student_id	fname	lname	day_enrolled	age	username
1	Sky	Towner	2015-12-03	17	stowner1
2	Ben	Davis	2016-04-20	19	bdavis2
3	Travis	Apple	2018-08-14	18	tapple3
4	Arthur	David	2016-04-01	16	adavid4
5	Benjamin	Town	2014-01-01	17	btown5

The above sample table can be created using the code here.

Basic usage

To return the day of year that current students enrolled:


        
        
            
                
                
                    SELECT fname, DAYOFYEAR(day_enrolled)
FROM students;
                
            
            +----------+-------------------------+
| fname    | DAYOFYEAR(day_enrolled) |
+----------+-------------------------+
| Sky      |                     337 |
| Ben      |                     111 |
| Travis   |                     226 |
| Arthur   |                      92 |
| Benjamin |                       1 |
+----------+-------------------------+

To return students who were enrolled before 200th day of the year:


        
        
            
                
                
                    SELECT fname, DAYOFYEAR(day_enrolled)
FROM students
WHERE DAYOFYEAR(day_enrolled) < 200;
                
            
            +----------+-------------------------+
| fname    | DAYOFYEAR(day_enrolled) |
+----------+-------------------------+
| Ben      |                     111 |
| Arthur   |                      92 |
| Benjamin |                       1 |
+----------+-------------------------+

To return day of year from a datetime:


        
        
            
                
                
                    SELECT DAYOFYEAR('2020-04-12 06:05:55');
                
            
            +----------------------------------+
| DAYOFYEAR('2020-04-12-06-05-55') |
+----------------------------------+
|                              103 |
+----------------------------------+

We now know that 12 April 2020 was the 103rd day in 2020.

Published by Arthur Yanagisawa

Edited by 0 others

Did you find this page useful?

thumb_up

thumb_down

Comment

Citation

Ask a question or leave a feedback...

Official MySQL Documentation

https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_dayofyear

thumb_up

thumb_down

chat_bubble_outline

settings

Enjoy our search

Hit / to insta-search docs and recipes!