postgresql/doc/FAQ_chinese

                          PostgreSQL 常<><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FAQ<41><51>
                                       
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2007 年 1 <20> 5 <20><> <20><><EFBFBD><EFBFBD> 15:40:20 EST
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2007 年 1 <20> 29 <20><> <20><><EFBFBD><EFBFBD> 22:48:04 CST
   
   <20><><EFBFBD>维<EFBFBD><E7BBB4>人<EFBFBD><E4BABA><EFBFBD>Bruce Momjian (pgman@candle.pha.pa.us)
   <20><><EFBFBD><EFBFBD>维<EFBFBD><E7BBB4>人<EFBFBD><E4BABA><EFBFBD>Daojing.Zhou<6F><75>doudou586@gmail.com<6F><6D>
   
   <20><><EFBFBD>档<EFBFBD><E6A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5>
   http://www.postgresql.org/files/documentation/faqs/FAQ.html<6D><6C><EFBFBD><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>平<EFBFBD><E5B9B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.postgresql.org/docs/faq/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>
     _________________________________________________________________
   
常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   1.1)PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.2)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>PostgreSQL <20><>
   1.3)PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.4)PostgreSQL<51><4C>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>平<EFBFBD><E5B9B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.5)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C>
   1.6)<29><><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.7)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.8)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><E4BAA4>个BUG<55><47><EFBFBD><EFBFBD><EFBFBD>
   1.9)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解已<E8A7A3><E5B7B2><EFBFBD> BUG <20><>缺<EFBFBD><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.10)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><E6A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.11)<29><><EFBFBD>该<EFBFBD><E8AFA5> <20><><EFBFBD><EFBFBD><EFBFBD>  SQL <20><>
   1.12)<29><><EFBFBD><EFBFBD><EFBFBD>交补<E4BAA4><E8A1A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.13)PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD>起<EFBFBD><E8B5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   2.1)<29>们<EFBFBD><E4BBAC>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20>交<EFBFBD><E4BAA4><EFBFBD>
   2.2)<29><><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD>以<EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD> Web 页<><E9A1B5><EFBFBD><EFBFBD>
   2.3)PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>形<EFBFBD><E5BDA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
系<EFBFBD><EFBFBD>管<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   3.1)<29><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD> /usr/local/pgsql 以<><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.2)<29><><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>
   3.3)<29><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.4)PostgreSQL <20><><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.5)为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Sorry, too many clients<74> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.6)PostgreSQL<51><4C>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9>
   3.7)(使<><E4BDBF>PostgreSQL)<29><><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD>硬件 <20><>
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   4.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD>头<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.2)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<71><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD>令并<E4BBA4><E5B9B6><EFBFBD>
   <20><><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC>
   4.3) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD>
   4.4) <20><><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD>个表<E4B8AA><E8A1A8><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.5) <20><><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD>
   4.6) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询没<E8AFA2><E6B2A1><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>
   4.7) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>估<EFBFBD><E4BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD>
   4.8) <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD>索<EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
   <20><>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.9) <20><><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD>为
   NULL<4C><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>论<EFBFBD><E8AEBA>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>NULL<4C><4C><EFBFBD><EFBFBD>
   4.10) <20><><EFBFBD><EFBFBD>符类<E7ACA6><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.11.1) <20><><EFBFBD> <20><>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5>
   4.11.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.11.3) <20><><EFBFBD>使<EFBFBD><E4BDBF> currval() <20><>导<EFBFBD><E5AFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.11.4) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.12) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID<49><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID <20><>
   4.13) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<E8AFAF><E4BFA1><EFBFBD>ERROR: Memory exhausted in
   AllocSetAlloc()<29><><EFBFBD>
   4.14) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.15) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><E5BBBA>个缺<E4B8AA><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5>
   4.16) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>outer join<69><6E><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>
   4.17) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>
   4.18) <20><><EFBFBD><EFBFBD>让<EFBFBD><E8AEA9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.19) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>PL/PgSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><E4B8B4>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<E8AFAF><E4BFA1><EFBFBD>relation
   with OID ##### does not exist<73><74><EFBFBD>
   4.20) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.21) 为<><E4B8BA><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     _________________________________________________________________
   
常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  1.1)PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL 读<><E8AFBB> Post-Gres-Q-L<><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称为Postgres
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载声<E8BDBD><E5A3B0><EFBFBD>件<EFBFBD><E4BBB6> MP3 <20> <20><><EFBFBD> <20>
   
   PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>代 DBMS 系<><E7B3BB><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD>强<EFBFBD><E5BCBA><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD><E8B4B9><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>代<EFBFBD> <20><><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD>
   
   PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>主<EFBFBD><E4B8BB>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个社<E4B8AA>
   <20><><EFBFBD><EFBFBD>项<EFBFBD><E9A1B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被任<E8A2AB><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><E8AFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FAQ<41><51>
   http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html
   
  1.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><>
  
   <20><><EFBFBD><EFBFBD><EFBFBD> <20><>寻<EFBFBD><E5AFBB>PostgreSQL<51><4C><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   央<><E5A4AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>---<2D> 为<><E4B8BA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>确<EFBFBD><E7A1AE><EFBFBD>个
   <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CVS管<53><E7AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD><EFBFBD>设<EFBFBD><E8AEBE>主<EFBFBD><E4B8BB><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>对PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL项<4C><E9A1B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB>人<EFBFBD>
   <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>人<EFBFBD>社<EFBFBD><E7A4BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1>订<EFBFBD><E8AEA2><EFBFBD>件<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD>讨论
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD>详<EFBFBD><E8AFA6> <20><><EFBFBD>人<EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD> (Developer's FAQ)
   <20><><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD><EFBFBD><EFBFBD>
   
  1.3)PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>?
  
   PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>BSD<53><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><E8AEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>以<EFBFBD><E4BBA5><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>代<EFBFBD> <20><><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> 软件<E8BDAF><E4BBB6><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们追<E4BBAC><E8BFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>责任<E8B4A3><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD>中
   须<><E9A1BB><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD>声<EFBFBD><E5A3B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD>们<EFBFBD>使<EFBFBD><E4BDBF><EFBFBD>BSD<53><44>声<EFBFBD><E5A3B0>容<EFBFBD><E5AEB9>
   
   PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>系<EFBFBD><E7B3BB>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><63>1996-2005<30><35>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><63>1994-1996
   <20> <20><>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>Portions copyright (c) 1996-2005,PostgreSQL Global Development Group
   Portions Copyright (c) 1994-6 Regents of the University of
   California<69><61>
   
   <20>许为任<E4B8BA><E4BBBB><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><E6A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB>费<EFBFBD>
   <20><><EFBFBD> 并<><E5B9B6><EFBFBD> 须<><E9A1BB>署<EFBFBD> <20><>
   <20><>产<EFBFBD><E4BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>声<EFBFBD><E5A3B0><EFBFBD><EFBFBD>段以<E6AEB5><E4BBA5><EFBFBD><EFBFBD><EFBFBD>两段<E4B8A4><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>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><>
   
   <20><>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 使<><E4BDBF><EFBFBD><EFBFBD>
   <20>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD>档<EFBFBD>导<EFBFBD><E5AFBC><EFBFBD>对任<E5AFB9><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>伴<EFBFBD><E4BCB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>失<EFBFBD>责任<E8B4A3><E4BBBB><EFBFBD><EFBFBD>使<EFBFBD> <20><>大<EFBFBD><E5A4A7>
   <20>已<EFBFBD><E5B7B2>建议<E5BBBA><E8AEAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>失<EFBFBD><E5A4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>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><>
   
   <20> <20><>大<EFBFBD><E5A4A7><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><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><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>份软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><>大<EFBFBD><E5A4A7>
   <20>没<EFBFBD>责任<E8B4A3><E4BBBB><EFBFBD>维<EFBFBD><E7BBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>强<EFBFBD><E5BCBA>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>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><>
   
  1.4)PostgreSQL <20><>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>平<EFBFBD><E5B9B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD>说<EFBFBD><E8AFB4><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对 UNIX <20><>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD>平<EFBFBD><E5B9B3><EFBFBD>
   
   PostgreSQl<51><6C><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>微软Windows-NT<4E><54><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Win2000
   SP4<50><34>WinXP <20> Win2003<30><33>已<EFBFBD><E5B7B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://pgfoundry.org/projects/pginstaller<65><72>载<EFBFBD><E8BDBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>MSDOS<4F>Windows<77><73><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD> <20><>Win95<39><35>Win98<39><38>WinMe<4D><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Cygwin模<6E><E6A8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个为Novell Netware 6<><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://forge.novell.com<6F><6D><EFBFBD><EFBFBD><EFBFBD>为OS/2(eComStation)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://hobbes.nmsu.edu/cgi-bin/h-search?sh=1&button=Search&key=postgre
   SQL&stype=all&sort=type&dir=%2F <20><>载<EFBFBD>
   
  1.5) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.postgresql.org/ftp/<2F><>载<EFBFBD><E8BDBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FTP<54><50><EFBFBD><EFBFBD>
   ftp://ftp.PostgreSQL.org/pub/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD>
   
  1.6) <20><><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8.2.1 <20>
   
   <20>们计<E4BBAC><E8AEA1><EFBFBD>年<EFBFBD><E5B9B4><EFBFBD><EFBFBD><EFBFBD>个主<E4B8AA><E4B8BB><EFBFBD>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 个<><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  1.7) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL社<4C><E7A4BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表为<E8A1A8><E4B8BA>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>帮<EFBFBD><E5B8AE><EFBFBD><EFBFBD>订<EFBFBD><E8AEA2><EFBFBD>件<EFBFBD>表<EFBFBD>主
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://www.postgresql.org/community/lists/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>General <20>
   Bug<75><67>件<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   主<><E4B8BB><EFBFBD>IRC<52><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FreeNode(irc.freenode.net)<29>#postgresql<71><6C>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<E4BBA5><E4BDBF>UNIX<49><58><EFBFBD><EFBFBD>irc<72><63><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> irc -c '#postgresql'
   "$USER" irc.freenode.net <20><><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IRC客<43><E5AEA2>端<EFBFBD><E7ABAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>个PostgreSQL<51>西<EFBFBD><E8A5BF><EFBFBD><EFBFBD><EFBFBD>(#postgersql-es)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   (#postgresql-fr)<29><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>EFNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个PostgreSQL<51>交<EFBFBD><E4BAA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD>http://techdocs.postgresql.org/companies.php<68><70>
   <20><><EFBFBD>
   
  1.8) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><E4BAA4>个BUG<55><47><EFBFBD><EFBFBD><EFBFBD>
  
   <20><>访<EFBFBD><E8AEBF>
   http://www.postgresql.org/support/submitbug<75><67>填<EFBFBD>Bug<75><67><EFBFBD><EFBFBD>表<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    <20><><EFBFBD><EFBFBD><EFBFBD>访<EFBFBD><E8AEBF>ftp<74><70><EFBFBD><EFBFBD>ftp://ftp.PostgreSQL.org/pub/
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD>补<EFBFBD><E8A1A5><EFBFBD>
   
   <20><><EFBFBD>使<EFBFBD><E4BDBF>Bug<75>交表<E4BAA4> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C>件<EFBFBD>表<EFBFBD>Bug<75>常<EFBFBD><E5B8B8><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>
     * <20><>交<EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<75><67><EFBFBD> <20>
     * <20><>交<EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD>个已<E4B8AA><E5B7B2><EFBFBD>Bug并<67><E5B9B6>已<EFBFBD><E5B7B2><EFBFBD> <20><>TODO<44><4F><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD>表<EFBFBD>
     * <20><>交<EFBFBD>Bug已<67><E5B7B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被修<E8A2AB><E4BFAE><EFBFBD>
     * <20><>交<EFBFBD>Bug已修<E5B7B2><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>补<EFBFBD><E8A1A5><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6>
     * 请<><E8AFB7><EFBFBD>交<EFBFBD><E4BAA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><E8AFA6><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD><EFBFBD>
          + <20><><EFBFBD>系<EFBFBD><E7B3BB>
          + PostgreSQL<51><4C><EFBFBD>
          + <20><><EFBFBD><EFBFBD><EFBFBD>Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <20><><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1>
          + <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>踪<EFBFBD><E8B8AA><EFBFBD><EFBFBD>
     * <20><>交<EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD>
          + <20>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA>补<EFBFBD><E8A1A5>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个主<E4B8AA><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <20><>Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD> <20><>TODO<44><4F><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD>表<EFBFBD>
       
