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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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<head>
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<meta name="Keywords" lang="en" content="Ruby PostgreSQL">
<link rev="made" href="mailto:noborus@netlab.jp">
<link rel="contents" href="./index.html">
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<title>Postgres reference</title>
</head>
<body>
<div class = "language">
[<a href="postgres.html">English</a> | Japanese]
</div>
<h1><a name="reference">Postgres reference</a></h1>
<div class = "lastmodifed">
Last update: Mon, 5 Mar 2001 00:34:55 +0900
</div>
<hr>
<div>
<h2><a name="PGconn">PGconn</a></h2>
<p>
PostgreSQL$B$K%"%/%;%9$9$k$?$a$N%/%i%9!#$=$NB>$N%a%=%C%I$O(Blibpq$B$H$[$\F1$8%$%s%?%U%'!<%9$GDs6!$5$l$^$9!#(B
</p>
<p>
$BNc$($P!"(Blocalhost $B>e$N(B PostgreSQL $B$K@\B3$7!"(Bquery $B$r=P$9$?$a$K$O0J2<$N$h$&$K$7$F9T$$$^$9!#(B
</p>
<pre>
require "postgres"
conn = PGconn.connect("localhost", 5432, "", "", "test1")
res = conn.exec("select * from a;")
</pre>
<h3>$B%9!<%P!<%/%i%9(B:</h3>
<code>Object</code>
<h3>$B%/%i%9%a%=%C%I(B:</h3>
<p>
<a name="PGconn.connect"><code>connect(<var>pghost</var>,
<var>pgport</var>, <var>pgoptions</var>,
<var>pgtty</var>, <var>dbname</var>, <var>login</var>,
<var>passwd</var>)</code></a>
<a name="PGconn.new"><code>new(<var>pghost</var>,
<var>pgport</var>, <var>pgoptions</var>,
<var>pgtty</var>, <var>dbname</var>, <var>login</var>,
<var>passwd</var>)</code></a>
</p>
<dl>
<dt>PostgreSQL$B%5!<%P$H@\B3$7$^$9!#%*%W%7%g%s$N0UL#$O0J2<$NDL$j$G$9!#(B</dt>
<dd><var>pghost</var> : $B%5!<%P$N%[%9%HL>(B($BJ8;zNs(B)
<dd><var>pgport</var> : $B%5!<%P$,(Blisten$B$7$F$$$k%]!<%HHV9f(B($B@0?t(B)
<dd><var>pgoptions</var> : backend$B$r5/F0$9$k:]$N%*%W%7%g%s(B($BJ8;zNs(B)
<dd><var>pgtty</var> : backend$B$,%G%P%C%0%a%C%;!<%8$rI=<($9$k(Btty($BJ8;zNs(B)
<dd><var>dbname</var> : $B@\B3$9$k%G!<%?%Y!<%9L>(B($BJ8;zNs(B)
<dd><var>login</var> : $B%f!<%6L>(B($BJ8;zNs(B)
<dd><var>dbname</var> : $B%Q%9%o!<%I(B($BJ8;zNs(B)
</dl>
<p>$B<:GT$7$?>l9g$O(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#(B</p>
<h3>methods:</h3>
<dl>
