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<h1>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣨FAQ<41><51></h1>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD>2003 <20><> 01 <20><> 06 <20><> <20><><EFBFBD><EFBFBD>һ 22:27:35 CST
<p>Ŀǰά<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD>Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br />
<20><><EFBFBD>İ<EFBFBD>ά<EFBFBD><CEAC><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>ΰƽ <20><>laser@pgsqldb.com <20><></p>
<p><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>°汾<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><a href="http://www.postgresql.org/files/documentation/faqs/FAQ.html">http://www.postgresql.org/files/documentation/faqs/FAQ.html</a> <20><EFBFBD><E9BFB4></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳƽ̨<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><a href="http://www.postgresql.org/docs/faq/">http://www.postgresql.org/docs/faq/</a><EFBFBD><EFBFBD><EFBFBD>ش<EFBFBD><EFBFBD><EFBFBD><br />
</p>
<hr />
<center>
<h2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<a href="#1.1">1.1</a>) PostgreSQL <20><>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#1.2">1.2</a>) PostgreSQL <20>İ<EFBFBD>Ȩ<EFBFBD><C8A8>ʲô? <br />
<a href="#1.3">1.3</a>) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô Unix ƽ̨<C6BD>ϣ<EFBFBD> <br />
<a href="#1.4">1.4</a>) <20><><EFBFBD>õķ<C3B5> Unix ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9> <br />
<a href="#1.5">1.5</a>) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5> PostgreSQL<51><4C> <br />
<a href="#1.6">1.6</a>) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5><C3B5><EFBFBD> PostgreSQL <20><>֧<EFBFBD>֣<EFBFBD> <br />
<a href="#1.7">1.7</a>) PostgreSQL <20><><EFBFBD>µİ汾<C4B0><E6B1BE>ʲô<CAB2><C3B4> <br />
<a href="#1.8">1.8</a>) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>õ<EFBFBD> PostgreSQL <20><><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD> <br />
<a href="#1.9">1.9</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD><EFBFBD>֪<EFBFBD><D6AA> BUG <20><>ȱʧ<C8B1><CAA7><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD> <br />
<a href="#1.10">1.10</a>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ SQL <20><> <br />
<a href="#1.11">1.11</a>) PostgreSQL <20><> Y2K <20><><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#1.12">1.12</a>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EBBFAA><EFBFBD><EFBFBD><EFBFBD><br />
<a href="#1.13">1.13</a>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<E1BDBB><D2BB> BUG <20><><EFBFBD><br />
<a href="#1.14">1.14</a>) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DBMS <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD><br />
<a href="#1.15">1.15</a>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><>
<center>
<h2><EFBFBD>û<EFBFBD><EFBFBD>ͻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<a href="#2.1">2.1</a>) <20><> PostgreSQL <20><> ODBC <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4> <br />
<a href="#2.2">2.2</a>) <20><>ʲô<CAB2><C3B4><EFBFBD>߿<EFBFBD><DFBF>԰<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD> Web ҳ<><br />
<a href="#2.3">2.3</a>) PostgreSQL ӵ<><D3B5>ͼ<EFBFBD><CDBC><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#2.4">2.4</a>) <20><><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>Ժ<EFBFBD> PostgreSQL <20>򽻵<EFBFBD><F2BDBBB5><EFBFBD>
<center>
<h2>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<a href="#3.1">3.1</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD> PostgreSQL װ<><D7B0> /usr/local/pgsql <20><><EFBFBD><EFBFBD><EFBFBD>ĵط<C4B5><D8B7><EFBFBD> <br />
<a href="#3.2">3.2</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>Bad System Call</i><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Core Dumped <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> <br />
<a href="#3.3">3.3</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>IpcMemoryCreate</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> <br />
<a href="#3.4">3.4</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>IpcSemaphoreCreate</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> <br />
<a href="#3.5">3.5</a>) <20><><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD> <br />
<a href="#3.6">3.6</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ø<EFBFBD><C3B8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܣ<EFBFBD> <br />
<a href="#3.7">3.7</a>) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD> <br />
<a href="#3.8">3.8</a>) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ӵ<EFBFBD>¼ʱ<C2BC>յ<EFBFBD><D5B5><EFBFBD>Sorry, too many clients<74><73> <20><>Ϣ<EFBFBD><CFA2><br />
<a href="#3.9">3.9</a>) pgsql_tmp Ŀ¼<C4BF><EFBFBD><EFB6BC>Щʲô<CAB2><C3B4><br />
<a href="#3.10">3.10</a>) ΪʲôҪ<C3B4><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>汾ʱ<E6B1BE><CAB1> dump <20><> restore <20><>
<center>
<h2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<a href="#4.1">4.1</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>α<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> <br />
<a href="#4.2">4.2</a>) <20><><EFBFBD><EFBFBD>ֻѡ<D6BB><D1A1>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>У<EFBFBD> <br />
<a href="#4.3">4.3</a>) <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>б<EFBFBD><D0B1><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i> <20><EFBFBD><EFBFB4><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#4.4">4.4</a>) <20><><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE>һ<EFBFBD>У<EFBFBD> <br />
<a href="#4.5">4.5</a>) һ<>У<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><DFB4>Ƕ<EFBFBD><C7B6>٣<EFBFBD> <br />
<a href="#4.6">4.6</a>) <20>һ<E6B4A2><D2BB><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5>ı<EFBFBD><C4B1>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ٴ<EFBFBD><D9B4>̿ռ<br />
<a href="#4.7">4.7</a>) <20><><EFBFBD>β鿴<CEB2><E9BFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>Լ<EFBFBD><D4BC>û<EFBFBD><C3BB>Ķ<EFBFBD><C4B6><br />
<a href="#4.8">4.8</a>) <20>ҵIJ<D2B5>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> <br />
<a href="#4.9">4.9</a>) <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2>ܿ<EFBFBD><DCBF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵIJ<D2B5>ѯ<EFBFBD>ģ<EFBFBD> <br />
<a href="#4.10">4.10</a>) R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> <br />
<a href="#4.11">4.11</a>) ʲô<CAB2>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>Genetic Query Optimization<6F><6E><EFBFBD><EFBFBD> <br />
<a href="#4.12">4.12</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ң<EFBFBD><D2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>Сд<D0A1>޹ز<DEB9><D8B2>ң<EFBFBD> <br />
<a href="#4.13">4.13</a>) <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֶ<EFBFBD><D6B6>Ƿ<EFBFBD>Ϊ NULL<4C><4C> <br />
<a href="#4.14">4.14</a>) <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ʲô<CAB2><C3B4>ͬ<EFBFBD><CDAC> <br />
<a href="#4.15.1">4.15.1</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD>/<2F>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> <br />
<a href="#4.15.2">4.15.2</a>) <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кŵ<D0BA>ֵ<EFBFBD><D6B5> <br />
<a href="#4.15.3">4.15.3</a>) ʹ<><CAB9> currval() <20><> nextval() <20><EFBFBD>º<EFBFBD><C2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>race condition<6F><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<a href="#4.15.4">4.15.4</a>) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><ECB3A3>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>أ<EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>ֶε<D6B6>ȡֵ<C8A1>д<EFBFBD><D0B4>ڼ<EFBFBD><DABC><EFBFBD><EFBFBD>أ<EFBFBD> <br />
<a href="#4.16">4.16</a>) ʲô<CAB2><C3B4> OID<49><44>ʲô<CAB2><C3B4> TID <20><> <br />
<a href="#4.17">4.17</a>) PostgreSQL ʹ<>õ<EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> <br />
<a href="#4.18">4.18</a>) Ϊʲô<CAB2><C3B4><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><i>ERROR: Memory exhausted in AllocSetAlloc()</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<a href="#4.19">4.19</a>) <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD> PostgreSQL <20>İ汾<C4B0><E6B1BE> <br />
<a href="#4.20">4.20</a>) Ϊʲô<CAB2>ҵĴ<D2B5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD><i>invalid large obj descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></i><EFBFBD><EFBFBD> <br />
<a href="#4.21">4.21</a>) <20><><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>һ<EFBFBD><D2BB>ȱʡֵ<CAA1>ǵ<EFBFBD>ǰʱ<C7B0><CAB1><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> <br />
<a href="#4.22">4.22</a>) Ϊʲôʹ<C3B4><CAB9> <tt>IN</tt> <20><><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF>ô<EFBFBD><C3B4><EFBFBD><EFBFBD> <br />
<a href="#4.23">4.23</a>) <20><><EFBFBD>ν<EFBFBD><CEBD><EFBFBD> outer join <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><br />
<a href="#4.24">4.24</a>) <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><E6BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF><br />
<a href="#4.25">4.25</a>) <20><><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6>л<EFBFBD><D0BB><EFBFBD><EFBFBD>У<EFBFBD><br />
<a href="#4.26">4.26</a>) Ϊʲô<CAB2><C3B4> PL/PgSQL <20><><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2>ܿɿ<DCBF><C9BF>ش<EFBFBD><D8B4><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><br />
<a href="#4.27">4.27</a>) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݸ<EFBFBD><DDB8><EFBFBD>ѡ<EFBFBD><br />
<a href="#4.28">4.28</a>) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>ѡ<EFBFBD>
<center>
<h2><EFBFBD><EFBFBD>չ PostgreSQL</h2>
</center>
<a href="#5.1">5.1</a>) <20><>д<EFBFBD><D0B4>һ<EFBFBD><D2BB><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><E5BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ϊʲô<CAB2><EFBFBD><E1B5BC> core dump<6D><70> <br />
<a href="#5.2">5.2</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD>һЩͦ<D0A9><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺͺ<CDBA><CDBA><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#5.3">5.3</a>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>¼<EFBFBD><C2BC> C <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <br />
<a href="#5.4">5.4</a>) <20><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD>һ<EFBFBD><D2BB>Դ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD>±<EFBFBD><C2B1><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>ı<br />
<hr />
<center>
<h2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<h4><a id="1.1" name="1.1"></a>1.1) PostgreSQL <20><>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
PostgreSQL <20><><EFBFBD><EFBFBD> <i>Post-Gres-Q-L</i> <i><EFBFBD><EFBFBD></i>
<p>PostgreSQL <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> DBMS <20><><EFBFBD>о<EFBFBD>ԭ<EFBFBD><D4AD> POSTGRES <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>ǿ<EFBFBD>档PostgreSQL <20>ڱ<EFBFBD><DAB1><EFBFBD> POSTGRES <20><>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD>ͺͷḻ<CDB7><E1B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵Ļ<CDB5><C4BB><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD> SQL <20>Ӽ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ԭ<EFBFBD>ȵ<EFBFBD> PostQuel <20><>ѯ<EFBFBD><D1AF><EFBFBD>ԡ<EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>ɵIJ<C9B5><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EBB6BC><EFBFBD>Ի<EFBFBD><D4BB>á<EFBFBD></p>
