MYSQL Select By Week

Question

我希望有用户可以看到他们上传的图像这一周。

这是正确的吗？

"SELECT * 
FROM images 
WHERE userid = '$userid' 
  AND uploadeddate >= DATEPART(week, uploadeddate) = DATEPART(week, GETDATE()) 
ORDER BY uploadeddate DESC";

我得到了错误。谢谢你的帮助。

Answer 1

SELECT  *
FROM    images
WHERE   userid = $userid
        AND uploadeddate >= CURDATE() - INTERVAL WEEKDAY(day) DAY
        AND uploadeddate < CURDATE() - INTERVAL WEEKDAY(day) DAY + INTERVAL 7 DAY

在(userid, uploadeddate)上创建索引，以便快速执行此操作。

Answer 2

以下查询将返回当前一周的记录。在SELECT中指定一个列列表也是最佳实践。

如果您使用的是SQL Server：

SELECT ... WHERE DATEPART(week, uploadeddate) = DATEPART(week, GETDATE())

如果您使用的是MySQL：

SELECT ... WHERE WEEK(uploadeddate) = WEEK(CURDATE())