postgresql/doc/FAQ_chinese

   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣨FAQ<41><51> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD>2003 <20><> 01 <20><> 06 <20><> <20><><EFBFBD><EFBFBD>һ
   22:27:35 CST Ŀǰά<C7B0><CEAC><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1>Bruce Momjian (pgman@candle.pha.pa.us )
   <20><><EFBFBD>İ<EFBFBD>ά<EFBFBD><CEAC><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>ΰƽ <20><>laser@pgsqldb.com <20><>
   <20><><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>°汾<C2B0><E6B1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http:
   //www.postgresql.org/files/documentation/faqs/FAQ.html <20>鿴<EFBFBD><E9BFB4>
   <20><><EFBFBD><EFBFBD>ϵͳƽ̨<C6BD><CCA8><EFBFBD>ص<EFBFBD><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://www.postgresql.org/docs/faq/<2F><><EFBFBD>ش<EFBFBD><D8B4><EFBFBD>
   ----------------------------------------------------------------------
   -- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1.1 <#1.1>) PostgreSQL <20><>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1.2 <#1.2>)
   PostgreSQL <20>İ<EFBFBD>Ȩ<EFBFBD><C8A8>ʲô? 1.3 <#1.3>) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô Unix
   ƽ̨<C6BD>ϣ<EFBFBD> 1.4 <#1.4>) <20><><EFBFBD>õķ<C3B5> Unix ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9> 1.5 <#1.5>)
   <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5> PostgreSQL<51><4C> 1.6 <#1.6>) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5><C3B5><EFBFBD> PostgreSQL
   <20><>֧<EFBFBD>֣<EFBFBD> 1.7 <#1.7>) PostgreSQL <20><><EFBFBD>µİ汾<C4B0><E6B1BE>ʲô<CAB2><C3B4> 1.8 <#1.8>)
   <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>õ<EFBFBD> PostgreSQL <20><><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD> 1.9 <#1.9>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD><EFBFBD>֪<EFBFBD><D6AA> BUG
   <20><>ȱʧ<C8B1><CAA7><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD> 1.10 <#1.10>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ SQL <20><> 1.11 <#1.11>)
   PostgreSQL <20><> Y2K <20><><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD> 1.12 <#1.12>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뿪<EFBFBD><EBBFAA><EFBFBD><EFBFBD><EFBFBD>飿
   1.13 <#1.13>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ύһ<E1BDBB><D2BB> BUG <20><><EFBFBD>棿 1.14 <#1.14>) PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DBMS <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD> 1.15 <#1.15>) <20><>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><>
   <20>û<EFBFBD><C3BB>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2.1 <#2.1>) <20><> PostgreSQL <20><> ODBC <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4> 2.2
   <#2.2>) <20><>ʲô<CAB2><C3B4><EFBFBD>߿<EFBFBD><DFBF>԰<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD> Web ҳ<>棿 2.3 <#2.3>)
   PostgreSQL ӵ<><D3B5>ͼ<EFBFBD><CDBC><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2.4 <#2.4>) <20><><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>Ժ<EFBFBD>
   PostgreSQL <20>򽻵<EFBFBD><F2BDBBB5><EFBFBD> ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 3.1 <#3.1>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD> PostgreSQL
   װ<><D7B0> /usr/local/pgsql <20><><EFBFBD><EFBFBD><EFBFBD>ĵط<C4B5><D8B7><EFBFBD> 3.2 <#3.2>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster
   ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ Bad System Call/<2F><>ϵͳ<CFB5><CDB3><EFBFBD>ô<EFBFBD><C3B4><EFBFBD> <20><> Core Dumped <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4>
   3.3 <#3.3>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /IpcMemoryCreate/
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ ʲô<CAB2><C3B4> 3.4 <#3.4>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   /IpcSemaphoreCreate/ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Ϊʲô<CAB2><C3B4> 3.5 <#3.5>)
   <20><><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD> 3.6 <#3.6>)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ø<EFBFBD><C3B8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܣ<EFBFBD> 3.7 <#3.7>) PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD> 3.8 <#3.8>)
   Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ӵ<EFBFBD>¼ʱ<C2BC>յ<EFBFBD><D5B5><EFBFBD>Sorry, too many clients<74><73> <20><>Ϣ<EFBFBD><CFA2> 3.9
   <#3.9>) pgsql_tmp Ŀ¼<C4BF>ﶼ<EFBFBD><EFB6BC>Щʲô<CAB2><C3B4> 3.10 <#3.10>) ΪʲôҪ<C3B4><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>汾ʱ<E6B1BE><CAB1> dump <20><> restore <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.1 <#4.1>)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>α<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> 4.2 <#4.2>)
   <20><><EFBFBD><EFBFBD>ֻѡ<D6BB><D1A1>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>У<EFBFBD> 4.3 <#4.3>)
   <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>б<EFBFBD><D0B1><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /psql /<2F>￴
   <20><><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD> 4.4 <#4.4>) <20><><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE>һ<EFBFBD>У<EFBFBD> 4.5 <#4.5>)
   һ<>У<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><DFB4>Ƕ<EFBFBD><C7B6>٣<EFBFBD> 4.6 <#4.6>)
