好吧，如果你不在乎哪个员工被删除，你可以尝试这样的：

Okay, if you don't care which employee is removed, you could try something like:

var result = query.GroupBy(x => x.EmployeeId)
                  .Select(group => group.First());

您还没有指定这是否是LINQ to SQL中的LINQ to Objects还是其他什么东西......我不知道这个SQL转换将是什么。如果你正在处理的数据量相对较少，你可以总是强制此最后一点是在工艺：

You haven't specified whether this is in LINQ to SQL, LINQ to Objects or something else... I don't know what the SQL translation of this would be. If you're dealing with a relatively small amount of data you could always force this last bit to be in-process:

var result = query.AsEnumerable()
                  .GroupBy(x => x.EmployeeId)
                  .Select(group => group.First());

在这一点上，你可以实际使用 MoreLINQ 它有一个方便的DistinctBy$c$c>方法：

At that point you could actually use MoreLINQ which has a handy DistinctBy method:

var result = query.AsEnumerable()
                  .DistinctBy(x => x.EmployeeId);