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-rw-r--r--doc/src/sgml/datetime.sgml18
1 files changed, 14 insertions, 4 deletions
diff --git a/doc/src/sgml/datetime.sgml b/doc/src/sgml/datetime.sgml
index 93315564c8..d1f82c9d6e 100644
--- a/doc/src/sgml/datetime.sgml
+++ b/doc/src/sgml/datetime.sgml
@@ -1,5 +1,5 @@
<!--
-$PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.38 2003/11/29 19:51:36 pgsql Exp $
+$PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.39 2003/12/01 20:34:53 tgl Exp $
-->
<appendix id="datetime-appendix">
@@ -370,9 +370,10 @@ $PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.38 2003/11/29 19:51:36 pgsql E
<para>
<xref linkend="datetime-timezone-table"> shows the time zone
- abbreviations recognized by <productname>PostgreSQL</productname>.
- <productname>PostgreSQL</productname> contains internal tabular
- information for time zone decoding, since there is no standard
+ abbreviations recognized by <productname>PostgreSQL</productname>
+ in date/time input values.
+ <productname>PostgreSQL</productname> uses internal tables
+ for time zone input decoding, since there is no standard
operating system interface to provide access to general,
cross-time zone information. The underlying operating system
<emphasis>is</emphasis> used to provide time zone information for
@@ -380,6 +381,15 @@ $PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.38 2003/11/29 19:51:36 pgsql E
</para>
<para>
+ Keep in mind also that the time zone names
+ recognized by <command>SET TIMEZONE</> are operating-system
+ dependent and may have little to do with <xref
+ linkend="datetime-timezone-table">. For example, some systems
+ recognize values like <literal>'Europe/Rome'</> in <command>SET
+ TIMEZONE</>.
+ </para>
+
+ <para>
The table is organized by time zone offset from <acronym>UTC</>,
rather than alphabetically. This is intended to facilitate
matching local usage with recognized abbreviations for cases where