使用case将SQL组转换为Linq并按顺序排列

Question

我在sql查询中有一个Group by和Order by，如下所示，如何在linq中编写相同的逻辑？ ： -

  GROUP BY bd.bandcharge_desc, bd.rate 
  ORDER BY CASE 
           WHEN bd.bandcharge_desc LIKE '%above%' THEN 
             '1' 
           ELSE 
             '0' 
           END,
           bd.bandcharge_desc,bd.rate ASC

Answer 1

试试这种方式

orderby bd.bandcharge_desc.Contains("above")?1:0 descending ,
               bd.bandcharge_desc,bd.rate

Answer 2

试一试：

.OrderBy(bd => bd.bandcharge_desc.Contains("above") ? 1 : 0)
.ThenBy(bd => bd.bandcharge_desc)
.ThenBy(bd => bd.rate)
.GroupBy(bd => new {bd.bandcharge_desc, bd.rate})