Re: Date Time calculation help

Thanx Josh,

This helped solve my problem.

Unni
----- Original Message -----
From: "Josh Berkus" <josh(at)agliodbs(dot)com>
To: "Unnikrishnan Menon" <unnikrishnan(dot)menon(at)chennai(dot)transys(dot)net>
Sent: Tuesday, January 22, 2002 2:02 AM
Subject: Re: [SQL] Date Time calculation help

> Unni,
>
> > I tried the same query in postgresql but the value returned is 0.
> > The query was:
> > select mod((current_date - '2002-15-01')),1);
>
> The problem above is that you are using the DATE data type, which does
> not admit hours. As a result, mod(1)=0 is quite correct.
>
> You want to use the TIMESTAMP data type, and process your outcome as an
> interval:
> select (current_timestamp - ('2002-15-01'::Timestamp))
> which should give you some days and some hours.
>
> See: http://techdocs.postgresql.org/techdocs/faqdatesintervals.php
> for more info about dates and times.
>
> Of course, I could give you more help if I was clear on what exactly
> you want to achieve. Do you want the date, or just hours? Care to
> elucidate?
>
> -Josh Berkus
>
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