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PostgreSQL(ݥȥ쥹塼)ˤĤƤ褯Ȥβ(FAQ)

ʸǽ: Last updated: Tue Apr 24 17:29:38 EDT 2007

ߤΰݻ: Bruce Momjian (bruce@momjian.us)
Maintainer of Japanese Translation: Jun Kuwamura (juk at PostgreSQL.jp)

ʸκǿǤ http://www.postgresql.org/docs/faqs.FAQ.html Ǹ뤳Ȥ
ޤ

ץåȥۡͭμˤĤƤ: http://www.postgresql.org/docs/faq/
˲ޤ

(ʲԤˤ [  ] ȤǰϤǵޤ)
[
        ܸǤFAQϡ
                http://www.postgresql.org/docs/faqs.FAQ_japanese.html
        ˤޤ
        ǿܸǤˤĤƤϡʸκǸˤܸǤˤĤơפ򤴤󤯤

]



                                 Ūʼ

1.1) PostgreSQLȤϲǤθƤϡ
1.2) ï PostgreSQL 򥳥ȥ뤷Ƥޤ
1.3) PostgreSQLϤɤʤäƤޤ
1.4) PostgreSQL򥵥ݡȤץåȥۡϡ
1.5) PostgreSQLϤɤǤޤ
1.6) ǿΥ꡼ϤɤǤ
1.7) ݡȤϤɤǼޤ
1.8) ХݡȤϤɤΤ褦ȯޤ
1.9) ΤΥХ̵̤ǽϤɤäƸĤޤ
1.10) ɤΤ褦ʸ񤬤ޤ
1.11) SQLϤɤгؤ٤ޤ
1.12) ѥå󶡤ꡢȯ໲äˤϤɤФ褤Ǥ
1.13) ¾DBMS٤PostgreSQLϤɤʤΤǤ
1.14) PostgreSQLϹκǿβƻ֤ѹ򰷤ޤ

                          桼饤Ȥμ

2.1) PostgreSQL ˤϤɤʥ󥿡եȤޤ
2.2) PostgreSQL  Web ڡϢȤˤϤɤʥġ뤬ޤ
2.3) PostgreSQL ˥ե롦桼󥿡եϤޤ

                                 μ

3.1) ɤСPostgreSQL/usr/local/pgsql ʳξ˥󥹥ȡǤޤ

3.2) ¾ΥۥȤ³ϤɤΤ褦椷ޤ
3.3) ɤǽ뤿ˤϡǡ١󥸥ɤΤ褦Ĵޤ

3.4) ɤΤ褦ʥǥХǽȤޤ
3.5) ³褦ȤȤ 'Sorry, too many clients' ФΤϤʤǤ
3.6) PostgreSQLΥåץ졼ɤμϤɤʤޤ
3.7) ϡɥˤϤɤΤ褦ʥԥ塼ȤФ褤Ǥ

                                 μ

4.1) ǽΤĤΥΤߤ select ˤϤɤޤʥ
4.2) 줿ơ֥롢ǥåǡ١ӡ桼ɤΤ褦
ƸĤФޤ
4.3) ΥǡפѹˤϤɤޤ
4.4) ơ֥롢ǡ١κ祵ϡ
4.5) ŪʥƥȥեΥǡ¸ˤϡǡ١Υǥ
ϤɤΤ餤ɬפǤ
4.6) ꤬٤ΤϤʤǤ礦ʤǥåȤʤΤǤ礦
4.7) ꥪץƥޥɤΤ褦˥ɾƤ򡢸ˤϤɤ

4.8) ɽǤθʸȾʸȤ̤ʤɽϤɤΤ褦˼¸
ޤʸȾʸȤ̤ʤΤΥǥåϤɤΤ褦˻Ȥ
ޤ
4.9) ǡեɤ NULL Ǥ뤳Ȥ򸡽ФˤϤɤޤ
NULLβǽΤΤɤΤ褦ϢǤޤ? եɤNULLɤ
ǤɤΤ褦˥ȤǤޤ
4.10) ʸΤ줾ΰ㤤ϲǤ
4.11.1) (serial)ưʬեɤϤɤΤ褦ˤĤޤ
4.11.2) SERIALǡͤϡɤޤ
4.11.3) currval() ¾Υ桼Ȥζ֤˴٤뤳ȤϤʤǤ
4.11.4) ȥ󥶥ǤȤˤ⤦ɥֹ椬Ȥʤ
ϤʤǤ󥹡SERIAL˶ΤϤʤǤ
4.12) OID ȤϲǤ TID ȤϲǤ
4.13) 顼å "ERROR: Memory exhausted in AllocSetAlloc()"ФΤϤ
Ǥ
4.14) ɤΥС PostgreSQL 餻ƤΤĴ٤ˤϤɤޤ
4.15) ߤλ郎ǥեȤȤʤ褦ʥϤɤΤ褦ˤĤޤ
4.16) (outer join)ϤɤΤ褦˼¸ޤ?
4.17) ʣΥǡ١Ȥ䤤碌ϤɤΤ褦ˤФǤޤ
4.18) ؿʣΥޤϥ֤ˤϤɤޤ
4.19) PL/PgSQL δؿǰơ֥˥Ȥɤ "relation
with OID ##### does not exist" Ȥ顼ΤǤ礦
4.20) ɤΤ褦ʥץꥱΥ塼󤬤ޤ
4.21) ơ֥ȥ̾꡼ǧʤΤϤʤǤʤ
ʸ(ԥ饤)ϲ¸ʤΤǤ?

                              ܸ˴ؤ

5.1) ܸ줬ޤʤΤϤʤǤ
5.2) psql Windows饢Ȥˡܸ줬ʸΤǤ


                                 Ūʼ

1.1) PostgreSQLȤϲǤθƤϡ

PostgreSQLPost-Gres-Q-L(ݥȡ쥹塼) ȯޤ

ޤȤˤäƤñ Postgres ȤƻȤޤȯʹͤ
ˡ MP3եޥåȤβե뤬ޤ

PostgreSQL ϥ֥-졼ʥǡ١ƥǡŪʾѥ
١ƥˡDBMSƥ˸褦ʲɤܤ줿ħͭ
ޤPostgreSQLϡ̵Ǵʥɤ뤳ȤǤޤ

PostgreSQL γȯϡۤȤɤˤҤäܥƥγȯԤˤä
󥿡ͥåȤ̤ߥ˥ˤäƹԤƤޤߥ˥ƥ
ˤץȤǤ뤿ᡢɤδȤ⤦ޤ󡣳ȯ˻ä
 http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html ˤ볫ȯ
FAQ򸫤Ƥ

1.2) ï PostgreSQL 򥳥ȥ뤷Ƥޤ

PostgreSQL֡Ѱ񡢤뤤ϡȥ򤹤ҤõȤƤ
ᤶ򤨤 ---- ¸ߤʤΤǤ桹ϡ濴Ȥʤ륳ߥåƥCVSߥ
ޤΥ롼פϥȥ뤹뤿Ȥ⡢Τ
ΤǤǤϡץȤϡǤ⻲äǤ볫ȯԤȥ桼Υߥ
ƥˤդޤɼԤʤФʤʤȤϡ᡼󥰥ꥹ
򥵥֥饤֤ơ˻ä뤳ȤǤDeveloper's FAQˤϡPostgreSQL
ȯ˲äˤĤƤξ󤬤ޤ

1.3) PostgreSQL ϤɤʤäƤޤ

PostgreSQL ϲ˽ޤ

PostgreSQLϸŤBSD饤󥹤βۤƤޤϴŪˤϡ
ѼԤΥɤ򹥤Ѥ뤳ȤƤޤ¤ȤС
ΥեȥȼʤˤƤˡŪǤ桹碌뤳Ȥ
ʤȤȤǤޤɽΥեȥΤ٤Ƥʣɽ
뤳ȤɬפǤʲˡ桹ºݤ˻ȤäƤBSDѵ򼨤ޤ

    [
        ʸϱѸǤͤȤơʸʻǺܤޤ
    ]


PostgreSQL Data Base Management System

Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group Portions
Copyright (c) 1994-1996 Regents of the University of California

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement is
hereby granted, provided that the above copyright notice and this paragraph and
the following two paragraphs appear in all copies.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST
PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND
THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

        POSTGRESQL ǡ١ƥ

        ʬŪ (c) 1996-2007, PostgreSQLݳȯ
        ʬŪ (c) 1994-1996 ե˥ܹ


          ܥեȥӤʸ켰Ͼ嵭ɽȡʸ
        Ӥ³ĤƤʣźդƤ¤ˤ
        ơѡʣդεĤ򡢤ʤŪǤäƤ⡢
        ̵ǤƱս̵˹Ԥʤ뤳Ȥ򤳤ǧޤ

          ե˥ؤϡʤԤˤƤ⡢פβ
        ޤࡢľŪŪ̡뤤ɬŪˤ餺
        »ˤĤơȤե˥ؤ»ˤĤ
        ƤȤƤ⡢ڤǤ餤ޤ

          ե˥ؤϡŪˤۤݾڤȡŪ
        Ŭ˴ؤƤϤȤꡢ˸¤餺ʤݾڤ
        뤳ȤޤʲѰդ줿եȥϡ֤Τޤޡפ
        ܸȤե˥ؤϤݻٱ硢ɤ
        뤤Ͻ̳餤ޤ

    [
        ˴ؤʸϾ嵭αѸˤɽǤܸϤޤ
        ٤ȤƤ
    ]


1.4) PostgreSQL򥵥ݡȤץåȥۡϡ

ŪˡǶUnixߴץåȥۡǤPostgreSQLƯϤ
꡼λǼºݤ˥ƥȤԤʤäȤ𤬤ʤ줿ץåȥۡ
ĤƤϥ󥹥ȡ󤷤Ƥޤ

PostgreSQL ϡWin2000 SP4, WinXP, ơWin2003 ʤ Microsoft Windows NT
Υڥ졼ƥ󥰥ƥǡͥƥ֤ޤ餫ѥå
줿󥹥ȡ餬 http://pgfoundry.org/projects/pginstaller ˤꡢѤǤ
ޤMSDOS١WindowsΥС(Win95, Win98, WinMe)ǤϡCygwinȤä
PostgreSQL 餻뤳ȤǤޤ

    [
        pgInstaller FTPߥ顼Ȥ win32 ǥ쥯ȥ꤫ǽǤ
            http://www.postgresql.org/mirrors-ftp.html

        ܤϡ WindowsǤ˴ؤFAQ򤴤󤯤
        http://old.postgresql.jp/wg/jpugdoc/FAQ_windows.ja.html
    ]


ΥȤ Novell Netware 6 ؤΰܿǤ⤢ޤ http://forge.novell.com 
OS/2 (eComStation) Сϡ http://hobbes.nmsu.edu/cgi-bin/h-search?
sh=1&button=Search&key=postgreSQL&stype=all&sort=type&dir=%2Fˤޤ


1.5) PostgreSQL ϤɤǤޤ

Web֥饦ͳȡ http://www.postgresql.org/ftp/줫顢ftpͳȡ
ftp://ftp.PostgreSQL.org/pub/ Ȥޤ

1.6) ǿΥ꡼ϤɤǤ

PostgreSQL κǿǤϥС 8.2.4 Ǥ

桹ϡ1ǯ˥᥸㡼꡼򡢿ȤΥޥʡ꡼ԤʤȤ
褷Ƥޤ

    [
        Сֹ x.y.z κǽ x.y ᥸㡼꡼ֹ
        Ǹ z ޥʡ꡼ֹˤʤޤ᥸㡼꡼
        ֹ椬ƱǤСǡ١饹˸ߴޤ
    ]


1.7) ݡȤϤɤǼޤ

PostgreSQL ߥ˥ƥ¿Υ桼ΤˡŻҥ᡼ͳλٱ󶡤Ƥ
ޤŻҥ᡼ꥹȤ򥵥֥饤֤뤿ΥᥤȤʤ륦֥Ȥ
http://www.postgresql.org/community/lists/Ǥ줫顢ϤΤǤ
general ޤϡbugs ȤäꥹȤ褤Ǥ礦

᥸㡼IRC ͥϡFreenode (irc.freenode.net) #postgresql Ȥ
ͥǤUNIX ޥɤǤϡ irc -c '#PostgreSQL' "$USER" irc.freenode.net
ȤäƻäǤޤƱͥåȥˡڥΥͥ (#
postgresql-es)ե󥹸Υͥ (#postgresqlfr)֥饸ͥ (#
postgresql-br) ⤢ޤޤEFNetˤPostgreSQLͥ뤬ޤ

    [:
          1999ǯ723ܥݥȥ쥹桼άJPUGΩޤ
        JPUG ȿǡPostgreSQLѤã߶ϤξȤʤäƤޤ
        (2006ǯ ư(NPO)ˡPostgreSQL桼ˤʤޤ
        Webβ̵ǤβȲι׸
          ϱĤƤޤ)
        ܤϡJPUG Web :
                http://www.PostgreSQL.jp/
        򤴤󤯤

        ܸIRCͥ '#PostgreSQL:*.jp' ¸ߤޤ
    ]


ѥݡȲҤΥꥹȤ http://www.postgresql.org/support/
professional_supportˤޤ

1.8) ХݡȤϤɤΤ褦ȯޤ

http://www.postgresql.org/support/submitbug PostgreSQL ХեˬƤ
ХݡȤФˤĤƤμȻؿˤޤ

Ʊ ftp  ftp://ftp.PostgreSQL.org/pub/ ǡǿС
PostgreSQL õƤߤƤ

1.9) ΤΥХ̵̤ǽϤɤäƸĤޤ

PostgreSQLϳĥ줿SQL:2003Υ֥åȤ򥵥ݡȤޤ桹Υڡ TODO
ꥹȤˡΤΥХǽ侭ײˤĤƤεҤޤ

ħ׵̼Τ줫βˤޤ

  ˤˤ뵡ǽϡ TODO ꥹȤǤ
  Τ褦ʵǽޤƤޤ󡣤ϡ
      SQLʤ˽ऺ¸εǽȽʣ
      ɤʣФơΤʤǽ
      Τʤǽ
  ǽϡ TODO ΥꥹȤ˲äޤ

桹ϡPostgreSQL ˴ؤơŻҥ᡼ľб TODO ꥹȤǿ˹
Ƥ椯ۤŪǤ뤳ȤΤäƤޤΤǡХץƥϻȤޤ
󡣸¤ˡΥեȥǥХϤۤĹϤ³ޤ󤷡¿Υ
˱ƶХޤ˽ޤPostgreSQLΥ꡼ǡ٤Ƥѹ
ơΤꤿС CVS Υå򸫤Ƥ
꡼ΡȤˤΥեȥ˲ä줿٤Ƥѹ夵Ƥ


1.10) ɤΤ褦ʸ񤬤ޤ

դˡĤΥޥ˥奢ȥ饤󡦥ޥ˥奢(ޥ˥奢롦ڡ)
ӤĤξʥƥ꤬ޤޤޤ /docǥ쥯ȥ򤴤󤯤
ޤޥ˥奢ϡ http://www.PostgreSQL.org/docs/ǥ饤ǤǤ


    [:
        JPUG ʸ񡦽ҴϢʬʲ줿ޥ˥奢⤢ޤ

        http://www.postgresql.jp/document/pg803doc/
        ץ쥹顢

        PostgreSQLեޥ˥奢ȤƽǤƤޤ

    ]


饤ǻȤǤ PostgreSQL ܤ2ޤ http://www.PostgreSQL.org
/docs/books/awbook.html

    [:
        ܤϡJPUGPostgreSQL Bookʬʲ
        졢ԥ󤫤
        ֤ϤƤPostgreSQLפȤƽǤƤޤ
    ]


ӡ http://www.commandprompt.com/ppbook/Ǥ

    [:
        ˮϡּ PostgreSQL
        饤꡼ǤƤޤ
    ]


ǽʽҤϿϡhttp://techdocs.PostgreSQL.org/techdocs/bookreviews.php
ˤޤ PostgreSQL Ѿ󵭻⡢http://techdocs.PostgreSQL.org/ ˤ
ޤ

    [:
        ܸνˤĤƤϡPostgreSQL桼Ρhttp://www.postgresql.jp/PostgreSQL/references.html
        ⤴󤯤
    ]


ޥɥ饤Υ饤ȥץpsql ˤ⡢黻ҡؿ󡢤¾
ξĴ٤뤿ˡ餷 \d ޥɤĤޤ \? Ϥ
Ѳǽʥޥɤɽޤ

桹 Web Ȥˤϡʸ񤬤ޤ

1.11) SQL Ϥɤгؤ٤ޤ

ޤ嵭ǽҤ٤ PostgreSQL ˤĤƤܤɤळȤƤƤ⤦
ȤĤϡ "Teach Yourself SQL in 21 Days, Second Edition" at http://
members.tripod.com/er4ebus/sql/index.htmǤ

The Practical SQL Handbook, Bowman Judith S. et al., Addison-Wesley ¿Υ
˹ɾǤۤǤϡThe Complete Reference SQL, Groff et al., McGraw-Hill
⹥ɾǤ

餷ϡ
 
http://www.intermedia.net/support/sql/sqltut.shtm
http://sqlcourse.com
http://www.w3schools.com/sql/default.asp
http://mysite.verizon.net/Graeme_Birchall/id1.html ˤޤ

    [:
         PostgreSQL桼ܸλʸξҲڡ

http://www.postgresql.jp/PostgreSQL/references.html
        ޤ
         ƣľʸΡֽ鿴ԸΣģ߷硦ӣѣ绲ͽҲפΥʡ
                http://www.shonan.ne.jp/~nkon/ipsql/books_SQL.html
        ޤ(Ť2000ǯ)
         ѱѻΡPostgreSQLܸޥ˥奢
                http://www.net-newbie.com/
        Ǥϥ饤ޥ˥奢θǤޤ
         ݻ׻UNIX ǡ١
                http://www.wakhok.ac.jp/DB/DB.html
        ⥪饤ɤळȤǤޤ
         Nikkei BP IT Pro ˤаã׻ PostgreSQL å
        Ǥ󿷤ȤꤢƤޤ
    ]


1.12) ѥå󶡤ꡢȯ໲äˤϤɤФ褤Ǥ

ʳȯԸΡDeveloper's FAQ򤴤󤯤

1.13) ¾DBMSPostgreSQLϤɤʤΤǤ

եȥפˡˤϤĤޤǽǽȿȥݡȤȲ
Ǥ

ǽ(Features)
    PostgreSQLϡȥ󥶥󡢥֥ꡢȥꥬӥ塼
    ȡӡ줿åʤɡ絬Ͼ DBMSĵǽۤȤ
    ɻäƤޤ PostgreSQLϡ桼Ѿ롼롢줫顢
    å̾ޥСƱʤɡDBMS碌
    褦ʵǽ򤤤Ĥ碌Ƥޤ
ǽ(Performance)
    PostgreSQL¾ξѤ뤤ϥץ󥽡Υǡ١ȸ߳Ѥǽ
    ޤ̤ǤϤᤫäꡢ̤ۤǤϤ٤äꤷޤ¾Υǡ
    ١٤ǽϡդĤ +/-10% 餤Ǥ礦
(Reliability)
    桹ϡDBMSο⤯ʤƤϤβ̵ͤȤ򤷤Ƥޤʬ
    ȤơꤷɤХǾˤƤ꡼褦ؤƤޤ
    줾Υ꡼ϾʤȤ1 ʾΥ١ƥȤԤʤ
    ǤΥ꡼򤬡ǤȤưꤷǤʥ꡼Ǥ뤳Ȥʪ
    ƤޤʬǤϡ¾Υǡ١٤Ƥ½ʤȤ˼
    äƤޤ
ݡ(Support)
    桹Υ᡼󥰥ꥹȤϡ뤤ʤˤĤƤؤμ
    Ƥ롢ȯԤ桼礭ʽޤؤ󶡤Ƥޤ桹
    βݾڤ뤳ȤϤǤޤ󤬡ѥǡ١ǤäƤ˲褵
    櫓ǤϤޤ󡣳ȯԤ䡢桼ߥ˥ƥޥ˥奢ࡢ
    ɤʤɤľܥǤ뤳ȤˤäơPostgreSQLΥݡȤ
    ¾DBMS ݡȤͥ줿ΤȤʤäƤޤ˾ơ
    ѥݡȤʤɤ⤢ޤFAQ1.7򤴤󤯤ˡ
(Price)
    PostgreSQLѤϡѤǤѤǤ⡢٤̵Ǥ嵭˼ƤBSD
    λѵ˳ʤ¤ꡢPostgreSQLΥɤ̵ǾʤȤ
    ळȤǤޤ

