Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>,
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gregory Stark <stark(at)enterprisedb(dot)com>,
PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject:
toast by chunk-end (was Re: PG_PAGE_LAYOUT_VERSION 5 - time forchange)
Zdenek Kotala wrote:
> Alvaro Herrera napsal(a):
>> Heikki Linnakangas wrote:
>>
>>> Hmm, you're right. I think it can be made to work by storing the
>>> *end* offset of each chunk. To find the chunk containing offset X,
>>> search for the first chunk with end_offset > X.
>>
>> FWIW I'm trying to do this. So far I've managed to make the basic thing
>> work, and I'm about to have a look at the slice interface.
Okay, so this seems to work. It's missing writing the sanity checks on
the returned data, and a look at the SGML docs to see if anything needs
updating. I'm also going to recheck code comments that may need
updates.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
