how to execute tspurgefunction for rolling container

so, i tried to load creates a control file named regular_purge.unl to delete elements from time series instances: but it return error 674: routine(getcontainername) cannot be resolved. UNLOAD TO 'regular_purge.unl' SELECT GetContainerName(para_id),InstanceId(para_id),GetIndex(para_id,'2011-10-01 23:45:00.00000'::datetime year to fraction(5))::varchar(25) FROM meter_ts_tbl ; ------------------------------ nasiha zailan ------------------------------ #Informix

This worked for me against my timeseries database. Is "para_id" the timeseries column in the meter_ts_tbl, and not just the key of the table? ------------------------------ Mike Walker xDB Systems, Inc www.xdbsystems.com ------------------------------