> I agree with the idea,but am trying to understand why adding understanding of
> resjunk columns is a bad idea. Just for understanding purpose, could you
please
> elaborate a bit on it?
Although I may not have understood your question correctly, I think it is good
to see
http://www.postgresql.org/message-id/14993.1354552292@sss.pgh.pa.us
Best regards,
Etsuro Fujita
