PostgreSQL时间时区类型 postgresql 时区设置-爱华网

PostgreSQL 时间时区类型有 "timestamp with time zone" 和"timestamp without time zone" ,
"time zone"即为时区，这节简单描述下时区的概念，最后将给出一个全世界时区参照图，供参考。

一了解时区
--1.1创建一张测试表
skytf=>create table test_42(idinteger,
time_withtimestamp with timezone,--带时区
time_without timestamp withouttimezone--不带时区
);
CREATE TABLE

skytf=> insert into test_42 values (1,now(),now());
INSERT 0 1

--1.2 查询表数据
skytf=> select * fromtest_42;
id|time_with|time_without
----+-------------------------------+----------------------------
1 | 2011-06-30 13:28:12.340764+08 | 2011-06-3013:28:12.340764
(1 row)

备注：可以看出，带时区的字段"time_with"的内容显示了时区信息"+08"。

二查询其它时区时间举例
--2.1查询当前时间
skytf=>select now();
now
-------------------------------
2011-06-30 13:17:01.867474+08
PostgreSQL时间时区类型 postgresql 时区设置
(1 row)

--2.2 查询china 时间
skytf=> select now() attime zone 'CCT';
timezone
----------------------------
2011-06-30 13:17:03.493546
(1 row)

--2.3 查询香港时间
skytf=> select now() attime zone 'HKT';
timezone
----------------------------
2011-06-30 13:17:11.174238
(1 row)

--2.4 查询法国时间
skytf=> select now() attime zone 'GFT';
timezone
----------------------------
2011-06-30 02:36:19.137075

