Fonction MySQL SEMAINE()

Renvoie le numéro de semaine d'une date :

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

Définition et utilisation

La fonction WEEK() renvoie le numéro de semaine pour une date donnée (un nombre de 0 à 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

Travaille dans:	Depuis MySQL 4.0

Renvoie le numéro de semaine d'une date :

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

Renvoie le numéro de semaine pour la date système actuelle :

SELECT WEEK(CURDATE());