postgres/doc/FAQ_chinese_simp

                          PostgreSQL 常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FAQ<EFBFBD><EFBFBD>
                                       
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2007 年 1 <EFBFBD> 30 <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD> 17:37:01 EST
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2007 年 2 <EFBFBD> 1 <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> 12:55:04 CST
   
   <EFBFBD><EFBFBD><EFBFBD>维<EFBFBD><EFBFBD>人<EFBFBD><EFBFBD><EFBFBD>Bruce Momjian (pgman@candle.pha.pa.us)
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>维<EFBFBD><EFBFBD>人<EFBFBD><EFBFBD><EFBFBD>Daojing.Zhou<EFBFBD><EFBFBD>doudou586@gmail.com<EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>
   http://www.postgresql.org/files/documentation/faqs/FAQ.html<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>平<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.postgresql.org/docs/faq/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>
     _________________________________________________________________
   
常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   1.1)PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.2)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>PostgreSQL <EFBFBD><EFBFBD>
   1.3)PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.4)PostgreSQL<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>平<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.5)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD>
   1.6)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.7)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.8)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><EFBFBD>个BUG<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.9)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解已<EFBFBD><EFBFBD><EFBFBD> BUG <EFBFBD><EFBFBD>缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.10)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.11)<EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  SQL <EFBFBD><EFBFBD>
   1.12)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交补<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.13)PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   1.14)PostgreSQL <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>家<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   2.1)<EFBFBD>们<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD>交<EFBFBD><EFBFBD><EFBFBD>
   2.2)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD> Web 页<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   2.3)PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>形<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
系<EFBFBD><EFBFBD>管<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   3.1)<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD> /usr/local/pgsql 以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.2)<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>
   3.3)<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.4)PostgreSQL <EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.5)为<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>Sorry, too many clients<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   3.6)PostgreSQL<EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD>
   3.7)(使<EFBFBD><EFBFBD>PostgreSQL)<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件 <EFBFBD><EFBFBD>
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   4.1) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.2)
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD>令并<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD>
   4.3) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD>
   4.4) <EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.5) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.6) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询没<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.7) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>估<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD>
   4.8) <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.9) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD>为
   NULL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>论<EFBFBD><EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>NULL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.10) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>符类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.11.1) <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD>
   4.11.2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.11.3) <EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> currval() <EFBFBD><EFBFBD>导<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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.12) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID <EFBFBD><EFBFBD>
   4.13) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<EFBFBD><EFBFBD><EFBFBD>ERROR: Memory exhausted in
   AllocSetAlloc()<EFBFBD><EFBFBD><EFBFBD>
   4.14) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.15) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><EFBFBD>个缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD>
   4.16) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>outer join<EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>
   4.17) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>
   4.18) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>让<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   4.19) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>PL/PgSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<EFBFBD><EFBFBD><EFBFBD>relation
   with OID ##### does not exist<EFBFBD><EFBFBD><EFBFBD>
   4.20) <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><EFBFBD>
   4.21) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     _________________________________________________________________
   
常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  1.1)PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL 读<EFBFBD><EFBFBD> Post-Gres-Q-L<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称为Postgres
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载声<EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD> MP3 <EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD>
   
   PostgreSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<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>代 DBMS 系<EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>强<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>代<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   PostgreSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>主<EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个社<EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>项<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被任<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>请<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FAQ<EFBFBD><EFBFBD>
   http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html
   
  1.2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>寻<EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   央<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> 为<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>确<EFBFBD><EFBFBD><EFBFBD>个
   <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CVS管<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设<EFBFBD><EFBFBD>主<EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>对PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL项<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD>人<EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD>社<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD>订<EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>讨论
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>人<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD> (Developer's FAQ)
   <EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  1.3)PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>?
  
   PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>BSD<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>代<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 软件<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们追<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>责任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   须<EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD>声<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>使<EFBFBD><EFBFBD><EFBFBD>BSD<EFBFBD><EFBFBD>声<EFBFBD><EFBFBD>容<EFBFBD><EFBFBD>
   
   PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>管<EFBFBD>系<EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><EFBFBD>1996-2005<EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><EFBFBD>1994-1996
   <EFBFBD> <EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>Portions copyright (c) 1996-2005,PostgreSQL Global Development Group
   Portions Copyright (c) 1994-6 Regents of the University of
   California<EFBFBD><EFBFBD>
   
   <EFBFBD>许为任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD>费<EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD> 并<EFBFBD><EFBFBD><EFBFBD> 须<EFBFBD><EFBFBD>署<EFBFBD> <EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>产<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>声<EFBFBD><EFBFBD><EFBFBD><EFBFBD>段以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>两段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>Permission to use, copy, modify, and distribute this software and
   its documentation for any purpose, without fee, and without a written
   agreement is hereby granted, provided that the above copyright notice
   and this paragraph and the following two paragraphs appear in all
   copies.<EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD>导<EFBFBD><EFBFBD><EFBFBD>对任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<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>伴<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>失<EFBFBD>责任<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD> <EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>
   <EFBFBD>已<EFBFBD><EFBFBD>建议<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>失<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY
   PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
   DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS
   SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA
   HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<EFBFBD><EFBFBD>
   
   <EFBFBD> <EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<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><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>份软件<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>大<EFBFBD><EFBFBD>
   <EFBFBD>没<EFBFBD>责任<EFBFBD><EFBFBD><EFBFBD>维<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>强<EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
   INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
   PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
   CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
   UPDATES, ENHANCEMENTS, OR MODIFICATIONS.<EFBFBD><EFBFBD>
   
  1.4)PostgreSQL <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>平<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>说<EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对 UNIX <EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <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><EFBFBD><EFBFBD><EFBFBD><EFBFBD>平<EFBFBD><EFBFBD><EFBFBD>
   
   PostgreSQl<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>微软Windows-NT<EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Win2000
   SP4<EFBFBD><EFBFBD>WinXP <EFBFBD> Win2003<EFBFBD><EFBFBD>已<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://pgfoundry.org/projects/pginstaller<EFBFBD><EFBFBD>载<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>MSDOS<EFBFBD>Windows<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>Win95<EFBFBD><EFBFBD>Win98<EFBFBD><EFBFBD>WinMe<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Cygwin模<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个为Novell Netware 6<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://forge.novell.com<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为OS/2(eComStation)<EFBFBD><EFBFBD><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 <EFBFBD><EFBFBD>载<EFBFBD>
   
  1.5) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.postgresql.org/ftp/<EFBFBD><EFBFBD>载<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FTP<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   ftp://ftp.PostgreSQL.org/pub/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD>
   
  1.6) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8.2.1 <EFBFBD>
   
   <EFBFBD>们计<EFBFBD><EFBFBD><EFBFBD>年<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个主<EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  1.7) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL社<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表为<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>帮<EFBFBD><EFBFBD><EFBFBD><EFBFBD>订<EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表<EFBFBD>主
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://www.postgresql.org/community/lists/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>General <EFBFBD>
   Bug<EFBFBD><EFBFBD>件<EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   主<EFBFBD><EFBFBD><EFBFBD>IRC<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FreeNode(irc.freenode.net)<EFBFBD>#postgresql<EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<EFBFBD><EFBFBD>UNIX<EFBFBD><EFBFBD><EFBFBD><EFBFBD>irc<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> irc -c '#postgresql'
   "$USER" irc.freenode.net <EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IRC客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个PostgreSQL<EFBFBD>西<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(#postgersql-es)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   (#postgresql-fr)<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>EFNET<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个PostgreSQL<EFBFBD>交<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://techdocs.postgresql.org/companies.php<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>
   
