Re: pg_controldata doesn't report 64/32bit?

Gregory Stark wrote:
> "Gregory Stark" <stark@enterprisedb.com> writes:
> 
>> "Tom Lane" <tgl@sss.pgh.pa.us> writes:
>>
>>> Josh Berkus <josh@agliodbs.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.

What are we gaining here? A 32bit postmaster can't start a 64bit one... 
Running select version() will tell you if you are running 64 or 32bit...

What am I missing?

Joshua D. Drake

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