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提交 dd0279b1 编写于 作者: T Thomas G. Lockhart
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Document the precision arguments for date/time types per SQL9x. 

Update the list of recognized time zones.
Document the range of arguments allowed for SET TIME ZONE.
Still need to add info on other date/time symbols (e.g. "AM", "T")
 and to freshen the docs on the date/time parsing rules.
上级 b5e23db4
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内联 并排
Showing with 185 addition and 99 deletion
doc/src/sgml/datatype.sgml
浏览文件 @ dd0279b1
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.80 2001/12/23 20:21:37 tgl Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.81 2001/12/29 18:35:46 thomas Exp $
-->
<chapter id="datatype">
......@@ -135,7 +135,7 @@ $Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.80 2001/12/23 20:21:37 tg
</row>
<row>
<entry><type>interval</type></entry>
<entry><type>interval(<replaceable>p</replaceable>)</type></entry>
<entry></entry>
<entry>general-use time span</entry>
</row>
......@@ -165,8 +165,10 @@ $Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.80 2001/12/23 20:21:37 tg
</row>
<row>
<entry><type>numeric(<replaceable>p</replaceable>, <replaceable>s</replaceable>)</type></entry>
<entry><type>decimal(<replaceable>p</replaceable>, <replaceable>s</replaceable>)</type></entry>
<entry><type>numeric [ (<replaceable>p</replaceable>,
<replaceable>s</replaceable>) ]</type></entry>
<entry><type>decimal [ (<replaceable>p</replaceable>,
<replaceable>s</replaceable>) ]</type></entry>
<entry>exact numeric with selectable precision</entry>
</row>
......@@ -1306,7 +1308,7 @@ SELECT b, char_length(b) FROM test2;
<entry>1 day</entry>
</row>
<row>
<entry><type>time [ without time zone ]</type></entry>
<entry><type>time [ (<replaceable>p</replaceable>) ] [ without time zone ]</type></entry>
<entry>times of day only</entry>
<entry>8 bytes</entry>
<entry>00:00:00.00</entry>
......@@ -1314,7 +1316,7 @@ SELECT b, char_length(b) FROM test2;
<entry>1 microsecond</entry>
</row>
<row>
<entry><type>time with time zone</type></entry>
<entry><type>time [ (<replaceable>p</replaceable>) ] with time zone</type></entry>
<entry>times of day only</entry>
<entry>12 bytes</entry>
<entry>00:00:00.00+12</entry>
......@@ -2164,7 +2166,7 @@ January 8 04:05:06 1999 PST
<productname>PostgreSQL</productname> for legacy applications and
for compatibility with other RDBMS implementations).
<productname>PostgreSQL</productname>
assumes local time for any type containing only
assumes your local time zone for any type containing only
date or time. Further, time zone support is derived from
the underlying operating system
time-zone capabilities, and hence can handle daylight-saving time
......
doc/src/sgml/datetime.sgml
浏览文件 @ dd0279b1
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/datetime.sgml,v 2.23 2001/11/21 05:53:41 thomas Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/datetime.sgml,v 2.24 2001/12/29 18:35:47 thomas Exp $
Date/time details
-->
......@@ -54,17 +54,17 @@ Date/time details
</row>
<row>
<entry>AESST</entry>
<entry>+11:00 </entry>
<entry>+11:00</entry>
<entry>Australia Eastern Summer Standard Time</entry>
</row>
<row>
