Linq-to-SQL分組排序不正確

Question

嗨，有人可以幫助我將此tsql語句轉換爲C＃linq2sql嗎？

select [series] from table group by [series] order by max([date]) desc 

這是我迄今爲止 - 名單是不是在正確的順序..

  var x = from c in db.Table 
        orderby c.Date descending 
        group c by c.Series into d 
        select d.Key; 

Answer 1

你的LINQ orderby條款是不是做同樣的事情，你的SQL之一。在這裏，這應該解決它：

var query = from c in db.Table 
      group c by c.Series into d 
      orderby d.Max(item => item.Date) descending 
      select d.Key;