I've had similar problems with Date and DateTime parameters so now I use TimeStamp instead.
ParamByName('DT').AsSQLTimeStamp := DateTimeToSQLTimeStamp(Trunc(EffluentRec.DT)); should work. Cheers, Carl _______________________________________________ Delphi mailing list Delphi@ns3.123.co.nz http://ns3.123.co.nz/mailman/listinfo/delphi