From: Wayne Cuddy <lists-pgsql@useunix.net>
To: PostgreSQL <pgsql-sql@postgresql.org>
Subject: can this be done with a check expression?
Date: Thu, 2 Aug 2012 19:10:43 -0400
Message-ID: <20120802231043.GA16173@slacker.ja10629.home> (raw)
I have a table with 3 columns:
name text
start_id integer
end_id integer
start_id and end_id are ranges which must not overlap but can have gaps
between them. Is it possible to formulate a table check constraint that
can verify that either id does not fall within an existing range at
insert time? IE prevent overlaps during insert?
Thanks,
Wayne
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To: pgsql-sql@postgresql.org
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Subject: Re: can this be done with a check expression?
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