<p>PostgreSQL <20>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD>ɲμ<C9B2> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԱС<D4B1><D0A1><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD>Ŀǰ<C4BF><C7B0>Э<EFBFBD><D0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Marc G. Fournier <20><><a href="mailto:scrappy@postgreSQL.org">scrappy@postgreSQL.org</a> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><CEBC><EFBFBD><EFBFBD>μ<EFBFBD>1.6<EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD><EFBFBD></p>
<p>PostgreSQL 1.01 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Andrew Yu <20><> Jolly Chen<65><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>ֲ<EFBFBD><D6B2><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD>Ժ<EFBFBD><D4BA><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ס<EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ Postgres<65><73><EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD><DABC>ݴ<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3> Michael Stonebraker <20><><EFBFBD>ڵ<EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>о<EFBFBD><D0BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD><CDB1><EFBFBD>ְԱ<D6B0><D4B1><EFBFBD>ɵġ<C9B5></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Postgres<65><73><EFBFBD><EFBFBD> 1995 <20><EFBFBD><EAA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL <20><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָij<D6B8> Postgres95<39><35><EFBFBD><EFBFBD> 1996<39><36>ĩ<EFBFBD><C4A9><EFBFBD>Ÿ<EFBFBD><C5B8><EFBFBD>Ϊ PostgreSQL<51><4C></p>
<h4><a id="1.2" name="1.2"></a>1.2) PostgreSQL <20>İ<EFBFBD>Ȩ<EFBFBD><C8A8>ʲô?</h4>
PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>ȨԼ<C8A8><D4BC><EFBFBD><EFBFBD>
<p>PostgreSQL <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>ϵͳ</p>
<p><EFBFBD><EFBFBD>PostgreSQL Data Base Management System<65><6D></p>
<p><EFBFBD><EFBFBD><EFBFBD>ְ<EFBFBD>Ȩ<EFBFBD><EFBFBD>c<EFBFBD><EFBFBD>1996-2002<30><32>PostgreSQL ȫ<>򿪷<EFBFBD>С<EFBFBD><D0A1><br />
<20><><EFBFBD>ְ<EFBFBD>Ȩ<EFBFBD><C8A8>c<EFBFBD><63>1994-6 <20><><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD>Portions copyright (c) 1996-2002, PostgreSQL Global Development Group<br />
<20>Portions Copyright (c) 1994-6 Regents of the University of California<69><61></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>κ<EFBFBD>Ŀ<EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸ĺͷַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>κη<EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD></p>
<p><EFBFBD><EFBFBD>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.<2E><></p>
<p><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µĶ<EFBFBD><EFBFBD>κε<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>ֱ<EFBFBD>ӵģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>𻵣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD>ʧ<EFBFBD>Ŀ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱҲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˡ<EFBFBD></p>
<p><EFBFBD><EFBFBD>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.<2E><></p>
<p><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κα<EFBFBD>֤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ijһ<EFBFBD>ض<EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><EFBFBD>ڡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǡ<EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧû<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩά<EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>֣<EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸ĵķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD>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.<2E><><br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BSD <20><>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD>Դ<EFBFBD><D4B4>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>δ<EFBFBD><CEB4><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD>ơ<EFBFBD><C6A1><EFBFBD><EFBFBD><EFBFBD>ϲ<EFBFBD><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="1.3" name="1.3"></a>1.3) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô Unix ƽ̨<C6BD>ϣ<EFBFBD></h4>
<p>һ<EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD><EFBFBD> UNIX <20><><EFBFBD>ݵ<EFBFBD>ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD>ڰ<EFBFBD>װָ<D7B0><D6B8><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD><D0B3>˷<EFBFBD><CBB7><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD>Ե<EFBFBD>ƽ̨<C6BD><CCA8></p>
<h4><a id="1.4" name="1.4"></a>1.4) <20><><EFBFBD>õķ<C3B5> Unix ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9></h4>
<20>ͻ<EFBFBD><CDBB><EFBFBD>
<p><EFBFBD><EFBFBD> libpq C <20>⣬psql<71><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿںͿͻ<CDBF><CDBB><EFBFBD>Ӧ<EFBFBD>ó<EFBFBD><C3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿ<EFBFBD><C9BF><EFBFBD><EFBFBD><EFBFBD> MS Windows ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF>ܵġ<DCB5><C4A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><C2A3>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD> MS Windows <20><><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8> TCP/IP <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>ֵ<EFBFBD> Unix ƽ̨<C6BD>ϵķ<CFB5><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨѶ<CDA8><D1B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>а<EFBFBD><D0B0><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ļ<EFBFBD> win32.mak <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Win32 libpq <20><><EFBFBD><EFBFBD> psql <20><>PostgreSQL Ҳ<><D2B2><EFBFBD>Ժ<EFBFBD> ODBC <20>ͻ<EFBFBD><CDBB><EFBFBD>ͨѶ<CDA8><D1B6></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD> Cygwin <20><>Cygnus <20><> Unix/NT <20><>ֲ<EFBFBD><D6B2><EFBFBD><EFBFBD> Windows NT <20><> Win2k <20><><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><E6B1BE><EFBFBD><EFBFBD> See <i>pgsql/doc/FAQ_MSWIN</i> <20>ļ<EFBFBD><C4BC><EFBFBD> <a href="http://www.PostgreSQL.org/docs/faq-mswin.html">http://www.PostgreSQL.org/docs/faq-mswin.html</a> <20><></p>
<p><EFBFBD><EFBFBD>ֲ<EFBFBD><EFBFBD> MS Win NT/2000/XP <20>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><DABD>С<EFBFBD></p>
<h4><a id="1.5" name="1.5"></a>1.5) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5> PostgreSQL<51><4C></h4>
<p>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FTPվ<50><D5BE><EFBFBD><EFBFBD> <a href="ftp://ftp.PostgreSQL.org/pub">ftp://ftp.PostgreSQL.org/pub</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>վ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Բο<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>վ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><EFBFBD></p>
<h4><a id="1.6" name="1.6"></a>1.6) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5><C3B5><EFBFBD> PostgreSQL <20><>֧<EFBFBD>֣<EFBFBD></h4>
<p><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>б<EFBFBD><EFBFBD>ǣ<EFBFBD><a href="mailto:pgsql-general@postgreSQL.org">pgsql-general@postgreSQL.org</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>⡣Ҫ<E2A1A3><D2AA><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD>Ϊ</p>
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<20><><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD> <a href="mailto:pgsql-general-request@postgreSQL.org">pgsql-general-request@postgreSQL.org</a> <20><>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD>ȡժҪ<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><a href="mailto:pgsql-general-digest-request@postgreSQL.org">pgsql-general-digest-request@postgreSQL.org</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD></p>
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ÿ<><C3BF><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFB5BD>Լ 30k <20><><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>ժҪ<D5AA>ͷ<EFBFBD><CDB7>͸<EFBFBD><CDB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1>ij<EFBFBD>Ա<EFBFBD><D4B1>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Բμӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD> <a href="mailto:bugs-request@postgreSQL.org">bugs-request@postgreSQL.org</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD></p>
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<20><><EFBFBD><EFBFBD><EFBFBD>Բμӿ<CEBC><D3BF><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD> <a href="mailto:hackers-request@postgreSQL.org">hackers-request@postgreSQL.org</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>
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end
</pre>
<20><><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD> PostgreSQL <20>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><> WWW <20><>ҳ<EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD>
<blockquote>
<a href="http://postgresql.org/">http://postgresql.org/</a>
</blockquote>
<20><> EFNet <20><EFBFBD><EFBBB9>һ<EFBFBD><D2BB> IRC Ƶ<><C6B5><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5> #PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD> unix <20><><EFBFBD><EFBFBD><tt>irc -c '#PostgreSQL' "$USER" irc.phoenix.net</tt>
<p><EFBFBD><EFBFBD>ҵ֧<EFBFBD>ֹ<EFBFBD>˾<EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD> <a href="http://www.PostgreSQL.org/users-lounge/commercial-support.html">http://www.PostgreSQL.org/users-lounge/commercial-support.html</a> <20><></p>
<h4><a id="1.7" name="1.7"></a>1.7) PostgreSQL <20><><EFBFBD>µİ汾<C4B0><E6B1BE>ʲô<CAB2><C3B4></h4>
PostgreSQL <20><><EFBFBD>µİ汾<C4B0>ǰ汾 7.2.3<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.3.1 <20>ˡ<EFBFBD><CBA1><EFBFBD>
<p><EFBFBD><EFBFBD><EFBFBD>Ǽƻ<EFBFBD>ÿ<EFBFBD>ĸ<EFBFBD><EFBFBD>·<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="1.8" name="1.8"></a>1.8) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>õ<EFBFBD> PostgreSQL <20><><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD></h4>
<20>ڷ<EFBFBD><DAB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB>ֲᣬ<D6B2>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>һЩС<D0A9>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1>μ<EFBFBD> /doc Ŀ¼<C4BF><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2>ӦΪ $PGHOME/doc<6F><63><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD>ֲᣬ<D6B2><E1A3AC> <a href="http://www.PostgreSQL.org/users-lounge/docs/">http://www.PostgreSQL.org/users-lounge/docs/</a> <20><>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڠPostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E1B9A9><EFBFBD><EFBFBD> <a href="http://www.PostgreSQL.org/docs/awbook.html">http://www.PostgreSQL.org/docs/awbook.html</a> <20><> <a href="http://www.commandprompt.com/ppbook/">http://www.commandprompt.com/ppbook/</a> <20><><EFBFBD><EFBFBD> <a href="http://www.ca.PostgreSQL.org/books/">http://www.ca.PostgreSQL.org/books/</a> <20><><EFBFBD>й<EFBFBD><D0B9><EFBFBD> PostgreSQL <20>Ŀɹ<C4BF><C9B9><EFBFBD><E9BCAE><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD> <a href="http://techdocs.PostgreSQL.org/">http://techdocs.PostgreSQL.org/</a> <20><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD>й<EFBFBD> PostgreSQL <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD></p>
<p><i>psql</i> <20><>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> \d <20><><EFBFBD><EFBFBD><EEA3AC>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ۼ<EFBFBD><DBBC>ȵ<EFBFBD><C8B5><EFBFBD>Ϣ<EFBFBD><CFA2></p>
