Question

我有以下查询，我没有实现，它有两个不同的表左连接

SELECT p.FirstName, p.LastName, u.UserName FROM 
 [APT2016_WEBDATA].[dbo].AspNetProfile p

 LEFT JOIN [APT2016_WEBDATA].[dbo].AspNetUsers u
 ON p.UserId = u.Id

 LEFT JOIN [APT2016_PFDATA].[dbo].[PF_Member] pf
 ON p.MemberId = pf.MemberUID

 WHERE pf.MemberUID IS NULL AND (p.FirstName IS NOT NULL OR p.LastName IS NOT NULL)

它会返回正确的4300结果，但是当我将其实现到实体框架中时，它会返回29000+个结果，并带有以下代码

var result = (from p in AspNetProfiles

    join u in AspNetUsers on p.MemberId equals u.MemberUID 

    join m in PF_Member on p.MemberId equals m.MemberUID into msp
    from pfm in msp.DefaultIfEmpty()

    where pfm == null && (p.FirstName != null || p.LastName != null)
    //where msp.FirstOrDefault() == null

    select new UsersWithoutMemberViewModel
    {
        UserName = "",
        FirstName = p.FirstName,
        LastName = p.LastName
    }).ToList();

有人可以帮我解决问题

更新

如果我删除带有join表的AspNetUsers，它将返回所需的正确数据量，但在这种情况下，我将丢失我将从此UserName获取的数据join 1}}

无法将查询转换为实体框架表单

0 个答案: