Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> What about moving the oid column out of the tuple header. This saves 4
> bytes in the header in cases where there is no oid on the table.
No it doesn't --- at least not on machines where MAXALIGN is eight
bytes.
I don't think this is worth the trouble...
regards, tom lane