<p><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD> web վ<><D5BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD></p>
<h4><a id="1.9" name="1.9"></a>1.9) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD><EFBFBD>֪<EFBFBD><D6AA> BUG <20><>ȱʧ<C8B1><CAA7><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD></h4>
PostgreSQL ֧<><D6A7>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD> SQL-92 <20><><EFBFBD>Ӽ<EFBFBD><D3BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD> <a href="http://www.postgresql.org/docs/todo.html">TODO</a> <a href="http://www.postgresql.org/docs/todo.html"></a><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>֪<EFBFBD><EFBFBD><EFBFBD>棬ȱʧ<EFBFBD><EFBFBD><EFBFBD>Ժ<EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD>ƻ<EFBFBD><EFBFBD><EFBFBD>
<h4><a id="1.10" name="1.10"></a>1.10) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ SQL<51><4C></h4>
<20><> <a href="http://www.postgresql.org/docs/awbook.html">http://www.postgresql.org/docs/awbook.html</a> <20>Ĺ<EFBFBD><C4B9><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˡ<EFBFBD><CBA1><EFBFBD><EFBFBD><EFBFBD> <a href="http://www.commandprompt.com/ppbook/">http://www.commandprompt.com/ppbook</a> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><E9A1A3><a href="http://www.intermedia.net/support/sql/sqltut.shtm">http://www.intermedia.net/support/sql/sqltut.shtm</a><EFBFBD><EFBFBD><a href="http://ourworld.compuserve.com/homepages/graeme_birchall/HTM_COOK.HTM">http://ourworld.compuserve.com/homepages/graeme_birchall/HTM_COOK.HTM<54></a> <20><> <a href="http://sqlcourse.com/">http://sqlcourse.com</a> <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ž̡̳<CCB3>
<p><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> "Teach Yourself SQL in 21 Days, Second Edition"<22><>21<32><31>ѧ<EFBFBD><D1A7>SQL<51><4C><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD><E6A3A9><EFBFBD><EFBFBD> <a href="http://members.tripod.com/er4ebus/sql/index.htm">http://members.tripod.com/er4ebus/sql/index.htm</a></p>
<p><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>ϲ<EFBFBD><EFBFBD> <i>The Practical SQL Handbook, Bowman, Judith S., et al., Addison-Wesley <20><></i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>The Complete Reference SQL, Groff et al., McGraw-Hill <20><></i></p>
<h4><a id="1.11" name="1.11"></a>1.11) PostgreSQL <20><> Y2K <20><><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD></h4>
<20>ǣ<EFBFBD><C7A3><EFBFBD><EFBFBD>Ǻ<EFBFBD><C7BA><EFBFBD><EFBFBD>׿<EFBFBD><D7BF><EFBFBD> 2000 AD ֮<><D6AE><EFBFBD><EFBFBD> 2000 BC ֮ǰ<D6AE><C7B0><EFBFBD><EFBFBD><EFBFBD>ڡ<EFBFBD>
<h4><a id="1.12" name="1.12"></a>1.12) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EBBFAA><EFBFBD><EFBFBD><EFBFBD></h4>
<20><><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD> web վ<><D5BE><EFBFBD>򷢲<EFBFBD><F2B7A2B2><EFBFBD><EFBFBD>е<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD><CEA3><EFBFBD><EFBFBD><EFBFBD> pgsql-hackers <20><> pgsql-patches <20>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pgsql-patches <20><EFBFBD><E1BDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
<p><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʮ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL CVS <20><font size="-1">COMMIT</font> <20><>Ȩ<EFBFBD>ޡ<EFBFBD><DEA1><EFBFBD><EFBFBD>Ƕ<EFBFBD><C7B6>Ѿ<EFBFBD><D1BE><EFBFBD>˷dz<CBB7><C7B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD>˺<EFBFBD><CBBA>Ѹ<EFBFBD><D1B8>Ͻ<EFBFBD><CFBD><EFBFBD><E0A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><C7B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ġ<EFBFBD></p>
<h4><a id="1.13" name="1.13"></a>1.13) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<E1BDBB><D2BB>BUG<55><47><EFBFBD></h4>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <a href="http://www.PostgreSQL.org/bugs/bugs.php">http://www.PostgreSQL.org/bugs/bugs.php</a> <20><> PostgreSQL BugTool ҳ<><D2B3>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<E1BDBB><D2BB>BUG<55><47><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>ϡ<EFBFBD>
<p>ͬ<EFBFBD><EFBFBD>ҲҪ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD> ftp վ<><D5BE> <a href="ftp://ftp.postgresql.org/pub">ftp://ftp.postgreSQL.org/pub</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>и<EFBFBD><EFBFBD>µ<EFBFBD> PostgreSQL <20><EFBFBD>򲹶<EFBFBD><F2B2B9B6><EFBFBD></p>
<h4><a id="1.14" name="1.14"></a>1.14) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DBMS <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD></h4>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кü<D0BA><C3BC>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD>ܣ<EFBFBD><DCA3>ɿ<EFBFBD><C9BF>ԣ<EFBFBD>֧<EFBFBD>ֺͼ۸<CDBC><DBB8><EFBFBD>
<dl>
<dt><b><EFBFBD><EFBFBD><EFBFBD><EFBFBD></b></dt>
<dd>PostgreSQL ӵ<>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DBMS <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD><E7A3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ժ͸<D4BA><CDB8>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD>û<EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><CDA3>̳У<CCB3><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͷ<EFBFBD><CDB6><EFBFBD><E6B1BE><EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õȡ<C3B5><br />
<20></dd>
<dt><b><EFBFBD><EFBFBD><EFBFBD><EFBFBD></b></dt>
<dd>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>úͿ<C3BA>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>ܡ<EFBFBD><DCA1><EFBFBD>ijЩ<C4B3><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȽϿ죬<CFBF><ECA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD><C8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MySQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ϵͳ<CFB5>Ƚϣ<C8BD><CFA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> insert/update ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ MySQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><i><EFBFBD><EFBFBD><EFBFBD><EFBFBD></i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD>ԡ<EFBFBD><D4A1><EFBFBD><EFBFBD>ǵ<EFBFBD><C7B5><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD>ǿɿ<C7BF><C9BF>Ժ<EFBFBD><D4BA><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD>η<EFBFBD><CEB7><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ϵظĽ<D8B8><C4BD><EFBFBD><EFBFBD>ܡ<EFBFBD><DCA1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥ<EFBFBD><C8A4><EFBFBD><EFBFBD>ҳ<EFBFBD>Ƚ<EFBFBD><C8BD><EFBFBD> PostgreSQL <20><> MySQL <a href="http://openacs.org/why-not-mysql.html">http://openacs.org/why-not-mysql.html</a><EFBFBD><EFBFBD><br />
</dd>
<dt><b><EFBFBD>ɿ<EFBFBD><EFBFBD><EFBFBD></b></dt>
<dd><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֪<EFBFBD><EFBFBD> DBMS <20><><EFBFBD><EFBFBD><EFBFBD>ǿɿ<C7BF><C9BF>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ö<EFBFBD>û<EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD>Ŭ<EFBFBD><C5AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Եģ<D4B5><C4A3>ȶ<EFBFBD><C8B6>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٵĴ<D9B5><C4B4>롣ÿ<EBA1A3><C3BF><EFBFBD><EFBFBD><E6B1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>µ<EFBFBD> beta <20><><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵķ<C7B5><C4B7><EFBFBD><EFBFBD><EFBFBD>ʷ<EFBFBD><CAB7>ʾ<EFBFBD><CABE><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>ȶ<EFBFBD><C8B6>ģ<EFBFBD><C4A3>ι̵ģ<CCB5><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õİ汾<C4B0><E6B1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E2B7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ġ<EFBFBD><br />
<20></dd>
<dt><b>֧<EFBFBD><EFBFBD></b></dt>
<dd><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>б<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>԰<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><EFBFBD>ܱ<EFBFBD>֤<EFBFBD>϶<EFBFBD><EFBFBD>ܽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD>£<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DBMS Ҳ<><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><E1B9A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EBBFAA><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD>û<EFBFBD>Ⱥ<EFBFBD><C8BA><EFBFBD>ֲ<EFBFBD><D6B2><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>Ӵ<EFBFBD><D3B4><EFBFBD> PostgreSQL <20><>֧<EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD> DBMS <20><>Ҫ<EFBFBD>á<EFBFBD><C3A1><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9>ҵ<EFBFBD>Ե<EFBFBD>Ԥ<EFBFBD><D4A4>װ<EFBFBD><D7B0>֧<EFBFBD>֣<EFBFBD><D6A3><EFBFBD><EFBFBD>Ը<EFBFBD><D4B8><EFBFBD><E1B9A9><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>Ҫ<EFBFBD><D2AA><EFBFBD>ˡ<EFBFBD><CBA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><D6A7> FAQ <20><><EFBFBD><EFBFBD> 1.6 С<>ڡ<EFBFBD><DAA1><EFBFBD><br />
<20></dd>
<dt><b><EFBFBD>۸<EFBFBD></b></dt>
<dd><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD><EFBFBD>κ<EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>úͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD>ġ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Բ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD>Ʒ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵĴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BSD <20><><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>Ȩ<EFBFBD></dd>
</dl>
<h4><a id="1.15" name="1.15"></a>1.15) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><></h4>
<p><EFBFBD>Դ<EFBFBD>1996<EFBFBD>ʼ<EFBFBD><EFBFBD>PostgreSQL <20>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֯<EFBFBD><D6AF><EFBFBD><EFBFBD>ЩӦ<D0A9>ù鹦<C3B9><E9B9A6> Marc Fournier<65><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˲<EFBFBD><CBB2><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>һֱ<D2BB><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֯<EFBFBD><D6AF></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʩ<EFBFBD>Ƿdz<EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ġ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܷ<EFBFBD>ֹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD><EFBFBD><EFBFBD>Ŀǰ<EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD>ҡ<EFBFBD></p>
<p><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֯<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD>ɱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD>ά<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¶ȵġ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ԵĿ<EFBFBD>֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD>˾<EFBFBD>ܽ<EFBFBD><EFBFBD>о<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <a href="http://store.pgsql.com/shopping/">http://store.pgsql.com/shopping/</a> <20><><EFBFBD>о<EFBFBD><D0BE><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><>˾<EFBFBD><CBBE><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><D6A7> PostgreSQL <20><>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD>ض<EFBFBD><D8B6>Ĺ<EFBFBD>˾<EFBFBD><CBBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD>⣬Ҳ<E2A3AC><D2B2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>֧Ʊ<D6A7><C6B1><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5>ַ<EFBFBD><D6B7></p>
<hr />
<center>
<h2><EFBFBD>û<EFBFBD><EFBFBD>ͻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<h4><a id="2.1" name="2.1"></a>2.1) <20><> PostgreSQL <20><> ODBC <20><><EFBFBD><EFBFBD>ô<EFBFBD><C3B4></h4>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ODBC <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ã<EFBFBD>PsqlODBC <20><> OpenLink ODBC.