  1.8) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><EFBFBD>个BUG<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>访<EFBFBD><EFBFBD>
   http://www.postgresql.org/support/submitbug<EFBFBD><EFBFBD>填<EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>访<EFBFBD><EFBFBD>ftp<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ftp://ftp.PostgreSQL.org/pub/
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>补<EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>Bug<EFBFBD>交表<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD>件<EFBFBD>表<EFBFBD>Bug<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>
     * <EFBFBD><EFBFBD>交<EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD> <EFBFBD>
     * <EFBFBD><EFBFBD>交<EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个已<EFBFBD><EFBFBD><EFBFBD>Bug并<EFBFBD><EFBFBD>已<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>TODO<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>
     * <EFBFBD><EFBFBD>交<EFBFBD>Bug已<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被修<EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD>交<EFBFBD>Bug已修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>补<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD>
     * 请<EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>
          + PostgreSQL<EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>踪<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD>交<EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>补<EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD> <EFBFBD><EFBFBD>TODO<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>
       
  1.9) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解已<EFBFBD><EFBFBD><EFBFBD> BUG <EFBFBD><EFBFBD>缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL:2003 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>TODO
   <EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>解已<EFBFBD><EFBFBD>Bug<EFBFBD>表<EFBFBD><EFBFBD>缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * 该<EFBFBD><EFBFBD><EFBFBD>已<EFBFBD> <EFBFBD><EFBFBD>TODO<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>
     * 该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 为<EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符<EFBFBD>SQL<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + 该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大大<EFBFBD><EFBFBD><EFBFBD> 代<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>带<EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD>微<EFBFBD><EFBFBD>足<EFBFBD><EFBFBD><EFBFBD>
          + 该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>
     * 该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD> <EFBFBD><EFBFBD>TODO<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>
       
   PostgreSQL<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD>踪系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 为<EFBFBD>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>TODO任<EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   对影<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>快<EFBFBD><EFBFBD>被修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CVS<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  1.10) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL<EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD>主<EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>页<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /doc
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>注<EFBFBD><EFBFBD><EFBFBD><EFBFBD>为 $PGHOME/doc<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>线<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.PostgreSQL.org/d
   ocs<EFBFBD>
   
   <EFBFBD>两<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD>书<EFBFBD><EFBFBD>线<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://www.PostgreSQL.org/docs/awbook.html <EFBFBD>
   http://www.commandprompt.com/ppbook/ <EFBFBD> <EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>PostgreSQL书<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>购
   买<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Korry Douglas<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://techdocs.PostgreSQL.org/techdocs/bookreviews.php<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL书<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>
   http://techdocs.PostgreSQL.org/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>
   
   客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以 \d
   <EFBFBD><EFBFBD>头<EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> \?
   <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>示<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD>
   
   <EFBFBD>们<EFBFBD> web <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>档<EFBFBD>
   
  1.11) <EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  SQL <EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>书<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Teach Yourself SQL in
   21 Days, Second Edition<EFBFBD><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://members.tripod.com/er4ebus/sql/index.htm<EFBFBD><EFBFBD>
   <EFBFBD>们<EFBFBD>许<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>欢The Practical SQL Handbook<EFBFBD><EFBFBD> Bowman, Judith S.
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Addison-Wesley<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>欢 The Complete Reference SQL,
   Groff <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>McGraw-Hill<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD>
     * 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)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>交补<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   详<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>人<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (Developer's FAQ) <EFBFBD>
   
  1.13)PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>价软件<EFBFBD>好<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>价<EFBFBD> <EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD>
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          <EFBFBD><EFBFBD>对<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>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD>
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          <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>产<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>们<EFBFBD>代<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <EFBFBD>声<EFBFBD><EFBFBD>声<EFBFBD><EFBFBD> BSD<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD>
          
  1.14) PostgreSQL<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>家<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>?
  
