Re: Checking = with timestamp field is slow

Michael Glaesemann <grzm@myrealbox.com>

From: Michael Glaesemann <grzm@myrealbox.com>
To: Antony Paul <antonypaul24@gmail.com>
Cc: pgsql-performance@postgresql.org
Date: 2004-11-05T08:14:01Z
Lists: pgsql-performance
On Nov 5, 2004, at 4:16 PM, Antony Paul wrote:
> where today::date = '2004-11-05';
>
> This is the only condition in the query. There is a btree index on the
> column today.
> Is there any way to optimise it.

I'm sure others out there have better ideas, but you might want to try

where current_date = date '2004-11-05'

Might not make a difference at all, but perhaps PostgreSQL is coercing 
both values to timestamp or some other type as you're only providing a 
string to compare to a date. Then again, it might make no difference at 
all.

My 1 cent.

Michael Glaesemann
grzm myrealbox com