MySQL WEEKDAY() Function

The MySQL WEEKDAY() function returns the weekday index of a given date or datetime value where 0=Monday, 1=Tuesday, 2=Wednesday, 3=Thursday, 4=Friday, 5=Saturday, 6=Sunday.

Syntax

WEEKDAY(datetime)

Parameters

datetime Required. Specify a date or datetime value from which to extract the weekday index.

Return Value

Returns the weekday index of a given date or datetime value.

Example 1:

The example below shows the usage of WEEKDAY() function.

mysql> SELECT WEEKDAY('2018-08-18');
Result: 5

mysql> SELECT WEEKDAY('2018-08-18 10:38:42');
Result: 5

mysql> SELECT WEEKDAY('2018-08-18 10:38:42.000004');
Result: 5

mysql> SELECT WEEKDAY('2014-10-20');
Result: 0

mysql> SELECT WEEKDAY(CURDATE());
Result: 2

Example 2:

Consider a database table called Orders with the following records:

OrderQuantity	Price	OrderTime
100	1.58	2017-08-18 10:38:42
120	1.61	2018-03-23 07:14:16
125	1.78	2018-09-12 05:25:56
50	1.80	2019-01-16 11:52:05
200	1.72	2020-02-06 09:31:34

The statement given below can be used to get the weekday index of records of column OrderTime:

SELECT *, WEEKDAY(OrderTime) AS WEEKDAY_Value FROM Orders;

This will produce the result as shown below:

OrderQuantity	Price	OrderTime	WEEKDAY_Value
100	1.58	2017-08-18 10:38:42	4
120	1.61	2018-03-23 07:14:16	4
125	1.78	2018-09-12 05:25:56	2
50	1.80	2019-01-16 11:52:05	2
200	1.72	2020-02-06 09:31:34	3

❮ MySQL Functions