1.14) PostgreSQLϹκǿβƻ֤ѹ򰷤ޤ

罣βƻ֤ѹϡPostgreSQLΥ꡼8.0.4ʹ[4+]ȡθΥ᥸㡼
꡼Ȥ 8.1 ˤϴޤޤƤޤʥȥȥꥢѹϡ
8.0.[10+], 8.1.[6+] ӡθΥ᥸㡼꡼Τ٤Ƥ˴ޤޤޤ8.0
PosrgreSQLǤϥڥ졼ƥ󥰥ƥΥॾǡ١ƻ
Τ˻ȤäƤޤ



                          桼饤Ȥμ

2.1) PostgreSQL ˤϤɤʥ󥿡եȤޤ

PostgreSQL Υ󥹥ȡ˴ޤޤʪCȹ CΥ󥿡եǤ
¾Υ󥿡եΩץȤǡ̡˥ɤޤ
ʬ뤳Ȥǡ줾γȯबȼΥ꡼塼ĤȤ
ޤ

PHP Τ褦ʤĤΥץߥ󥰸ϡ PostgreSQLΥ󥿡եޤ
ǤޤPerl, TCL, Python, ơΤۤѲǽʸΥ󥿡ե
ϡ http://gborg.postgresql.org  Drivers/Interfaces ȥ󥿡ͥå
θǤߤĤޤ

2.2) PostgreSQL  Web ڡϢȤˤϤɤʥġ뤬ޤ

ǡ١΢˻ Web ڡˤĤƤ餷Ҳ𤬡
http://www.webreview.comˤޤ

Web ؤγĥΤˤϡPHP(http://www.php.net/) ۤ󥿡եȤ
äƤޤ

    [:
          PHP˴ؤܸξϡ2000ǯ419ȯ­PHP桼Υ
                http://www.php.gr.jp/
        뤤ϡע वΥ
                http://www.geocities.jp/rui_hirokawa/php/
        ˤʤޤȤƤޤ
    ]


ʣʾ硢¿οͤ Perl 󥿡ե CGI.pm  mod_perl Ȥ
ޤ

2.3) PostgreSQL ˥ե롦桼󥿡եϤޤ

Ѥȥץ󥽡ȯԤˤξǡPostgreSQLˤ¿GUIġ뤬
ǽǡܺ٤ʥꥹȤϡPostgreSQLߥ˥ƥʸǤ󤯤



                                 μ

3.1) ɤΤ褦ˤ /usr/local/pgsql ʳξ˥󥹥ȡǤޤ

ñˡϡ configure 餻Ȥ --prefix ץꤹ뤳ȤǤ


3.2) ¾ΥۥȤ³ϤɤΤ褦椷ޤ

ͤǤϡPostgreSQL  Unix ɥᥤ󥽥åȡޤϡTCP/IP³Υ
󤫤³ޤpostgresql.conf  listen_addresses 
ġ$PGDATA/pg_hba.conf եŬڤľơۥȼƳǧڤͭˤ
ʤϡ¾Υޥ󤫤³ǤʤǤ礦

3.3) ɤǽ뤿ˤϡǡ١󥸥ɤΤ褦Ĵޤ


ǽβǽΤꤽʼΰ褬3Ĥޤ

ѹ
    Ƥɤǽ뤳Ȥޤߤޤ
      ʬǥåޤࡢǥå
      ʣINSERTΤCOPY
      ʣʸ򥰥롼ײ1ĤΥȥ󥶥ˤƥߥåȤΥХإ
        ɤ︺
      ǥå餫ΥФȤCLUSTER
      νϤΥ֥åȤ֤LIMIT
      Ƥ륯
      ץƥޥΤפݻ뤿ANALYZE
      VACUUM ޤ pg_autovacuum ξ
      礭ʥǡѹΤȤϥǥå


й
    postgresql.confΤĤǽ˱ƶޤܤϡ
    Administration Guide/Server Run-time Environment/Run-time Configuration 
    ꥹȤ򤴤󤯤( JPUGȤܸ)ơȤơ
    http://www.varlena.com/varlena/GeneralBits/Tidbits/annotated_conf_e.html 
    ӡ http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html 򤴤
    󤯤

ϡɥ
    ǽˤϡɥαƶ http://www.powerpostgresql.com/PerfList/
    ȡ http://momjian.us/main/writings/pgsql/hw_performance/index.html (JPUG
    Ȥܸ) ˽Ҥ٤Ƥޤ


    [:
      JPUGĹҲ͵ˤ롢ֺǤPostgreSQL塼˥󥰡
      Ȥʡ ThinkIT ȤˤꡢºȤλͤˤʤޤ
        http://www.thinkit.co.jp/free/tech/10/1/1.html
    ]


3.4) ɤΤ褦ʥǥХǽȤޤ

йѿˤ¿ log_* ꡢȥץפϤ뤳Ȥ
ǥХǽ¬ˤȤƤǤ

3.5) ³褦ȤȤ 'Sorry, too many clients' ФΤϤʤǤ

Ǥ¤Ǥ 100 Υǡ١åãƤޤäƤޤ
postmasterƱ³ǤХåɥץ¿䤹ɬפޤ
postgresql.conf  max_connections ͤѹ postmasterƵư뤳
ȤDzǽˤʤޤ

3.6) PostgreSQLΥåץ졼ɤμϤɤʤޤ

СֹդˤˤĤơ̤ˤĤƤβ http://
www.postgresql.org/support/versioning 򡢤ơܺ٤ˤĤƤ http://
www.postgresql.org/docs/current/static/install-upgrading.html 

