我熟悉 SQL 的工作方式，但使用 LINQ to SQL 让我很头疼。我有以下查询，但我无法将其更改为 LINQ to SQL。有人可以帮我解决这个问题或解释我如何解决这个问题吗？
SELECT
DISTINCT Pr.Pcode_,
Pr.Omschrijving,
Pt.TypeOmschr
FROM
Projecten AS Pr
INNER JOIN
ProjectTypen AS Pt
ON Pr.ProjType_ = Pt.TypeID
AND
Pr.Status NOT IN ( 'Afgerond', 'Afgewezen' )
LEFT OUTER JOIN
Personeel AS Pe
ON Pr.SeniorId_ = Pe.PerId_
OR
Pr.CorId_ = Pe.PerId_
WHERE
( Pe.Naam LIKE '%%' )
OR
( Pr.Omschrijving LIKE '%%' )
OR
( Pr.Pcode_ LIKE '%%' )
OR
( Pt.TypeOmschr LIKE '%%' )
ORDER BY
Pr.Pcode_
编辑：
我有以下 L2S，但它不工作。我收到以下错误：名称“Pe”不在“等于”左侧的范围内。我想问题是左连接，但解决方案是什么？
from Pr in _db.Projectens
join Pt in _db.ProjectTypens on Pr.ProjType_ equals Pt.TypeID
join Pe in _db.Personeels on ((Pr.SeniorId_ == Pe.PerId_) || (Pr.SeniorId_ == Pe.PerId_)) into P
where Pr.Pcode_.Contains(search) || Pr.Omschrijving.Contains(search) || Pt.TypeOmschr.Contains(search) || Pe.Naam.Contains(search)
select new SearchProjectViewModel {
ProjectCode = Pr.Pcode_,
ProjectName = Pr.Omschrijving,
ProjectType = Pt.TypeOmschr
};