   PostgreSQL 8.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8.0<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>身<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD>
     _________________________________________________________________
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  2.1) <EFBFBD>们<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD>交<EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL(缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C<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>项<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>项<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>语
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>PHP<EFBFBD><EFBFBD><EFBFBD>访<EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Perl<EFBFBD>TCL<EFBFBD>Python以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://gborg.postgresql.org<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Drivers/Interfaces<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Internet<EFBFBD><EFBFBD>容<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
   
  2.2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD> Web 页<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.webreview.com<EFBFBD>
   
   对<EFBFBD><EFBFBD> Web <EFBFBD><EFBFBD><EFBFBD><EFBFBD>PHP <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.php.net/<EFBFBD>
   
   对<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>人<EFBFBD><EFBFBD><EFBFBD> Perl <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 使<EFBFBD><EFBFBD>CGI.pm<EFBFBD>DBD::Pg <EFBFBD> mod_perl <EFBFBD>
   
  2.3)PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>形<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>人<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD>GUI<EFBFBD><EFBFBD>形工<EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   PostgreSQL社<EFBFBD><EFBFBD><EFBFBD>档<EFBFBD><EFBFBD><EFBFBD>个详<EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>
     _________________________________________________________________
   
系<EFBFBD><EFBFBD>管<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  3.1)<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD> /usr/local/pgsql 以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> --prefix <EFBFBD>项<EFBFBD>
   
  3.2) <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>
  
   缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> unix <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>TCP/IP<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD>件postgresql.conf中
   <EFBFBD>listen_addresses<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD>件$PGDATA/pg_hba.conf<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> host-based
   <EFBFBD><EFBFBD><EFBFBD>身份认<EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>PostgreSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  3.3) <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD>个主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          <EFBFBD><EFBFBD>主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
          
          + <EFBFBD>建索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + 使<EFBFBD><EFBFBD>COPY<EFBFBD><EFBFBD><EFBFBD><EFBFBD>代<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个Insert<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个SQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD>交<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>CLUSTER<EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>LIMIT<EFBFBD><EFBFBD>
          + 使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>Prepared Query)<EFBFBD><EFBFBD>
          + 使<EFBFBD><EFBFBD>ANALYZE以<EFBFBD><EFBFBD><EFBFBD>精确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD>
          + <EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> VACUUM <EFBFBD> pg_autovacuum
          + <EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
            
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置
          <EFBFBD>置<EFBFBD>件postgres.conf中
          <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设置<EFBFBD><EFBFBD><EFBFBD><EFBFBD>影<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          管<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>置<EFBFBD><EFBFBD>
          <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.varlena.com/varlena/GeneralBits/Tid
          bits/annotated_conf_e.html <EFBFBD>
          http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html<EFBFBD>
          
   硬件<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件对<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>影<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
          http://candle.pha.pa.us/main/writings/pgsql/hw_performance/inde
          x.html <EFBFBD> http://www.powerpostgresql.com/PerfList/<EFBFBD>
          
  3.4)PostgreSQL<EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类似 log_*
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>置<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD>对<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  3.5) 为<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<EFBFBD><EFBFBD>已<EFBFBD>太<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>表示<EFBFBD><EFBFBD> 已达<EFBFBD><EFBFBD>缺<EFBFBD>100个并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD>postgres
   ql.conf<EFBFBD>件<EFBFBD><EFBFBD><EFBFBD>max_connections<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD> postmaster<EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>修<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>postmaster<EFBFBD>
   
  3.6)PostgreSQL<EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容 <EFBFBD><EFBFBD>
  
   PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD>次<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug修<EFBFBD><EFBFBD>工<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   7.4.8 <EFBFBD>级<EFBFBD><EFBFBD> 7.4.9 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> dump <EFBFBD> restore<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>软件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>使<EFBFBD><EFBFBD><EFBFBD>主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>尽快<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>尽管<EFBFBD><EFBFBD>次<EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Bug<EFBFBD><EFBFBD><EFBFBD>代<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL社<EFBFBD><EFBFBD>认为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><EFBFBD>
   
   主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.3 <EFBFBD><EFBFBD> 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> <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>们<EFBFBD><EFBFBD>维<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>导<EFBFBD><EFBFBD><EFBFBD><EFBFBD>dump<EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>导<EFBFBD><EFBFBD><EFBFBD><EFBFBD>reload<EFBFBD><EFBFBD>对主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>级<EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><EFBFBD>
   
