How to get the day of the week in SQL

How to get the day of the week in SQL

In SQL, the DAYOFWEEK function is used to return the day of the week for a given date. This function takes a date value as an argument and returns an integer value representing the day of the week, with 1 being Sunday and 7 being Saturday.

Here is an example of how to use the DAYOFWEEK function in SQL:

SELECT DAYOFWEEK('2022-12-02')

In this example, the DAYOFWEEK function is used to return the day of the week for the date '2022-12-02'. The function returns the integer value 5, which represents the day of the week (Friday).

The DAYOFWEEK function can be useful when you want to determine the day of the week for a given date, or when you want to group or filter records by the day of the week.

You can use the returned integer value in a WHERE clause or a GROUP BY clause to perform these types of operations.

The behavior of the DAYOFWEEK function can vary depending on the database management system you are using.

Some systems may use different numbering schemes for the days of the week, or they may return the day of the week as a string value instead of an integer.

Conclusion

The DAYOFWEEK function is used to return the day of the week for a given date. This function takes a date value as an argument and returns an integer value representing the day of the week, with 1 being Sunday and 7 being Saturday.