日期:2014-05-20 浏览次数:20891 次
var query=from ep in JHExamPaper
join p in Paper on ep.PaperId equals p.Id
join s in Subject on p.SubjectId equals s.Id
join eps in ExamPaperStudent on ep.PaperId equals eps.PaperId into leftJoinGroup
from eps in leftJoinGrou.DefaultIfEmpty()
join r in Report on eps.Id equlas r.EPSId into Left
from r in Left.DefalutIfEmpty()
where eps.ExamId=="B39A5BEE-8021-4A0D-8CC2-4BDEFC580579" && eps.UserId=="110813D3-AF1D-41A2-9F39-B44604CA2BC6"
select new
{
p.Id,r.Id,s.Id,s.Name,p.Title,p.TotalScore
};