将SQL转换为Linq - Where，in，Group By和Count count

Question

如何将此查询从SQL写入LINQ：

SELECT * FROM table
WHERE np in 
(
    SELECT np FROM table
    GROUP BY np 
    HAVING COUNT(np) > 1

Answer 1

这样的事情：

<Table>.GroupBy(x => x.np)
       .Where(x => x.Count() > 1)
       .SelectMany(x => x)