutorial, i am going to show you how to use of MySQL YEARWEEK() function with the help of examples.

YEARWEEK() function in MySQL is used to find year and week for a given date. If the date is NULL, the YEARWEEK() function will return NULL. Otherwise, it returns value of year which range from 1000 to 9999 and value of week which ranges between 0 to 53.

Syntax of MySQL YEARWEEK() Function

The basic syntax of mysql yearweek() function; as follows:

YEARWEEK(date)
YEARWEEK(date,mode)

Where:

The date is the date you want the number of weeks and weeks to come back from you.
Mode is a number that specifies whether the week should start on Sunday or Monday, and weeks should be 53 or 1 to 53. See the table below for possible mode values.

If you do not specify the mode, the mode is 0.

Example 1 – MySQL YEARWEEK() Function

Let’s take first example for mysql yearweek() function; as follows:

SELECT YEARWEEK('2025-01-02') As 'Result';

Output-1

+--------+
| Result |
+--------+
| 202452 |
+--------+

Example 2 – MySQL YEARWEEK() Function

Let’s take second example of mysql yearweek() function; as follows:

SELECT YEARWEEK('1975-10-15') As 'Result';

Result:

+--------+
| Result |
+--------+
| 197541 |
+--------+

Example 3 – MySQL YEARWEEK() Function

However, you also have the option to present a second argument that you use the mode.

SELECT YEARWEEK('2020-12-10', 5) AS 'Mode 5';

Result:

+--------+
| Mode 5 |
+--------+
| 202049 |
+--------+

Below we are providing the list of mode values.

Mode	First day of week	Range	Week 1 is the first week …
0	Sunday	0-53	with a Sunday in this year
1	Monday	0-53	with 4 or more days this year
2	Sunday	1-53	with a Sunday in this year
3	Monday	1-53	with 4 or more days this year
4	Sunday	0-53	with 4 or more days this year
5	Monday	0-53	with a Monday in this year
6	Sunday	1-53	with 4 or more days this year
7	Monday	1-53	with a Monday in this year

These are the same values that can be used with the WEEK () function.

Example 4 – MySQL YEARWEEK() with Now() Function

To extract part of the year and week from the current date and time (which is now returned using the () function); as follows:

  SELECT 
  NOW(),
  WEEK(NOW());

Output-4

+---------------------+--------------------+
| NOW()               | YEARWEEK(NOW())    |
+---------------------+--------------------+
| 2019-07-10 18:30:44 |          201927    |
+---------------------+--------------------+

Example 5 – MySQL YEARWEEK() + CURDATE() Function

Let’s take an example using curdate() and yearweek() function; as follows:

SELECT 
CURDATE(),
YEARWEEK(CURDATE());

Output-5

+------------+-----------------------+
| CURDATE()  | YEARWEEK(CURDATE())   |
+------------+-----------------------+
| 2019-05-15 |            201927     |
+------------+-----------------------+

Take a Look More Examples

Let’s take some MySQL YEARWEEK function examples and find out how to use the YEARWEEK function in MySQL.

mysql> SELECT YEARWEEK('2014-01-01');
Result: 201352

mysql> SELECT YEARWEEK('2014-01-05');
Result: 201401

mysql> SELECT YEARWEEK('2014-01-12');
Result: 201402

mysql> SELECT YEARWEEK('2014-07-16');
Result: 201428

mysql> SELECT YEARWEEK('2014-12-31');
Result: 201452

mysql> SELECT YEARWEEK('2015-01-01');
Result: 201452

Conclusion

MySQL YEARWEEK() Function tutorial, You have learned how to use mysql MONTH() function with various examples.

MySQL YEARWEEK() Function