  1.9) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解已<E8A7A3><E5B7B2><EFBFBD> BUG <20><>缺<EFBFBD><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD> SQL:2003 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>TODO
   <20>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD>解已<E8A7A3><E5B7B2>Bug<75>表<EFBFBD><E8A1A8>缺<EFBFBD><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * 该<><E8AFA5><EFBFBD>已<EFBFBD> <20><>TODO<44><4F><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD>表<EFBFBD>
     * 该<><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><E9A1BB><EFBFBD><EFBFBD> 为<><E4B8BA>
          + <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符<EFBFBD>SQL<51> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + 该<><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大大<E5A4A7><E5A4A7><EFBFBD> 代<> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>带<EFBFBD><E5B8A6><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD>微<EFBFBD><E5BEAE>足<EFBFBD><E8B6B3><EFBFBD>
          + 该<><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>
     * 该<><E8AFA5><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD> <20><>TODO<44><4F><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD>表<EFBFBD>
       
   PostgreSQL<51><4C>使<EFBFBD><E4BDBF>Bug<75><67>踪系<E8B8AA><E7B3BB><EFBFBD><EFBFBD><EFBFBD> 为<>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD>TODO任<4F><E4BBBB><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   对影<E5AFB9><E5BDB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<75><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>快<EFBFBD><E5BFAB>被修<E8A2AB><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CVS<56><53><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD>
   
  1.10) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><E6A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL<51><4C><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD>档<EFBFBD><E6A1A3>主<EFBFBD><E4B8BB><EFBFBD>详<EFBFBD><E8AFA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>页<EFBFBD><E9A1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /doc
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>注<EFBFBD><E6B3A8><EFBFBD><EFBFBD>为 $PGHOME/doc<6F><63><EFBFBD>
   <20><> <20><><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5>线<EFBFBD><E7BABF><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.PostgreSQL.org/d
   ocs<63>
   
   <20>两<EFBFBD><E4B8A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51>书<EFBFBD><E4B9A6>线<EFBFBD><E7BABF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://www.PostgreSQL.org/docs/awbook.html <20>
   http://www.commandprompt.com/ppbook/ <20> <20><><EFBFBD>大<EFBFBD><E5A4A7>PostgreSQL书<4C><E4B9A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>购
   买<><E4B9B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Korry Douglas<61><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://techdocs.PostgreSQL.org/techdocs/bookreviews.php<68><70>
   <20><><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD>PostgreSQL书<4C><E4B9A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>
   http://techdocs.PostgreSQL.org/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>
   
   客<><E5AEA2>端<EFBFBD><E7ABAF><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<71><6C><EFBFBD><EFBFBD><EFBFBD>以 \d
   <20><>头<EFBFBD><E5A4B4><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD><E7A4BA><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF> \?
   <20><>以<EFBFBD><E4BBA5>示<EFBFBD><E7A4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD>
   
   <20>们<EFBFBD> web <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD>
   
  1.11) <20><><EFBFBD>该<EFBFBD><E8AFA5> <20><><EFBFBD><EFBFBD><EFBFBD>  SQL <20><>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><E8BFB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD>书<EFBFBD><E4B9A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Teach Yourself SQL in
   21 Days, Second Edition<6F><6E><EFBFBD><EFBFBD>详<EFBFBD><E8AFA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://members.tripod.com/er4ebus/sql/index.htm<74><6D>
   <20>们<EFBFBD>许<EFBFBD><E8AEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>欢The Practical SQL Handbook<6F><6B> Bowman, Judith S.
   <20><><EFBFBD><EFBFBD><EFBFBD>Addison-Wesley<65><79><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>欢 The Complete Reference SQL,
   Groff <20><><EFBFBD><EFBFBD><EFBFBD>McGraw-Hill<6C><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC>
     * http://www.intermedia.net/support/sql/sqltut.shtm
     * http://sqlcourse.com.
     * http://www.w3schools.com/sql/default.asp
     * http://mysite.verizon.net/Graeme_Birchall/id1.html
       
  1.12)<29><><EFBFBD><EFBFBD><EFBFBD>交补<E4BAA4><E8A1A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   详<><E8AFA6> <20><><EFBFBD>人<EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (Developer's FAQ) <20>
   
  1.13)PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD>起<EFBFBD><E8B5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><>价软件<E8BDAF>好<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>价<EFBFBD> <20><>
   
   <20><><EFBFBD>
          PostgreSQL <20><><EFBFBD>大<EFBFBD><E5A4A7><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>
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          <20>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们没<E4BBAC><E6B2A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD>继<EFBFBD><E7BBA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD>
          <20><><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          
   <20><><EFBFBD><EFBFBD>
          PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类似<E7B1BB><E4BCBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>快
          <20><>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8>
          +/- 10%<25><><EFBFBD><EFBFBD><EFBFBD>
          
   <20><><EFBFBD> <20><>
          <20>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><E9A1BB><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>没<EFBFBD><E6B2A1><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><><EFBFBD><EFBFBD>认<EFBFBD><E8AEA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>缺<EFBFBD><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>稳<EFBFBD><E7A8B3>代<EFBFBD> <20><><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA> beta
          <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD>们<EFBFBD><E4BBAC>以<EFBFBD><E4BBA5><EFBFBD>稳<EFBFBD><E7A8B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><>产使<E4BAA7><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC>信<EFBFBD><E4BFA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          
   <20><><EFBFBD>
          <20>们<EFBFBD><E4BBAC><EFBFBD>件<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>常大<E5B8B8><E5A4A7><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以帮<E4BBA5><E5B8AE>解<EFBFBD><E8A7A3><EFBFBD>碰<EFBFBD>
          <20><>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解<EFBFBD><E8A7A3><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>软
          件<><E4BBB6>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解<EFBFBD><E8A7A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>群<EFBFBD><E7BEA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>触使PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><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>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD>
          <20><>1.7 <20><><EFBFBD><EFBFBD><EFBFBD>
          
