C# Linq to Entity使用方法语法从左表和右表的0或1返回记录？

我试图从主表返回一条记录，并将其连接到可能返回或不返回记录的辅助表。如果可能的话，我需要使用方法语法来完成这项工作

我现在的问题是

 Organizations.Where(a=>a.OrganizationId==10033)
        .Join(Addresses, org => org.ClientId, addy => addy.ClientId, (org, addy) => new { org, addy })
        .Join(Contacts, o => o.org.OwnerClientId, c => c.ClientId, (o, c) => new { o, c })
        .Select(a => new Establishment
        {
            Name = a.o.org.Name,
            City = a.o.addy.PhysicalAddressCity,
            State = a.o.addy.PhysicalAddressState,
            Id = Convert.ToInt32(a.o.org.OrganizationId),
            AddressLine = a.o.addy.PhysicalAddressLine,
            ZipCode = a.o.addy.PhysicalFullPostal,
            AssignedInspector = "Jacques Clouseau",
            ManagerName = a.c.LastName
            }).FirstOrDefault()

如果联系人表中有匹配的记录，则返回正确的信息，但即使没有联系人，我也需要它返回组织和地址

这是否可以使用方法语法

*****补充说明：

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忘了提到这是在使用EF Core 3.0

您需要使用GroupJoin：

Organizations.Where(a=>a.OrganizationId==10033)
        .Join(Addresses, org => org.ClientId, addy => addy.ClientId, (org, addy) => new { org, addy })
        .GroupJoin(Contacts, o => o.org.OwnerClientId, c => c.ClientId, (o, contact) => new { o, c = contact.FirstOrDefault() })
        .Select(a => new Establishment
        {
            Name = a.o.org.Name,
            City = a.o.addy.PhysicalAddressCity,
            State = a.o.addy.PhysicalAddressState,
            Id = Convert.ToInt32(a.o.org.OrganizationId),
            AddressLine = a.o.addy.PhysicalAddressLine,
            ZipCode = a.o.addy.PhysicalFullPostal,
            AssignedInspector = "Jacques Clouseau",
            ManagerName = a.c.LastName
            }).FirstOrDefault()

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使用导航属性。不加入。这是一组关于PK和FKs的非常粗糙的旧表。