How to use WEEKDAY in MySQL

WEEKDAY(date)

SELECT WEEKDAY(‘2016-01-16') 
SELECT WEEKDAY(‘2016-01-16 00:00:00')

-> 5 (表示返回date是在一周中的序号，西方日历中通常一周的开始是星期天，并且以0开始计数，所以，记住：0=星期一，1=星期二， ... 5=星期六)

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