Hello,
In Jim Melton and Alan Simon's "SQL:1999 - Understanding Relational
Language Components" (ISBN 1-55860-456-1), they write that the following
is to be interpreted as a TIMESTAMP WITH TIME ZONE value:
TIMESTAMP '2003-07-29 13:19:30.5+02:00'
PostgreSQL interprets the above as a TIMESTAMP WITHOUT TIME ZONE value of
'2003-07-29 13:19:30.5', i.e. it simply discards the '+02:00' part and
fails to interpret it as being of TIMESTAMP WITH TIME ZONE type.
Unless Melton+Simon are wrong, PostgreSQL is not completely following
SQL:1999 regarding TIMESTAMP-like literal parsing.
Furthermore, as Oracle behaves as Melton+Simon describes, subtle, but
potentially nasty portability problems can be imagined, hurting people
porting to/from Oracle.
--
Greetings from Troels Arvin, Copenhagen, Denmark