"Simon Riggs" <[EMAIL PROTECTED]> writes: > On Mon, 2007-03-05 at 14:31 -0500, Tom Lane wrote: >> Exactly what will these allow that you can't do with inspection of ctid >> etc? (I suspect your answer will be "can't see infomask", but I'd >> rather expose that as a new system column than invent functions like >> these.)
> Interesting idea, but aren't they keywords? How many system columns > would we need to represent each of the info flags? Just one; I was imagining just returning the whole bitmask. See http://archives.postgresql.org/pgsql-hackers/2005-02/msg00636.php > The other thing was the ability to see headers of dead tuples as well so > as to understand what is on the page in total, not just the visible > portion of it. Ah, that's a good point. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
