From: Joe Conway <mail@joeconway.com>
To: Markus Bertheau <twanger@bluetwanger.de>
Cc: pgsql-sql@postgresql.org
Subject: Re: ARRAY() returning NULL instead of ARRAY[] resp. {}
Date: Mon, 23 May 2005 13:04:50 -0700
Message-ID: <42923762.7010708@joeconway.com> (raw)
In-Reply-To: <1116873219.7306.0.camel@localhost.localdomain>
References: <1116873219.7306.0.camel@localhost.localdomain>
Markus Bertheau wrote:
> why does SELECT ARRAY(SELECT 1 WHERE FALSE) return NULL instead of
> ARRAY[] resp. '{}'?
>
Why would you expect an empty array instead of a NULL? NULL is what
you'd get for other data types -- for example:
regression=# SELECT (SELECT 1 WHERE FALSE) IS NULL;
?column?
----------
t
(1 row)
Joe
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To: pgsql-sql@postgresql.org
Cc: mail@joeconway.com, twanger@bluetwanger.de
Subject: Re: ARRAY() returning NULL instead of ARRAY[] resp. {}
In-Reply-To: <42923762.7010708@joeconway.com>
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