  3.7)(使<EFBFBD><EFBFBD>PostgreSQL)<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件 <EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD>人们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件<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> ECC RAM<EFBFBD><EFBFBD>带<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SCSI
   <EFBFBD><EFBFBD>硬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>质<EFBFBD>主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>便<EFBFBD><EFBFBD>货<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>任<EFBFBD><EFBFBD>硬件<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD> <EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 究<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>硬件<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD><EFBFBD>件<EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 硬件<EFBFBD>置<EFBFBD><EFBFBD><EFBFBD>价<EFBFBD><EFBFBD><EFBFBD>讨论<EFBFBD>
     _________________________________________________________________
   
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

  4.1) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<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>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询中
   <EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>以使<EFBFBD><EFBFBD>LIMIT<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个索<EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY中
   <EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD> <EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<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>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD>
   <EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>游<EFBFBD> (cursor)<EFBFBD>FETCH<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
      SELECT  cols
      FROM tab
      ORDER BY random()
      LIMIT 1 ;

  4.2)
  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>psql<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD>令并<EFBFBD><EFBFBD>示<EFBFBD><EFBFBD>们
  <EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>psql<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> \dt <EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>解psql中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD>表<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>\? <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>读 psql <EFBFBD><EFBFBD><EFBFBD>代<EFBFBD>
   <EFBFBD>件pgsql/src/bin/psql/describe.c<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD>psql<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL
   <EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以带 -E <EFBFBD>项<EFBFBD><EFBFBD><EFBFBD><EFBFBD> psql<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>psql中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD>SQL<EFBFBD><EFBFBD>询语
   <EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>容SQL<EFBFBD>INFORMATION SCHEMA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以pg_ <EFBFBD>头<EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   使<EFBFBD><EFBFBD> psql -l <EFBFBD>令<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   pgsql/src/tutorial/syscat.source<EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>举<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD>SELECT<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.3) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>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 <EFBFBD>
   
   <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><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;

   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<EFBFBD><EFBFBD>VACUUM FULL tab <EFBFBD>令<EFBFBD><EFBFBD>使系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD>
   
  4.4) <EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个表<EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<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>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大尺寸<EFBFBD><EFBFBD>   <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>已<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32TB <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     <EFBFBD>个表<EFBFBD><EFBFBD>大尺寸<EFBFBD><EFBFBD>     32 TB
     <EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD>大尺寸<EFBFBD><EFBFBD>   1.6 TB
     <EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD>大尺寸?    1 GB
     <EFBFBD><EFBFBD>个表<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>      <EFBFBD> <EFBFBD><EFBFBD><EFBFBD>
     <EFBFBD><EFBFBD>个表<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>       250-1600 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     <EFBFBD><EFBFBD>个表<EFBFBD><EFBFBD><EFBFBD>大索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>没<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>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/交<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>约<EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大影<EFBFBD><EFBFBD>
   
   <EFBFBD>表<EFBFBD><EFBFBD>大大<EFBFBD><EFBFBD> 32 TB
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>对<EFBFBD>个<EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个 1 GB <EFBFBD><EFBFBD>件<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>件系<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD>缺<EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32K <EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>表大<EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2000<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>建索<EFBFBD><EFBFBD><EFBFBD>幸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD>MD5<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>许对<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>
   
  4.5) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD>个 Postgres <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD>身大<EFBFBD><EFBFBD>5<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>空<EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设<EFBFBD><EFBFBD><EFBFBD>个 100,000 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD>
   <EFBFBD>设<EFBFBD><EFBFBD><EFBFBD>串<EFBFBD>平<EFBFBD><EFBFBD><EFBFBD>度为20<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件<EFBFBD> <EFBFBD><EFBFBD> 2.8 MB<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件大约<EFBFBD><EFBFBD> 6.4 MB:
     28 <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD><EFBFBD>大约<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     24 <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段
   +  4 <EFBFBD><EFBFBD>: 页<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   ----------------------------------------
     56 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD>页<EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8192 <EFBFBD><EFBFBD> (8 KB)<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   8192 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>页
   -------------------   =  146 <EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>页<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     56 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   100000 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   --------------------  =  685 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>页<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
      146 <EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>页

