I am new to this group so forgive me if this is the wrong area to post in. I have some field data which comes off of a data logger. In some cases the data is out of bounds of logger or instrumentation. In which case it is reported as 'NaN' for 'not a number.' Is there such a value in postgresql? If not I will have to hack it in with a boolean and would rather not do so. TIA ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings