fixed size columns

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От elein
Тема fixed size columns
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Msg-id 200304300041.h3U0fWBU044210@pimout1-ext.prodigy.net
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Ответы Re: fixed size columns  (Tom Lane <tgl@sss.pgh.pa.us>)
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I have a very long, very narrow table that is taking up a few gigabytes.
The table is defined with varchar(n) fields and some character(n) fields.
I am assuming that the majority of all fields are filled.

Are these rows being stored on disk as aligned varlenas? Can I squish out some
space by arranging the columns to groups of 8 bytes? Or is each column
aligned separately on a new 8 byte boundary?  Or is this a futile exercise?

thanks,
elein

--
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elein@varlena.com     Database Consulting     www.varlena.com
              I have always depended on the [QA] of strangers.


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