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><a href="http://gborg.postgresql.org/project/psqlodbc/projdisplay.php">http://gborg.postgresql.org/project/psqlodbc/projdisplay.php</a> <20><><EFBFBD><EFBFBD> PsqlODBC <20><></p>
<p>OpenLink ODBC <20><><EFBFBD>Դ<EFBFBD> <a href="http://www.openlinksw.com/">http://www.openlinksw.com/</a> <20><><EFBFBD>á<EFBFBD><C3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵı<C7B5>׼ ODBC <20>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>ֵĿͻ<C4BF><CDBB><EFBFBD>ƽ̨<C6BD><CCA8>Win, Mac, Unix, VMS<4D><53><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> PostgreSQL ODBC<42><43></p>
<p><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD>ܽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʒ<EFBFBD><EFBFBD><EFBFBD>۸<EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ҵ֧<EFBFBD>ֵ<EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD> freeware <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ汾<C4B0><E6B1BE><EFBFBD>Եõ<D4B5><C3B5><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF> <a href="mailto:postgres95@openlink.co.uk">postgres95@openlink.co.uk</a><EFBFBD><EFBFBD></p>
<h4><a id="2.2" name="2.2"></a>2.2) <20><>ʲô<CAB2><C3B4><EFBFBD>߿<EFBFBD><DFBF>԰<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD> Web ҳ<></h4>
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8>ͦ<EFBFBD><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD> վ<><D5BE><EFBFBD>ǣ<EFBFBD><a href="http://www.webreview.com">http://www.webreview.com</a> <20><>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Web <20><><EFBFBD>ɣ<EFBFBD>PHP <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>õĽӿڡ<D3BF><DAA1><EFBFBD><EFBFBD>ڣ<EFBFBD><a href="http://www.php.net/">http://www.php.net/</a> <20><></p>
<p><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD>ӵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>񣬺ܶ<EFBFBD><EFBFBD>˲<EFBFBD><EFBFBD><EFBFBD> Perl <20>ӿں<D3BF> CGI.pm <20><> mod_perl <20><></p>
<h4><a id="2.3" name="2.3"></a>2.3) PostgreSQL ӵ<><D3B5>ͼ<EFBFBD><CDBC><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<20>ǵġ<C7B5><C4A1>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><>ͼ<EFBFBD>νӿڡ<D3BF><DAA1><EFBFBD><EFBFBD><EFBFBD>PgAccess<73><73><a href="http://www.pgaccess.com">http://www.pgaccess.com</a>)<29><>PgAdmin II <20><><a href="http://www.pgadmin.org">http://www.pgadmin.org</a><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Win32<EFBFBD><EFBFBD><EFBFBD><EFBFBD> RHDB Admin (<a href="http://sources.redhat.com/rhdb/">http://sources.redhat.com/rhdb/</a><EFBFBD><EFBFBD> <20>Լ<EFBFBD> Rekall <20><><a href="http://www.thekompany.com/products/rekall/">http://www.thekompany.com/products/rekall/</a><EFBFBD><EFBFBD> ר<>е<EFBFBD>/proprietary)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PHPPgAdmin <20><><a href="http://phppgadmin.sourceforge.net/">http://phppgadmin.sourceforge.net/<2F><></a> <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> web <20><> PostgreSQL <20><><EFBFBD>ʽӿڡ<D3BF>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ PgAccess <20><><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3> <a href="http://www.pgaccess.org/">http://www.pgaccess.org/</a><EFBFBD><EFBFBD></p>
<h4><a id="2.4" name="2.4"></a>2.4) <20><><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>Ժ<EFBFBD> PostgreSQL <20>򽻵<EFBFBD><F2BDBBB5><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD>з<EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20>Ľӿڡ<D3BF><DAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ե<EFBFBD><D4B5><EFBFBD>չģ<D5B9><C4A3><EFBFBD>б<EFBFBD><D0B1><EFBFBD></p>
<p>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>а<EFBFBD><D0B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>½ӿڣ<D3BF></p>
<ul>
<li>C (libpq)</li>
<li>Embedded C (ecpg)</li>
<li>Java (jdbc)</li>
<li>Python (PyGreSQL)</li>
<li>TCL (libpgtcl)</li>
</ul>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľӿ<EFBFBD><EFBFBD><EFBFBD> <a href="http://gborg.postgresql.org">http://gborg.postgresql.org</a> <20>ϵ<EFBFBD> <i>Drivers/Interfaces</i> С<>ڡ<EFBFBD></p>
<hr />
<center>
<h2>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<h4><a id="3.1" name="3.1"></a>3.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD> PostgreSQL װ<><D7B0> /usr/local/pgsql <20><><EFBFBD><EFBFBD><EFBFBD>ĵط<C4B5><D8B7><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure ʱ<><CAB1><EFBFBD><EFBFBD> --prefix ѡ<></p>
<h4><a id="3.2" name="3.2"></a>3.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>Bad System Call</i><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Core Dumped <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǻܶ෽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>֧<EFBFBD><EFBFBD> System V <20><>չ<EFBFBD><D5B9>PostgreSQL <20><>Ҫ<EFBFBD>ں<EFBFBD>֧<EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>źŵơ<C5B5></p>
<h4><a id="3.3" name="3.3"></a>3.3) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>IpcMemoryCreate</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4></h4>
<20><>Ҫô<D2AA><C3B4>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><DABA><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD>ù<EFBFBD><C3B9><EFBFBD><EFBFBD>ڴ棬Ҫô<D2AA><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˵Ŀ<CBB5><C4BF>ù<EFBFBD><C3B9><EFBFBD><EFBFBD>ڴ档<DAB4><E6A1A3>Ҫ<EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ʱʹ<CAB1>õĻ<C3B5><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺ<EFBFBD><CDBA>˽<EFBFBD><CBBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3>ʹ<EFBFBD><CAB9>ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͽ<EFBFBD><CDBD><EFBFBD><EFBFBD><EFBFBD>Ŀʱ<C4BF><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ~1MB<4D><42><EFBFBD>йع<D0B9><D8B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>źŵƵ<C5B5><C6B5><EFBFBD>ϸ<EFBFBD><CFB8>Ϣ<EFBFBD><CFA2><EFBFBD>ο<EFBFBD> <a href="http://www.postgresql.org/idocs/index.php?kernel-resources.html">PostgreSQL Administrator's Guide</a> <20><>
<h4><a id="3.4" name="3.4"></a>3.4) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>IpcSemaphoreCreate</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD> <i>IpcSemaphoreCreate: semget failed (No space left on device)</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôԭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>źŵ<EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD>Postgres <20><>ÿ<EFBFBD><C3BF>DZ<EFBFBD>ڵĺ<DAB5>̨<EFBFBD><CCA8><EFBFBD>̶<EFBFBD><CCB6><EFBFBD>Ҫһ<D2AA><D2BB><EFBFBD>źŵơ<C5B5>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʱ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԱȽ<D4B1><C8BD>ٵĺ<D9B5>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster<65><72>ʹ<EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD> <i>-N</i> <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡֵ 32 <20>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster<65><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õĽ<C3B5><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǼӴ<C7BC><D3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˵<DABA> <font size="-1">SEMMNS</font> <20><> <font size="-1">SEMMNI</font> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>źŵƲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ܵ<EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܾ͸<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>źŵ<EFBFBD>֧<EFBFBD>֡<EFBFBD><EFBFBD>йع<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>źŵƵ<EFBFBD><EFBFBD><EFBFBD>ϸ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> <a href="http://www.postgresql.org/idocs/index.php?kernel-resources.html">PostgreSQL Administrator's Guide</a> <20><></p>
<h4><a id="3.5" name="3.5"></a>3.5) <20><><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD></h4>
<p>ȱʡʱ<EFBFBD><EFBFBD>PostgreSQL ֻ<><D6BB><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8> unix <20><><EFBFBD>׽<EFBFBD><D7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> <i>-i</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>postmaster</i><EFBFBD><EFBFBD><b><EFBFBD><EFBFBD><EFBFBD><EFBFBD></b>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ı<i>$PGDATA/pg_hba.conf</i> <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> host-based <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵġ<D3B5><C4A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> TCP/IP <20><><EFBFBD>ӡ<EFBFBD></p>
<h4><a id="3.6" name="3.6"></a>3.6) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ø<EFBFBD><C3B8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܣ<EFBFBD></h4>
<p><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD>ٲ<EFBFBD>ѯ<EFBFBD><EFBFBD><font size="-1">EXPLAIN</font> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>۲<EFBFBD> PostgreSQL <20><><EFBFBD>ν<EFBFBD><CEBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>Լ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD> <font size="-1">INSERT</font><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD> <font size="-1">COPY</font> <20><><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD> <font size="-1">INSERT</font> <20><><EFBFBD>öࡣ<C3B6><E0A1A3><EFBFBD>Σ<EFBFBD>û<EFBFBD>д<EFBFBD><D0B4><EFBFBD> <font size="-1">BEGIN WORK/COMMIT</font> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E4B1BB>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ͬһ<CDAC><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E6B4A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E4A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><E2BFAA><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸı<DDB8>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD><EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>á<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>-o -F</i> ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ֹ fsync()<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>fsync()</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˢ<EFBFBD>µ<EFBFBD><C2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD> postmaster -B ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD>Ӻ<EFBFBD><D3BA>˽<EFBFBD><CBBD><EFBFBD>ʹ<EFBFBD>õĹ<C3B5><C4B9><EFBFBD><EFBFBD>ڴ滺<DAB4><E6BBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>̫<EFBFBD><CCAB><EFBFBD><EFBFBD>postmaster <20><><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><DABA>ڹ<EFBFBD><DAB9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>ռ<EFBFBD><D5BC>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD>ơ<EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8K <20><><EFBFBD><EFBFBD>ȱʡ 64 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ú<EFBFBD>̨<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD> -S ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-S ֵ<><D6B5><EFBFBD><EFBFBD>K<EFBFBD>ֽڼƵģ<C6B5>ȱʡ<C8B1><CAA1> 512 <20><>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>512K<32><4B><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD> <font size="-1">CLUSTER</font> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>оۼ<D0BE><DBBC><EFBFBD><EFBFBD>š<EFBFBD><C5A1><EFBFBD><EFBFBD><EFBFBD> CLUSTER <20><><EFBFBD>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ϸ<EFBFBD>ڡ<EFBFBD></p>
<h4><a id="3.7" name="3.7"></a>3.7) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD></h4>
<p>PostgreSQL <20>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD><DAB1><EFBFBD>״̬<D7B4><CCAC>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2><EFBFBD>ܶԵ<DCB6><D4B5><EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><CDBE><EFBFBD>а<EFBFBD><D0B0><EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> --enable-cassert ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure<72><65><EFBFBD>кܶ<D0BA> <i>assert()</i> <20><><EFBFBD>غ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD>̺<EFBFBD><CCBA>ڷ<EFBFBD><DAB7><EFBFBD>ijЩδ<D0A9><CEB4>Ԥ<EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD><EFBFBD>ʱֹͣ<CDA3><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD></p>
