Re: Date Time calculation help

Unnikrishanan,

The following query will return the number of whole days between the two dates (a working version of postgres query you posted).

select date_part('day','now'::datetime - '2001-01-15'::datetime);

Other available datetime functions can be found at:
http://www.il.postgresql.org/users-lounge/docs/7.1/postgres/functions-datetime.html

hih

steve boyle
----- Original Message -----
From: Unnikrishnan Menon
To: pgsql-sql(at)postgresql(dot)org
Sent: Monday, January 14, 2002 2:58 PM
Subject: [SQL] Date Time calculation help

Hi,

I have a particular query in Oracle :

select mod((sysdate - to_date('15-JAN-02','dd-mon-yy')),1) from dual;
The above query gives 0.752.. as the difference between the two days which when multiplied by 24 gives around 3.1.. hrs.

I tried the same query in postgresql but the value returned is 0.
The query was:
select mod((current_date - '2002-15-01')),1);

I require the difference in time to the last second to be shown as time left. Could anyone suggest as to how to overcome this particular problem.

Thanx in advance,

Unni