| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Chris Cleveland <ccleve+github(at)dieselpoint(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Possible to go without page headers? |
| Date: | 2022-02-14 22:45:30 |
| Message-ID: | 2955522.1644878730@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Peter Geoghegan <pg(at)bowt(dot)ie> writes:
> It isn't actually necessary for an index AM to use the standard
> slotted page format to get the benefits that you mention, of course --
> whether or not an index AM that uses standard page headers *also* uses
> slotted pages with standard line pointers is a separate question.
Right, you don't need to use a line pointer array if you don't want
to. (IIRC, hash also opts out of that in some pages.) I took the
question to be just about the page header proper.
regards, tom lane
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