MySQL WEEK()- Funktion

Gibt die Wochennummer für ein Datum zurück:

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

Definition und Verwendung

Die WEEK()-Funktion gibt die Wochennummer für ein bestimmtes Datum zurück (eine Zahl von 0 bis 53).

WEEK(date, firstdayofweek)

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

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

Arbeitet in:	Ab MySQL 4.0

Gibt die Wochennummer für ein Datum zurück:

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

Gibt die Wochennummer für das aktuelle Systemdatum zurück:

SELECT WEEK(CURDATE());