表模式设置如下:
userID Points timestamp
1 40
3 20
1 10
4 15
3 5
需要能够提供显示以下内容的报告:
Total Points Allocated for the Day (0 if none allocated), (nice to have) To what userID's the points were allocated to for that day
我尝试了以下,你可以看到不正确
SELECT uid, DATE(time_stamp) AS date, SUM(points) AS total_points
FROM table
GROUP BY date