Hi D'Arcy, > It's not that I think that the primary key should never have > meaning in the database (I use the two letter country code as > the PK in my country table for example) I just think that > it's dangerous ground and should be tread very carefully.
You are right. I now realize that I have done exactly the same thing in my database designs :) In 95+% of the cases I would choose a serial, but this is a good counter-example. Thanks for making me think :) Sander ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match