Can anybodt give me a few examples on how to use heap_modifytuple() efficiently when I do NOT want to modify an attribute through a postgres function? All the examples given in the source seem to use some return of a postgres function (like current user etc). I just want to insert strings into a tuple cought in a trigger function. I tried to find some useful information regarding the "Datum" type, but I failed to understand how to use it here for my purposes. Any help appreciated - in exchange I volunteer to write proper documentation for heap_modifytuple() once I understood how to work it properly. Regards Horst