<entry>ACSST</entry>
<entry>+10:30 </entry>
<entry>+10:30</entry>
<entry>Central Australia Summer Standard Time</entry>
</row>
<row>
<entry>CADT</entry>
<entry>+10:30 </entry>
<entry>+10:30</entry>
<entry>Central Australia Daylight Savings Time</entry>
</row>
<row>
......@@ -74,12 +74,12 @@ Date/time details
</row>
<row>
<entry>AEST</entry>
<entry>+10:00 </entry>
<entry>+10:00</entry>
<entry>Australia Eastern Standard Time</entry>
</row>
<row>
<entry>EAST</entry>
<entry>+10:00 </entry>
<entry>+10:00</entry>
<entry>East Australian Standard Time</entry>
</row>
<row>
......@@ -92,368 +92,423 @@ Date/time details
<entry>+10:00</entry>
<entry>Melbourne, Australia</entry>
</row>
<row>
<entry>ACST</entry>
<entry>+09:30 </entry>
<entry>Central Australia Standard Time</entry>
</row>
<row>
<entry>SAST</entry>
<entry>+09:30 </entry>
<entry>+09:30</entry>
<entry>South Australia Standard Time</entry>
</row>
<row>
<entry>CAST</entry>
<entry>+09:30 </entry>
<entry>+09:30</entry>
<entry>Central Australia Standard Time</entry>
</row>
<row>
<entry>AWSST</entry>
<entry>+9:00 </entry>
<entry>+09:00</entry>
<entry>Australia Western Summer Standard Time</entry>
</row>
<row>
<entry>JST</entry>
<entry>+9:00</entry>
<entry>+09:00</entry>
<entry>Japan Standard Time,USSR Zone 8</entry>
</row>
<row>
<entry>KST</entry>
<entry>+9:00</entry>
<entry>+09:00</entry>
<entry>Korea Standard Time</entry>
</row>
<row>
<entry>MHT</entry>
<entry>+09:00</entry>
<entry>Kwajalein Time</entry>
</row>
<row>
<entry>WDT</entry>
<entry>+9:00</entry>
<entry>+09:00</entry>
<entry>West Australian Daylight Time</entry>
</row>
<row>
<entry>MT</entry>
<entry>+8:30</entry>
<entry>+08:30</entry>
<entry>Moluccas Time</entry>
</row>
<row>
<entry>AWST</entry>
<entry>+8:00 </entry>
<entry>+08:00</entry>
<entry>Australia Western Standard Time</entry>
</row>
<row>
<entry>CCT</entry>
<entry>+8:00 </entry>
<entry>+08:00</entry>
<entry>China Coastal Time</entry>
</row>
<row>
<entry>WADT</entry>
<entry>+8:00</entry>
<entry>+08:00</entry>
<entry>West Australian Daylight Time</entry>
</row>
<row>
<entry>WST</entry>
<entry>+8:00</entry>
<entry>+08:00</entry>
<entry>West Australian Standard Time</entry>
</row>
<row>
<entry>JT</entry>
<entry>+7:30</entry>
<entry>+07:30</entry>
<entry>Java Time</entry>
</row>
<row>
<entry>ALMST</entry>
<entry>+07:00</entry>
<entry>Almaty Summer Time</entry>
</row>
<row>
<entry>WAST</entry>
<entry>+7:00</entry>
<entry>+07:00</entry>
<entry>West Australian Standard Time</entry>
</row>
<row>
<entry>CXT</entry>
<entry>+7:00</entry>
<entry>+07:00</entry>
<entry>Christmas (Island) Time</entry>
</row>
<row>
<entry>ALMT</entry>
<entry>+06:00</entry>
<entry>Almaty Time</entry>
</row>
<!--
Conflicts with China Coastal Time
<row>
<entry>CCT</entry>
<entry>+6:30 </entry>
<entry>+06:30</entry>
<entry>Cocos Island Time</entry>
</row>
-->
<row>
<entry>MAWT</entry>
<entry>+06:00</entry>
<entry>Mawson (Antarctica) Time</entry>
</row>
<row>
<entry>IOT</entry>
<entry>+5:00</entry>
<entry>+05:00</entry>
<entry>Indian Chagos Time</entry>
</row>
<row>
<entry>MVT</entry>
<entry>+5:00</entry>
<entry>+05:00</entry>
<entry>Maldives Island Time</entry>
</row>
<row>
<entry>TFT</entry>
<entry>+5:00</entry>
<entry>+05:00</entry>
<entry>Kerguelen Time</entry>
</row>
