如果一个字段为两个不同字段的查询方法

 public List<BLD_TKQualitySnapshot> GetBLDTKQualitySnapshotListForSourceTank(long jobId, string destinationTank)        {            var result = from entity in BOMDataBase.BLD_TKQualitySnapshots                         where entity.TankCode != destinationTank                         join sm in BOMDataBase.BLD_TKSnapshotMasters on entity.TKSnapshotMasterID equals sm.SnapshotMasterID                         where (sm.JobActionType == (int)JobAction.Released || sm.JobActionType == (int)JobAction.SwingFinish)                          && sm.JobID == jobId                         select entity;            return result.ToList();        }