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我想弄清楚结合这两个LINQ查询的方法。第一个创建一个假期客户列表,第二个根据电子邮件地址解析列表。结合LINQ查询获取唯一记录
什么是最简洁的组合方式?
var allNonBuyers = (from a in allCustomers
where !(from q in db.Quotes
where q.CreationDate > DateTime.Now.AddMinutes(duration)
join p in db.Passengers on q.QuoteGUID equals p.QuoteGUID
where q.PolicyNumber != null
select p.EmailAddress).Contains(a.EmailAddress)
select new { a.QuoteGUID, a.Title, a.FirstName, a.LastName, a.EmailAddress, a.Telephone });
var distinctNonBuyers = from buyer in allNonBuyers
group buyer by buyer.EmailAddress
into gbuyer
select gbuyer.First();
因此,要保持事情相当简单和可读,最好的做法是多查询? – FloatLeft 2011-02-03 12:43:53