备注：这里用到了函数“ at time zone ”, 可以将时间转换成其它时区的时间。

三附： PostgreSQL Time ZoneNames

Names	Offset	Description
`FJST`	-13:00	Fiji Summer Time
`FJT`	-12:00	Fiji Time
`IDLW`	-12:00	International Date Line, West
`BST`	-11:00	Bering Summer Time
`NT`	-11:00	Nome Time
`NUT`	-11:00	Niue Time
`AHST`	-10:00	Alaska-Hawaii Std Time
`CAT`	-10:00	Central Alaska Time
`HST`	-10:00	Hawaii Std Time
`THAT`	-10:00	Tahiti Time
`TKT`	-10:00	Tokelau Time
`MART`	-09:30	Marquesas Time
`AKST`	-09:00	Alaska Standard Time
`GAMT`	-09:00	Gambier Time
`HDT`	-09:00	Hawaii/Alaska Daylight Time
`YST`	-09:00	Yukon Standard Time
`AKDT`	-08:00	Alaska Daylight Time
`PST`	-08:00	Pacific Standard Time
`YDT`	-08:00	Yukon Daylight Time
`MST`	-07:00	Mountain Standard Time
`PDT`	-07:00	Pacific Daylight Time
`CST`	-06:00	Central Standard Time
`EAST`	-06:00	Easter Island Time
`GALT`	-06:00	Galapagos Time
`MDT`	-06:00	Mountain Daylight Time
`ZP6`	-06:00	UTC +6 hours
`ACT`	-05:00	Atlantic/Porto Acre Time
`CDT`	-05:00	Central Daylight Time
`COT`	-05:00	Columbia Time
`EASST`	-05:00	Easter Island Summer Time
`ECT`	-05:00	Ecuador Time
`EST`	-05:00	Eastern Standard Time
`PET`	-05:00	Peru Time
`ZP5`	-05:00	UTC +5 hours
`ACST`	-04:00	Atlantic/Porto Acre Summer Time
`AMT`	-04:00	Amazon Time (Porto Velho)
`AST`	-04:00	Atlantic Std Time (Canada)
`BOT`	-04:00	Bolivia Time
`CLT`	-04:00	Chile Time
`ECT`	-04:00	Eastern Caribbean Time
`EDT`	-04:00	Eastern Daylight Time
`GYT`	-04:00	Guyana Time
`PYT`	-04:00	Paraguay Time
`VET`	-04:00	Venezuela Time
`ZP4`	-04:00	UTC +4 hours
`NFT`	-03:30	Newfoundland Standard Time
`NST`	-03:30	Newfoundland Standard Time
`ADT`	-03:00	Atlantic Daylight Time
`AMST`	-03:00	Amazon Summer Time (Porto Velho)
`ART`	-03:00	Argentina Time
`AWT`	-03:00	Brazil Time
`BRT`	-03:00	Brasilia Time
`BST`	-03:00	Brazil Standard Time
`CLST`	-03:00	Chile Summer Time
`FKST`	-03:00	Falkland Islands Summer Time
`GFT`	-03:00	French Guiana Time
`PYST`	-03:00	Paraguay Summer Time
`UYT`	-03:00	Uruguay Time
`WGT`	-03:00	West Greenland Time
`NDT`	-02:30	Newfoundland Daylight Time
`BRST`	-02:00	Brasilia Summer Time
`FKT`	-02:00	Falkland Islands Time
`FNT`	-02:00	Fernando de Noronha Time
`PMDT`	-02:00	Pierre & Miquelon Daylight Time
`UYST`	-02:00	Uruguay Summer Time
`WGST`	-02:00	West Greenland Summer Time
`AZOT`	-01:00	Azores Time
`EGT`	-01:00	East Greenland Time
`FNST`	-01:00	Fernando de Noronha Summer Time
`SET`	-01:00	Seychelles Time
`WAT`	-01:00	West Africa Time
`AZOST`	+00:00	Azores Summer Time
`EGST`	+00:00	East Greenland Summer Time
`GMT`	+00:00	Greenwich Mean Time
`UTC`	+00:00	Universal Coordinated Time
`UT`	+00:00	Universal Time
`WET`	+00:00	Western Europe
`ZULU`	+00:00	Universal Time
`Z`	+00:00	ISO-8601 Universal Time
`BST`	+01:00	British Summer Time
`CET`	+01:00	Central European Time
`DNT`	+01:00	Dansk Normal Time
`FST`	+01:00	French Summer Time
`MET`	+01:00	Middle Europe Time
`MEWT`	+01:00	Middle Europe Winter Time
`MEZ`	+01:00	Middle Europe Zone
`NOR`	+01:00	Norway Standard Time
`SWT`	+01:00	Swedish Winter Time
`WEST`	+01:00	Western Europe Summer Time
`WEtdST`	+01:00	Western Europe Daylight Savings Time
`BDST`	+02:00	British Double Summer Time
`CEST`	+02:00	Central European Dayl.Time
`CETDST`	+02:00	Central European Dayl.Time
`EET`	+02:00	Eastern Europe, USSR Zone 1
`FWT`	+02:00	French Winter Time
`IST`	+02:00	Israel Time
`MEST`	+02:00	Middle Europe Summer Time
`MEtdST`	+02:00	Middle Europe Daylight Time
`SST`	+02:00	Swedish Summer Time
`BT`	+03:00	Baghdad Time
`EAT`	+03:00	East Africa Time
`EAT`	+03:00	Indian Antananarivo Time
`EEST`	+03:00	Eastern Europe Summer Time
`EEtdST`	+03:00	Eastern Europe Daylight Time
`HMT`	+03:00	Hellas Mediterranean Time
`MSK`	+03:00	Moscow Time
`IRT`	+03:30	Iran Time
`IT`	+03:30	Iran Time
`AMT`	+04:00	Armenia Time (Yerevan)
`AZT`	+04:00	Azerbaijan Time
`EAST`	+04:00	Indian Antananarivo Savings Time
`GET`	+04:00	Georgia Time
`MSD`	+04:00	Moscow Summer Time
`MUT`	+04:00	Mauritius Island Time
`RET`	+04:00	Reunion Island Time
`SCT`	+04:00	Mahe Island Time
`AFT`	+04:30	Kabul Time
