MySQL DAYOFWEEK() function

DAYOFWEEK() function

MySQL DAYOFWEEK() returns the week day number (1 for Sunday,2 for Monday …… 7 for Saturday ) for a date specified as argument.

This function is useful in -

• DAYOFWEEK() is used to categorize, analyze, and visualize data based on the day of the week.
• It's useful for identifying patterns, trends, or variations that occur on specific days.
• By using DAYOFWEEK(), you can obtain numeric values that represent days, which can be translated into day names for labeling or presentation purposes.
• DAYOFWEEK() is valuable for analyzing business operations that vary by day of the week, such as customer behavior, sales, or website traffic.
• In queries that involve filtering data based on specific days, DAYOFWEEK() helps categorize days and allows accurate filtering.
• DAYOFWEEK() aids in optimizing schedules and operations that vary by day of the week, such as planning promotions or adjusting staff shifts.
• When aligning dates with day-specific activities, DAYOFWEEK() ensures accurate alignment with the appropriate days.

Syntax:

DAYOFWEEK(date)

Where date is a date.

Syntax Diagram:

MySQL Version: 8.0

Pictorial Presentation:

Example: MySQL DAYOFWEEK() function

The following statement will return the week day number of the specified date 2008-05-15.

Code:

SELECT DAYOFWEEK('2008-05-15');

Output:

mysql> SELECT DAYOFWEEK('2008-05-15');
+-------------------------+
| DAYOFWEEK('2008-05-15') |
+-------------------------+
|                       5 | 
+-------------------------+
1 row in set (0.00 sec)

Video Presentation:

All Date and Time Functions:

Click here to see the MySQL Date and time functions.

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