还是问一个mysql的查询汇总的汇总问题
本帖最后由 setoy 于 2013-12-18 18:11:02 编辑
有五个人,uid分别是1~5
有对着这五个人打分的表格(某个人有可能没有得到过分数)
id uid scroe<br />
-------------<br />
1 1 1.5<br />
2 1 1.8<br />
3 2 -5.5<br />
4 1 0.8<br />
5 2 8.2<br />
6 1 -2<br />
7 4 3<br />
8 2 2.3<br />
--------------
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现在要统计他们所有人的分数,即使查询不到某个人的得分,也要显示0分,显示格式如下:
用户 分数 汇总分<br />
-----------------------<br />
1 1.5 2.1<br />
1 1.8 2.1<br />
1 0.8 2.1<br />
1 -2 2.1<br />
2 -5.5 5<br />
2 8.2 5<br />
2 2.3 5<br />
3 0 0<br />
4 3 3<br />
5 0 0<br />
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