Re: question using 'between' in a sql query

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От Theodore Petrosky
Тема Re: question using 'between' in a sql query
Дата
Msg-id 20051204162854.79878.qmail@web31701.mail.mud.yahoo.com
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Ответ на Re: question using 'between' in a sql query  (Michael Fuhr <mike@fuhr.org>)
Список pgsql-sql
thanks... as is so often the case I discovered 

date_trunc('day', insertdate) between '11/20/2005' AND
'11/20/2005' also works....

It wasn't until I pressed the send button that I
thought of the solution. I have thought of creating a
faux 'send' button for my email software... yours is a
little easier to read (human)..

Thanks again,

Ted

--- Michael Fuhr <mike@fuhr.org> wrote:

> On Sat, Dec 03, 2005 at 09:54:16AM -0800, Theodore
> Petrosky wrote:
> > if 'between' is inclusive of the start and end
> dates why doesn't
> > this query result in all the rows on '11/20/2005'?
> 
> EXPLAIN shows what happens when you compare a date
> against a timestamp:
> 
> Filter: ((insertdate >= '2005-11-20
> 00:00:00-08'::timestamp with time zone)
>      AND (insertdate <= '2005-11-20
> 00:00:00-08'::timestamp with time zone))
> 
> One way around this is to cast the timestamp column
> to date:
> 
> SELECT employeecode
> FROM mytable
> WHERE insertdate::date BETWEEN '11/20/2005' AND
> '11/20/2005';
> 
> -- 
> Michael Fuhr
> 


    
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