ǽPostgreSQLΥ᥸㡼꡼Ϥǯ1ٹԤʤޤ
᥸㡼꡼ϡȤС8.18.2ؤΤ褦ˡСֹ1ܤ2
ܤʬ䤷Ƥ椭ޤ

PostgreSQLΥ᥸㡼꡼̾ƥơ֥ȥǡեޥå
ѹޤѹϤƤʣʤΤǤǡǡեθߴ
ݻϤޤ󡣥᥸㡼åץ졼ɤΤˤϡǡ١Υ/
ɤɬפˤʤޤ

ޥʡ꡼ϡȤС8.1.5 8.1.6ؤΤ褦ˡСֹ3
ͤ䤷ޤPostgreSQLϡޥʡ꡼ФƤϡХե
Ԥʤޤ󡣤٤ƤΥ桼ϡǤǿΥޥʡ꡼˹
Ǥåץ졼ɤˤϡ˥ꥹĤΤǤ顢PostgreSQLΥޥʡ
꡼Ǥϡˤȯꡢƥ˴طꡢǡĤ֤
Хåץ졼ɤΥꥹǾ¤ˤȤɤޤ桹Υߥ˥
Ǥϡåץ졼ɤꥹ⡢åץ졼ɤʤꥹΤۤ⤤
ȹͤƤޤ

ޥʡ꡼Υåץ졼ɤˤϥפȥꥹȥɬפϤʤǡ١
ФߤơåץǡȤ줿Хʥ򥤥󥹥ȡ뤷Фꥹ
Ȥޤ

3.7) ϡɥˤϤɤΤ褦ʥԥ塼ȤФ褤Ǥ

PCϡɥϤۤȤɸߴޤΤǡۤȤɤοͤϡ٤ƤPCϡ
ƱʼȻפ෹ޤϴְ㤤ǤECC RAM
SCSIӡʼޥܡɤϡ¤ϡɥ٤ȡ꿮
ǽɤΤǤ PostgreSQL ϤۤȤɤΥϡɥDzƯޤ
ǽפʾϡΥϡɥΥץˤĤĴ뤳
ȤǤ桹Υ᡼󥰥ꥹȾǤϡɥץΥȥ졼ɥ
ˤĤƵ뤳ȤǤޤ



                                 μ

4.1) ǽοΤߤ SELECTˤϤɤޤʥ

äοԤΥФˡɬפ狼С SELECT ΤȤ
LIMIT Ȥޤ ORDER BY˥ǥåޥå硢ޤä꤬¹
ʤȤ⤢ޤSELECT ΤȤ˲ԤɬפΤʤС
FETCHޤ

SELECTˤϡʸȤޤ

    SELECT col
    FROM tab
    ORDER BY random()
    LIMIT 1;

4.2) 줿ơ֥롢ǥåǡ١ӡ桼ɤΤ褦
ƸĤФޤpsqlǻȤƤ륯ɽˤϤɤޤ

psql  \dtޥɤȤäƥơ֥򸫤뤳ȤǤޤpsql \? 
äơޥɤꥹȤĴ٤뤳ȤǤޤǡpsql Υɤǡ
Хåå女ޥɤϤ pgsql/src/bin/psql/describe.c եɤ
ȤǤޤˤϡ SQL ޥɤʬޤޤޤޤ -E
ץդ psql 򳫻ϤȡϤ줿ޥɤ¹Ԥ뤿Υ
Ϥ褦ˤʤޤ PostgreSQL SQL  INFORMATION SCHEMA 
ե󶡤ޤΤǡǡ١ˤĤƤξ䤤碌뤳Ȥ
ޤ

pg_ ǻϤޤ륷ƥơ֥Ǥ⤳򵭽Ҥ뤳ȤǤޤ

psql -lȤƤΥǡ١ꥹȤޤ

ȡpgsql/src/tutorial/syscat.source ƤߤƤˤϡǡ
١Υƥơ֥뤫뤿ɬפ SELECT ʸޤ

4.3) ΥǡѹˤϤɤޤ

Υǡѹ 8.0 ʹߤǤϡ ALTER TABLE ALTER COLUMN TYPE Ȥ
Ȥˤñˤʤޤ

ΥСǤϡʲΤ褦ˤޤ:

    BEGIN;
    ALTER TABLE tab ADD COLUMN new_col new_data_type;
    UPDATE tab SET new_col = CAST(old_col AS new_data_type);
    ALTER TABLE tab DROP COLUMN old_col;
    COMMIT;

ԤʤäȤϡä줿ԤȤäƤǥ֤뤿
VACUUM FULL tab򤷤ۤɤ⤷ޤ

4.4) ơ֥롢ǡ١κ祵ϡ

¤ϰʲΤȤǤ:

    ǡ١κ祵?        ̵ (32 TB Υǡ١¸ߤ
                                     )
    ơ֥κ祵?            32 TB
    κ祵?                400 GB
    եɤκ祵?          1 GB
    ơ֥Ǥκ?        ̵
    ơ֥Ǥκ祫?      ηˤä 250-1600
    ơ֥Ǥκ祤ǥå   ̵
    ?

󡢤ϼºݤ̵¤ǤϤʤǥ̤ȥ꡼䥹åץڡ
礭ˤ¤ޤǽϤͤȤΤۤ礭ʻ
ޤ

ơ֥륵32TBϥڥ졼ƥ󥰥ƥˤեΥݡ
ɬפȤޤ󡣵ʥơ֥ʣ1GBΥեʬ¸ޤΤǡ
ե륷ƥ¤ϽפǤϤޤ

ǥեȤΥ֥å32kä뤳Ȥǡơ֥륵ȹԥ
祫Ȥ4ܤˤ뤳ȤǤޤޤơ֥륵ϥơ֥ѡ
ƥȤä䤹ȤǤޤ

ҤȤĤ¤ϡ2,000ʸʾĹΥ˥ǥåդ뤳ȤǤ
ȤǤˤ⡢Τ褦ʥǥåϼºݤɬפޤĹ
MD5ϥåδؿǥåϰʤˤݸǡޤեƥȤ
ǥåǤϥñ򸡺뤳ȤǤޤ

4.5) ŪʥƥȥեΥǡ¸ˤϡǡ١Υǥ
ϤɤΤ餤ɬפǤ

̤Υƥȥե PostgreSQL Υǡ١¸ˤϡ5ܤ
ǥ̤ɬפȤޤ

ȤơƹԤȥƥȵҤ 100,000ԤΥեͤƤߤޤ
ƥȤʸʿĹ20ХȤȲꤹȡեåȥե礭
2.8MB ǤΥǡޤ PostgreSQL ǡ١ե礭ϼ
褦5.2MBȸѤ뤳ȤǤޤ

    24 bytes: ƥΥإå()
    24 bytes: (int)եɤȥƥ(text)ե
   + 4 bytes: ڡΥåץؤΥݥ
   ----------------------------------------
    52 bytes per row

