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From: James Cloos <cloos@jhcloos.com>
To: pgsql-sql@postgresql.org
Subject: using possibly null timestamptz columns
Date: Thu, 29 Sep 2016 08:35:30 -0400
Message-ID: <m3a8eqx4rx.fsf@carbon.jhcloos.org> (raw)
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-sql>

Given a table with a pair of timestamptz columns (lets call them s and e)
which are typically null, is there a better way to write this where clause
snippet:

    where ( s is null or s <= now() ) and ( e is null or e >= now() )

In particular I hope to ensure efficient indexes.

-JimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 0x997A9F17ED7DAEA6


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