拥有T-SQL查询:
select [ProductNumber] ,max([ProductRevNumber])
from Products
group by [ProductNumber]
尝试LINQ查询:
ProductsDBContext.Products.GroupBy(x => x.ProductRevNumber)
.Select(group => ProductNumber,
ProductRevNumber = group.Max(x => x.ProductRevNumber));
lambda查询不起作用。
答案 0 :(得分:6)
我认为这就是你所追求的目标:
var latestProducts = ProductsDBContext.Products
.GroupBy(p => p.ProductNumber).Select(g => new
{
ProductNumber = g.Key,
MaxProductRevNumber = g.Max(p => p.ProductRevNumber))
});
答案 1 :(得分:2)
from p in db.Products
group p by p.ProductNumber into g
select new
{
ProductNumber = g.Key,
ProductRevNumber = g.Max(p => p.ProductRevNumber)
};