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From: Vik Fearing <vik.fearing@dalibo.com>
To: AlexK <alkuzo@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: Can I use a constraint to make sure all array elements are positive?
Date: Wed, 19 Mar 2014 23:08:19 +0100
Message-ID: <532A1553.1050008@dalibo.com> (raw)
In-Reply-To: <1395266376754-5796846.post@n5.nabble.com>
References: <1395266376754-5796846.post@n5.nabble.com>
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On 03/19/2014 10:59 PM, AlexK wrote:
> One of the columns in my table is FLOAT[] NOT NULL. Can I use a constraint to
> make sure all array elements are positive?

You can make a function that checks an array, and then use that in a
CHECK constraint.

Also, note that  select array[null]::float[] is null;  returns false. 
That may not be what you want.

-- 
Vik



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