SQL开发知识：C# ling to sql 取多条记录最大时间

具体代码如下所述：

var _setList = (from f in _postgreDbContext.settlements
group f by ( new { f.settlement_code })into g
select new
{
deal_time = g.Max(m => m.deal_time),
g.Key.settlement_code
}).AsNoTracking().ToList();