From: Tom Lane <tgl@sss.pgh.pa.us>
To: mario.splivalo@mobart.hr
Cc: pgsql-sql@postgresql.org
Subject: Re: JOIN query not working as expected
Date: Tue, 06 Dec 2005 09:58:11 -0500
Message-ID: <164.1133881091@sss.pgh.pa.us> (raw)
In-Reply-To: <1133878084.8161.22.camel@ekim>
References: <1133878084.8161.22.camel@ekim>
Mario Splivalo <mario.splivalo@mobart.hr> writes:
> Now I want all services which didn't have any messages within certain
> period:
> pulitzer2=# select * from services where id not in (select distinct
> service_id from messages where receiving_time between '2005-10-01' and
> '2005-10-30');
> (0 rows)
> Why is that?
Probably, you've got some NULLs in the messages.service_id column ...
try excluding those from the sub-select.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, mario.splivalo@mobart.hr
Subject: Re: JOIN query not working as expected
In-Reply-To: <164.1133881091@sss.pgh.pa.us>
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