   <20>洢һ<E6B4A2><D2BB><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5>ı<EFBFBD><C4B1>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ٴ<EFBFBD><D9B4>̿ռ䣿 4.7 <#4.7>)
   <20><><EFBFBD>β鿴<CEB2><E9BFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>Լ<EFBFBD><D4BC>û<EFBFBD><C3BB>Ķ<EFBFBD><C4B6>壿 4.8 <#4.8>)
   <20>ҵIJ<D2B5>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> 4.9 <#4.9>)
   <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2>ܿ<EFBFBD><DCBF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵIJ<D2B5>ѯ<EFBFBD>ģ<EFBFBD> 4.10 <#4.10>) R-tree
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> 4.11 <#4.11>) ʲô<CAB2>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>Genetic Query
   Optimization<6F><6E><EFBFBD><EFBFBD> 4.12 <#4.12>)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ң<EFBFBD><D2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>Сд<D0A1>޹ز<DEB9><D8B2>ң<EFBFBD> 4.13 <#4.13>)
   <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֶ<EFBFBD><D6B6>Ƿ<EFBFBD>Ϊ NULL<4C><4C> 4.14 <#4.14>)
   <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ʲô<CAB2><C3B4>ͬ<EFBFBD><CDAC> 4.15.1 <#4.15.1>)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD>/<2F>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> 4.15.2 <#4.15.2>)
   <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кŵ<D0BA>ֵ<EFBFBD><D6B5> 4.15.3 <#4.15.3>) ʹ<><CAB9> currval() <20><>
   nextval() <20>ᵼ<EFBFBD>º<EFBFBD><C2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>race condition<6F><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.15.4
   <#4.15.4>) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>쳣<EFBFBD><ECB3A3>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>أ<EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA><EFBFBD>
   <20>ε<EFBFBD>ȡֵ<C8A1>д<EFBFBD><D0B4>ڼ<EFBFBD><DABC><EFBFBD><EFBFBD>أ<EFBFBD> 4.16 <#4.16>) ʲô<CAB2><C3B4> OID<49><44>ʲô<CAB2><C3B4> TID <20><> 4.17
   <#4.17>) PostgreSQL ʹ<>õ<EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> 4.18 <#4.18>)
   Ϊʲô<CAB2><C3B4><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ERROR: Memory exhausted in AllocSetAlloc()/<2F><><EFBFBD><EFBFBD>
   4.19 <#4.19>) <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD> PostgreSQL <20>İ汾<C4B0><E6B1BE> 4.20 <#4.20>)
   Ϊʲô<CAB2>ҵĴ<D2B5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD>/invalid large obj
   descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><> 4.21 <#4.21>)
   <20><><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>һ<EFBFBD><D2BB>ȱʡֵ<CAA1>ǵ<EFBFBD>ǰʱ<C7B0><CAB1><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> 4.22 <#4.22>) Ϊʲôʹ<C3B4><CAB9> IN
   <20><><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF>ô<EFBFBD><C3B4><EFBFBD><EFBFBD> 4.23 <#4.23>) <20><><EFBFBD>ν<EFBFBD><CEBD><EFBFBD> outer join <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD> 4.24
   <#4.24>) <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>漰<EFBFBD><E6BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF> 4.25 <#4.25>)
   <20><><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6>л<EFBFBD><D0BB><EFBFBD><EFBFBD>У<EFBFBD> 4.26 <#4.26>) Ϊʲô<CAB2><C3B4> PL/PgSQL
   <20><><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2>ܿɿ<DCBF><C9BF>ش<EFBFBD><D8B4><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD> 4.27 <#4.27>) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݸ<EFBFBD><DDB8><EFBFBD>ѡ<EFBFBD>
   4.28 <#4.28>) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>ѡ<EFBFBD> <20><>չ PostgreSQL 5.1 <#5.1>)
   <20><>д<EFBFBD><D0B4>һ<EFBFBD><D2BB><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>庯<EFBFBD><E5BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ psql/ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ϊʲô<CAB2>ᵼ<EFBFBD><E1B5BC> core
   dump<6D><70> 5.2 <#5.2>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD> PostgreSQL
   <20><><EFBFBD><EFBFBD>һЩͦ<D0A9><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺͺ<CDBA><CDBA><EFBFBD><EFBFBD><EFBFBD> 5.3 <#5.3>) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>
   C <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 5.4 <#5.4>)
   <20><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD>һ<EFBFBD><D2BB>Դ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD>±<EFBFBD><C2B1><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>ı䣿
   ----------------------------------------------------------------------
   -- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1.1) PostgreSQL <20><>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD>
   /Post-Gres-Q-L// <20><>/ PostgreSQL <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> DBMS <20><><EFBFBD>о<EFBFBD><D0BE><EFBFBD><EFBFBD> POSTGRES
   <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>ǿ<EFBFBD>档 PostgreSQL <20>ڱ<EFBFBD><DAB1><EFBFBD> POSTGRES
   <20><>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD>ͺͷḻ<CDB7><E1B8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵Ļ<CDB5><C4BB><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD> һ<><D2BB><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD> SQL
