Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> writes:
> By the way, do you need CRC as a first page member? Is it for future development
> like CLOG integration into buffers? Why not put it on the end as and mark it as
> a special? It will reduce space requirement when CRC is not enabled.
... and make life tremendously more complex for indexes, plus turning
CRC checking on or off on-the-fly would be problematic. I think Alvaro
has the right idea: just put the field there all the time.
regards, tom lane