create or replace function test1() returns text as $$
DECLARE
mm varchar;
ma bool;
BEGIN
SELECT into ma (DATE '2001-02-16', DATE '2001-12-21') OVERLAPS (DATE '2001-10-30', DATE '2002-10-30');
if (ma) then
select into mm (age(DATE '2001-02-16', DATE '2001-12-21')-age(DATE '2001-10-30', DATE '2002-10-30'));
end if;
return mm;
END;
$$ language plpgsql strict;
select * from test1();
vish
On 9/22/05, Tony Wasson <ajwasson@gmail.com> wrote: Given 2 date ranges, the overlaps functions returns TRUE or FALSE. I
want to find the # of days that are overlapping. Is there a "built in"
way to do this? Should I just write a function to do it?
For instance, this example overlaps, but I want to know how much does
it overlap?
SELECT (DATE '2001-02-16', DATE '2001-12-21') OVERLAPS
(DATE '2001-10-30', DATE '2002-10-30');
Thanks in advance!
Tony Wasson
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