Re: Extract table columns in tabular form

From: Christopher Browne <cbbrowne(at)acm(dot)org>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Extract table columns in tabular form
Date: 2005-11-05 18:14:12
Message-ID: m3u0er6jyj.fsf@mobile.int.cbbrowne.com
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> How do you extract postgresql column names, types and comments in tabular form,
> using an SQL command?. I know they are stored in one of the system tables, but
> I don't know which.

- Table names are in pg_class

- Column names are in pg_attribute, associated to pg_class via
"where pg_attribute.attrelid = pg_class.oid"

- Comments are in pg_description... There seem to be links to both
pg_class and pg_attribute

- Type info is in pg_type, associated to pg_attribute via "atttypid"

There are attributes that you normally don't see, and "dropped"
attributes still exist in pg_attribute, so things are a tad more
complex than what I have said, but the above 4 tables should provide
you all you need...
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