MySQL: DAYOFWEEK Function

This tutorial explains how to use the MySQL DAYOFWEEK function with syntax and examples.

Description

The MySQL DAYOFWEEK function returns the weekday index for a date value.

Syntax

The syntax for the DAYOFWEEK function in MySQL is:

DAYOFWEEK( date_value )

Parameters or Arguments

date_value

The date or datetime value from which to extract the day of the week.

Note

• The DAYOFWEEK function returns the weekday index where 1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thursday, 6=Friday, 7=Saturday.

Applies To

The DAYOFWEEK 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 DAYOFWEEK function examples and explore how to use the DAYOFWEEK function in MySQL.

For example:

mysql> SELECT DAYOFWEEK('2014-01-27');
Output: 2

mysql> SELECT DAYOFWEEK('2014-01-28');
Output: 3

mysql> SELECT DAYOFWEEK('2014-01-29');
Output: 4

This last DAYOFWEEK example would display the weekday index for the current system date (current system date is returned by the CURDATE function).

mysql> SELECT DAYOFWEEK(CURDATE());