<dt><a name="db"><code>db</code></a>
<dd>$B@\B3$7$?%G!<%?%Y!<%9L>$rJV$7$^$9!#(B
<dt><a name="host"><code>host</code></a>
<dd>$B@\B3$7$?%5!<%PL>$rJV$7$^$9!#(B
<dt><a name="user"><code>user</code></a>
<dd>$B%5!<%P$X@\B3;~$KG'>Z$7$?%f!<%6L>$rJV$7$^$9!#(B
<dt><a name="options"><code>options</code></a>
<dd>backend$B$r5/F0$9$k:]$K;XDj$7$?(Boption$B$rJV$7$^$9!#(B
<dt><a name="port"><code>port</code></a>
<dd>$B%5!<%P$X@\B3$9$k:]$K;HMQ$7$?%]!<%HHV9f$rJV$7$^$9!#(B
<dt><a name="tty"><code>tty</code></a>
<dd>$B@\B3$7$F$$$k(Bpgtty$B$rJV$7$^$9!#(B
<dt><a name="error"><code>error</code></a>
<dd>$B@\B3$K4X$9$k%(%i!<%a%C%;!<%8$rJV$7$^$9!#(B
<dt> <a name="finish"><code>finish</code></a>
<dt> <a name="close"><code>close</code></a>
<dd>$B%P%C%/%(%s%I$H$N@\B3$r=*N;$7$^$9!#(B
<dt><a name="reset"><code>reset</code></a>
<dd>$B%P%C%/%(%s%I$H$NDL?.%]!<%H$r%j%;%C%H$7$^$9!#$3$N4X?t$O%P%C%/%(%s%I$H$N%=%1%C%H@\B3$r=*N;$7!"$$$:$l$+$N%P%C%/%(%s%I$H$N?7$7$$@\B3$N:F3NN)$r;n$_$^$9!#(B
<dt><a name="trace"><code>trace(<var>port</var>)</code></a>
<dd>$B%P%C%/%(%s%I$H$N%a%C%;!<%8$N<uEO$7$N%H%l!<%9$rM-8z$K$7$^$9!#%a%C%;!<%8$O(B<var>port</var>$B$G;XDj$5$l$?(B File $B%/%i%9$N%$%s%9%?%s%9$X=q$-=P$5$l$^$9!#(B
<dt><a name="untrace"><code>untrace</code></a>
<dd>$B%P%C%/%(%s%I$H$N%a%C%;!<%8$N<uEO$7$N%H%l!<%9$rL58z$K$7$^$9!#(B
<dt><a name="exec"><code>exec(<var>sql</var>)</code></a>
<dd><var>sql</var>$B$G;XDj$5$l$?(BSQL$BLd$$9g$o$;J8$r(BPostgreSQL$B$XAw$j$^$9!#(B
$BLd$$9g$o$;$,@.8y$7$?>l9g$K$O!"7k2L$,(B<a href="#PGresult">PGresult</a>$B%/%i%9$N(B
$B%$%s%9%?%s%9$H$7$FJV$5$l!"$=$&$G$J$$>l9g$ONc30$,H/@8$7$^$9!#(B
<dt><a name="query"><code>query(<var>sql</var>)</code></a>
<dd><var>sql</var>$B$G;XDj$5$l$?(BSQL$BLd$$9g$o$;J8$r(BPostgreSQL$B$XAw$j$^$9!#(B
$BLd$$9g$o$;$,@.8y$7$?>l9g$K$O!"7k2L$,(B Array $B%/%i%9$N(B
$B%$%s%9%?%s%9$H$7$FJV$5$l!"$=$&$G$J$$>l9g$O(B nil $B$,JV$5$l$^$9!#(B
<dt><a name="async_exec"><code>async_exec(<var>sql</var>)</code></a>
<dd><var>sql</var>$B$G;XDj$5$l$?(BSQL$BLd$$9g$o$;J8$r(BPostgreSQL$B$X(B
$BHsF14|$G(B $BAw$j$^$9!#Ld$$9g$o$;$,@.8y$7$?>l9g$K$O!"(B
$B7k2L$,(B<a href="#PGresult">PGresult</a>$B%/%i%9$N(B
$B%$%s%9%?%s%9$H$7$FJV$5$l!"$=$&$G$J$$>l9g$ONc30$,H/@8$7$^$9!#(B
<dt><a name="async_query"><code>async_query(<var>sql</var>)</code></a>
