var strSQL = new StringBuilder();
            strSQL.Append("declare @rodno varchar(50) ");
            strSQL.Append("set @rodno = @GetRod ");
            strSQL.Append("SELECT 'aaa'  AS Type,a.rodNO as RodNO,a.starttime  AS Starttime,b.endtime  AS Endtime ");
            strSQL.Append("FROM PRO_COREVAD_BEGIN a,PRO_COREVAD_END b ");
            strSQL.Append("WHERE a.rodNO=@rodno ");
            strSQL.Append("AND a.rodNO=b.rodNO ");
            strSQL.Append("union ");
            strSQL.Append("SELECT 'bbb'  AS Type,a.rodNO,a.starttime,b.endtime ");
            strSQL.Append("FROM PRO_Coresinter_BEGIN a,PRO_Coresinter_END b ");
            strSQL.Append("WHERE a.rodNO LIKE (@rodno+'%') ");
            strSQL.Append("AND a.rodNO=b.rodNO ");
            strSQL.Append("union ");
            strSQL.Append("SELECT 'ccc'  AS Type,c.rodNo,a.starttime,b.endtime ");
            strSQL.Append("FROM PRO_CoreVacuumdegass_BEGIN a,PRO_CoreVacuumdegass_END b,PRO_CoreVacuumdegass_BatchInfo c ");
            strSQL.Append("WHERE c.rodNO LIKE (@rodno+'%') ");
            strSQL.Append("AND a.batchid=b.batchid AND a.batchid=c.batchid AND c.batchid = (SELECT MAX(batchid) ");
            strSQL.Append("FROM PRO_CoreVacuumdegass_BatchInfo ");
            strSQL.Append("WHERE rodNo LIKE (@rodno+'%')) --ddd");
 SqlParameter[] parameters = {
                                            new SqlParameter("@GetRod", SqlDbType.VarChar,50)
                                        };
            parameters[0].Value = rodno;
            var ds = SQLHelper.GetDs(strSQL.ToString(), parameters);