<row>
<entry>AFT</entry>
<entry>+04:30</entry>
<entry>Afganistan Time</entry>
</row>
<row>
<entry>EAST</entry>
<entry>+4:00</entry>
<entry>+04:00</entry>
<entry>Antananarivo Savings Time</entry>
</row>
<row>
<entry>MUT</entry>
<entry>+4:00</entry>
<entry>+04:00</entry>
<entry>Mauritius Island Time</entry>
</row>
<row>
<entry>RET</entry>
<entry>+4:00</entry>
<entry>+04:00</entry>
<entry>Reunion Island Time</entry>
</row>
<row>
<entry>SCT</entry>
<entry>+4:00</entry>
<entry>+04:00</entry>
<entry>Mahe Island Time</entry>
</row>
<row>
<entry>IT</entry>
<entry>+3:30</entry>
<entry>+03:30</entry>
<entry>Iran Time</entry>
</row>
<row>
<entry>EAT</entry>
<entry>+3:00</entry>
<entry>+03:00</entry>
<entry>Antananarivo, Comoro Time</entry>
</row>
<row>
<entry>BT</entry>
<entry>+3:00 </entry>
<entry>+03:00</entry>
<entry>Baghdad Time</entry>
</row>
<row>
<entry>EETDST</entry>
<entry>+3:00 </entry>
<entry>+03:00</entry>
<entry>Eastern Europe Daylight Savings Time</entry>
</row>
<row>
<entry>HMT</entry>
<entry>+03:00</entry>
<entry>Hellas Mediterranean Time (?)</entry>
</row>
<row>
<entry>BDST</entry>
<entry>+2:00 </entry>
<entry>+02:00</entry>
<entry>British Double Standard Time</entry>
</row>
<row>
<entry>CEST</entry>
<entry>+2:00 </entry>
<entry>+02:00</entry>
<entry>Central European Savings Time</entry>
</row>
<row>
<entry>CETDST</entry>
<entry>+2:00 </entry>
<entry>+02:00</entry>
<entry>Central European Daylight Savings Time</entry>
</row>
<row>
<entry>EET</entry>
<entry>+2:00 </entry>
<entry>+02:00</entry>
<entry>Eastern Europe, USSR Zone 1</entry>
</row>
<row>
<entry>FWT</entry>
<entry>+2:00</entry>
<entry>+02:00</entry>
<entry>French Winter Time</entry>
</row>
<row>
<entry>IST</entry>
<entry>+2:00</entry>
<entry>+02:00</entry>
<entry>Israel Standard Time</entry>
</row>
<row>
<entry>MEST</entry>
<entry>+2:00</entry>
<entry>+02:00</entry>
<entry>Middle Europe Summer Time</entry>
</row>
<row>
<entry>METDST</entry>
<entry>+2:00</entry>
<entry>+02:00</entry>
<entry>Middle Europe Daylight Time</entry>
</row>
<row>
<entry>SST</entry>
<entry>+2:00</entry>
<entry>+02:00</entry>
<entry>Swedish Summer Time</entry>
</row>
<row>
<entry>BST</entry>
<entry>+1:00 </entry>
<entry>+01:00</entry>
<entry>British Summer Time</entry>
</row>
<row>
<entry>CET</entry>
<entry>+1:00 </entry>
<entry>+01:00</entry>
<entry>Central European Time</entry>
</row>
<row>
<entry>DNT</entry>
<entry>+1:00 </entry>
<entry>+01:00</entry>
<entry><foreignphrase>Dansk Normal Tid</foreignphrase></entry>
</row>
<row>
<entry>FST</entry>
<entry>+1:00 </entry>
<entry>+01:00</entry>
<entry>French Summer Time</entry>
</row>
<row>
<entry>MET</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Middle Europe Time</entry>
</row>
<row>
<entry>MEWT</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Middle Europe Winter Time</entry>
</row>
<row>
<entry>MEZ</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Middle Europe Zone</entry>
</row>
<row>
<entry>NOR</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Norway Standard Time</entry>
</row>
<row>
<entry>SET</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Seychelles Time</entry>
</row>
<row>
<entry>SWT</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Swedish Winter Time</entry>
</row>
<row>
