Как найти пересечение двух диапазонов дат?

select max(t1.c1), min(t2.c1)
from (select regexp_split_to_table(concat('01.01.2019'::date, ';','31.05.2019'::date), ';') as c1) t1,
(select regexp_split_to_table(concat('01.03.2019'::date, ';', '31.12.2019'::date), ';') as c1) t2

set datestyle to DMY;
select lower(range), upper(range) from 
(select daterange('01-01-2019'::date,'31-05-2019'::date) * daterange('01-03-2019'::date,'31-12-2019'::date) as range) t