From: Neil Harkins <nharkins@well.com>
To: pgsql-sql@postgresql.org
Subject: concatenation with a null column (using ||) nulls the result?
Date: Mon, 10 Apr 2006 14:36:47 -0700 (PDT)
Message-ID: <Pine.SOL.4.10.10604101430250.2779-100000@well.com> (raw)
inventory=> SELECT cabinets_name, cabinets_description
FROM cabinets WHERE cabinets_datacenters = 2;
cabinets_name | cabinets_description
---------------+----------------------
548-4th-Cab2 |
548-4th-RR1 |
548-4th-RR2 |
548-4th-Cab1 |
(4 rows)
inventory=> SELECT cabinets_name || ' - ' || cabinets_description AS concat
FROM cabinets WHERE cabinets_datacenters = 2;
concat
-----------------
548-4th-Cab1 -
(4 rows)
Note: The cabinets_description for the "548-4th-Cab1" row is " ",
not NULL, hence it being displayed. Is this standard SQL behavior?
Client is from rpm: postgresql-8.0.7-1.FC4.1
Server is from rpm: postgresql-server-8.0.7-1.FC4.1
-neil
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To: pgsql-sql@postgresql.org
Cc: nharkins@well.com
Subject: Re: concatenation with a null column (using ||) nulls the result?
In-Reply-To: <Pine.SOL.4.10.10604101430250.2779-100000@well.com>
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