<dd><var>sql</var>$B$G;XDj$5$l$?(BSQL$BLd$$9g$o$;J8$r(BPostgreSQL$B$X(B
$BHsF14|$G(B $BAw$j$^$9!#Ld$$9g$o$;$,@.8y$7$?>l9g$K$O!"7k2L$,(B Array $B%/%i%9$N(B
$B%$%s%9%?%s%9$H$7$FJV$5$l!"$=$&$G$J$$>l9g$O(B nil $B$,JV$5$l$^$9!#(B
<dt><a name="get_notify"><code>get_notify</code></a>
<dd>$B%P%C%/%(%s%I$+$iL$=hM}$NDLCN%j%9%H$rF@$F!"(BArray $B%/%i%9$N%$%s%9%?%s%9$H$7$FJV$7$^$9!#%P%C%/%(%s%I$+$i$NL$=hM}$NDLCN$,$J$$>l9g$K$O!"(Bnil $B$,JV$5$l$^$9!#(B
<dt><a name="insert_table"><code>insert_table(<var>table</var>,
<var>array</var>)</code></a>
<dd><var>table</var>$B$G;XDj$5$l$?%F!<%V%k$KBP$7!"(B<var>array</var>$B$NFbMF$rA^F~$7$^$9!#(B<var>array</var>$B$O(B Array $B%/%i%9$N%$%s%9%?%s%9$G$J$1$l$P$J$j$^$;$s!#(B
<dt><a name="getline"><code>getline</code></a>
<dd>$B%P%C%/%(%s%I%5!<%P$+$i2~9T%3!<%I$G=*$k9T$rFI$_<h$j$^$9!#(B<code>fgets(3)</code>$B$HF1MM$K!"$3$N%a%=%C%I$O(B<code>get(3)</code>$B$HF1MM$K=*C<9T$r%L%k$KJQ49$7$^$9!#(Bgetline$B$O(BEOF$B$N>l9g$O!"(Bnil $B$r!"9TA4BN$rFI$_<h$C$?>l9g$O(B0$B$r!"$^$@2~9T%3!<%I$rFI$_<h$C$F$$$J$$>l9g$O(B1$B$rJV$7$^$9!#$3$N%a%=%C%I$r;HMQ$9$k;~$NCm0UE@$O!"%P%C%/%(%s%I%5!<%P$,7k2L$NAw?.$r40N;$7$?$3$H$r<($9C10lJ8;z(B"."$B$r?75,9T$KAw?.$7$?$3$H$r3NG'$7$J$1$l$P$J$i$J$$$3$H$G$9!#(B<br>
$B%5%s%W%k%3!<%I(B<a href="../sample/psql.rb">psql.rb</a>$B$O!"(Bcopy$B%W%m%H%3%k$r@5$7$/07$&%=!<%9$r4^$s$G$$$^$9!#(B
<dt><a name="putline"><code>putline(<var>string</var>)</code></a>
<dd><var>string</var>$B$G;XDj$5$l$?J8;zNs$r%P%C%/%(%s%I!<%5!<%P$XAw?.$7$^$9!#;HMQ<T$O%G!<%?$NAw?.$,40N;$7$?$3$H$r%P%C%/%(%s%I$K<($9$?$a$K!"C10lJ8;z(B"."$B$rL@<(E*$KAw?.$7$J$1$l$P$J$j$^$;$s!#(B
<dt><a name="endcopy"><code>endcopy</code></a>
<dd>$B%P%C%/%(%s%I$HF14|$r$H$j$^$9!#$3$N%a%=%C%I$O%P%C%/%(%s%I$,(Bcopy$B$r40N;$9$k$^$GBT$A$^$9!#(B<a href="#putline">putline</a>$B$d(B<a href="#getline">getline</a>$B$r;HMQ$7$?>l9g$K;HMQ$9$Y$-%a%=%C%I$G$9!#(Bcopy$B$,$&$^$/40N;$7$?>l9g$K$O(B nil $B$,JV$j!"$=$&$G$J$$>l9g$ONc30$,H/@8$7$^$9!#(B
<dt><a name="set_client_encoding"><code>set_client_encoding</code></a>
<dd>$B%/%i%$%"%s%H$NJ8;z%3!<%I$r;XDj$7$^$9(B($BJ8;zNs(B)$B!#(B
<dt><a name="client_encoding"><code>client_encoding</code></a>
<dd>$B%/%i%$%"%s%H$NJ8;z%3!<%I$rJV$7$^$9(B($BJ8;zNs(B)$B!#(B