   PostgreSQL Υǡڡ 8192Х(8KB)ʤΤ:

   8192 bytes per page
   -------------------   =  146 rows per database page (ڤΤ)
     52 bytes per row

   100000 data rows
   --------------------  =  633 database pages (ڤ夲)
      158 rows per page

  633 database pages * 8192 bytes per page  =  5,185,536 bytes (5.2 MB)

ǥåϡۤɤΥХإåɤ׵ᤷޤ󤬡ǥåդ
ǡޤʾ塢ʤ礭ʤޤ

NULLϥӥåȥޥåפȤ¸Ƥơ餬鷺˥ڡȤޤ

4.6) ꤬٤ΤϤʤǤ礦ʤǥåȤʤΤǤ礦

ǥåϡ٤ƤΥǻȤ櫓ǤϤޤ󡣥ơ֥뤬Ǿ
礭ǤΤ鷺ʥѡơΥ򤹤
åϻȤޤϥǥåˤ굯ʥǥ
ϡơ֥򥹥ȥ졼Ȥɤ缡٤ʤ뤳Ȥ뤫


ǥåȤꤹ뤿ˡPostgreSQL ϥơ֥ˤĤƤ׾
ʤФʤޤ󡣤׾ϡ VACUUM ANALYZEޤϡñ ANALYZE 
ȤäƼ뤳ȤǤޤ׾Ȥäƥץƥޥϥơ֥ˤ
ΤꡢǥåȤ٤ηǤޤ׾
ŬʷˡǤ⵮ŤʤΤ⤢ޤ׾μϡ
֥ƤѤ˷֤ʤ٤Ǥ

ǥåϡ̾ ORDER BY ԤʤˤϻȤޤ󡣽缡
³ŪȤϡʥơ֥Υǥå̤Ϲ®Ǥ


ORDER BYȤ߹蘆줿LIMIT ϡơ֥ξʬ֤ˤ
ӥǥåȤǤ礦

⤷ץƥޥְäƥ󥷥륹򤷤Ȥ˵ʤ
СSET enable_seqscan TO 'off'ꤷơ⤦ټ¹Ԥǥå
󤬤ޤʤ®ʤäƤ뤫ɤߤƤ

LIKE 뤤 ~ Τ褦ʥ磻ɥɱ黻Ҥ̤ʴĶǤȤޤ

  ʸʸκǽˤޤȤС
      LIKE ѥ%ǻϤޤʤ
      ~ (ɽ) ѥ^ǻϤޤʤФʤʤ
  ʸʸ饹Ϥ뤳ȤϤǤޤ󡣤ȤС[a-e]
  ILIKE  ~* Τ褦ʸȾʸ̤ʤϻȤޤ󡣤Τ
    FAQ4.8뼰ǥåȤޤ
  initdb ˤƤϡǥեȤC뤬ȤʤƤϤʤޤ󡣤
    ͳϡCʳǤϼ礭ʸΤ뤳ȤǤʤǤΤ褦
    ʾ硢

    LIKE

    ǥ󥰤ˤƯ褦ʡ̤

    text_pattern_ops

    ǥå뤳ȤǤޤ

8.0Υ꡼Ǥϡǥåϡǡ礦ɥǥåΥ
ηȰפʤСȤʤȤФФޤ餯int2, int8,
 numeric ΥΥǥåǤ

4.7) 䤤碌ץƥޥɤΤ褦䤤碌ɾΤ򸫤ˤϤɤ
ޤ

饤ޥ˥奢 EXPLAIN 򸫤Ƥ

4.8) ɽǤθʸȾʸȤ̤ʤɽϤɤΤ褦˼¸
ޤʸȾʸȤ̤ʤΤΥǥåϤɤΤ褦˻Ȥ
ޤ

~黻ҤɽȹԤʤ~* ʸȾʸ̤ʤ
(case-insensitive)ɽȹԤޤʸȾʸ̤ʤ LIKE 黻
Ҥ ILIKE Ȥޤ

ʸȾʸ̤ʤӤϼΤ褦ɽǤ롧

    SELECT *
    FROM tab
    WHERE lower(col) = 'abc';

ɸ।ǥåǤϻȤ줺ʤ顢⤷ǥåäʤ餽
줬ȤǤ礦

    CREATE INDEX tabindex ON tab (lower(col));

嵭ΥǥåUNIQUEǺ줿硢ʸȾʸǼǤ
ΰ㤤ʸǤäƤƱˤϤʤޤ󡣤ʸ
򥫥˳Ǽˤ CHECK󤫡ȥꥬȤäƤ

4.9) ǡեɤNULL Ǥ뤳Ȥ򸡽ФˤϤɤޤ NULL
Ǥ뤳Ȥ򸡽ФˤϤɤޤեɤNULLɤǤɤΤ褦˥
ȤǤޤ

ʲΤ褦ˡIS NULL  IS NOT NULLǡΥƥȤƤߤޤ

   SELECT *
   FROM tab
   WHERE col IS NULL;

NULLβǽΤΤϢ뤹ˤϡCOALESCE()򼡤Τ褦˻Ȥޤ

   SELECT COALESCE(col1, '') || COALESCE(col2, '')
   FROM tab

NULL֤ǥȤˤϡIS NULL  IS NOT NULL νҤ ORDER BY ǻ
äƤߤޤtrue ΤΤ false ΤΤ⤤ͤȤ¤٤ޤΤǡ
Ǥ NULL εܤ̥ꥹȤξ֤ޤ

   SELECT *
   FROM tab
   ORDER BY (col IS NOT NULL)

4.10) ʸΤ줾ΰ㤤ϲǤ

             ̾                      
    VARCHAR(n) varchar ĹΥꤹ롢ͤʪ̵
    CHAR(n)    bpchar  ꤵ줿ĹȤʤ褦˶򤬵ͤ
    TEXT       text    Ĺ̤ʾ¤̵
    BYTEA      bytea   ĹΥХ(null-byte safe)
    "char"     char    1ʸ

̾ˤܤˤΤϡƥࡦĴ٤Ȥ䡢顼å
ȤǤ

嵭ηΤǽΣĤη "varlena" Ǥ(ʤǥκǽΣ
ȤǡĹǡθ˼ºݤΥǡ³ޤ)Τ褦˼ºݤζ֤
줿礭⾯礭ʤޤĹͤϰ̤Τǡǥ
ζ֤ϻפä⾮ʤޤ

VARCHAR(n) ϲĹʸ¸Τ˺ŬǤ¸ǤʸĹ
¤ޤTEXT Ť̵ʸ¸ΤΤΤǡ 1
ȤǤ CHAR(n)ϡVARCHAR(n)Ϳ줿ʸ¸ΤФ֥
ͤǤĤƱĹʸ¸Τ˺ŬǤBYTEAϡʬŪ
NULL ΥХȤޤХʥǡ¸뤿ΤΤǤΥפƱ
餤ǽޤ

