自己写的临时表应用

 #region Query
        /// <summary>
        /// 获取记录
        /// </summary>
        public static List<PermissionLogView> GetList(int managerId)
        {
            string sql = @"DECLARE @temp table
(
  id int identity(1,1),
  PermissionID nvarchar(200)
)
declare @pid nvarchar(200)
declare @n        int
declare @rows     int
select @n=1
insert @temp(PermissionID) select  DISTINCT PermissionID  from [PermissionLog] WHERE PermissionType=0 AND ManagerID={0}
select @rows = @@rowcount
while @n <= @rows
begin
select @pid = PermissionID
from PermissionLog
     where PermissionID=(select PermissionID from @temp where id = @n)
     DECLARE @tempTable TABLE
                (
                [ID] INT,
                [FullName] varchar(100)
                )
                DECLARE @ID INT
                DECLARE @OldID INT
                DECLARE @FullName NVARCHAR(50)
                DECLARE @OldFullName NVARCHAR(50)
                DECLARE @i INT
                SET @ID=@pid
                SET @OldID=@ID

                SET @OldFullName=''
                SET @i=0
                WHILE(@ID>0)
                BEGIN
                     if(@ID>0)
                        begin
                      select @FullName=Name from channel where ID=@ID;
                      IF(@i=0)
                        BEGIN
                         SET @OldFullName=(@FullName);
                        END
                     ELSE
                       BEGIN
                         SET @OldFullName=(@FullName+'->'+@OldFullName);
                       END
                      SET @i=@i+1;
                    SELECT @ID=ParentId from Channel where ID=@ID;
                        END
                END
                 INSERT into @tempTable VALUES(@OldID,@OldFullName);
          select @n = @n + 1
        END ";
            sql += @"SELECT um.ManagerName,mc.FullName,plog.* FROM [PermissionLog] plog WITH(NOLOCK)
                           JOIN UnionManager um WITH(NOLOCK) ON plog.ManagerID = um.ID
                           JOIN MediumCategory mc WITH(NOLOCK) ON mc.ID=plog.PermissionID
                           WHERE ManagerId={0}
                           UNION
                           SELECT um.ManagerName ,mc.FullName+'->'+m.Name AS FullName,plog.* FROM [PermissionLog] plog WITH(NOLOCK)
                           JOIN UnionManager um WITH(NOLOCK) ON plog.ManagerID = um.ID
                           JOIN Medium m WITH(NOLOCK) ON m.ID=plog.PermissionID
                           JOIN dbo.MediumCategory mc ON mc.ID=m.CategoryID
                          WHERE ManagerId={0}";
            sql +=
                @" UNION
                SELECT um.ManagerName,FullName,plog.* FROM [PermissionLog] plog
                JOIN UnionManager um WITH(NOLOCK) ON plog.ManagerID = um.ID
                JOIN @tempTable temp ON plog.PermissionID=temp.ID";
            sql += " WHERE ManagerId={0} ORDER BY plog.OperateTime desc ";
            var dbHelper = new DbHelperSQL(ConnectionString.Vancl_Union);
            return DataTableToList(dbHelper.GetDataTable(string.Format(sql, managerId)));
        }