   685 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>页 * 8192 <EFBFBD><EFBFBD>/页  = 5,611,520 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>5.6 MB<EFBFBD><EFBFBD>

   索<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>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD>
   
   空<EFBFBD><EFBFBD>NULL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD>
   
  4.6) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询没<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   并<EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 为索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>读<EFBFBD>表<EFBFBD><EFBFBD>顺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD>须<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<EFBFBD>
   <EFBFBD> VACUUM ANALYZE<EFBFBD><EFBFBD><EFBFBD> ANALYZE <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>计<EFBFBD><EFBFBD>对确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>顺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   索<EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD>个大表<EFBFBD><EFBFBD><EFBFBD>次顺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>次<EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>快<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIMIT <EFBFBD> ORDER BY
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 确信PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>顺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>以使<EFBFBD><EFBFBD>SET
   enable_seqscan TO 'off'<EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>顺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>次<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 就<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>个索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD>快<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIKE <EFBFBD> ~ <EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD>符串<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符串<EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD>说<EFBFBD><EFBFBD>
          + LIKE 模<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以 % <EFBFBD>头<EFBFBD>
          + ~ <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD>模<EFBFBD><EFBFBD><EFBFBD><EFBFBD>须以 ^ <EFBFBD>头<EFBFBD>
     * <EFBFBD>符串<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>符<EFBFBD>模<EFBFBD><EFBFBD>类<EFBFBD>头<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [a-e]<EFBFBD>
     * 大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ILIKE <EFBFBD> ~* <EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD> 4.8
       <EFBFBD><EFBFBD>述<EFBFBD>表达<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD><EFBFBD> initdb <EFBFBD><EFBFBD><EFBFBD><EFBFBD>须<EFBFBD><EFBFBD><EFBFBD>缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>设置 C
       locale<EFBFBD><EFBFBD><EFBFBD> 为系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>C locale<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>大<EFBFBD>符<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>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>text_pattern_ops索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>LIKE
       <EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
       
   <EFBFBD><EFBFBD>8.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对int2,int8<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>
   
  4.7) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>估<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD> EXPLAIN <EFBFBD><EFBFBD>页<EFBFBD>
   
  4.8) <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD>索<EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  <EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD>符 ~ <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ~* <EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> LIKE <EFBFBD><EFBFBD><EFBFBD><EFBFBD>为 ILIKE<EFBFBD>
   
   大<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SELECT *
    FROM tab
    WHERE lower(col) = 'abc';

   <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD>表达<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
    CREATE INDEX tabindex ON tab (lower(col));

   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>UNIQUE约<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD>身<EFBFBD>容<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>UNIQUE约<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以使<EFBFBD><EFBFBD>CHECK约<EFBFBD><EFBFBD><EFBFBD>件<EFBFBD><EFBFBD><EFBFBD>触<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.9) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD>为 NULL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>论<EFBFBD><EFBFBD><EFBFBD>
  段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD> IS NULL <EFBFBD> IS NOT NULL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SELECT *
   FROM tab
   WHERE col IS NULL;

   为<EFBFBD><EFBFBD><EFBFBD><EFBFBD>对<EFBFBD><EFBFBD> NULL<EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY <EFBFBD><EFBFBD>件<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> IS NULL<EFBFBD> IS NOT
   NULL 修饰符<EFBFBD><EFBFBD><EFBFBD><EFBFBD>件为<EFBFBD> true <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>件为<EFBFBD>false <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   就<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <EFBFBD>记<EFBFBD><EFBFBD><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) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>符类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   类<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>称 说<EFBFBD>
   VARCHAR(n) varchar <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   符串<EFBFBD><EFBFBD><EFBFBD><EFBFBD>足<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>补<EFBFBD><EFBFBD>
   CHAR(n) bpchar <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符串<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>足<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD>以空<EFBFBD> <EFBFBD>补<EFBFBD><EFBFBD>
   TEXT text 没<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   BYTEA bytea <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>NULL<EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD><EFBFBD>
   "char" char <EFBFBD>个<EFBFBD>符
   
