Re: Index on timestamp to date field

On Mon, Oct 13, 2003 at 13:49:07 -0700,
  Patrick Hatcher <PHatcher@macys.com> wrote:
> I have a timestamp field where I find I'm doing a lot of searching by date
> (YYYY-MM-DD) or using this field as a match to another table that has a
> date format.  I wanted to create an index on the  timestamp field using a
> date format.  Is this possible?  I tried:
>  CREATE INDEX test_2 ON table1 USING btree to_char(field2, 'MM-DD-YYYY');
> but I get an error message error at or new to_char

You can't create general functional indexes until 7.4.
However you might be able to use an index on the timestamp if you cast
the character strings to a timestamp value.