`AMST`	+05:00	Armenia Summer Time (Yerevan)
`AZST`	+05:00	Azerbaijan Summer Time
`GEST`	+05:00	Georgia Summer Time
`IOT`	+05:00	Indian Chagos Time
`KGT`	+05:00	Kyrgyzstan Time
`MVT`	+05:00	Maldives Island Time
`PKT`	+05:00	Pakistan Time
`TFT`	+05:00	Kerguelen Time
`TJT`	+05:00	Tajikistan Time
`TMT`	+05:00	Turkmenistan Time
`UZT`	+05:00	Uzbekistan Time
`YEKT`	+05:00	Yekaterinburg Time
`NPT`	+05:45	Nepal Standard Time
`ALMT`	+06:00	Almaty Time
`BDT`	+06:00	Dacca Time
`BTT`	+06:00	Bhutan Time
`DUSST`	+06:00	Dushanbe Summer Time
`KGST`	+06:00	Kyrgyzstan Summer Time
`LKT`	+06:00	Lanka Time
`MAWT`	+06:00	Mawson, Antarctica
`NOVT`	+06:00	Novosibirsk Standard Time
`OMST`	+06:00	Omsk Time
`UZST`	+06:00	Uzbekistan Summer Time
`YEKST`	+06:00	Yekaterinburg Summer Time
`CCT`	+06:30	Indian Cocos (Island) Time
`MMT`	+06:30	Myanmar Time
`ALMST`	+07:00	Almaty Savings Time
`CVT`	+07:00	Christmas Island Time (Indian Ocean)
`CXT`	+07:00	Christmas Island Time (Indian Ocean)
`DAVT`	+07:00	Davis Time (Antarctica)
`ICT`	+07:00	Indochina Time
`JAVT`	+07:00	Java Time
`KRAST`	+07:00	Krasnoyarsk Summer Time
`NOVST`	+07:00	Novosibirsk Summer Time
`OMSST`	+07:00	Omsk Summer Time
`WAST`	+07:00	West Australian Std Time
`JT`	+07:30	Java Time
`AWST`	+08:00	Western Australia
`BNT`	+08:00	Brunei Darussalam Time
`BORT`	+08:00	Borneo Time (Indonesia)
`CCT`	+08:00	China Coast Time
`HKT`	+08:00	Hong Kong Time
`IRKT`	+08:00	Irkutsk Time
`KRAT`	+08:00	Krasnoyarsk Standard Time
`MYT`	+08:00	Malaysia Time
`PHT`	+08:00	Phillipine Time
`ULAT`	+08:00	Ulan Bator Time
`WADT`	+08:00	West Australian DST
`WST`	+08:00	West Australian StandardTime
`MT`	+08:30	Moluccas Time
`AWSST`	+09:00	Western Australia Time
`IRKST`	+09:00	Irkutsk Summer Time
`JAYT`	+09:00	Jayapura Time (Indonesia)
`JST`	+09:00	Japan Std Time, USSR Zone 8
`KST`	+09:00	Korea Standard Time
`PWT`	+09:00	Palau Time
`ULAST`	+09:00	Ulan Bator Summer Time
`WDT`	+09:00	West Australian DST
`YAKT`	+09:00	Yakutsk Time
`ACST`	+09:30	Central Australia
`CAST`	+09:30	Central Australian ST
`SAST`	+09:30	South Australian Std Time
`SAT`	+09:30	South Australian Std Time
`AEST`	+10:00	Australia Eastern Std Time
`DDUT`	+10:00	Dumont-d'Urville Time (Antarctica)
`EAST`	+10:00	East Australian Std Time
`EST`	+10:00	Australia Eastern Std Time
`GST`	+10:00	Guam Std Time, USSR Zone 9
`KDT`	+10:00	Korea Daylight Time
`LIGT`	+10:00	From Melbourne, Australia
`MPT`	+10:00	North Mariana Islands Time
`PGT`	+10:00	Papua New Guinea Time
`trUK`	+10:00	Truk Time
`VLAT`	+10:00	Vladivostok Time
`YAKST`	+10:00	Yakutsk Summer Time
`YAPT`	+10:00	Yap Time (Micronesia)
`ACSST`	+10:30	Central Australia Time
`CADT`	+10:30	Central Australian DST
`CST`	+10:30	Australia Central Std Time
`LHST`	+10:30	Lord Howe Standard Time, Australia
`SADT`	+10:30	South Australian Daylight Time
`AESST`	+11:00	Eastern Australia
`LHDT`	+11:00	Lord Howe Daylight Time, Australia
`MAGT`	+11:00	Magadan Time
`NCT`	+11:00	New Caledonia Time
`PONT`	+11:00	Ponape Time (Micronesia)
`VLAST`	+11:00	Vladivostok Summer Time
`VUT`	+11:00	Vanuata Time
`ANAT`	+12:00	Anadyr Time (Russia)
`CKT`	+12:00	Cook Islands Time
`GILT`	+12:00	Gilbert Islands Time
`IDLE`	+12:00	International Date Line, East
`KOST`	+12:00	Kosrae Time
`MAGST`	+12:00	Magadan Summer Time
`MHT`	+12:00	Kwajalein Time
`NZST`	+12:00	New Zealand Standard Time
`NZT`	+12:00	New Zealand Time
`PETT`	+12:00	Petropavlovsk-Kamchatski Time
`TVT`	+12:00	Tuvalu Time
`WAKT`	+12:00	Wake Time
`WFT`	+12:00	Wallis and Futuna Time
`CHAST`	+12:45	Chatham Island Time
`ANAST`	+13:00	Anadyr Summer Time (Russia)
`NZDT`	+13:00	New Zealand Daylight Time
`PETST`	+13:00	Petropavlovsk-Kamchatski Summer Time
`PHOT`	+13:00	Phoenix Islands (Kiribati) Time
`TOT`	+13:00	Tonga Time
`CHADT`	+13:45	Chatham Island Daylight Time
`LINT`	+14:00	Line Islands Time (Kiribati)

I mentioned earlier in this section thatanINTERVALvaluerepresents a time span. I also mentioned

postgresql 时间类型

爱华网本文地址 » http://www.aihuau.com/a/25101012/117527.html

PostgreSQL时间时区类型 postgresql 时区设置

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