我如何才能获得MySQL的最后10周？

Question

SELECT WEEK( `date_posted` ) AS week, COUNT( 1 ) AS aantal
FROM `news`
GROUP BY week
ORDER BY week DESC
LIMIT 0 , 10

这不起作用。输出是：

    week  aantal
    52  41
    51  56
    50  49
    49  56
    48  62

但是，我们还没有在第52周。出了什么问题？

Answer 1

我认为你需要一个WHERE条款：

SELECT WEEK( `date_posted` ) AS week, COUNT( 1 ) AS aantal
FROM `news` 
WHERE `date_posted` >= (curdate() - interval 10 week)
GROUP BY week
ORDER BY week DESC
LIMIT 0 , 10