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From: Josh Berkus <josh@agliodbs.com>
Organization: Aglio Database Solutions
To: tomg@sqlclinic.net, Postgres SQL List <pgsql-sql@postgreSQL.org>
Subject: Re: What day is it - when it isn't NOW()?
Date: Fri, 1 Aug 2003 11:28:25 -0700
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Thomas,

> SELECT to_char(now(), 'Day');  returns Friday as I'd hoped.
> But how do I return the day of the week for a specific date other
> than now()?  I'm looking for something along the lines of:
> SELECT to_char('2003-08-04', 'Day') without much success.
>
> Can anyone point me to the right function/combination of functions
> to achieve this?

Well, you could try the online docs under "Functions and operators" <grin>.

Two possibilities:

SELECT to_char('2003-08-04'::TIMESTAMP, 'Day') should make the to_char version 
work for you.

Alternately, SELECT EXTRACT(dow FROM '2003-08-04') will give you a numerical 
(0-6) day of the week.

-- 
Josh Berkus
Aglio Database Solutions
San Francisco