   价<> <20>
          <20>们对任<E5AFB9><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD><E8B4B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><> <20><>以<EFBFBD><E4BBA5><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>产<EFBFBD><E4BAA7><EFBFBD> <20><><EFBFBD>们<EFBFBD>代<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20>声<EFBFBD><E5A3B0>声<EFBFBD><E5A3B0> BSD<53><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD>
     _________________________________________________________________
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  2.1) <20>们<EFBFBD><E4BBAC>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51>交<EFBFBD><E4BAA4><EFBFBD>
  
   PostgreSQL(缺<><E7BCBA><EFBFBD><EFBFBD>)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>项<EFBFBD><E9A1B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD><E8BDBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>项<EFBFBD><E9A1B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD>
   <20><><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>语
   <20><><EFBFBD><EFBFBD>PHP<48><50><EFBFBD>访<EFBFBD><E8AEBF>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Perl<72>TCL<43>Python以<6E><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://gborg.postgresql.org<72><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Drivers/Interfaces<65><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   并<><E5B9B6><EFBFBD><EFBFBD><EFBFBD>Internet<65><74>容<EFBFBD><E5AEB9>索<EFBFBD><E7B4A2><EFBFBD>
   
  2.2) <20><><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD>以<EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD> Web 页<><E9A1B5><EFBFBD><EFBFBD>
  
   <20><>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.webreview.com<6F>
   
   对<><E5AFB9> Web <20><><EFBFBD><EFBFBD>PHP <20><><EFBFBD><EFBFBD>个<EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.php.net/<2F>
   
   对<><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD> Perl <20><><EFBFBD><EFBFBD><EFBFBD> 使<><E4BDBF>CGI.pm<70>DBD::Pg <20> mod_perl <20>
   
  2.3)PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD>形<EFBFBD><E5BDA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><E4BABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51>GUI<55><49>形工<E5BDA2><E5B7A5>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD>
   PostgreSQL社<4C><E7A4BE><EFBFBD>档<EFBFBD><E6A1A3><EFBFBD>个详<E4B8AA><E8AFA6><EFBFBD><EFBFBD>表<EFBFBD>
     _________________________________________________________________
   
系<EFBFBD><EFBFBD>管<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  3.1)<29><><EFBFBD> <20><><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD> /usr/local/pgsql 以<><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure <20><><EFBFBD> <20><> --prefix <20>项<EFBFBD>
   
  3.2) <20><><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>
  
   缺<><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD>许<EFBFBD><E8AEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> unix <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>TCP/IP<49><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD>件postgresql.conf中
   <20>listen_addresses<65><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD>件$PGDATA/pg_hba.conf<6E><66><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> host-based
   <20><><EFBFBD>身份认<E4BBBD><E8AEA4><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  3.3) <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD>个主<E4B8AA><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <20><>主<EFBFBD><E4B8BB><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD>:
          
          + <20>建索<E5BBBA><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>
          + 使<><E4BDBF>COPY<50><59><EFBFBD><EFBFBD>代<EFBFBD><E4BBA3><EFBFBD><EFBFBD>个Insert<72><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <20><><EFBFBD><EFBFBD>个SQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD>交<EFBFBD><E4BAA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <20><><EFBFBD><EFBFBD>个索<E4B8AA><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>CLUSTER<45><52>
          + <20><><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>LIMIT<49><54>
          + 使<><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>Prepared Query)<29><>
          + 使<><E4BDBF>ANALYZE以<45><E4BBA5><EFBFBD>精确<E7B2BE><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1>
          + <20><><EFBFBD>使<EFBFBD><E4BDBF> VACUUM <20> pg_autovacuum
          + <20><><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建索<E5BBBA><E7B4A2><EFBFBD><EFBFBD>
            
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置
          <20>置<EFBFBD>件postgres.conf中
          <20><><EFBFBD><EFBFBD><EFBFBD>设置<E8AEBE><E7BDAE><EFBFBD><EFBFBD>影<EFBFBD><E5BDB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          管<><E7AEA1><EFBFBD><EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD><E7BDAE>
          <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解<EFBFBD><E8A7A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.varlena.com/varlena/GeneralBits/Tid
          bits/annotated_conf_e.html <20>
          http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html<6D>
          
   硬件<E7A1AC><E4BBB6><EFBFBD><EFBFBD>
          计<><E8AEA1><EFBFBD><EFBFBD>硬件对<E4BBB6><E5AFB9><EFBFBD><EFBFBD><EFBFBD>影<EFBFBD><E5BDB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          http://candle.pha.pa.us/main/writings/pgsql/hw_performance/inde
          x.html <20> http://www.powerpostgresql.com/PerfList/<2F>
          
  3.4)PostgreSQL<51><4C><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>类似 log_*
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD><E7BDAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><E5B7A5>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>
   
  3.5) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Sorry, too many
  clients<74><73>已<EFBFBD>太<EFBFBD><E5A4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><>表示<E8A1A8><E7A4BA> 已达<E5B7B2><E8BEBE>缺<EFBFBD>100个并<E4B8AA><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE>postgres
   ql.conf<6E>件<EFBFBD><E4BBB6><EFBFBD>max_connections<6E><73><EFBFBD><EFBFBD>
   <20><><EFBFBD> postmaster<65><72><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><E4BFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>postmaster<65>
   
  3.6)PostgreSQL<51><4C>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容 <20><>
  
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9>次<EFBFBD><E6ACA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级主<E7BAA7><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug修<67><E4BFAE>工<EFBFBD><E5B7A5><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
   7.4.8 <20>级<EFBFBD><E7BAA7> 7.4.9 <20><><EFBFBD><EFBFBD><EFBFBD> dump <20> restore<72><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<E8BDAF><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><E8AFA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>使<EFBFBD><E4BDBF><EFBFBD>主<EFBFBD><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>尽快<E5B0BD><E5BFAB>
   <20><><EFBFBD>尽管<E5B0BD><E7AEA1>次<EFBFBD>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设计<E8AEBE><E8AEA1><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>Bug<75><67><EFBFBD>代<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL社<4C><E7A4BE>认为<E8AEA4><E4B8BA><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><E7BAA7>
   
