Re: [GENERAL] select using date
Tim Williams <williams@ugsolutions.com>
From: Tim Williams <williams@ugsolutions.com>
To: kheflin@shreve.net (Kevin Heflin)
Cc: pgsql-general@postgreSQL.org
Date: 1999-01-05T11:06:18Z
Lists: pgsql-hackers, pgsql-general
> Trying to use select statement using CURRENT_DATE
> Which works fine like so:
>
> select * from headlines where dateof = CURRENT_DATE order by dateof desc
>
> But I'm also wanting to do something similar to:
>
> select * from headlines where dateof = CURRENT_DATE - INTERVAL '1' DAY
> order by dateof desc
>
> Basically just trying to subtract 1 day from the CURRENT_DATE
Kevin,
(1) Handy hint: try '\df' once in the psql utility.
This gives a nice list of functions, their return types, and
brief descriptions of what they accomplish.
(2) The function for which you seek is probably "timemi" which
takes a time as its first argument and a time interval
(like 1 day) as its second argument.
For example, same time yesterday:
select timemi('now'::datetime, '1 day'::timespan);
- Tim