<p>postmaster <20><> postgres <20><><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD>õ<EFBFBD>ѡ<EFBFBD><EFBFBD><EEA1A3><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster ʱ<><CAB1>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>־<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ȥ<EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD></p>
<pre>
cd /usr/local/pgsql
./bin/postmaster &gt;server.log 2&gt;&amp;1 &amp;
</pre>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD>Ŀ¼<C4BF><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> server.log <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CDB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2>postmaster <20><>һ<EFBFBD><D2BB> -d ѡ<><EFBFBD><EEA3AC>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>ϸ<EFBFBD>ڻ㱨<DABB><E3B1A8>-d ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹߵĵ<DFB5><C4B5>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܻ<EFBFBD><DCBB><EFBFBD><EFBFBD>ɾ޴<C9BE><DEB4><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster û<><C3BB><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postgres <20><>̨<EFBFBD><CCA8><EFBFBD>̣<EFBFBD>Ȼ<EFBFBD><C8BB>ֱ<EFBFBD>Ӽ<EFBFBD><D3BC><EFBFBD> SQL <20><><EFBFBD><EFBFBD><E4A1A3><EFBFBD><EFBFBD><b>ֻ</b> <20>Ƽ<EFBFBD><C6BC>ڵ<EFBFBD><DAB5>Ե<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ô<EFBFBD>ɡ<EFBFBD><C9A1><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD>ʱ<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>޶<EFBFBD><DEB6><EFBFBD><EFBFBD>Ƿֺű<D6BA>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD><C5B5>Է<EFBFBD><D4B7>ű<EFBFBD><C5B1><EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ۿ<EFBFBD><DBBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><E9A1A3>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǻ<EFBFBD>ʵ<EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD>л<EFBFBD><D0BB><EFBFBD>һ<EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD> <i>psql</i> <20><>Ӧ<EFBFBD><D3A6> <i>postgres</i> <20><><EFBFBD>̵<EFBFBD> <font size="-1">PID</font><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>postgres</i> <font size="-1">PID</font> <20>ϡ<EFBFBD><CFA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>öϵ㲢<CFB5>Ҵ<EFBFBD> <i>psql</i> <20><>ִ<EFBFBD>в<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD> <i>postgres</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PGOPTIONS="-W n"<22><>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD> <i>n</i> <20><EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><CDBF>Ը<EFBFBD><D4B8><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҹ<EFBFBD><D2B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3><EFBFBD>Ĺ<EFBFBD><C4B9>̡<EFBFBD></p>
<p>postgres <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> -s<><73>-A<><41><EFBFBD><EFBFBD> -t ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5>Ժ<EFBFBD><D4BA><EFBFBD><EFBFBD>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>dz<EFBFBD><C7B3><EFBFBD><EFBFBD>á<EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD> profiling ֧<>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD>Ա<EFBFBD><D4B1>۲<EFBFBD><DBB2><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD>ռ<EFBFBD>õ<EFBFBD>ִ<EFBFBD><D6B4>ʱ<EFBFBD><CAB1><EFBFBD>϶ࡣprofile <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pgsql/data/base/dbname Ŀ¼<C4BF>¡<EFBFBD><C2A1>ͻ<EFBFBD><CDBB><EFBFBD> profile <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿͻ<DABF><CDBB>˵<EFBFBD>ǰĿ¼<C4BF>¡<EFBFBD><C2A1><EFBFBD> Linux <20><>֧<EFBFBD><D6A7> profiling Ҫ<>ڱ<EFBFBD><DAB1><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><i>-DLINUX_PROFILE</i> <20><></p>
<h4><a id="3.8" name="3.8"></a>3.8) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ӵ<EFBFBD>¼ʱ<C2BC>յ<EFBFBD><D5B5><EFBFBD>Sorry, too many clients<74><73><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ʱ֧<CAB1>ֵIJ<D6B5><C4B2><EFBFBD><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p>ȱʡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32 <20><><EFBFBD>̡<EFBFBD><CCA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD> <i>-N</i> ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD> <i>postgresql.conf</i> <20>ļ<EFBFBD><C4BC><EFBFBD></p>
<p>Ҫע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>-N</i> <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD> 32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>-B</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<EFBFBD><EFBFBD> 64<36><34>-B <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> -N <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>˸<EFBFBD><CBB8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܿ<EFBFBD><DCBF><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>Ǹ<EFBFBD><C7B8><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>󡣶<EFBFBD><F3A1A3B6>ڴ<EFBFBD><DAB4><EFBFBD>Ŀ<EFBFBD>ĺ<EFBFBD><C4BA>˽<EFBFBD><CBBD>̣<EFBFBD><CCA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܻ<EFBFBD><DCBB><EFBFBD><E1B7A2><EFBFBD><EFBFBD><E3BBB9>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Unix <20>ں<EFBFBD><DABA><EFBFBD><EFBFBD>ò<EFBFBD><C3B2><EFBFBD>ֵ<EFBFBD><D6B5>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<font size="-1">SHMMAX</font><EFBFBD><EFBFBD><EFBFBD>źŵƵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD><font size="-1">SEMMNS</font> <20><> <font size="-1">SEMMNI</font><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><font size="-1">NPROC</font><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><font size="-1">MAXUPRC</font><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD><font size="-1">NFILE</font> <20><> <font size="-1">NINODE</font> <20><>Postgres <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>Դ<EFBFBD><D4B4></p>
<p><EFBFBD><EFBFBD> Postgres <20><><EFBFBD><EFBFBD> 6.5 <20>İ汾<C4B0><E6B1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<C8B1><CAA1> 64<36><34><EFBFBD><EFBFBD><EFBFBD>Ҷ<EFBFBD><D2B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD><DEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>޸<EFBFBD> <i>include/storage/sinvaladt.h</i> <20><><EFBFBD><EFBFBD> MaxBackendId <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BUILD<4C><44></p>
<h4><a id="3.9" name="3.9"></a>3.9) pgsql_tmp Ŀ¼<C4BF><EFBFBD><EFB6BC>Щʲô<CAB2><C3B4></h4>
<p><EFBFBD><EFBFBD>Ŀ¼<EFBFBD>±<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˲<EFBFBD>ѯִ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҪΪ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <font size="-1">ORDER BY</font> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򣬲<EFBFBD><F2A3ACB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>Ⱥ<EFBFBD>̨<EFBFBD><CCA8> -S <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD><EFBFBD>Ŀռ<D5BC><E4A3AC>ô<EFBFBD>ͻᴴ<CDBB><E1B4B4>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʱ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD></p>
<p><EFBFBD><EFBFBD>ʱ<EFBFBD>ļ<EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>ɾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD>̨<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˾Ϳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>Щ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><br />
</p>
<h4><a id="3.10" name="3.10"></a>3.10) ΪʲôҪ<C3B4><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>汾ʱ<E6B1BE><CAB1> dump <20><> restore <20><></h4>
<p>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD>ٵ<EFBFBD><D9B5>޸<EFBFBD>,<2C><><EFBFBD>˴<EFBFBD> 7.2 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.2.1 <20><><EFBFBD><EFBFBD>Ҫ dump <20><> restore<72><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.2 <20><> 7.3<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>Ƚϸ<EFBFBD><EFBFBD>ӣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD>ά<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>dump <20><><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>ͨ<EFBFBD>õĸ<C3B5>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>ز<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>µ<EFBFBD><C2B5>ڲ<EFBFBD><DAB2><EFBFBD>ʽ<EFBFBD><CABD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ʽû<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>pg_upgrade</i> <20>ű<EFBFBD><C5B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA> dump <20><> restor<6F><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>script <20><>ָ<EFBFBD><D6B8> <i>pg_upgrade</i> <20>Ըô<D4B8><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD>á<EFBFBD></p>
<hr />
<center>
<h2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h2>
</center>
<h4><a id="4.1" name="4.1"></a>4.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>α<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4></h4>
<20><><EFBFBD><EFBFBD> <font size="-1">DECLARE</font> <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1>Ϣ<EFBFBD><CFA2>
<h4><a id="4.2" name="4.2"></a>4.2)<29><><EFBFBD><EFBFBD>ֻ <font size="-1">SELECT</font> һ<><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>У<EFBFBD></h4>
<20><><EFBFBD><EFBFBD> <font size="-1">FETCH</font> <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> SELECT ... LIMIT....
<p><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD>У<EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD> <font size="-1">ORDER BY</font> <20>IJ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <font size="-1">ORDER BY</font> ƥ<>䣬PostgreSQL <20><><EFBFBD>ܾ<EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>򽫶<EFBFBD><F2BDABB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>д<EFBFBD><D0B4><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>С<EFBFBD></p>
<h4><a id="4.3" name="4.3"></a>4.3) <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i> <20><EFBFBD><EFBFB4><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD></h4>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD> <i>psql</i> <20><>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><i>pgsql/src/bin/psql/describe.c</i> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD> psql <20>ķ<EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL <20><><EFBFBD><EFBFBD><EFBFBD><E3BBB9><EFBFBD>Դ<EFBFBD> <i>-E</i> ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <i>psql</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õIJ<EFBFBD>ѯ<EFBFBD><EFBFBD>
<h4><a id="4.4" name="4.4"></a>4.4) <20><><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE>һ<EFBFBD>У<EFBFBD></h4>
<p>7.3 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <font size="-1">ALTER TABLE DROP COLUMN</font><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>ִ<EFBFBD><EFBFBD><EFBFBD>ܡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>İ汾<EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<pre>
BEGIN;
2005-05-11 14:56:50 +00:00
LOCK TABLE old_table;
SELECT ... -- select all columns but the one you want to remove
INTO TABLE new_table
FROM old_table;
DROP TABLE old_table;
ALTER TABLE new_table RENAME TO old_table;
COMMIT;
2005-05-16 02:50:20 +00:00
</pre>
<h4><a id="4.5" name="4.5"></a>4.5) һ<>У<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><DFB4>Ƕ<EFBFBD><C7B6>٣<EFBFBD></h4>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD>ƣ<EFBFBD>
<pre>
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<20><><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD><EFBFBD><EFBFBD> 1TB <20><><EFBFBD><EFBFBD><EFBFBD>ݿ⣩
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ磿 16TB
һ<>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ磿 1.6TB
2005-05-11 14:56:50 +00:00
һ<><D2BB><EFBFBD>ֶε<D6B6><CEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD>? 1GB