   主<><E4B8BB><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.3 <20><> 7.4<EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD>修<EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>们<EFBFBD><E4BBAC>维<EFBFBD><E7BBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>导<EFBFBD><E5AFBC><EFBFBD><EFBFBD>dump<6D><70>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>导<EFBFBD><E5AFBC><EFBFBD><EFBFBD>reload<61><64>对主<E5AFB9><E4B8BB><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><E7BAA7><EFBFBD><EFBFBD>须<EFBFBD><E9A1BB>
   
  3.7)(使<><E4BDBF>PostgreSQL)<29><><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD>硬件 <20><>
  
   <20><><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD>硬件大<E4BBB6><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD>人们<E4BABA><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD>硬件<E7A1AC>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ECC RAM<41><4D>带<EFBFBD><E5B8A6><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SCSI
   <20><>硬<EFBFBD><E7A1AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>质<EFBFBD>主<EFBFBD><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>便<EFBFBD><E4BEBF>货<EFBFBD><E8B4A7><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <20> <20><><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><E4BBBB>硬件<E7A1AC><E4BBB6><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9> <20>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 就<><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 究<><E7A9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>硬件<E7A1AC><E4BBB6>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD>件<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 硬件<E7A1AC>置<EFBFBD><E7BDAE><EFBFBD>价<EFBFBD><E4BBB7><EFBFBD>讨论<E8AEA8>
     _________________________________________________________________
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  4.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD>头<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询中
   <20><><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>以使<E4BBA5><E4BDBF>LIMIT<49><54><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个索<E4B8AA><E7B4A2><EFBFBD><EFBFBD> ORDER BY中
   <20><><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD> <20><>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><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>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD>
   <20>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>使<EFBFBD><E4BDBF>游<EFBFBD> (cursor)<29>FETCH<43><48><EFBFBD><EFBFBD>
   
   <20><>使<EFBFBD><E4BDBF>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD>
      SELECT  cols
      FROM tab
      ORDER BY random()
      LIMIT 1 ;

  4.2)
  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<71><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD>令并<E4BBA4><E5B9B6>示<EFBFBD><E7A4BA>们
  <20><>
  
   <20><>psql<71><6C>使<EFBFBD><E4BDBF> \dt <20><>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD>示<EFBFBD><E7A4BA><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解psql中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD>表<EFBFBD><E8A1A8>使<EFBFBD><E4BDBF>\? <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>以<EFBFBD>读 psql <20><><EFBFBD>代<EFBFBD>
   <20>件pgsql/src/bin/psql/describe.c<><63><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA>psql<71><6C><EFBFBD> <20><>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL
   <20><>令<EFBFBD><E4BBA4><EFBFBD> <20><><EFBFBD><EFBFBD>以带 -E <20>项<EFBFBD><E9A1B9><EFBFBD><EFBFBD> psql<71><6C> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>psql中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD>SQL<51><4C>询语
   <20><><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>容SQL<51>INFORMATION SCHEMA<4D><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD>
   
   <20><>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以pg_ <20>头<EFBFBD>系<EFBFBD><E7B3BB>表<EFBFBD><E8A1A8><EFBFBD>述<EFBFBD><E8BFB0>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   使<><E4BDBF> psql -l <20>令<EFBFBD><E4BBA4>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   pgsql/src/tutorial/syscat.source<63>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD>举<EFBFBD><E4B8BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>表<EFBFBD><E8A1A8>
   <20><><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD>SELECT<43><54><EFBFBD><EFBFBD><EFBFBD>
   
  4.3) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD>
  
   <20><>8.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> ALTER TABLE ALTER
   COLUMN TYPE <20>
   
   <20><>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD> <20><><EFBFBD><EFBFBD>
   BEGIN;
    ALTER TABLE tab ADD COLUMN new_col new_data_type;
    UPDATE tab SET new_col = CAST(old_col AS new_data_type);
    ALTER TABLE tab DROP COLUMN old_col;
    COMMIT;

   <20><> <20><><EFBFBD><EFBFBD><EFBFBD>以使<E4BBA5><E4BDBF>VACUUM FULL tab <20>令<EFBFBD><E4BBA4>使系<E4BDBF><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD>
   
  4.4) <20><><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD>个表<E4B8AA><E8A1A8><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
     <20>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大尺寸<E5B0BA><E5AFB8>   <20> <20><><EFBFBD><EFBFBD><EFBFBD>已<EFBFBD><E5B7B2><EFBFBD><EFBFBD> 32TB <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     <20>个表<E4B8AA><E8A1A8>大尺寸<E5B0BA><E5AFB8>     32 TB
     <20><><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD>大尺寸<E5B0BA><E5AFB8>   1.6 TB
     <20><>个<EFBFBD>段<EFBFBD><E6AEB5>大尺寸?    1 GB
     <20><>个表<E4B8AA><E8A1A8>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>      <20> <20><><EFBFBD>
     <20><>个表<E4B8AA><E8A1A8>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD>       250-1600 <20><><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     <20><>个表<E4B8AA><E8A1A8><EFBFBD>大索<E5A4A7><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>没<EFBFBD><E6B2A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/交<><E4BAA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>约<EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><E8BFB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大影<E5A4A7><E5BDB1>
   
   <20>表<EFBFBD><E8A1A8>大大<E5A4A7><E5A4A7> 32 TB
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>对<EFBFBD>个<EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD>大表<E5A4A7><E8A1A8><EFBFBD><EFBFBD>个 1 GB <20><>件<EFBFBD><E4BBB6>
   <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>件系<E4BBB6><E7B3BB>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD>缺<EFBFBD><E7BCBA><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32K <20><><EFBFBD>大<EFBFBD><E5A4A7>表大<E8A1A8><E5A4A7><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
   
   <20><><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对大<E5AFB9><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2000<30><30>
   <20><><EFBFBD><EFBFBD>建索<E5BBBA><E7B4A2><EFBFBD>幸<EFBFBD><E5B9B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD>MD5<44><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   并<><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>许对<E8AEB8><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>
   
