From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
---|---|
To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "Josh Berkus" <josh(at)agliodbs(dot)com>, <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: pg_controldata doesn't report 64/32bit? |
Date: | 2007-12-08 06:48:37 |
Message-ID: | 87y7c5of5m.fsf@oxford.xeocode.com |
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Lists: | pgsql-hackers |
"Gregory Stark" <stark(at)enterprisedb(dot)com> writes:
> "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
>> Josh Berkus <josh(at)agliodbs(dot)com> writes:
>>> I've just noticed that pg_controldata doesn't say anything about whether
>>> the database is 64-bit or 32-bit.
>>
>> That's because there is no such concept.
>
> I think the relevant concept is whether Datum is 32-bit or 64-bit wide.
Oh, I see what you meant now. Datum is a purely in-memory concept, it doesn't
actually reach disk.
We could always tighten this up a bit by listing the alignment of a handful of
built-in data types but I suppose there will always be holes in this area
anyways.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Ask me about EnterpriseDB's 24x7 Postgres support!
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