Hi,

This doesn't seem to make sense to me, can someone explain the rationale 
behind it?


postgres=# select version();
                                        version
---------------------------------------------------------------------------------------
 PostgreSQL 8.4.4 on x86_64-unknown-linux-gnu, compiled by GCC gcc (GCC) 
4.3.3, 64-bit
(1 row)



Range 1 ending on date A does not overlap with range 2 starting on date A:

postgres=# select ('2010-01-01'::date, '2010-01-05'::date) overlaps 
('2010-01-05'::date, '2010-01-10'::date);
 overlaps
----------
 f
(1 row)



But it does when range 1 is only a single day:

postgres=# select ('2010-01-05'::date, '2010-01-05'::date) overlaps 
('2010-01-05'::date, '2010-01-10'::date);
 overlaps
----------
 t
(1 row)


BTW, it doesn't matter whether one casts to date or timestamp




-- 
Best,




Frank.

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