4.11.1) (serial)ưʬեɤϤɤΤ褦ˤĤޤ

PostgreSQL  SERIAL ǡ򥵥ݡȤޤ˥󥹤ư
ޤȤС

    CREATE TABLE person (
        id   SERIAL,
        name TEXT
    );

ϼưŪ˼Τ褦ޤ:

    CREATE SEQUENCE person_id_seq;
    CREATE TABLE person (
        id   INT4 NOT NULL DEFAULT nextval('person_id_seq'),
        name TEXT
    );

    [
        CREATE UNIQUE INDEX person_id_key ON person ( id );
        ϡ 7.3 ʹߤϼưŪˤϹԤʤʤʤޤ
    ]


֤ˤĤƤΤäȾܤϡ饤ޥ˥奢 create_sequence 򤴤
󤯤

4.11.2) SERIALǡͤϡɤޤ

ҤȤĤˡϡnextval() ؿȤäƤͤ(before) SEQUENCE 
֥Ȥ鼡 SERIAL ͤФ줫ºݤ򤹤뤳ȤǤ
4.11.1 Υơ֥ȤȤȡǤϤΤ褦ˤʤޤ

    new_id = execute("SELECT nextval('person_id_seq')");
    execute("INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal')");

ơnew_id ¸ͤ¾Υ(ȤС person ơ֥
볰(foreign key)Τ褦)ȤȤ褤Ǥ礦ưŪ˺줿SEQUENCE
֥Ȥ̾ϡ<table>_<serialcolumn>_seq Τ褦ˤʤꡢΤtable
 serialcolumn Ϥ줾ơ֥̾SERIAL̾Ǥ

뤤ϡͿ줿SERIALͤ򡢤줬ͤȤ줿(after)
currval() ؿȤäƼФȤǤޤȤС

    execute("INSERT INTO person (name) VALUES ('Blaise Pascal')");
    new_id = execute("SELECT currval('person_id_seq')");

4.11.3) currval() ¾Υ桼Ȥζ֤˴٤뤳ȤϤʤǤ

Ϥޤcurrval() ϡ٤ƤΥ桼ǤϤޤ󤬡ɼԤΥå
Ϳ줿ߤ֤ͤޤ

4.11.4) ȥ󥶥ǤȤˤ⤦ɥֹ椬Ȥʤ
ϤʤǤ󥹡SERIAL˶ΤϤʤǤ

Ʊ뤿ˡ¹Υȥ󥶥ˡɬפ˱ƥȥ󥶥
󤬽λޤǥåʤ褦ͤͿƤޤΤȥ
ǤֹƤ˥åפޤ

4.12) OID ȤϲǤ CTID ȤϲǤ

ơ֥뤬WITH OIDSǤĤ줿ϡ줾Υ˰դOIDޤ
OIDϼưŪ4ХȤͿ졢ϡ󥹥ȥ졼̤ư
ͤȤʤޤ40ǥСեơOIDϽʣ򤷤Ϥ
PostgreSQLƥơ֥˥󥯤뤿OID Ȥޤ

桼Υơ֥Υ˰դֹդ뤿ˤϡ OID ǤϤʤ SERIAL 
ΤǤ褤Ǥ礦SERIALϢ֤1ĤΥơ֥ǤΤ߰դˤʤ뤫ǡ
Сե򵯤ˤȹͤޤ 8ХȤΥͤ¸뤿
ˡSERIAL8ޤ

CTID ϡʪ֥åȥեåȤͤǼ̤뤿˻Ȥޤ
CTIDϡ줿ɹߤ줿ȤѤޤޤʪ򺹤
˥ǥåεܤ˻Ȥޤ

4.13) 顼å "ERROR: Memory exhausted in AllocSetAlloc()"ФΤϤ
Ǥ

餯ƥβۥ꡼ƻȤ̤ƤޤäƤǽ뤫
ͥ뤬꥽ˤĤƤͤ㤹ǽޤpostmaster
ưˤƤߤƤ

    ulimit -d 262144
    limit datasize 256m

ˤäơɤ餫ҤȤĤǤ礦ϥץΥǡ
¤⤯ꤷ֤󥯥꤬뤹褦ˤʤǤ礦Υ
ɤϸԤΥץȡΥޥɤ餻˺ƤΥ֥ץ
ĤŬѤޤХåɤȤƤ¿Υǡ֤SQL 饤
Ȥ꤬³ƤΤǤС饤Ȥ򳫻ϤˤƤߤƤ


4.14) ɤΥС PostgreSQL 餻Ƥ뤫Ĵ٤ˤϤɤޤ

psql  SELECT version(); 򥿥פޤ

4.15) ߤλ郎ǥեȤȤʤ褦ʥϤɤΤ褦ˤĤޤ

CURRENT_TIMESTAMPȤޤ:

    CREATE TABLE test (x int, modtime TIMESTAMP DEFAULT CURRENT_TIMESTAMP );

4.16) (outer join)ϤɤΤ褦˼¸ޤ?

PostgreSQL  SQL ɸ๽ʸȤ(祤)򥵥ݡȤޤ
 2Ĥ꤬ޤ

    SELECT *
    FROM t1 LEFT OUTER JOIN t2 ON (t1.col = t2.col);

뤤

    SELECT *
    FROM t1 LEFT OUTER JOIN t2 USING (col);

ξħŪʥǤ t1.col  t2.col ȷ礷ơt1 η礵ʤä
(t2 Ȱפʤä)֤ƤޤRIGHT  t2 η礵ʤä
äǤ礦FULL ϡפ t1  t2 Ϸ礵ʤä
֤Ǥ礦OUTER Ȥդϥץ LEFT, RIGHT, ޤ FULL 
ɤηꤵƤޤ̾INNERȸƤФޤ