<dt><a name="lo_import"><code>lo_import(<var>file</var>)</code></a>
<dd><var>file</var>$B$r%i!<%8%*%V%8%'%/%H$K%$%s%]!<%H$7$^$9!#@.8y$9$k$H(B<a href="#PGlarge">PGlarge</a>$B%/%i%9$N%$%s%9%?%s%9$,JV$5$l$^$9!#<:GT$9$k$H(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#(B
<dt><a name="lo_export"><code>lo_export(<var>oid</var>, <var>file</var>)</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$r(B <var>file</var> $B$KJ]B8$7$^$9!#(B
<dt><a name="lo_create"><code>lo_create([<var>mode</var>])</code></a>
<dd>$B?7$7$/%i!<%8%*%V%8%'%/%H$r$D$/$j$^$9!#@.8y$9$k$H(B<a href="#PGlarge">PGlarge</a> $B%/%i%9$N%$%s%9%?%s%9$,JV$5$l$^$9!#<:GT$9$k$H(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#(B
<dt><a name="lo_open"><code>lo_open(<var>oid</var>, [<var>mode</var>])</code></a>
<dd>oid $B$N%i!<%8%*%V%8%'%/%H$r3+$-$^$9!#@.8y$9$k$H(B<a href="#PGlarge">PGlarge</a> $B%/%i%9$N%$%s%9%?%s%9$,JV$5$l$^$9!#<:GT$9$k$H(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#(B<var>"INV_READ"</var>,<var>"INV_WRITE"</var>$B$N$I$A$i$+$N%b!<%I$r;XDj$7$^$9!#<:GT$9$k$H(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#%b!<%I$r>JN,$7$?>l9g$O(B<var>"INV_READ"</var>$B$G$9!#(B
<dt><a name="lo_unlink"><code>lo_unlink(<var>oid</var>)</code></a>
<dd><var>oid</var>$B$N%i!<%8%*%V%8%'%/%H$r:o=|$7$^$9!#(B
</dl>
</div>
<hr>
<div>
<h2><a name="PGresult">PGresult</a></h2>
<P>
Query$B$N7k2L$H$7$FF@$i$l$?%?%C%W%k$r(Bwrap$B$9$k%/%i%9!%$3$N%/%i%9(B
$B$N%$%s%9%?%s%9$O!"(Bquery$B$r9T$&$?$S$K@8@.$5$l$^$9!#8N$KF@$i$l$?(B
$B7k2L$,ITMW$K$J$C$?>l9g$K$O!"(Bclear$B$r8F$S=P$7$F%a%b%j$r2rJ|$9$k(B
$B$h$&$K$7$F2<$5$$!#(B
</P>
<h3>$B%9!<%Q!<%/%i%9(B:</h3>
<p>
<code>Object</code>
</p>
<h2>$B%a%=%C%I(B:</h2>
<dl>
<dt><a name="status"><code>status</code></a>
<dd><dl>
<dt>$BLd$$9g$o$;7k2L$N%9%F!<%?%9$rJV$7$^$9!#%9%F!<%?%9$O0J2<$NCM$N$&$A$N$$$:$l$+0l$D$rJV$7$^$9!#(B
<dd>EMPTY_QUERY
<dd>COMMAND_OK
<dd>TUPLES_OK
<dd>COPY_OUT
<dd>COPY_IN
</dl>
<dt><a name="result"><code>result</code></a>
<dd>$BLd$$9g$o$;7k2L$N%?%C%W%k(B($B%$%s%9%?%s%9(B)$B$r!"G[Ns$GJV$7$^$9!#(B
<dt><a name="fields"><code>fields</code></a>
<dd>$BLd$$9g$o$;$N7k2L$N%U%#!<%k%I(B($BB0@-(B)$B$r!"G[Ns$GJV$7$^$9!#(B
<dt><a name="num_tuples"><code>num_tuples</code></a>
<dd>$BLd$$9g$o$;7k2L$N%?%C%W%k(B($B%$%s%9%?%s%9(B)$B$N?t$rJV$7$^$9!#(B
<dt><a name="num_fields"><code>num_fields</code></a>
<dd>$BLd$$9g$o$;$N7k2L$N%U%#!<%k%I(B($BB0@-(B)$B$N?t$rJV$7$^$9!#(B
<dt><a name="fieldname"><code>fieldname(<var>index</var>)</code></a>
<dd>$BM?$($i$l$?%U%#!<%k%I(B($BB0@-(B)$B$N:w0z(B(field index)$B$KBP1~$9$k%U%#!<%k%I(B($BB0@-(B)$B$NL>A0$rJV$7$^$9!#%U%#!<%k%I!&%$%s%G%#%1!<%?$O(B0$B$+$i3+;O$5$l$^$9!#(B
<dt><a name="fieldnum"><code>fieldnum(<var>name</var>)</code></a>
<dd>$BM?$($i$l$?%U%#!<%k%I(B($BB0@-(B)$B$NL>A0$KBP1~$9$k!"%U%#!<%k%I(B($BB0@-(B)$B$N:w0z$rJV$7$^$9!#(B
<dt><a name="type"><code>type(<var>index</var>)</code></a>
<dd>$BM?$($i$l$?%U%#!<%k%I(B($BB0@-(B)$B$KBP1~$9$k%U%#!<%k%I$N7?$rJV$7$^$9!#FbIt%3!<%G%#%s%0$5$l$F$$$k7?$,@0?t$GJV$5$l$^$9!#%U%#!<%k%I!&%$%s%G%#%1!<%?$O(B0$B$+$i3+;O$5$l$^$9!#(B
<dt><a name="size"><code>size(<var>index</var>)</code></a>
<dd>$BM?$($i$l$?%U%#!<%k%I(B($BB0@-(B)$B$KBP1~$9$k%U%#!<%k%I$N%5%$%:$r%P%$%H?t$GJV$7$^$9!#JV$5$l$k%5%$%:$,(B-1$B$N>l9g!"%U%#!<%k%I$O2DJQD9$G$9!#%U%#!<%k%I!&%$%s%G%#%1!<%?$O(B0$B$+$i3+;O$5$l$^$9!#(B
<dt><a name="getvalue"><code>getvalue(<var>tup_num, field_num</var>)
</code></a>
<dd>$B%U%#!<%k%I(B($BB0@-(B)$B$NCM$rJV$7$^$9!#$[$H$s$I$NLd$$9g$o$;$KBP$7$F!"(B<a href="#getvalue">getvalue</a>$B$K$h$C$FJV$5$l$kCM$O!"%L%k$G=*$o$k(BASCII$BJ8;zNs$GI=8=$5$l$^$9!#Ld$$9g$o$;$N7k2L$,%P%$%J%j%+!<%=%k$G$"$C$?>l9g!"(B<a href="#getvalue">getvalue</a>$B$K$h$C$FJV$5$l$kCM$O!"%P%C%/%(%s%I!&%5!<%P$NFbIt%U%)!<%^%C%H$K0MB8$7$?%P%$%J%j$GI=8=$5$l$^$9!#%G!<%?$r@5$7$$%?%$%W$K%-%c%9%H$7$?$j!"JQ49$7$?$j$9$k$N$O%W%m%0%i%^$N@UG$$G$9!#(B<a href="#PGresult">PGresult</a>$B$N%$%s%9%?%s%9$O(Bquery$B$N$?$S$K@8@.$5$l$^$9!#ITMW$K$J$C$?>l9g$O!"%W%m%0%i%^$,@UG$$r$b$C$F(B<a href="#clear">clear</a>$B$r8F$S=P$7%a%b%j$r2rJ|$7$F2<$5$$!#(B
<dt><a name="getlength"><code>getlength(<var>tup_num, field_num</var>)
</code></a>
<dd>$B%U%#!<%k%I(B($BB0@-(B)$B$ND9$5$r%P%$%H$GJV$7$^$9!#(B
<dt><a name="cmdstatus"><code>cmdstatus</code></a>
<dd>$B:G8e$NLd$$9g$o$;%3%^%s%I$N%3%^%s%I%9%F!<%?%9$rJ8;zNs$GJV$7$^$9!#(B
<dt><a name="clear"><code>clear</code></a>
<dd>$BLd$$9g$o$;$N7k2L@8@.$5$l$?(B<a href="#PGresult">PGresult</a>$B$N%$%s%9%?%s%9$r%/%j%"$7$^$9!#(B