2005-05-16 02:50:20 +00:00
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD>,250-1600
һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
</pre>
<20><>Ȼ<EFBFBD><C8BB>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ܿ<EFBFBD><DCBF>ô<EFBFBD><C3B4>̿ռ<D5BC><E4A1A2><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD> 16 TB <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>ϵͳ<CFB5>Դ<EFBFBD><D4B4>ļ<EFBFBD><C4BC><EFBFBD>֧<EFBFBD>֡<EFBFBD><D6A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD><C3B6><EFBFBD> 1 GB <20><><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<CFB5>ߴ<EFBFBD><DFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD>Ҫ<EFBFBD>ġ<EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<EFBFBD>Ŀ<EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32K <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1>ߴ<EFBFBD><DFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD></p>
<h4><a id="4.6" name="4.6"></a>4.6)<29>һ<E6B4A2><D2BB><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ٴ<EFBFBD><D9B4>̿ռ</h4>
һ<><D2BB> Postgres <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><E0B5B1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><E6B4A2>ͬ<EFBFBD><CDAC><EFBFBD>ݵ<EFBFBD>5<EFBFBD><35><EFBFBD>Ĵ<EFBFBD><C4B4>̿ռ
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD> 100,000 <20>е<EFBFBD><D0B5>ļ<EFBFBD><C4BC><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ20<32>ֽڡ<D6BD>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD>ռ<EFBFBD>à2.8 MB<4D><42><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݵ<EFBFBD> PostgreSQL <20><><EFBFBD>ݿ<EFBFBD><DDBF>ļ<EFBFBD><C4BC><EFBFBD>Լ<EFBFBD><D4BC> 6.4 MB:</p>
<pre>
36 <20>ֽ<EFBFBD>: ÿ<>е<EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>
2005-05-11 14:56:50 +00:00
24 <20>ֽ<EFBFBD>: һ<><D2BB>int<6E>ֶκ<D6B6>һ<EFBFBD><D2BB><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD>ֶ<EFBFBD>
+ 4 <20>ֽ<EFBFBD>: ҳ<><D2B3><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
----------------------------------------
64 <20>ֽ<EFBFBD>ÿ<EFBFBD><C3BF>
PostgreSQL <20><><EFBFBD><EFBFBD>ҳ<EFBFBD>Ĵ<EFBFBD>С<EFBFBD><D0A1> 8192 <20>ֽ<EFBFBD> (8 KB)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
8192 <20>ֽ<EFBFBD>ÿҳ
------------------- = 128 <20><>/<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
64 <20>ֽ<EFBFBD>ÿ<EFBFBD><C3BF>
100000 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-------------------- = 782 <20><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
128 <20><>ÿҳ
782 <20><><EFBFBD><EFBFBD>ҳ * 8192 <20>ֽ<EFBFBD>/ҳ = 6,406,144 <20>ֽڣ<D6BD>6.4 MB<4D><42>
2005-05-16 02:50:20 +00:00
</pre>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><EFBFBD><EFBFBD>Ҳȷʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>ܴܺ<EFBFBD><EFBFBD><EFBFBD></p>
<p><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>ú<EFBFBD><EFBFBD>ٵĿռ</p>
<h4><a id="4.7" name="4.7"></a>4.7) <20><><EFBFBD>β鿴<CEB2><E9BFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>Լ<EFBFBD><D4BC>û<EFBFBD><C3BB>Ķ<EFBFBD><C4B6></h4>
<i><EFBFBD>psql</i> <20><><EFBFBD><EFBFBD><EFBFBD>б<E0B7B4><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD> \? <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD> pg_ <20><>ͷ<EFBFBD><CDB7>ϵͳ<CFB5><CDB3>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2> psql -l <20><><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD><D0B3><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>ݿ⡣
<p>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD> <i>pgsql/src/tutorial/syscat.source</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD> <font size="-1">SELECT</font><EFBFBD><EFBFBD></p>
<h4><a id="4.8" name="4.8"></a>4.8) <20>ҵIJ<D2B5>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD><EFBFBD>Ĵ<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Сֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD>ѯֻѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>н<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̴<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ܱ<EFBFBD>ֱ<EFBFBD>ӵض<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD>ɨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD>Ƿ<EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>йر<D0B9><D8B1><EFBFBD>ͳ<EFBFBD><CDB3>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Щͳ<D0A9><CDB3>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> VACUUM ANALYZE<5A><45><EFBFBD><EFBFBD> ANALYZE <20><><EFBFBD>á<EFBFBD>ʹ<EFBFBD><CAB9>ͳ<EFBFBD><CDB3>ֵ<EFBFBD><D6B5><EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><EFBFBD>õ<EFBFBD><C3B5>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD><CDB3>ֵ<EFBFBD><D6B5>ȷ<EFBFBD><C8B7><EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӷ<EFBFBD><D3B7><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD><C3A1>ڱ<EFBFBD><DAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݷ<EFBFBD><DDB7><EFBFBD><EFBFBD>仯ʱ<E4BBAF><CAB1>Ӧ<EFBFBD><D3A6><EFBFBD>ڽ<EFBFBD><DABD><EFBFBD>ͳ<EFBFBD><CDB3>ֵ<EFBFBD>Ļ<EFBFBD>ȡ<EFBFBD><C8A1></p>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY <20><>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>˳<EFBFBD><CBB3>ɨ<EFBFBD><EFBFBD><E8A3AC><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɨ<EFBFBD><C9A8>Ҫ<EFBFBD></p>
<p><EFBFBD><EFBFBD><EFBFBD>ǣ<EFBFBD><EFBFBD><EFBFBD> LIMIT <20><> ORDER BY <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊֻ<CEAA><EFBFBD>ر<EFBFBD><D8B1><EFBFBD>һС<D2BB><D0A1><EFBFBD>֡<EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD>Ȼ MAX() <20><> MIN() <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD> ORDER BY <20><> LLIMIT ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>СֵҲ<D6B5>ǿ<EFBFBD><C7BF>Եģ<D4B5><br />
<br />
<20><><EFBFBD> SELECT col<br />
<20><><EFBFBD> FROM tab<br />
<20><><EFBFBD> ORDER BY col [ DESC ]<br />
<20><><EFBFBD> LIMIT 1;</p>
<p><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIKE <20><> ~ ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD></p>
<ul>
<li><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD></li>
<li>LIKE ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> % <20><>ͷ<EFBFBD><CDB7></li>
<li>~ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD>ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ^ <20><>ͷ<EFBFBD><CDB7></li>
<li><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [a-e]<5D><></li>
<li><EFBFBD><EFBFBD>Сд<EFBFBD>޹صIJ<EFBFBD><EFBFBD>ң<EFBFBD><EFBFBD><EFBFBD> ILIKE <20><> ~* <20>Ȳ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.12 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></li>
<li><EFBFBD><EFBFBD><EFBFBD><EFBFBD> initdb ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<C8B1>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> C locale<6C><65></li>
</ul>
<h4><a id="4.9" name="4.9"></a>4.9) <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2>ܿ<EFBFBD><DCBF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵIJ<D2B5>ѯ<EFBFBD>ģ<EFBFBD></h4>
<20>ο<EFBFBD> <font size="-1">EXPLAIN</font> <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>
<h4><a id="4.10" name="4.10"></a>4.10) R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4></h4>
<p>R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD>ݡ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> B-tree <20><><EFBFBD><EFBFBD>ֻ<EFBFBD>ܴ<EFBFBD><DCB4><EFBFBD>һά<D2BB>ķ<EFBFBD>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ά<EFBFBD><CEAC><EFBFBD>ݡ<EFBFBD><DDA1><EFBFBD><EFBFBD><EFBFBD><E7A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ point <20><><EFBFBD>ֶ<EFBFBD><D6B6>Ͻ<EFBFBD><CFBD><EFBFBD>һ<EFBFBD><D2BB> R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôϵͳ<CFB5>ܸ<EFBFBD><DCB8><EFBFBD>Ч<EFBFBD>ػش<D8BB><D8B4><EFBFBD><EFBFBD><EFBFBD> <20><>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>η<EFBFBD>Χ<EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD>е<D0B5><E3A1B1><br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> R-Tree <20><><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ǣ<EFBFBD><br />
<br />
Guttman, A. "R-Trees: A Dynamic Index Structure for Spatial Searching." Proc of the 1984 ACM SIGMOD Int'l Conf on Mgmt of Data, 45-57.<br />
<br />
<20><EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Stonebraker <20>ġ<EFBFBD>Readings in Database Systems<6D><73><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD>ƪ<EFBFBD><C6AA><EFBFBD>¡<EFBFBD><br />
<br />
ϵͳ<CFB5><CDB3><EFBFBD>õ<EFBFBD> R-Tree <20><><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κͷ<CEBA><CDB7>Ρ<EFBFBD><CEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չΪ<D5B9><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ά<EFBFBD><CEAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD>չ R-trees <20><>Ҫһ<D2AA><D2BB><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀǰû<C7B0><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD></p>
<h4><a id="4.11" name="4.11"></a>4.11) ʲô<CAB2>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>Genetic Query Optimization<6F><6E><EFBFBD><EFBFBD></h4>
<p>GEQO ģ<><C4A3><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><E3B7A8>Genetic Algorithm<68><6D>GA<47><41><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵIJ<D3B5>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF></p>
<h4><a id="4.12" name="4.12"></a>4.12) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>Сд<D0A1>޹<EFBFBD><DEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ~ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽƥ<CABD><EFBFBD><E4A3AC> ~* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽƥ<CABD><EFBFBD><E4A1A3>дЩ<D0B4>޹ص<DEB9> LIKE <20><><EFBFBD>ֳ<EFBFBD>Ϊ ILIKE<4B><45><br />
<br />
<20><>Сд<D0A1>޹صĵ<D8B5>ʽ<EFBFBD>Ƚ<EFBFBD>ͨ<EFBFBD><CDA8>д<EFBFBD><D0B4><EFBFBD><EFBFBD><br />
<br />
<20><><EFBFBD> SELECT *<br />
<20><><EFBFBD> FROM tab<br />
<20><><EFBFBD> WHERE lower(col) = 'abc';<br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ñ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF>Դ<EFBFBD><D4B4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ɱ<EFBFBD><C9B1><EFBFBD><EFBFBD>õĺ<C3B5><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:<br />
<br />
<20><><EFBFBD> CREATE INDEX tabindex ON tab (lower(col));</p>
<h4><a id="4.13" name="4.13"></a>4.13) <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֶ<EFBFBD><D6B6>Ƿ<EFBFBD>Ϊ NULL<4C><4C></h4>
<p><EFBFBD><EFBFBD> IS NULL <20><> IS NOT NULL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΡ<D6B6><CEA1><br />
</p>
<h4><a id="4.14" name="4.14"></a>4.14) <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ʲô<CAB2><C3B4>ͬ<EFBFBD><CDAC></h4>
<p><EFBFBD> <20><><EFBFBD>͠<EFBFBD><CDA0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD>Ơ<EFBFBD><C6A0> ˵<><CBB5><br />
<20> --------------------------------------------------<br />
<20> "char"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> char<61><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1<><31><EFBFBD>ַ<EFBFBD> character<br />
<20> CHAR(#)<29><><EFBFBD><EFBFBD><EFBFBD> bpchar<61><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><DDB2><EFBFBD><EFBFBD><E5B3A4>ʱ<EFBFBD><CAB1><EFBFBD>Կո<D4BF><D5B8><EFBFBD><EFBFBD><EFBFBD><br />
<20> VARCHAR(#)<29> varchar<61><72><EFBFBD><EFBFBD> ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󳤶ȣ<F3B3A4B6><C8A3><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵIJ<C8B5><C4B2>ֲ<EFBFBD><D6B2><EFBFBD><EFBFBD><EFBFBD><br />
<20> TEXT<58><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> text<78><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD><C8BD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>󳤶<EFBFBD><F3B3A4B6><EFBFBD><EFBFBD><EFBFBD><br />
<20> BYTEA<45><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> bytea<65><61><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><br />
