| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Combo xids |
| Date: | 2013-06-01 18:34:15 |
| Message-ID: | CA+U5nMJ9OmRNnMEGH8dB14hsME1PiYjZCA668ibNsphj8UJwhA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 1 June 2013 19:25, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> wrote:
> Hmm, it would probably be much easier to squeeze, say, one byte from the
> tuple header, than full four bytes. Then you could store store a null bitmap
> for upto 16 columns, without crossing the 24 byte mark. That would already
> get you much of the benefit.
It seemed worth recording the idea, though I agree that now its
recorded its not the best idea for reducing table size.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Simon Riggs | 2013-06-01 18:36:47 | Re: [BUGS] COPY .... (FORMAT binary) syntax doesn't work |
| Previous Message | Heikki Linnakangas | 2013-06-01 18:25:16 | Re: Combo xids |