A desperate newbie question: I have a _lot_ of tables, where a crc checksum needs to be calculated after every insert/update on all fields (but OID and CRC). I have no problems writing my external crc function, but: What would be the most elegant way to achieve that? Could I use inheritance in a way to implement a rule / trigger function that calculates the checksum, and all derived tables would automatically inherit that function? How would the function know about the different columns? It would be a nightmare writing an extra function for each and every table. Up to now, the client software is calculating the checksum and iserting the value into the CRC column, but I would prefer to have this function on the server side and automatically executed without fail. Regards, Horst
