Tutorials References Exercises Videos NEW Menu
Paid Courses Website NEW

MySQL Tutorial

MySQL HOME MySQL Intro MySQL RDBMS

MySQL SQL

MySQL SQL MySQL SELECT MySQL WHERE MySQL AND, OR, NOT MySQL ORDER BY MySQL INSERT INTO MySQL NULL Values MySQL UPDATE MySQL DELETE MySQL LIMIT MySQL MIN and MAX MySQL COUNT, AVG, SUM MySQL LIKE MySQL Wildcards MySQL IN MySQL BETWEEN MySQL Aliases MySQL Joins MySQL INNER JOIN MySQL LEFT JOIN MySQL RIGHT JOIN MySQL CROSS JOIN MySQL Self Join MySQL UNION MySQL GROUP BY MySQL HAVING MySQL EXISTS MySQL ANY, ALL MySQL INSERT SELECT MySQL CASE MySQL Null Functions MySQL Comments MySQL Operators

MySQL Database

MySQL Create DB MySQL Drop DB MySQL Create Table MySQL Drop Table MySQL Alter Table MySQL Constraints MySQL Not Null MySQL Unique MySQL Primary Key MySQL Foreign Key MySQL Check MySQL Default MySQL Create Index MySQL Auto Increment MySQL Dates MySQL Views

MySQL References

MySQL Data Types MySQL Functions

MySQL Examples

MySQL Examples MySQL Quiz MySQL Exercises

MySQL WEEK() Function

❮ MySQL Functions

Example

Return the week number for a date:

SELECT WEEK("2017-06-15");
Try it Yourself »

Definition and Usage

The WEEK() function returns the week number for a given date (a number from 0 to 53).

Syntax

WEEK(date, firstdayofweek)

Parameter Values

Parameter Description
date Required.  The date or datetime to extract the week number form
firstdayofweek

Optional. Specifies what day the week starts on. Can be one of the following:

  • 0 - First day of week is Sunday
  • 1 - First day of week is Monday and the first week of the year has more than 3 days
  • 2 - First day of week is Sunday
  • 3 - First day of week is Monday and the first week of the year has more than 3 days
  • 4 - First day of week is Sunday and the first week of the year has more than 3 days
  • 5 - First day of week is Monday
  • 6 - First day of week is Sunday and the first week of the year has more than 3 days
  • 7 - First day of week is Monday

Technical Details

Works in: From MySQL 4.0

More Examples

Example

Return the week number for a date:

SELECT WEEK("2017-10-25");
Try it Yourself »

Example

Return the week number for the current system date:

SELECT WEEK(CURDATE());
Try it Yourself »

❮ MySQL Functions