如何在Linq中将select和group by子句与条件组合在一起

Question

我正在与SQL Server数据库一起学习ASP.Net MVC，并陷入了Linq操作查询中。有人可以帮我将这个SQL查询转换为Linq吗？

SELECT ShipName, COUNT(*) AS ShipValues
FROM Invoinces GROUP BY ShipName HAVING COUNT(*) > 30

Answer 1

尝试一下

var result = Invoinces.GroupBy(x => x.ShipName)
                      .Where(y => y.Count() > 30)
                      .Select(o => new {ShipName = o.ShipName, Count = o.Count()});