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Fix the various forms of AT TIME ZONE to accept either timezones found

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in the zic database or zone names found in the date token table.  This
preserves the old ability to do AT TIME ZONE 'PST' along with the new
ability to do AT TIME ZONE 'PST8PDT'.  Per gripe from Bricklen Anderson.
Also, fix some inconsistencies in usage of TZ_STRLEN_MAX --- the old
code had the potential for one-byte buffer overruns, though given
alignment considerations it's unlikely there was any real risk.
This commit is contained in:
Tom Lane
2005-09-09 02:31:50 +00:00
parent 48123de717
commit a239af02c3
6 changed files with 142 additions and 90 deletions
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8
doc/src/sgml/datetime.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.46 2005/06/15 00:34:08 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.47 2005/09/09 02:31:48 tgl Exp $
-->
<appendix id="datetime-appendix">
@ -990,9 +990,7 @@ $PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.46 2005/06/15 00:34:08 momjian
<para>
<xref linkend="datetime-timezone-set-table"> shows the time zone
names recognized by <productname>PostgreSQL</productname> as valid
settings for the <xref linkend="guc-timezone"> parameter, and as
parameters to the <literal>AT TIME ZONE function</> (see
<xref linkend="functions-datetime-zoneconvert">). Note that
settings for the <xref linkend="guc-timezone"> parameter. Note that
these names are conceptually as well as practically different from
the names shown in <xref linkend="datetime-timezone-input-table">:
most of these names imply a local daylight-savings time rule, whereas
@ -1006,7 +1004,7 @@ $PostgreSQL: pgsql/doc/src/sgml/datetime.sgml,v 2.46 2005/06/15 00:34:08 momjian
</para>
<table id="datetime-timezone-set-table">
<title>Time Zone Names for Setting <varname>timezone</> and <literal>AT TIME ZONE</></title>
<title>Time Zone Names for Setting <varname>timezone</></title>
<tgroup cols="1">
<thead>
<row>

8
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.283 2005/08/25 01:29:55 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.284 2005/09/09 02:31:48 tgl Exp $
PostgreSQL documentation
-->
@ -5730,9 +5730,9 @@ SELECT date_trunc('year', TIMESTAMP '2001-02-16 20:38:40');
In these expressions, the desired time zone <replaceable>zone</> can be
specified either as a text string (e.g., <literal>'PST'</literal>)
or as an interval (e.g., <literal>INTERVAL '-08:00'</literal>).
In the text case, the available zone names are those shown in
<xref linkend="datetime-timezone-set-table">. The time zone can
also be implied using the default time zone for that session.
In the text case, the available zone names are those shown in either
<xref linkend="datetime-timezone-set-table"> or
<xref linkend="datetime-timezone-input-table">.
</para>
<para>