   <20>Ӽ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD> PostQuel <20><>ѯ<EFBFBD><D1AF><EFBFBD>ԡ<EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>붼<EFBFBD><EBB6BC><EFBFBD>Ի<EFBFBD><D4BB>á<EFBFBD> PostgreSQL <20>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD>ɲμ<C9B2> PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԱС<D4B1><D0A1><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD> Ŀǰ<C4BF><C7B0>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD> Marc G. Fournier
   <20><>scrappy@postgreSQL.org <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><CEBC><EFBFBD><EFBFBD>μ<EFBFBD>1.6<EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ڸ<EFBFBD><DAB8><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD><EFBFBD> PostgreSQL 1.01 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Andrew Yu <20><>
   Jolly Chen<65><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>ֲ<EFBFBD><D6B2>
   <20><><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD>Ժ<EFBFBD><D4BA><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ס<EFBFBD>PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ
   Postgres<65><73><EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD> <20>ݴ<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3> Michael Stonebraker
   <20><><EFBFBD>ڵ<EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>о<EFBFBD><D0BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>ͱ<EFBFBD><CDB1><EFBFBD>ְԱ<D6B0><D4B1><EFBFBD>ɵġ<C9B5>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Postgres<65><73><EFBFBD><EFBFBD> 1995 <20>꣬<EFBFBD><EAA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL
   <20><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָij<D6B8> Postgres95<39><35><EFBFBD><EFBFBD> 1996<39><36>ĩ<EFBFBD><C4A9><EFBFBD>Ÿ<EFBFBD><C5B8><EFBFBD>Ϊ PostgreSQL<51><4C>
   1.2) PostgreSQL <20>İ<EFBFBD>Ȩ<EFBFBD><C8A8>ʲô? PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>ȨԼ<C8A8><D4BC><EFBFBD><EFBFBD> PostgreSQL
   <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>ϵͳ <20><>PostgreSQL Data Base Management System<65><6D>
   <20><><EFBFBD>ְ<EFBFBD>Ȩ<EFBFBD><C8A8>c<EFBFBD><63>1996-2002<30><32>PostgreSQL ȫ<>򿪷<EFBFBD>С<EFBFBD><D0A1> <20><><EFBFBD>ְ<EFBFBD>Ȩ<EFBFBD><C8A8>c<EFBFBD><63>1994-6
   <20><><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD> <20><>Portions copyright (c) 1996-2002, PostgreSQL Global
   Development Group Portions Copyright (c) 1994-6 Regents of the
   University of California<69><61>
   <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>κ<EFBFBD>Ŀ<EFBFBD><C4BF>ʹ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸ĺͷַ<CDB7><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>κη<CEBA><CEB7><EFBFBD>
   <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD><CBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ<EFBFBD>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD><CDB1><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>С<EFBFBD> <20><>Permission to use, copy, modify, and
   distribute this software and its documentation for any purpose,
   without fee, and without a written agreement is hereby granted,
   provided that the above copyright notice and this paragraph and the
   following two paragraphs appear in all copies.<2E><>
   <20><><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD>ʹ<EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µĶ<C2B5><C4B6>κε<CEBA><CEB5><EFBFBD><EFBFBD><EFBFBD>
   <20><>
   ֱ<>ӵģ<D3B5><C4A3><EFBFBD><EFBFBD>ӵģ<D3B5><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD>ӵĻ<D3B5><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>𻵣<EFBFBD><F0BBB5A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>
   <20><> ʹ<><CAB9><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>ʧ<EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD>ʱҲ<CAB1><D2B2><EFBFBD><EFBFBD><EFBFBD>ˡ<EFBFBD> <20><>IN NO EVENT SHALL
   THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT,
   INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
   LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
   DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED
   OF THE POSSIBILITY OF SUCH DAMAGE.<2E><>
   <20><><EFBFBD>ݴ<EFBFBD>ѧ<EFBFBD><D1A7>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD>κα<CEBA>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ijһ<C4B3>ض<EFBFBD><D8B6><EFBFBD>;<EFBFBD><CDBE><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>
   ֤<><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><E1B9A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB>ڡ<EFBFBD><DAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǡ<EFBFBD><C7A1>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>ѧû<D1A7><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>ά <20><><EFBFBD><EFBFBD>֧<EFBFBD>֣<EFBFBD><D6A3><EFBFBD><EFBFBD>£<EFBFBD><C2A3><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>޸ĵķ<C4B5><C4B7><EFBFBD><EFBFBD><EFBFBD> <20><>THE UNIVERSITY OF
   CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
   BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE
   MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.<2E><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BSD <20><>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD>