From: D'Arcy J.M. Cain <darcy@druid.net>
To: Kenneth Gonsalves <lawgon@thenilgiris.com>
To: pgsql-sql@postgresql.org
Subject: Re: comparing nulls
Date: Tue, 20 Jan 2004 09:06:19 -0500
Message-ID: <200401200906.19322.darcy@druid.net> (raw)
In-Reply-To: <04012019131206.01434@thenilgiris.com>
References: <04012019131206.01434@thenilgiris.com>
On January 20, 2004 08:43 am, Kenneth Gonsalves wrote:
> in postgres7.1 i had a table where an integer field could be null. There
> was no default value. a select statement like so:
> 'select * from table where field = null'
> would give all the rows where that field had no value.
> on porting to 7.3.2, this doesnt work. How to do this?
As per the SQL standard:
SELECT * FROM table WHERE field IS NOT NULL;
--
D'Arcy J.M. Cain <darcy@{druid|vex}.net> | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.
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To: pgsql-sql@postgresql.org
Cc: darcy@druid.net, lawgon@thenilgiris.com
Subject: Re: comparing nulls
In-Reply-To: <200401200906.19322.darcy@druid.net>
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