SQL Server到LINQ组通过有

Question

我正在学习LINQ。

我在SQL Server中：

create table Something(id int, num int) 

insert into Something(id, num) values(1, 10); 
insert into Something(id, num) values(1, 10); 
insert into Something(id, num) values(2, 7); 
insert into Something(id, num) values(2, 7); 
insert into Something(id, num) values(2, 7); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(3, 5); 
insert into Something(id, num) values(4, 5); 

select id 
from something 
group by id, num 
having count(*) < num 

结果是：4，2和1

我想在LINQ：

var query = 
(from m in lst 
group m by new { m.id, m.num } into g 
where g.Count() < m.num).ToList(); 

我想比较g.Count （）与“num”字段，但在我的代码有问题

Thansk为您提供帮助！

Answer 1

尝试g.key.num而不是m.num：

var query = 
(from m in lst 
group m by new { m.id, m.num } into g 
where g.Count() < g.key.num).ToList();