Robert Creager <[EMAIL PROTECTED]> writes:
> Martin Marques <[EMAIL PROTECTED]> confessed:
>> Is there a function that would give me the date for a given day of year?
> Something like:
> select date_trunc( 'year', now() ) + (extract( doy from now() ) - 1) *
> '1day'::interval;
timestamp + interval arithmetic is likely to give you problems at
daylight savings boundaries, since '1day' will be taken as '24hours'.
A more reliable way to get (what I assume is) the desired result is
to use the date + integer operator:
select date_trunc('year', now())::date + (extract(doy from now()) - 1)::integer;
regards, tom lane
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