Bryn Llewellyn <bryn@xxxxxxxxxxxx> writes: > I tried this obvious test (using Version 13.4): > with c as ( > select > '2000-01-15'::timestamp as start_1, > '2000-02-15'::timestamp as start_2, > '2000-03-15'::timestamp as common_endpoint) > select ( > (start_1, common_endpoint) overlaps > (start_2, common_endpoint) > )::text > from c; > The result is "true". Seems to me that the doc is therefore wrong Huh? Those intervals have lots of points in common, not only a single point. The documentation is referring to a case like your second example. regards, tom lane