Re: selecting all records where a column is null

From: terry(at)greatgulfhomes(dot)com
To: "'Elmshauser, Erik'" <erike(at)pbgnw(dot)com>, <pgsql-general(at)postgresql(dot)org>
Subject: Re: selecting all records where a column is null
Date: 2002-06-20 20:40:38
Message-ID: 003901c2189a$bd5fd640$2766f30a@development.greatgulfhomes.com
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select * from table where field IS NULL;

Terry Fielder
Network Engineer
Great Gulf Homes / Ashton Woods Homes
terry(at)greatgulfhomes(dot)com

> -----Original Message-----
> From: pgsql-general-owner(at)postgresql(dot)org
> [mailto:pgsql-general-owner(at)postgresql(dot)org]On Behalf Of
> Elmshauser, Erik
> Sent: Thursday, June 20, 2002 2:47 PM
> To: pgsql-general(at)postgresql(dot)org
> Subject: [GENERAL] selecting all records where a column is null
>
>
> Hi, I am trying to select every record from a table where a specific
> column does not have a value in it yet. Is there a way to
> express that
> in a SQL statement? Here are the few I tried:
>
> select * from table where field;
> select * from table where field = '';
> select * from table where field = NULL;
>
> and some other stuff the is way more broken. I have flipped
> through the
> docs a bit but I haven't found anything useful yet. If someone could
> point me to the right place in the docs or give me an example of a
> select that will do this I would be very grateful.
> --Erik
>
>
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