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Re: Getting the week of a date

From: "Kumar" <sgnerd(at)yahoo(dot)com(dot)sg>
To: "sad" <sad(at)bankir(dot)ru>, <pgsql-sql(at)postgresql(dot)org>
Subject: Re: Getting the week of a date
Date: 2004-02-17 05:10:19
Message-ID: 00a401c3f514$58244970$7502a8c0@hdsc.com (view raw or flat)
Thread:
Lists: pgsql-sql
Seems a part  of your function always returns '0'
select 1 - (to_char(date_trunc('month',now()),'D'))::INT2

because while we use date_trunc it will always return the first day of the
month and when it get subtracted by '1' it be always zero. Is there any
reason why you have included that?

Thanks
Kumar

----- Original Message ----- 
From: "sad" <sad(at)bankir(dot)ru>
To: <pgsql-sql(at)postgresql(dot)org>
Sent: Monday, February 16, 2004 6:53 PM
Subject: Re: [SQL] Getting the week of a date


EXCUSE ME, GUYS !

i forgot to add one monome:
7*(((to_char(date_trunc('month',now()),'D'))::INT2-1)/4)
which is stands for skip a first week of month in case it is not consist Wed

finally the select will be similar the following

SELECT 7*(((to_char(date_trunc('month',now()),'D'))::INT2-1)/4) + 1 -
(to_char(date_trunc('month',now()),'D'))::INT2  +  7*3-3 ;

4 - is a number of Wed in a week (in postgresql numeration)



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Subject: Re: Getting the week of a date
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Subject: Re: nextval problem

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