  4.5) <20><><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD>
  
   <20><>个 Postgres <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD> <20><><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6>身大<E8BAAB><E5A4A7>5<EFBFBD><35><EFBFBD><EFBFBD>
   <20>空<EFBFBD><E7A9BA><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设<EFBFBD><E8AEBE><EFBFBD>个 100,000 <20><><EFBFBD><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD>述<EFBFBD>
   <20>设<EFBFBD><E8AEBE><EFBFBD>串<EFBFBD>平<EFBFBD><E5B9B3><EFBFBD>度为20<32><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD> <20><> 2.8 MB<4D><42><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件大约<E5A4A7><E7BAA6> 6.4 MB:
     28 <20><>: <20><><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD><E5A4B4>大约<E5A4A7><E7BAA6><EFBFBD><EFBFBD>
     24 <20><>: <20><>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD>段
   +  4 <20><>: 页<><E9A1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   ----------------------------------------
     56 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   PostgreSQL <20><><EFBFBD><EFBFBD>页<EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> 8192 <20><> (8 KB)<29><><EFBFBD><EFBFBD><EFBFBD>

   8192 <20><><EFBFBD><EFBFBD>页
   -------------------   =  146 <20><>/<2F><><EFBFBD><EFBFBD>页<EFBFBD><E9A1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     56 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   100000 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   --------------------  =  685 <20><><EFBFBD><EFBFBD>页<EFBFBD><E9A1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
      146 <20><>/<2F><><EFBFBD><EFBFBD>页

   685 <20><><EFBFBD><EFBFBD>页 * 8192 <20><>/页  = 5,611,520 <20><><EFBFBD><EFBFBD>5.6 MB<4D><42>

   索<><E7B4A2><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>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD>被索<E8A2AB><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>
   <20><><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD>
   
   空<><E7A9BA>NULL<4C><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD>
   
  4.6) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询没<E8AFA2><E6B2A1><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>
  
   并<><E5B9B6><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD>
   询<><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD> 为索<E4B8BA><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><E8B5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>读<EFBFBD>表<EFBFBD><E8A1A8>顺<EFBFBD><E9A1BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>PostgreSQL<51><4C>须<EFBFBD><E9A1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD>以使<E4BBA5>
   <20> VACUUM ANALYZE<5A><45><EFBFBD> ANALYZE <20><><EFBFBD><EFBFBD><EFBFBD> 使<><E4BDBF><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD>
   <20><>计<EFBFBD><E8AEA1>对确<E5AFB9><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>顺<EFBFBD><E9A1BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   索<><E7B4A2><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9>个大表<E5A4A7><E8A1A8><EFBFBD>次顺<E6ACA1><E9A1BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>次<EFBFBD><E6ACA1><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>快<EFBFBD><E5BFAB><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIMIT <20> ORDER BY
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起使<E8B5B7><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD> 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD> 确信PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>顺<EFBFBD><E9A1BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD> <20><>以使<E4BBA5><E4BDBF>SET
   enable_seqscan TO 'off'<27>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD>顺<EFBFBD><E9A1BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>次<EFBFBD><E6ACA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD> 就<><E5B0B1>以<EFBFBD><E4BBA5><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD>个索<E4B8AA><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD>快<EFBFBD><E5BFAB><EFBFBD><EFBFBD><EFBFBD>
   
   <20><>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIKE <20> ~ <20><><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD>
     * <20>符串<E7ACA6><E4B8B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><E9A1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符串<E7ACA6><E4B8B2><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1>说<EFBFBD><E8AFB4>
          + LIKE 模<><E6A8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以 % <20>头<EFBFBD>
          + ~ <20><><EFBFBD><EFBFBD><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD>模<EFBFBD><E6A8A1><EFBFBD><EFBFBD>须以 ^ <20>头<EFBFBD>
     * <20>符串<E7ACA6><E4B8B2><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>符<EFBFBD>模<EFBFBD><E6A8A1>类<EFBFBD>头<EFBFBD><E5A4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [a-e]<5D>
     * 大<><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ILIKE <20> ~* <20><><EFBFBD>使<EFBFBD><E4BDBF>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5> 4.8
       <20><>述<EFBFBD>表达<E8A1A8><E8BEBE>索<EFBFBD><E7B4A2><EFBFBD>
     * <20><><EFBFBD> initdb <20><><EFBFBD><EFBFBD>须<EFBFBD><E9A1BB><EFBFBD>缺<EFBFBD><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设置 C
       locale<6C><65><EFBFBD> 为系<E4B8BA><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C locale<6C><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>大<EFBFBD>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
       <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>以<EFBFBD>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD>text_pattern_ops索<73><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>LIKE
       <20>索<EFBFBD><E7B4A2><EFBFBD>
       
   <20><>8.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD>被<EFBFBD><E8A2AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>对int2,int8<74><38><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD>
   
  4.7) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>估<EFBFBD><E4BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>
  
   <20><> EXPLAIN <20><>页<EFBFBD>
   
  4.8) <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD>索<EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
  <20><>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD>符 ~ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ~* <20><><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
   <20><>表达<E8A1A8><E8BEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD> LIKE <20><><EFBFBD><EFBFBD>为 ILIKE<4B>
   
   大<><E5A4A7><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD>
    SELECT *
    FROM tab
    WHERE lower(col) = 'abc';

   <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD> <20><>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD>表达<E8A1A8><E8BEBE><EFBFBD>
   <20><><EFBFBD><EFBFBD>:
    CREATE INDEX tabindex ON tab (lower(col));

   <20><><EFBFBD><EFBFBD><EFBFBD>述索<E8BFB0><E7B4A2><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><E5BBBA><EFBFBD> <20><>UNIQUE约<45><E7BAA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD>段<EFBFBD><E6AEB5>身<EFBFBD>容<EFBFBD><E5AEB9>以<EFBFBD><E4BBA5>
   <20><>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>UNIQUE约<45><E7BAA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<E4BBA5><E4BDBF>CHECK约<4B><E7BAA6><EFBFBD>件<EFBFBD><E4BBB6><EFBFBD>触<EFBFBD><E8A7A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.9) <20><><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD>为 NULL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>论<EFBFBD><E8AEBA><EFBFBD>
  段<><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <20><><EFBFBD><EFBFBD>
  