   <EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称<EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD>"varlena"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD>说<EFBFBD><EFBFBD><EFBFBD><EFBFBD>头<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<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>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD>声<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以被<EFBFBD>缩<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>空<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   VARCHAR(n) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符串<EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD> TEXT <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>大<EFBFBD><EFBFBD>达 1G左<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><EFBFBD>符串<EFBFBD>
   
   CHAR(n) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>度<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>符串<EFBFBD> CHAR(n)<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   段<EFBFBD><EFBFBD>度以空<EFBFBD> <EFBFBD>补足<EFBFBD><EFBFBD><EFBFBD><EFBFBD>足<EFBFBD><EFBFBD>段<EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> VARCHAR(n) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD> BYTEA <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>尤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> NULL <EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD>差<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.11.1) <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD>
  
   PostgreSQL <EFBFBD><EFBFBD><EFBFBD> SERIAL <EFBFBD><EFBFBD><EFBFBD><EFBFBD>类<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   段<EFBFBD><EFBFBD><EFBFBD><EFBFBD>为SERIAL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   CREATE TABLE person (
      id   SERIAL,
      name TEXT
   );

   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>转<EFBFBD><EFBFBD>为以<EFBFBD><EFBFBD>SQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   CREATE SEQUENCE person_id_seq;
   CREATE TABLE person (
      id   INT4 NOT NULL DEFAULT nextval('person_id_seq'),
      name TEXT
   );

   <EFBFBD><EFBFBD> create_sequence <EFBFBD><EFBFBD>页<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>信<EFBFBD><EFBFBD><EFBFBD>
   
  4.11.2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<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> nextval() <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>对象<EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个 SERIAL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>精确<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> 4.11.1 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>伪<EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>述<EFBFBD><EFBFBD>
   new_id = execute("SELECT nextval('person_id_seq')");
   execute("INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal')");

   <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> new_id <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD> person
   表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 注<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD> SEQUENCE 对象<EFBFBD><EFBFBD>称<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <table>_<serialcolumn>_seq<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> table <EFBFBD> serialcolumn
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>表<EFBFBD><EFBFBD>称<EFBFBD><EFBFBD><EFBFBD> <EFBFBD> SERIAL <EFBFBD>段<EFBFBD><EFBFBD>称<EFBFBD>
   
   类似<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SERIAL 对象缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> currval() <EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SERIAL <EFBFBD><EFBFBD><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) <EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD> currval() <EFBFBD><EFBFBD>导<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>currval() <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>次<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>
   
  4.11.4) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<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>并<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>就<EFBFBD><EFBFBD>导<EFBFBD><EFBFBD><EFBFBD><EFBFBD>常中
   <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>
   
  4.12) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID <EFBFBD><EFBFBD>
  
   PostgreSQL
   <EFBFBD><EFBFBD>建<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>OID<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建表<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>WITHOUT
   OIDS<EFBFBD>项<EFBFBD> OID<EFBFBD>建<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个4<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<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>40亿<EFBFBD><EFBFBD><EFBFBD><EFBFBD>溢<EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID<EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD>使<EFBFBD><EFBFBD> OID <EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><EFBFBD><EFBFBD>系<EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>SERIAl<EFBFBD><EFBFBD>代<EFBFBD><EFBFBD>OID
   <EFBFBD> 为SERIAL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个表中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>溢<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>就<EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SERIAL8<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   CTID <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>带<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>移<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CTID
   <EFBFBD><EFBFBD>记<EFBFBD><EFBFBD>被<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>载<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>索<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD>们<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.13) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<EFBFBD><EFBFBD><EFBFBD>ERROR: Memory exhausted in AllocSetAlloc()<EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>对<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>
   postmaster <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><EFBFBD>
   ulimit -d 262144
   limit datasize 256m