4.17) ʣΥǡ١Ȥ䤤碌ϤɤΤ褦ˤФǤޤ

ԤΥǡ١ʳؤ䤤碌ˡϤޤ󡣤ȤΤPostgreSQL
ǡ١ͤΥƥ५ɤ߹िǡˤϡȤΤդ
ˤǡ١ۤ䤤碌򤹤뤹٤ޤ

contrib/dblink ϥǡ١(cross-database)䤤碌ؿƽФˤ
ޤ󡢥饤ȤƱ³̤Υǡ١ؤĥʤƤϤ
餺̤򥯥饤¦ǥޡʤƤϤʤޤ

4.18) ؿʣΥޤϥ֤ˤϤɤޤ

֤ؿ(Set Returning Functions): http://www.postgresql.org/docs/
techdocs.17

ȤȴñǤ



4.19) PL/PgSQL δؿǰơ֥˥Ȥɤ "relation
with OID ##### does not exist" Ȥ顼ΤǤ礦

PL/PgSQL ϴؿץȤ򥭥å夷Թˤ⤽Ѥǡ PL/PgSQLؿ
ơ֥˥硢ǤΥơ֥äƺʤ졢ؿ
ٸƤӽФȡδؿϥå夷ƤؿƤϤޤŤơ
֥򺹤ޤޤǤΡȤơPL/PgSQL EXECUTE 
ơ֥ؤΥΤ˻Ȥޤȡѡľ
褦ˤʤޤ

4.20) ɤΤ褦ʥץꥱΥ塼󤬤ޤ

֥ץꥱפȰǤޤץꥱ򤹤뤿εѤϤ
Ĥꡢ줾졢ȷޤ

ޥ졼֤Υץꥱϡɤߡ񤭤Υ륷󥰥ޥ
ǽǡ졼֤ǤɤߡSELECT䤤碌դ뤳ȤǤޤ
Ǥ͵롢ե꡼ѤǤ롢ޥݥ졼֤PostgreSQLץꥱ
󥽥塼ϡ Slony-I Ǥ

ޥݥޥΥץꥱϡɤߡ񤭤ΥȤꡢʣΥץ
Ȥ륳ԥ塼뤳ȤǤޤεǽϡд֤ѹƱ
ɬפʤᡢǽ˽ʾ׷Ϳޤ PGCluster ϡΤ褦ʥ塼
ȤPostgreSQLΤ˥ե꡼ѤǤΤȤơǤ͵ޤ

¾ˤ⡢Ѥϡɥݥ١Υץꥱ󥽥塼󤬤
ʥץꥱǥ򥵥ݡȤƤޤ

4.21)ơ֥ȥ̾꡼ǧʤΤϤʤǤʤʸ
(ԥ饤)ϲ¸ʤΤǤ?

ǧ줿̾ΤäȤŪʸϡơ֥ݤˡơ֥䥫
ϤŰλѤǤŰȤȡơ֥ȥ̾ʼ
ҤȤޤˤʸȾʸζ̤򤷤ƳǼޤäơpgAdminΤ
˥ơ֥ΤȤ˼ưŪŰȤΤϥǤ̾
ȤȤŰդʤƤϤʤʤȤ̣ޤΤᡢ̻
ǧ뤿ˤϰʲΤ줫򿴤ޤ

  ơ֥ȤŰǼ̻ҤϤȤ򤱤
  ̻ҤˤϾʸȤ
  ǻȤȤŰǼ̻ҤϤ



                              ܸ˴ؤ

5.1)ܸ줬ޤʤΤϤʤǤ

createdb -Eޥɥץ UTF8 뤤 EUC_JP Υ󥳡ǥ󥰤ꤷ
ƥǡ١Τ褦˥󥳡ǥ󥰤ꤷƥǡ١
Ƥ

        CREATE DATABASE dbname WITH ENCODING 'UTF8';
    ⤷ϡ
        CREATE DATABASE dbname WITH ENCODING 'EUC_JP';

5.2) psql Windows饢Ȥˡܸ줬ʸΤǤ

psqlǥ饤ȤΥ󥳡ǥ󥰤ꤷƤ

        SET client_encoding TO 'SJIS'

PostgreSQLǡ١Υ󥳡ǥ󥰤˻Ȥܸʸɤ EUC_JP 
UTF-8(UNICODE) Ǥ뤿ᡢShift-JISɽΥޥɥץץȤϡ
client_encodingꤷƤʤȡܸɽݤʸޤ



ܸǤˤĤơ

[
  ܸǤˤĤƤϰʲ̤Ǥ

  ǽ:   2007ǯ0425
  :       ¼  (Jun Kuwamura <juk at PostgreSQL.jp>)

  FAQκˤ궨Ϥ򤷤Ƥä(ɾΤάƤޤ):

                 ̭(Minoru TANAKA <Tanaka.Minoru at keiken.co.jp>)
                а ã(Tatsuo ISHII <ishii at sraoss.co.jp>)
                ƣ ο(Tomohito SAITOH <tomos at elelab.nsc.co.jp>)
                Ͼ  ȥ(Hajime BABA <baba at kusastro.kyoto-u.ac.jp>)
                 칬(Kazuyuki OKAMOTO <kaz-okamoto at hitachi-system.co.jp>)
                 (Shoichi Kosuge <s-kosuge at str.hitachi.co.jp>)
                 Ƿ(Yoshiyuki YAMASHITA <dica at eurus.dti.ne.jp>)
                 Ϻ(Sintaro SAKAI <s_sakai at mxn.mesh.ne.jp>)
                 (Masami OGOSHI <ogochan at zetabits.com>)
                 ӹ(Toshiyuki ISHIKAWA <tosiyuki at gol.com>)
                 й(Shigehiro HONDA <fwif0083 at mb.infoweb.ne.jp>)
                 (Jun SESE <sesejun at linet.gr.jp>)
                ë ѹ(Hidetaka KAMIYA <hkamiya at catvmics.ne.jp>)
                 (Atsushi SUGAWARA <asugawar at f3.dion.ne.jp>)
                 (Kaori Inaba <i-kaori at sra.co.jp>)

  Ϥᡢݥȥ쥹˴ؤ˭٤ܸPostgreSQL᡼󥰥ꥹȡ
  ΤääƤ줿ꡢĤå򤷤Ƥ
   JF(Linux Japanese FAQ)ץȡFreeBSD ɥơץ
  줫顢ľܤ뤤ϴŪˤäƤ뤹٤ƤΥץ󥽡
  ߥ˥ƥΤߤʤޤ˴դޤ


  ʸ ܲ "Frequently Asked Questions"  Υڡ "Japanese FAQ"
  ȤܤǤޤ

  ޤǿǤϰʲΥȤˤޤ
        http://www.PostgreSQL.jp/wg/jpugdoc/ JPUGʸ񡦽ҴϢʬʲ
        http://www.linux.or.jp/JF/JFdocs/INDEX-database.html Linux JFץȡ
        http://www.linet.gr.jp/~juk/pgsql/ PostgreSQL Notes for Japaneseסԥڡ

  ʤ˴ؤ뤴ո(juk at PostgreSQL.jp)ޤǤ󤻤
  ʢ ᡼륢ɥ쥹 " at " ŬڤľƤȾѤ "@" Ǥ
]
by shigehiro honda — last modified 2007-05-04 03:42
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