   <20><> IS NULL <20> IS NOT NULL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SELECT *
   FROM tab
   WHERE col IS NULL;

   为<><E4B8BA><EFBFBD><EFBFBD>对<EFBFBD><E5AFB9> NULL<4C>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY <20><>件<EFBFBD><E4BBB6>使<EFBFBD><E4BDBF> IS NULL<4C> IS NOT
   NULL 修饰符<E9A5B0><E7ACA6><EFBFBD><EFBFBD>件为<E4BBB6> true <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件为<E4BBB6>false <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   就<><E5B0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <20>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SELECT *
   FROM tab
   ORDER BY (col IS NOT NULL)

  4.10) <20><><EFBFBD><EFBFBD>符类<E7ACA6><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   类<> <20><><EFBFBD><EFBFBD>称 说<>
   VARCHAR(n) varchar <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   符串<E7ACA6><E4B8B2><EFBFBD><EFBFBD>足<EFBFBD><E8B6B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>补<EFBFBD><E8A1A5>
   CHAR(n) bpchar <20><><EFBFBD><EFBFBD><EFBFBD>符串<E7ACA6><E4B8B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>足<EFBFBD><E8B6B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD>以空<E4BBA5> <20>补<EFBFBD><E8A1A5>
   TEXT text 没<><E6B2A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD>
   BYTEA bytea <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>NULL<4C>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><E8AEB8><EFBFBD>
   "char" char <20>个<EFBFBD>符
   
   <20><>系<EFBFBD><E7B3BB>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<E8AFAF><E4BFA1><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称<EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD>"varlena"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1>说<EFBFBD><E8AFB4><EFBFBD><EFBFBD>头<EFBFBD><E5A4B4>个<EFBFBD><E4B8AA>
   <20><><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD>声<EFBFBD><E5A3B0>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以被<E4BBA5>缩<EFBFBD><E7BCA9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>
   <20><><EFBFBD><EFBFBD>空<EFBFBD><E7A9BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   VARCHAR(n) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><E5A4A7>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD>符串<E7ACA6><E4B8B2><EFBFBD>好<EFBFBD><E5A5BD> TEXT <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>大<EFBFBD><E5A4A7>达 1G左<47><E5B7A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><E5BAA6>符串<E7ACA6>
   
   CHAR(n) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><E5BAA6><EFBFBD><EFBFBD><EFBFBD>符串<E7ACA6> CHAR(n)<29><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   段<><E6AEB5>度以空<E4BBA5> <20>补足<E8A1A5><E8B6B3><EFBFBD><EFBFBD>足<EFBFBD><E8B6B3>段<EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD> <20> VARCHAR(n) <20><><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD> BYTEA <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>尤<EFBFBD><E5B0A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD>差<EFBFBD><E5B7AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.11.1) <20><><EFBFBD> <20><>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5>
  
   PostgreSQL <20><><EFBFBD> SERIAL <20><><EFBFBD><EFBFBD>类<EFBFBD><E7B1BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   段<><E6AEB5><EFBFBD><EFBFBD>为SERIAL<41><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><E5BBBA>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   CREATE TABLE person (
      id   SERIAL,
      name TEXT
   );

   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>转<EFBFBD><E8BDAC>为以<E4B8BA><E4BBA5>SQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   CREATE SEQUENCE person_id_seq;
   CREATE TABLE person (
      id   INT4 NOT NULL DEFAULT nextval('person_id_seq'),
      name TEXT
   );

   <20><> create_sequence <20><>页<EFBFBD><E9A1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><E4BFA1><EFBFBD>
   
  4.11.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> nextval() <20><><EFBFBD><EFBFBD><EFBFBD>对象<E5AFB9><E8B1A1><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个 SERIAL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>精确<E7B2BE><E7A1AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF> 4.11.1 <20><><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>伪<EFBFBD> <20><><EFBFBD> <20><>述<EFBFBD><E8BFB0>
   new_id = execute("SELECT nextval('person_id_seq')");
   execute("INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal')");

   <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> new_id <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD> person
   表<><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 注<><E6B3A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD> SEQUENCE 对象<E5AFB9><E8B1A1>称<EFBFBD><E7A7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <table>_<serialcolumn>_seq<65><71> <20><><EFBFBD> table <20> serialcolumn
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>表<EFBFBD><E8A1A8>称<EFBFBD><E7A7B0><EFBFBD> <20> SERIAL <20>段<EFBFBD><E6AEB5>称<EFBFBD>
   
   类似<E7B1BB><E4BCBC><EFBFBD><EFBFBD><EFBFBD> SERIAL 对象缺<E8B1A1><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD> currval() <20><>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SERIAL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   execute("INSERT INTO person (name) VALUES ('Blaise Pascal')");
   new_id = execute("SELECT currval('person_id_seq')");

  4.11.3) <20><><EFBFBD>使<EFBFBD><E4BDBF> currval() <20><>导<EFBFBD><E5AFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD>currval() <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>次<EFBFBD><E6ACA1><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>
   
  4.11.4) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  <20><><EFBFBD><EFBFBD>
  
   为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>就<EFBFBD><E5B0B1>导<EFBFBD><E5AFBC><EFBFBD><EFBFBD>常中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.12) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID <20><>
  
   PostgreSQL
   <20><>建<EFBFBD><E5BBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD>OID<49><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建表<E5BBBA><E8A1A8>使<EFBFBD><E4BDBF>WITHOUT
   OIDS<44>项<EFBFBD> OID<49>建<EFBFBD><E5BBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个4<E4B8AA><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>40亿<30><E4BABF><EFBFBD><EFBFBD>溢<EFBFBD><E6BAA2><EFBFBD><EFBFBD> OID<49><44>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>表<EFBFBD>使<EFBFBD><E4BDBF> OID <20><>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD>建<EFBFBD><E5BBBA><EFBFBD>系<EFBFBD>
   
