Функция YEARWEEK() в MySQL

Возвращает год и номер недели для даты:

SELECT YEARWEEK("2017-06-15");

Определение и использование

Функция YEARWEEK() возвращает год и номер недели (число от 0 до 53) для заданной даты.

YEARWEEK(date, firstdayofweek)

Parameter	Description
date	Required. The date or datetime value to extract the year and week number from
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 has more than 3 days 2 - First day of week is Sunday 3 - First day of week is Monday and the first week has more than 3 days 4 - First day of week is Sunday and the first week has more than 3 days 5 - First day of week is Monday 6 - First day of week is Sunday and the first week has more than 3 days 7 - First day of week is Monday

Parameter

Description

date

Required. The date or datetime value to extract the year and week number from

firstdayofweek

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

Работает в:	Из MySQL 4.0

Возвращает год и номер недели для даты:

SELECT YEARWEEK("2017-10-25");

Возвращает год и номер недели для текущей системной даты:

SELECT YEARWEEK(CURDATE());