Re: Birthday search.

Here's an example of something that works with some of
the data that I have lying around. Replace exit_dt
with "birthday" (or whatever you have named the field
that holds the birthday information) and replace
ticket_no with name (or whatever) and you should be on
the right track.

SELECT exit_dt, ticket_no FROM tscales
WHERE (
date_part('month', exit_dt) > 4 AND
date_part('month', exit_dt) < 12)
OR (
date_part('month', exit_dt) = 4 AND
date_part('day', exit_dt) >= 15
)
OR (
date_part('month', exit_dt) = 12 AND
date_part('day', exit_dt) <= 20)
ORDER BY exit_dt;

I don't consider myself enough of a SQL guru to know
if this is the "correct" way to do this, but this
query selects some 21000 records out of a 120000
record table on my desktop test machine (PII 400 96M
Ram standard IDE hard drive running Linux) without any
indexes on exit_dt in a couple of seconds.

For more information check out the user guide section
on date/time functions. It is quite interesting. The
extract function would have served as well, but it
requires more typing.

Jason

--- Antti Linno <alligator(at)all(dot)ee> wrote:
> I have a table with personal data, including date of
> birth in date format.
> What i need is a select that searches birthdays in
> certain range.
> E.g. I need to find all birthdays starting from
> 15.april until 20th
> december. As you all understand, year doesn't matter
> :P
> Any simple and elegant solutions to it?
>
> Greetings,
> Antti
>
>
>
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