<entry>WETDST</entry>
<entry>+1:00</entry>
<entry>+01:00</entry>
<entry>Western Europe Daylight Savings Time</entry>
</row>
<row>
<entry>GMT</entry>
<entry>0:00</entry>
<entry>+00:00</entry>
<entry>Greenwich Mean Time</entry>
</row>
<row>
<entry>WET</entry>
<entry>0:00</entry>
<entry>+00:00</entry>
<entry>Western Europe</entry>
</row>
<row>
<entry>WAT</entry>
<entry>-1:00</entry>
<entry>-01:00</entry>
<entry>West Africa Time</entry>
</row>
<row>
<entry>NDT</entry>
<entry>-2:30</entry>
<entry>-02:30</entry>
<entry>Newfoundland Daylight Time</entry>
</row>
<row>
<entry>ADT</entry>
<entry>-03:00 </entry>
<entry>-03:00</entry>
<entry>Atlantic Daylight Time</entry>
</row>
<row>
<entry>AWT</entry>
<entry>-03:00</entry>
<entry>(unknown)</entry>
</row>
<row>
<entry>NFT</entry>
<entry>-3:30</entry>
<entry>-03:30</entry>
<entry>Newfoundland Standard Time</entry>
</row>
<row>
<entry>NST</entry>
<entry>-3:30</entry>
<entry>-03:30</entry>
<entry>Newfoundland Standard Time</entry>
</row>
<row>
<entry>AST</entry>
<entry>-4:00 </entry>
<entry>-04:00</entry>
<entry>Atlantic Standard Time (Canada)</entry>
</row>
<row>
<entry>ACST</entry>
<entry>-04:00</entry>
<entry>Atlantic/Porto Acre Summer Time</entry>
</row>
<row>
<entry>ACT</entry>
<entry>-05:00</entry>
<entry>Atlantic/Porto Acre Standard Time</entry>
</row>
<row>
<entry>EDT</entry>
<entry>-4:00 </entry>
<entry>-04:00</entry>
<entry>Eastern Daylight Time</entry>
</row>
<!--
<row>
<entry>ZP4</entry>
<entry>-4:00</entry>
<entry>-04:00</entry>
<entry>GMT +4 hours</entry>
</row>
-->
<row>
<entry>CDT</entry>
<entry>-5:00 </entry>
<entry>-05:00</entry>
<entry>Central Daylight Time</entry>
</row>
<row>
<entry>EST</entry>
<entry>-5:00 </entry>
<entry>-05:00</entry>
<entry>Eastern Standard Time</entry>
</row>
<!--
<row>
<entry>ZP5</entry>
<entry>-5:00</entry>
<entry>-05:00</entry>
<entry>GMT +5 hours</entry>
</row>
-->
<row>
<entry>CST</entry>
<entry>-6:00 </entry>
<entry>-06:00</entry>
<entry>Central Standard Time</entry>
</row>
<row>
<entry>MDT</entry>
<entry>-6:00</entry>
<entry>-06:00</entry>
<entry>Mountain Daylight Time</entry>
</row>
<!--
<row>
<entry>ZP6</entry>
<entry>-6:00</entry>
<entry>-06:00</entry>
<entry>GMT +6 hours</entry>
</row>
-->
<row>
<entry>MST</entry>
<entry>-7:00</entry>
<entry>-07:00</entry>
<entry>Mountain Standard Time</entry>
</row>
<row>
<entry>PDT</entry>
<entry>-7:00</entry>
<entry>-07:00</entry>
<entry>Pacific Daylight Time</entry>
</row>
<row>
<entry>AKDT</entry>
<entry>-08:00</entry>
<entry>Alaska Daylight Time</entry>
</row>
<row>
<entry>PST</entry>
<entry>-8:00</entry>
<entry>-08:00</entry>
<entry>Pacific Standard Time</entry>
</row>
<row>
<entry>YDT</entry>
<entry>-8:00</entry>
<entry>-08:00</entry>
<entry>Yukon Daylight Time</entry>
</row>
<row>
<entry>AKST</entry>
<entry>-09:00</entry>
<entry>Alaska Standard Time</entry>
</row>
<row>
<entry>HDT</entry>
<entry>-9:00</entry>
<entry>-09:00</entry>
<entry>Hawaii/Alaska Daylight Time</entry>
</row>
<row>
<entry>YST</entry>
<entry>-9:00</entry>
<entry>-09:00</entry>
<entry>Yukon Standard Time</entry>
</row>
<row>
<entry>AHST</entry>
<entry>-10:00 </entry>
<entry>-10:00</entry>
<entry>Alaska-Hawaii Standard Time</entry>
</row>
<row>
<entry>HST</entry>
<entry>-10:00</entry>
