如何將T-SQL轉換爲LINQ

Question

我在T-SQL查詢中有以下代碼，我需要將其轉換（重寫）爲LINQ。有人能幫助我嗎？由於

SELECT (select max(X.PocetDniPoPlatnosti) 
from 
(

select 

(select top 1 datediff(day,datumplatnosti,getdate()) from planrealizace p 
where p.cinnostsopidsop = cinnostsop.idsop and datumplatnosti <= getdate() and p.provest = 1 and p.datumprovedeni is null 
order by p.datumplatnosti desc) as PocetDniPoPlatnosti 

from cinnostsop 
where cinnostSOP.LegislativneVyznamna = 1 and (CinnostSOP.ObjektId = 131476)) X) as PoPlatnosti 

Answer 1

這應該工作，但我不能嘗試，因爲我沒有在家裏的任何編程工具，可以隨意讓我知道，如果這行不通，我們可以一起提高它

var max = (from cp in cinnostsop.Where(c => c.LegislativneVyznamna = 1 && c.ObjektId = 131476) 
      join p in (
       planrealizace. 
       Where(pz => pz.datumplatnosti <= DateTime.Now && 
          pz.provest = 1 and pz.datumprovedeni is null). 
       GroupBy(pz => pz.cinnostsopidsop, pz => pz). 
       Select(g => 
        new { 
          id = g.Key, 
          firstdate = (g.OrderByDescending(
               pz => pz.datumplatnosti). 
              First().datumplatnosti - DateTime.Now 
             ).Totaldays 
         }) 
       ) on cp.idsop equals p.id 
      select p.firstdate).Max(d => d);