日期:2014-05-20 浏览次数:20629 次
var query = Viewstscore.Where(y => (from x in Viewstscore group x by x.stu_id into g select g.Key).Contains(y)).Select(x => x);
------解决方案--------------------
var query = Viewstscore.Where(y => (from x in Viewstscore group x by x.stu_id into g select g.Key).Where(z => z.Count() > 1).Contains(y)).Select(x => x);