<entry>Hawaii Standard Time</entry>
</row>
<row>
<entry>CAT</entry>
<entry>-10:00 </entry>
<entry>-10:00</entry>
<entry>Central Alaska Time</entry>
</row>
<row>
......@@ -503,6 +558,11 @@ Date/time details
</row>
</thead>
<tbody>
<row>
<entry>ACST</entry>
<entry>+09:30</entry>
<entry>Central Australia Standard Time</entry>
</row>
<row>
<entry>CST</entry>
<entry>+10:30</entry>
......@@ -515,7 +575,7 @@ Date/time details
</row>
<row>
<entry>SAT</entry>
<entry>+9:30</entry>
<entry>+09:30</entry>
<entry>South Australian Standard Time</entry>
</row>
</tbody>
......@@ -582,7 +642,7 @@ Date/time details
as either a special string (e.g. <literal>today</literal>),
day (e.g. <literal>Thursday</literal>),
month (e.g. <literal>January</literal>),
or noise word (e.g. <literal>on</literal>).
or noise word (e.g. <literal>at</literal>, <literal>on</literal>).
</para>
<para>
Set field values and bit mask for fields.
......
doc/src/sgml/ref/set.sgml
浏览文件 @ dd0279b1
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.54 2001/12/08 03:24:39 thomas Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.55 2001/12/29 18:35:54 thomas Exp $
PostgreSQL documentation
-->
......@@ -235,6 +235,13 @@ SELECT setseed(<replaceable>value</replaceable>);
<term>TIME ZONE</term>
<term>TIMEZONE</term>
<listitem>
<para>
Sets the default time zone for your session. Arguments can be
an SQL time interval constant, an integer or double precision
constant, or a string representing a time zone supported by
the host operating system.
</para>
<para>
The possible values for time zone depends on your operating
system. For example, on Linux
......@@ -243,10 +250,10 @@ SELECT setseed(<replaceable>value</replaceable>);
</para>
<para>
Here are some valid values for time zone:
<variablelist>
<variablelist>
<varlistentry>
<term>PST8PDT</term>
<term>'PST8PDT'</term>
<listitem>
<para>
Set the time zone for California.
......@@ -254,10 +261,10 @@ SELECT setseed(<replaceable>value</replaceable>);
</listitem>
</varlistentry>
<varlistentry>
<term>Portugal</term>
<term>'Portugal'</term>
<listitem>
<para>
Set time zone for Portugal.
Set the time zone for Portugal.
</para>
</listitem>
</varlistentry>
......@@ -265,7 +272,24 @@ SELECT setseed(<replaceable>value</replaceable>);
<term>'Europe/Rome'</term>
<listitem>
<para>
Set time zone for Italy.
Set the time zone for Italy.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>7</term>
<listitem>
<para>
Set the time zone to 7 hours offset west from GMT (equivalent
to PDT).
</para>
</listitem>
</varlistentry>
<term>INTERVAL '08:00' HOUR TO MINUTE</term>
<listitem>
<para>
Set the time zone to 8 hours offset west from GMT (equivalent
to PST).
</para>
</listitem>
</varlistentry>
......@@ -286,9 +310,9 @@ SELECT setseed(<replaceable>value</replaceable>);
becomes GMT (on most systems anyway).
</para>
<para>
If the PGTZ environment variable is set in the frontend
If the <envar>PGTZ</envar> environment variable is set in the frontend
environment of a client based on libpq, libpq will automatically
set TIMEZONE to the value of PGTZ during connection start-up.
set TIMEZONE to the value of <envar>PGTZ</envar> during connection start-up.
</para>
</listitem>
</varlistentry>
......
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