ExecuteStoreQuery將參數傳遞給SQL語句

Question

有人可以幫助將參數對象傳遞到我的ExecuteStoreQuery。我從我的實體數據庫執行此操作，然後即時創建我的過程是可能的，並且是我的SQL正確。我需要一個Id參數值傳遞到我的SQL語句

var node = db.ExecuteStoreQuery<Node>(@" 
    @Id int // not sure about this declaration for parameter  

    with c as (
     select Id, Name, ParentId,[0] as level 
     from Department d 
    union all 
     select d.Id, d.Name, d.ParentId, [level] + 1 
     from Department d 
     join c on d.ParentId = c.Id) 
    select * from c where c.Id = @Id"               
"Departments", 
System.Data.Objects.MergeOption.NoTracking, 
new object{ Id: department.Id} // <--parameter object not working);    

Answer 1

按照MSDN documentation，您的語句需要更多的像閱讀：

var node = db.ExecuteStoreQuery<Node>(@" 
    with c as (
     select Id, Name, ParentId,[0] as level 
     from Department d 
    union all 
     select d.Id, d.Name, d.ParentId, [level] + 1 
     from Department d 
     join c on d.ParentId = c.Id) 
    select * from c where c.Id = @Id"               
"Departments", 
System.Data.Objects.MergeOption.NoTracking, 
new SqlParameter{ ParameterName = "id", Value = department.Id});