Received: from magus.postgresql.org (magus.postgresql.org [87.238.57.229]) by mail.postgresql.org (Postfix) with ESMTP id AF85F18BA230 for ; Wed, 18 Apr 2012 16:01:26 -0300 (ADT) Received: from smtp1-g21.free.fr ([2a01:e0c:1:1599::10]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1SKa83-0005xY-R5 for pgsql-docs@postgresql.org; Wed, 18 Apr 2012 19:01:25 +0000 Received: from [IPv6:2a01:e34:ee46:c410:226:b6ff:fe37:4f61] (unknown [IPv6:2a01:e34:ee46:c410:226:b6ff:fe37:4f61]) by smtp1-g21.free.fr (Postfix) with ESMTP id B82529401E3 for ; Wed, 18 Apr 2012 21:01:04 +0200 (CEST) Message-ID: <4F8F0F71.20500@free.fr> Date: Wed, 18 Apr 2012 21:01:05 +0200 From: Florence Cousin Reply-To: cousinflo@free.fr User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20111001 Thunderbird/7.0.1 MIME-Version: 1.0 To: pgsql-docs@postgresql.org Subject: Date/Time Types : internals Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201204/34 X-Sequence-Number: 7288 Hi, At the bottom of the page about Date/Time types ( http://www.postgresql.org/docs/9.1/interactive/datatype-datetime.html ) there is this sentence : Date conventions before the 19th century make for interesting reading, but are not consistent enough to warrant coding into a date/time handler. This sentence seemed very strange to me, and I am not sure to really understand what it implies (or not) for the user. Could someone explain that this really means and implies? Thank you, Florence Cousin.