<br />
<20><>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><E3BDAB><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD>ơ<EFBFBD><C6A1><br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"varlena"<22><><EFBFBD><EFBFBD><E4B3A4><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>ĸ<EFBFBD><C4B8>ֽ<EFBFBD><D6BD>dz<EFBFBD><C7B3>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5>ռ<EFBFBD>õĿռ<C4BF><D5BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD>СҪ<D0A1><D2AA>һЩ<D2BB><D0A9>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>Ͷ<EFBFBD><CDB6><EFBFBD><EFBFBD>Ա<EFBFBD>ѹ<EFBFBD><D1B9><EFBFBD><EFBFBD><E6B4A2>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> TOAST <20>ѻ<EFBFBD><D1BB><EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4>̿ռ<CCBF>Ҳ<EFBFBD><D2B2><EFBFBD>ܱ<EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD>Ҫ<EFBFBD>١<EFBFBD><br />
<br />
CHAR(n) <20><><EFBFBD>ʺ<EFBFBD><CABA>ڴ洢<DAB4><E6B4A2><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EEB2BB><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>VARCHAR(n) <20>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󳤶ȵı<C4B1>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õġ<C3B5>TEXT <20><><EFBFBD><EFBFBD><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD>Ƴ<EFBFBD><C6B3>ȵ<EFBFBD><C8B5>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɴ<EFBFBD> 1G<31><47>BYTEA <20><><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD> NULL <20>ֽڣ<D6BD><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>;<EFBFBD><CDBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD>ܡ<EFBFBD></p>
<h4><a id="4.15.1" name="4.15.1"></a>4.15.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD>/<2F>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6></h4>
<p>PostgreSQL ֧<><D6A7> SERIAL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD><CDA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<20><><EFBFBD> CREATE TABLE person (<28><br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> id SERIAL,<2C><br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> name TEXT<58><br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> );<br />
<br />
<20><><EFBFBD>Զ<EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><br />
<20><><EFBFBD><EFBFBD><br />
<20><><EFBFBD> CREATE SEQUENCE person_id_seq;<br />
<20><><EFBFBD> CREATE TABLE person (<28><br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> id INT4 NOT NULL DEFAULT nextval('person_id_seq'),<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> name TEXT<58><br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> );<br />
<20><><EFBFBD> CREATE UNIQUE INDEX person_id_key ON person ( id );<br />
<br />
<20>ο<EFBFBD> create_sequence <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еĸ<D0B5><C4B8><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD>е<EFBFBD> oid <20>ֶ<EFBFBD><D6B6><EFBFBD>Ϊһ<CEAA><D2BB>Ψһֵ<D2BB><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><E3B5B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ⣬<DDBF><E2A3AC><EFBFBD><EFBFBD>Ҫʹ<D2AA><CAB9> pg_dump <20><> -o ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> COPY WITH OIDS ѡ<><D1A1><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD> OID<49><44><EFBFBD></p>
<h4><a id="4.15.2" name="4.15.2"></a>4.15.2) <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кŵ<D0BA>ֵ<EFBFBD><D6B5></h4>
<p>һ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD> nextval() <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> SERIAL ֵ<><D6B5>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ʹ<EBA1A3><CAB9> <a href="#4.15.1">4.15.1</a> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<br />
<20><><EFBFBD> new_id = execute("SELECT nextval('person_id_seq')");<br />
<20><><EFBFBD> execute("INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal')");<br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF>ʹ<EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD> new_id <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E7A3AC>Ϊ person <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SEQUENCE <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD> &lt;table&gt;_&lt;serialcolumn&gt;_seq<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> table <20><> serialcolumn <20>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƺ<EFBFBD><C6BA><EFBFBD><EFBFBD><EFBFBD> SERIAL <20>ֶε<D6B6><CEB5><EFBFBD><EFBFBD>ơ<EFBFBD><C6A1><br />
<br />
<20><><EFBFBD>Ƶģ<C6B5><C4A3><EFBFBD> SERIAL <20><><EFBFBD><EFBFBD>ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD> currval() <20><><EFBFBD><EFBFBD><EFBFBD>ո<EFBFBD>ֵ<EFBFBD><D6B5> SERIAL ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<br />
<20><><EFBFBD> execute("INSERT INTO person (name) VALUES ('Blaise Pascal')");<br />
<20><><EFBFBD> new_id = execute("SELECT currval('person_id_seq')");<br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ô<EFBFBD> INSERT <20><><EFBFBD><EFBFBD>ص<EFBFBD> <a href="4.16">OID</a> <20><><EFBFBD><EFBFBD>ȱʡֵ<CAA1><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱ<EFBFBD><C8B1><EFBFBD><EFBFBD>ֲ<EFBFBD>Եķ<D4B5><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Perl <20>ʹ<EFA3AC>ô<EFBFBD><C3B4><EFBFBD> Edmund Mergl <20><> DBD::Pg ģ<><C4A3><EFBFBD><EFBFBD> DBI<42><49>oid ֵ<><D6B5><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8> $sth-&gt;execute() <20><><EFBFBD><EFBFBD> $sth-&gt;{pg_oid_status} <20><><EFBFBD>á<EFBFBD><C3A1></p>
<h4><a id="4.15.3" name="4.15.3"></a>4.15.3) ʹ<><CAB9> currval() <20><> nextval() <20><EFBFBD><E1B5BC>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD>ᡣcurrval() <20><><EFBFBD>غ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD>̶<EFBFBD><CCB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ǰֵ<C7B0><D6B5><br />
</p>
<h4><a id="4.15.4" name="4.15.4"></a>4.15.4) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><ECB3A3>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>أ<EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>ֶε<D6B6>ȡֵ<C8A1>д<EFBFBD><D0B4>ڼ<EFBFBD><DABC><EFBFBD><EFBFBD>أ<EFBFBD></h4>
<p>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD>񣬲<EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͻᵼ<EFBFBD><EFBFBD>ز<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кų<EFBFBD><EFBFBD>ּ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<h4><br />
<a id="4.16" name="4.16"></a>4.16) ʲô<CAB2><C3B4> OID<49><44>ʲô<CAB2><C3B4> TID<49><44></h4>
<p>OID <20><> PostgreSQL <20><><EFBFBD>е<EFBFBD>Ψһ<CEA8><D2BB>ʶ<EFBFBD><CAB6>PostgreSQL <20><EFBFBD><EFB4B4><EFBFBD><EFBFBD>ÿһ<C3BF>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ψһ<CEA8><D2BB> OID<49><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> initdb <20><><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD> OID <20><>С<EFBFBD><D0A1> 16384 <20><><EFBFBD>μ<EFBFBD> include/access/transam.h<><68><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <20><><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><DABB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>ȱʡʱ<CAA1><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ OID <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>Ψһ<CEA8><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><>װ<EFBFBD><D7B0>Ҳ<EFBFBD><D2B2>Ψһ<CEA8>ġ<EFBFBD><C4A1><br />
<br />
PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> OID <20>ڱ<EFBFBD>֮<EFBFBD><EFBFBD><E4BDA8><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD>Щ OID <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD>ʶ<EFBFBD>ض<EFBFBD><D8B6><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFA1A3><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD> OID <20>洢 OID ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <20>ֶ<EFBFBD><D6B6>ϴ<EFBFBD><CFB4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><D4BF>ٷ<EFBFBD><D9B7>ʡ<EFBFBD><CAA1><br />
<br />
OID <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ʹ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>︳ֵ<EFB8B3><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <20>ijɱ<C4B3><C9B1><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>ݱ<EFBFBD><DDB1>Ĵ<EFBFBD>ԭʼ OID <20>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<br />
<20><><EFBFBD> CREATE TABLE new(old_oid oid, mycol int);<br />
<20><><EFBFBD> SELECT old_oid, mycol INTO new FROM old;<br />
<20><><EFBFBD> COPY new TO '/tmp/pgtable';<br />
<20><><EFBFBD> DELETE FROM new;<br />
<20><><EFBFBD> COPY new WITH OIDS FROM '/tmp/pgtable';<br />
<br />
OID <20><>4<EFBFBD>ֽڵ<D6BD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><DAB3><EFBFBD>40<34><30>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD>˱<EFBFBD><CBB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˱<EFBFBD><CBB1><EFBFBD>֮ǰ<D6AE><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD><br />
<br />
TID <20><><EFBFBD>ڱ<EFBFBD>ʶ<EFBFBD><CAB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ飨<DDBF><E9A3A8>ַ<EFBFBD><D6B7><EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD>ڣ<EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD><C6B5>ض<EFBFBD><D8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD>TID <20><><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>غ<EFBFBD><D8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<C4B1><E4A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD></p>
<h4><a id="4.17" name="4.17"></a>4.17) PostgreSQL ʹ<>õ<EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4></h4>
<p>һЩԴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ʹ<EFBFBD><EFBFBD>һЩ<EFBFBD>и<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>÷<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>֣<EFBFBD><EFBFBD><br />
<20><><EFBFBD> table, relation, class<73><br />
<20><><EFBFBD> row, record, tuple<6C><br />
<20><><EFBFBD> column, field, attribute<74><br />
<20><><EFBFBD> retrieve, select<63><br />
<20><><EFBFBD> replace, update<74><br />
<20><><EFBFBD> append, insert<72><br />
<20><><EFBFBD> OID, serial value<75><br />
<20><><EFBFBD> portal, cursor<6F><br />
<20><><EFBFBD> range variable, table name, table alias<61><br />
<br />
<20><>һ<EFBFBD><D2BB>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><a href="http://hea-www.harvard.edu/MST/simul/software/docs/pkgs/pgsql/glossary/glossary.html">http://hea-www.harvard.edu/MST/simul/software/docs/pkgs/pgsql/glossary/glossary.html</a> <20><><EFBFBD><EFBFBD></p>
<h4><a id="4.18" name="4.18"></a>4.18) Ϊʲô<CAB2><C3B4><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><i>ERROR: Memory exhausted in AllocSetAlloc()</i><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD>ܿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD>ù<EFBFBD><EFBFBD>ˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˶<EFBFBD>ijЩ<EFBFBD><EFBFBD>Դ<EFBFBD>нϵ͵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster ֮ǰ<D6AE><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><br />
<br />
<20><><EFBFBD> ulimit -d 262144<br />
<20><><EFBFBD> limit datasize 256m<br />
<br />
ȡ<><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD> shell<6C><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB>һ<EFBFBD><D2BB><EFBFBD>ܳɹ<DCB3><C9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñȽϸߣ<CFB8><DFA3><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>ɡ<EFBFBD><C9A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD>ڵ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>̣<EFBFBD><CCA3>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к󴴽<D0BA><F3B4B4BD><EFBFBD><EFBFBD>ӽ<EFBFBD><D3BD>̡<EFBFBD><CCA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SQL<51>ͻ<EFBFBD><CDBB><EFBFBD>ʱ<EFBFBD><CAB1>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̫<EFBFBD><CCAB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E2A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>пͻ<D0BF><CDBB><EFBFBD>֮ǰִ<C7B0><D6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="4.19" name="4.19"></a>4.19) <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD> PostgreSQL <20>İ汾<C4B0><E6B1BE></h4>