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><E5A5BD>使<EFBFBD><E4BDBF>SERIAl<41><6C>代<EFBFBD><E4BBA3>OID
   <20> 为SERIAL<41><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个表中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><E5B0B1>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>溢<EFBFBD><E6BAA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SERIAL8<4C><38><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8<EFBFBD><38><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   CTID <20><><EFBFBD><EFBFBD><EFBFBD> <20><>带<EFBFBD><E5B8A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>移<EFBFBD><E7A7BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID
   <20><>记<EFBFBD><E8AEB0>被<EFBFBD><E8A2AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD><E8BDBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><E7B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD>们<EFBFBD><E4BBAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.13) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<E8AFAF><E4BFA1><EFBFBD>ERROR: Memory exhausted in AllocSetAlloc()<29><><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>对<EFBFBD><E5AFB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   postmaster <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><E4BBA4>
   ulimit -d 262144
   limit datasize 256m

   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>
   shell<6C><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5><EFBFBD>设<EFBFBD><E8AEBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20> <20><><EFBFBD>许<EFBFBD><E8AEB8>让<EFBFBD><E8AEA9>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><E4BBA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><E4BBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SQL客<4C><E5AEA2>端<EFBFBD><E7ABAF><EFBFBD> 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>太<EFBFBD><E5A4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><E8AFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   客<><E5AEA2>端<EFBFBD><E7ABAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><E8BFB0>令<EFBFBD>
   
  4.14) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><> psql <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SELECT version();<3B>令<EFBFBD>
   
  4.15) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><E5BBBA>个缺<E4B8AA><E7BCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><E6AEB5>
  
   使<><E4BDBF> CURRENT_TIMESTAMP<4D><50>
   CREATE TABLE test (x int, modtime TIMESTAMP DEFAULT CURRENT_TIMESTAMP );

  4.16) <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> outer join <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <20><><EFBFBD><EFBFBD> <20><> SQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>两个<E4B8A4><E4B8AA><EFBFBD><EFBFBD><EFBFBD>
   SELECT *
   FROM t1 LEFT OUTER JOIN t2 ON (t1.col = t2.col);

   <20><><EFBFBD>
   SELECT *
   FROM t1 LEFT OUTER JOIN t2 USING (col);

   <20><>两个<E4B8A4>价<EFBFBD><E4BBB7><EFBFBD>询<EFBFBD><E8AFA2> t1.col <20> t2.col <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD><EFBFBD> t1 中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <20><>没<EFBFBD><E6B2A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>[<5B><>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>RIGHT OUTER
   JOIN<49><4E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FULL OUTER JOIN<49><4E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t1 <20> t2
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> OUTER <20><>左[<5B><>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD><EFBFBD>中
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被称为<E7A7B0><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>INNER JOIN<49><4E><EFBFBD>
   
  4.17) <20><><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>
  
   没<><E6B2A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20> 为PostgreSQL<51><4C><EFBFBD> 载<><E8BDBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><E7B3BB>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD> <20><>
   <20>跨<EFBFBD><E8B7A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <20><> <20><><EFBFBD><EFBFBD>模<EFBFBD>contrib/dblink<6E>许<EFBFBD><E8AEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>跨<EFBFBD><E8B7A8><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><E5AEA2>端<EFBFBD>并<EFBFBD><E5B9B6><EFBFBD><EFBFBD>
   
  4.18) <20><><EFBFBD><EFBFBD>让<EFBFBD><E8AEA9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><E8AEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><E8AFA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://techdocs.postgresql.org/guides/SetReturningFunctions
   
  4.19) 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF>PL/PgSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><E4B8B4>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<E8AFAF><E4BFA1><EFBFBD>relation with
  OID ##### does not exist<73><74><EFBFBD>
  
   PL/PgSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>带<EFBFBD><E5B8A6><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个
   PL/PgSQL
   <20><><EFBFBD><EFBFBD>访<EFBFBD><E8AEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个临<E4B8AA><E4B8B4>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD>该表被<E8A1A8> <20><>并<EFBFBD>建<EFBFBD><E5BBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>次<EFBFBD><E6ACA1><EFBFBD><EFBFBD>该<EFBFBD><E8AFA5><EFBFBD><EFBFBD><EFBFBD>
   <20>失败<E5A4B1><E8B4A5> <20> 为<><E4B8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><E5AEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><E4B8B4>表<EFBFBD>解<EFBFBD><E8A7A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PL/PgSQL
   <20><><EFBFBD><EFBFBD>EXECUTE
   对临<E5AFB9><E4B8B4>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD>访<EFBFBD><E8AEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD><E8A2AB><EFBFBD>解<EFBFBD><E8A7A3>
   
  4.20) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
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   主/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><E8AEB8>个主<E4B8AA><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>读/<2F><><EFBFBD><EFBFBD>请<EFBFBD><E8AFB7><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><E4B8AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>/SELECT<43><54>询<EFBFBD><E8AFA2><EFBFBD>请<EFBFBD><E8AFB7> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD>主/<2F><>PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   Slony-I <20>
   
   <20><>个主<E4B8AA><E4B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><E8AEB8>读/<2F><><EFBFBD><EFBFBD>请<EFBFBD><E8AFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><E8AEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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   <20>好<EFBFBD><E5A5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>费<EFBFBD><E8B4B9>载<EFBFBD>
   
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  4.21) 为<><E4B8BA><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD>表<EFBFBD><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><E4B8BA>大<EFBFBD><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <20>常<EFBFBD><E5B8B8><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>建表<E5BBBA><E8A1A8>对表<E5AFB9><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称为<E7A7B0> <20><>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 大<><E5A4A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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     * <20><><EFBFBD>建表<E5BBBA><E8A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>符使<E7ACA6><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><E8B5B7><EFBFBD>
     * <20><><EFBFBD> <20><>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * <20><>为<EFBFBD><E4B8BA><EFBFBD><EFBFBD>已<EFBFBD><E5B7B2><EFBFBD><EFBFBD><EFBFBD> <20><>符<EFBFBD><E7ACA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><E8AFA2>使<EFBFBD><E4BDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>符<EFBFBD><E7ACA6>起<EFBFBD><E8B5B7><EFBFBD>