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Re: Can someone tell me why this statement is failing?

From: Edmund Bacon <ebacon(at)onesystem(dot)com>
To: P A <patkins2474(at)yahoo(dot)com>
Cc: pete(at)tkins(dot)com, pgsql-sql(at)postgresql(dot)org
Subject: Re: Can someone tell me why this statement is failing?
Date: 2004-04-20 14:42:21
Message-ID: 408536CD.5020105@onesystem.com (view raw or flat)
Thread:
Lists: pgsql-sql
Your end time minutes is NULL, comparing NULL to anything (even NULL 
itself) yields NULL so you either need to:

SELECT * FROM ... WHERE ... AND (end_time_minutes IS NULL OR 
end_time_minutes <= '1082375100');

or

SELECT * FROM ... WHERE ... AND  coalsece(end_time_minutes, 0) <= 
'1082375100';


P A wrote:

>Can anyone tell me why this SQL statement is not
>matching with the row from the table below? I think
>I'm going mad!
>
>#####################################
>SQL Statement
>#####################################
>
>SELECT * FROM t_bell_schedule WHERE calendar_day =
>'2004-04-12' AND start_time_minutes >= '1082374200'
>AND end_time_minutes <= '1082375100';
>
>#####################################
>Current DB Data to match
>#####################################
>
> calendar_day | period_letter | start_time_minutes |
>end_time_minutes
>--------------+---------------+--------------------+------------------
> 2004-04-12   | B             |         1082374440 |  
>    1082377320
>
>#####################################
>DB Structure 
>#####################################
>
>       Column       |            Type             |   
>                               Modifiers
>--------------------+-----------------------------+--------------------------------------------------------------------------------
> bell_schedule_uid  | integer                     |
>not null default
>nextval('public.t_bell_schedule_bell_schedule_uid_seq'::text)
> calendar_day       | date                        |
> period_letter      | character varying(4)        |
> period             | character varying(4)        |
> start_time         | time without time zone      |
> end_time           | time without time zone      |
> total_minutes      | integer                     |
> activestatus       | integer                     |
> datecreated        | timestamp without time zone |
> datemodified       | timestamp without time zone |
> start_time_minutes | integer                     |
> end_time_minutes   | integer                     |
>
>
>Cheers,
>Pete
>
>
>
>	
>		
>__________________________________
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>  
>

-- 
Edmund Bacon <ebacon(at)onesystem(dot)com>


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pgsql-sql by date

Next:From: Rod TaylorDate: 2004-04-20 15:32:03
Subject: Re: Can someone tell me why this statement is failing?
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