<p><EFBFBD><EFBFBD> psql <20><EFBFBD><EFA3AC><EFBFBD><EFBFBD> SELECT version()<29><><br />
</p>
<h4><a id="4.20" name="4.20"></a>4.20) Ϊʲô<CAB2>ҵĴ<D2B5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD><i>invalid large obj descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></i><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD>κδ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BEGIN WORK <20><> COMMIT<49><54>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>Χ lo_open ... lo_close<73><65><EFBFBD><br />
<br />
Ŀǰ PostgreSQL ǿ<><C7BF>ʵʩ<CAB5><CAA9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ύʱ<E1BDBB>رմ<D8B1><D5B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>״ζԴ<CEB6><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><E1B5BC>һ<EFBFBD><D2BB> invalid large obj descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB>ʹ<EFBFBD><CAB9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EBA3A8><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><E4A3A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôһ<C3B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ÿͻ<C3BF><CDBB>˽ӿڣ<D3BF><DAA3><EFBFBD> ODBC<42><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ set auto-commit off<66><66></p>
<h4><a id="4.21" name="4.21"></a>4.21) <20><><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>һ<EFBFBD><D2BB>ȱʡֵ<CAA1>ǵ<EFBFBD>ǰʱ<C7B0><CAB1><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6></h4>
<p>ʹ<EFBFBD><EFBFBD> CURRENT_TIMESTAMP<4D><50><br />
<br />
<20><><EFBFBD> CREATE TABLE test(x int, modtime timestamp DEFAULT CURRENT_TIMESTAMP);</p>
<h4><a id="4.22" name="4.22"></a>4.22) Ϊʲôʹ<C3B4><CAB9> IN <20><><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF>ô<EFBFBD><C3B4><EFBFBD><EFBFBD></h4>
<p>Ŀǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD>ÿһ<EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD>ɨ<EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD>Ľ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD>غܶ<EFBFBD><EFBFBD>У<EFBFBD>IN ִ<>еúܿ졣Ϊ<ECA1A3>˼ӿ<CBBC><D3BF><EFBFBD><EFBFBD><EFBFBD> IN <20><>ѯ<EFBFBD><D1AF>ִ<EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> EXISTS <20>滻 IN<49><4E><EFBFBD><br />
<br />
<20><><EFBFBD> SELECT *<br />
<20><><EFBFBD> FROM tab<br />
<20><><EFBFBD> WHERE col IN (SELECT subcol FROM subtab);<br />
<br />
<20><>Ϊ<EFBFBD><CEAA><EFBFBD><br />
<br />
<20><><EFBFBD> SELECT *<br />
<20><><EFBFBD> FROM tab<br />
<20><><EFBFBD> WHERE EXISTS (SELECT subcol FROM subtab WHERE subcol = col);<br />
<br />
<20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ִ<EFBFBD>еø<D0B5><C3B8>죬subcol Ӧ<><D3A6><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><E6B1BE><EFBFBD>޲<EFBFBD><DEB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD></p>
<h4><a id="4.23" name="4.23"></a>4.23) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> outer join <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD></h4>
<p>PostgreSQL <20><><EFBFBD>ñ<EFBFBD>׼<EFBFBD><D7BC> SQL <20>﷨֧<EFB7A8><D6A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><br />
<br />
<20><><EFBFBD> SELECT *<br />
<20><><EFBFBD> FROM t1 LEFT OUTER JOIN t2 ON (t1.col = t2.col);<br />
<br />
<20><><EFBFBD><br />
<20><><EFBFBD> SELECT *<br />
<20><><EFBFBD> FROM t1 LEFT OUTER JOIN t2 USING (col);<br />
<br />
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ۵IJ<DBB5>ѯ<EFBFBD><D1AF> t1.col <20><> t2.col <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD>ҷ<EFBFBD><D2B7><EFBFBD>?t1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>ӵ<EFBFBD><D3B5>У<EFBFBD><D0A3><EFBFBD>Щ<EFBFBD><D0A9> t2 <20><>û<EFBFBD><C3BB>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD><EFBFBD>(RIGHT OUTER JOIN)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <20><>δ<EFBFBD><CEB4><EFBFBD>ӵ<EFBFBD><D3B5>С<EFBFBD><D0A1><EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>FULL OUTER JOIN<49><4E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t1 <20><> t2 <20><>δ<EFBFBD><CEB4><EFBFBD>ӵ<EFBFBD><D3B5>С<EFBFBD><D0A1>ؼ<EFBFBD><D8BC><EFBFBD> OUTER <20><><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD>[<5B><>]<5D><><EFBFBD>Ӻ<EFBFBD><D3BA><EFBFBD>ȫ[<5B><>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>ѡ<EFBFBD>ģ<EFBFBD><C4A3><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>INNER JOIN<49><4E><EFBFBD><EFBFBD><br />
<br />
<20>ڴ<EFBFBD>ǰ<EFBFBD>İ汾<C4B0>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD> UNION <20><> NOT IN <20><>ģ<EFBFBD><EFBFBD><E2A1A3><EFBFBD><EFBFBD><E7A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD> tab1 <20><> tab2 ֮<><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><br />
<br />
<20><><EFBFBD> SELECT tab1.col1, tab2.col2<br />
<20><><EFBFBD> FROM tab1, tab2<br />
<20><><EFBFBD> WHERE tab1.col1 = tab2.col1<br />
<br />
<20><><EFBFBD> UNION ALL<br />
<br />
<20><><EFBFBD> SELECT tab1.col1, NULL<br />
<20><><EFBFBD> FROM tab1<br />
<20><><EFBFBD> WHERE tab1.col1 NOT IN (SELECT tab2.col1 FROM tab2)<br />
<20><><EFBFBD> ORDER BY col1</p>
<h4><a id="4.24" name="4.24"></a>4.24) <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><E6BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF></h4>
<p>û<EFBFBD>а<EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ⡣<EFBFBD><EFBFBD>Ϊ PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD>ص<EFBFBD>ϵͳĿ¼<C4BF><C2BC>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>Ҳδ<D2B2><CEB4>ȷ<EFBFBD><C8B7><br />
<br />
contrib/dblink <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֿ<EFBFBD><D6BF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>ͬʱ<CDAC><CAB1><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD>ݿ<DDBF>ڿͻ<DABF><CDBB>˺ϲ<CBBA><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="4.25" name="4.25"></a>4.25) <20><><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6>л<EFBFBD><D0BB><EFBFBD><EFBFBD>У<EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PL/pgSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> refcursors <20><><EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD> <a href="http://www.PostgreSQL.org/idocs/index.php?plpgsql-cursors.html">http://www.PostgreSQL.org/idocs/index.php?plpgsql-cursors.html</a>, 23.7.3.3<EFBFBD>ڡ<EFBFBD><br />
</p>
<h4><a id="4.26" name="4.26"></a>4.26) Ϊʲô<CAB2><C3B4> PL/PgSQL <20><><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2>ܿɿ<DCBF><C9BF>ش<EFBFBD><D8B4><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD></h4>
<p>PL/PgSQL <20><><EFBFBD><EFBFBD><E6BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3>ɴ˴<C9B4><CBB4><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>õĸ<C3B5><C4B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> PL/PgSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD><EFBFBD>ؽ<EFBFBD><D8BD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD>ٴε<D9B4><CEB5>øú<C3B8><C3BA><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼָ<C8BB><D6B8><EFBFBD>ɵ<EFBFBD><C9B5><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PL/PgSQL <20><><EFBFBD><EFBFBD> EXECUTE <20><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>з<EFBFBD><D0B7>ʡ<EFBFBD><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ᱣ֤<E1B1A3><D6A4>ѯ<EFBFBD><D1AF>ִ<EFBFBD><D6B4>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="4.27" name="4.27"></a>4.27) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݸ<EFBFBD><DDB8><EFBFBD>ѡ<EFBFBD></h4>
<p><EFBFBD>м<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F>ӷ<EFBFBD>ʽ<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>ѡ<EFBFBD><EFBFBD><EEA1A3>Щѡ<D0A9><D1A1>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD>и<EFBFBD><D0B8>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ֻ<EFBFBD>ܽ<EFBFBD><DCBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>ҳ <a href="http://gborg.PostgreSQL.org/genpage?replication_research">http://gborg.PostgreSQL.org/genpage?replication_research</a><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD><D0B3><EFBFBD><EFBFBD><EFBFBD>Щѡ<D0A9><EFBFBD><EEA1A3> <a href="http://gborg.PostgreSQL.org/project/pgreplication/projdisplay.php">http://gborg.PostgreSQL.org/project/pgreplication/projdisplay.php</a> <20><><EFBFBD>ڽ<EFBFBD><DABD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƵĽ<C6B5><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="4.28" name="4.28"></a>4.28) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>ѡ<EFBFBD></h4>
<p>contrib/pgcrypto <20><><EFBFBD><EFBFBD><EFBFBD>˺ܶ<CBBA><DCB6><EFBFBD> SQL <20><>ѯ<EFBFBD><D1AF>ʹ<EFBFBD>õļ<C3B5><C4BC>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܿͻ<DCBF><CDBB>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>Ψһ<CEA8><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pg_hba.conf <20>в<EFBFBD><D0B2><EFBFBD> hostss <20><><EFBFBD><br />
<br />
7.3 <20><EFBFBD><E6B1BE><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><D0BC>ܡ<EFBFBD><DCA1><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>İ汾<C4B0>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postgresql.conf <20>д<EFBFBD><D0B4><EFBFBD> PASSWORD_ENCRYPTION ѡ<><EFBFBD><EEA1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD><DABC>ܵ<EFBFBD><DCB5>ļ<EFBFBD>ϵͳ<CFB5>ϣ<EFBFBD><CFA3>Դﵽ<D4B4><EFB5BD><EFBFBD>ܵ<EFBFBD>Ŀ<EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><br />
<br />
--------------------------------------------------------------------------------</p>
<h2 align="center"><EFBFBD><EFBFBD>չ PostgreSQL</h2>
<h4><a id="5.1" name="5.1"></a>5.1) <20><>д<EFBFBD><D0B4>һ<EFBFBD><D2BB><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><E5BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> psql <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ϊʲô<CAB2><EFBFBD><E1B5BC> core dump<6D><70></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><EFBFBD><EFBFBD>ܶࡣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><EFBFBD>Գ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="5.2" name="5.2"></a>5.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD>һЩͦ<D0A9><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺͺ<CDBA><CDBA><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD> pgsql-hackers <20>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ջᱻ<D5BB>ŵ<EFBFBD> contrib/ <20><>Ŀ¼<C4BF><C2BC><br />
</p>
<h4><a id="5.3" name="5.3"></a>5.3) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD> C <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD><EFBFBD> PostgreSQL 7.3 <20>Ժ<EFBFBD><D4BA>İ汾<C4B0>У<EFBFBD>C, PL/PgSQL <20><> SQL <20><>ȫ֧<C8AB>ַ<EFBFBD><D6B7><EFBFBD>ֵΪ<D6B5><CEAA><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ο<EFBFBD> <20><><EFBFBD><EFBFBD>Աָ<D4B1>ϣ<EFBFBD>the Programmer's Guide<64><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD> contrib/tablefunc <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> C д<>ķ<EFBFBD><C4B7><EFBFBD>ֵΪ<D6B5><CEAA><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD></p>
<h4><a id="5.4" name="5.4"></a>5.4) <20><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD>һ<EFBFBD><D2BB>Դ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD>±<EFBFBD><C2B1><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>ı</h4>
<p>Makefiles <20><>û<EFBFBD>а<EFBFBD><D0B0><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>make clean<61><6E> <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> make <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD> GCC <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Բ<EFBFBD><D4B2><EFBFBD>ѡ<EFBFBD><D1A1> --enable-depend <20>ñ<EFBFBD><C3B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5></p>
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