</dl>
</div>
<hr>
<div>
<h2><a name="PGlarge">PGlarge</a></h2>
<p>
$B%i!<%8%*%V%8%'%/%H$K%"%/%;%9$9$k$?$a$N%/%i%9!#$3$N%*%V%8%'%/%H$O(B <a href="lo_import">lo_import</a>, <a href="lo_create">lo_create</a>, <a href="lo_open">lo_open</a> $B$N7k2L$H$7$FJV$5$l$^$9!#(B
</p>
<h3>super class:</h3>
<p>
<code>Object</code>
</p>
<h2>methods:</h2>
<dl>
<dt><a name="open"><code>open([<var>mode</var>])</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$r3+$-$^$9!#(B <var>"INV_READ"</var>,<var>"INV_WRITE"</var>$B$N$I$A$i$+$N%b!<%I$r;XDj$7$^$9!#<:GT$9$k$H(B <code>PGError</code> $BNc30$,H/@8$7$^$9!#%b!<%I$r>JN,$7$?>l9g$O(B<var>"INV_READ"</var>$B$G$9!#(B
<dt><a name="close"><code>close</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$rJD$8$^$9!#0J9_$3$N%*%V%8%'%/%H$KBP$9$k%"%/%;%9$ONc30$rH/@8$7$^$9!#(B
<dt><a name="read"><code>read([<var>length</var>])</code></a>
<dd><var>length</var> $B%P%$%HFI$_9~$s$G$=$NJ8;zNs$rJV$7$^$9!#(B<var>length</var> $B$,>JN,$5$l$?;~$K$O!"A4$F$N%G!<%?$rFI$_9~$_$^$9!#(B
<dt><a name="write"><code>write(<var>str</var>)</code></a>
<dd><var>str</var>$B$r%i!<%8%*%V%8%'%/%H$K=q$-9~$_$^$9!#=q$-9~$s$@%P%$%H?t$rJV$7$^$9!#(B
<dt><a name="seek"><code>seek(<var>offset</var>, <var>whence</var>)</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$N%]%$%s%?$r(B <var>offset</var> $B0\F0$7$^$9!#(B<var>whence</var> $B$O(B SEEK_SET, SEEK_CUR, and SEEK_END $B$,;XDj$G$-$^$9!#$=$l$>$l(B 0,1,2$B$H?t;z$G;XDj$7$F$b9=$$$^$;$s!#(B
<dt><a name="tell"><code>tell</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$N%]%$%s%?$N8=:_$N0LCV$rJV$7$^$9!#(B
<dt><a name="unlink"><code>unlink</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$r:o=|$7$^$9!#(B
<dt><a name="oid"><code>oid</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$N(B oid $B$rJV$7$^$9!#(B
<dt><a name="size"><code>size</code></a>
<dd>$B%i!<%8%*%V%8%'%/%H$N%5%$%:$rJV$7$^$9!#(B
<dt><a name="export"><code>export(<var>file</var>)</code></a>
<dd><var>file</var>$B$K%i!<%8%*%V%8%'%/%H$r=q$-=P$7$^$9!#(B
</dl>
</div>
<hr>
<address>
mailto:
<a href="mailto:noborus@netlab.jp">Noboru Saitou</a>
</address>
</body>
</html>
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