mysql - PHP MySQL 选取周一到周五的所有数据或选取上周工作日的所有数据

Question

我是mysql新手，不知道如何选择 上周周一到周五的数据？假如说 今天是星期一。到目前为止，这是我尝试过的方法，但它返回了一个空结果:

SELECT * , SUM(time) AS total_project_hours
FROM task
WHERE DATE_SUB(NOW(), INTERVAL 1 WEEK ) BETWEEN 0 AND 4 AND deleted='n'
GROUP BY project_id

Answer 1

使用 DAYOFWEEK http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_dayofweek

SELECT * , SUM(time) AS total_project_hours FROM task WHERE DAYOFWEEK(date) >= 2 AND DAYOFWEEK(date) <= 6;