   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>
   shell<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<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>段<EFBFBD><EFBFBD><EFBFBD>设<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD> <EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD>让<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>令<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>SQL客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD> 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>太<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   客<EFBFBD><EFBFBD>端<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><EFBFBD>令<EFBFBD>
   
  4.14) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD><EFBFBD> psql <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SELECT version();<EFBFBD>令<EFBFBD>
   
  4.15) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建<EFBFBD><EFBFBD>个缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>段<EFBFBD><EFBFBD>
  
   使<EFBFBD><EFBFBD> CURRENT_TIMESTAMP<EFBFBD><EFBFBD>
   CREATE TABLE test (x int, modtime TIMESTAMP DEFAULT CURRENT_TIMESTAMP );

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

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

   <EFBFBD><EFBFBD>两个<EFBFBD>价<EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD> t1.col <EFBFBD> t2.col <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t1 中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <EFBFBD><EFBFBD>没<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>[<EFBFBD><EFBFBD>]<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>RIGHT OUTER
   JOIN<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FULL OUTER JOIN<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t1 <EFBFBD> t2
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OUTER <EFBFBD><EFBFBD>左[<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>中
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被称为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>INNER JOIN<EFBFBD><EFBFBD><EFBFBD>
   
  4.17) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>
  
   没<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD> 为PostgreSQL<EFBFBD><EFBFBD><EFBFBD> 载<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>系<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>
   <EFBFBD>跨<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>模<EFBFBD>contrib/dblink<EFBFBD>许<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>跨<EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以
   <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><EFBFBD><EFBFBD><EFBFBD><EFBFBD>客<EFBFBD><EFBFBD>端<EFBFBD>并<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
  4.18) <EFBFBD><EFBFBD><EFBFBD><EFBFBD>让<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>记<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>详<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://techdocs.postgresql.org/guides/SetReturningFunctions
   
  4.19) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD>PL/PgSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>误信<EFBFBD><EFBFBD><EFBFBD>relation with
  OID ##### does not exist<EFBFBD><EFBFBD><EFBFBD>
  
   PL/PgSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>带<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个
   PL/PgSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>访<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个临<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>该表被<EFBFBD> <EFBFBD><EFBFBD>并<EFBFBD>建<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>次<EFBFBD><EFBFBD><EFBFBD><EFBFBD>该<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>失败<EFBFBD><EFBFBD> <EFBFBD> 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>容<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>临<EFBFBD><EFBFBD>表<EFBFBD>解<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PL/PgSQL
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>EXECUTE
   对临<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD>访<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>被<EFBFBD><EFBFBD><EFBFBD>解<EFBFBD><EFBFBD>
   
  4.20) <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><EFBFBD>
  
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>好<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>缺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   
   主/<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD>个主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>读/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD>/SELECT<EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD>主/<EFBFBD><EFBFBD>PostgreSQL<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   Slony-I <EFBFBD>
   
   <EFBFBD><EFBFBD>个主<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>许<EFBFBD><EFBFBD>读/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>请<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>计<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><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>带<EFBFBD><EFBFBD><EFBFBD><EFBFBD>严<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>失<EFBFBD><EFBFBD>Pgcluster<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 中
   <EFBFBD>好<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>以<EFBFBD>费<EFBFBD><EFBFBD>载<EFBFBD>
   
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>费<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>硬件<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>述<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>模<EFBFBD><EFBFBD>
   
  4.21) 为<EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>示<EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD>大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  
   <EFBFBD>常<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>建表<EFBFBD><EFBFBD>对表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>称为<EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 大<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>工<EFBFBD><EFBFBD>软件<EFBFBD><EFBFBD><EFBFBD>pgAdmin<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>建表<EFBFBD><EFBFBD>令<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>个<EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>该<EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD><EFBFBD>建表<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>符使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>起<EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     * <EFBFBD><EFBFBD>为<EFBFBD><EFBFBD><EFBFBD><EFBFBD>已<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>询<EFBFBD><EFBFBD>使<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>符<EFBFBD><EFBFBD>起<EFBFBD><EFBFBD><EFBFBD>