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Re: Quickly calculating row size of a table? - Mailing list pgsql-general

From Tom Lane
Subject Re: Quickly calculating row size of a table?
Date
Msg-id 6118.1130338493@sss.pgh.pa.us
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In response to Re: Quickly calculating row size of a table?  ("Jared Evans" <jnevans@gmail.com>)
List pgsql-general
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"Jared Evans" <jnevans@gmail.com> writes:
> dbn=# SELECT relname, relpages*8192/reltuples from pg_class where
> reltuples <> 0 and relname not like 'pg%';

That calculation lumps free space (and page header overhead and so on)
into the size of the tuples.

            regards, tom lane

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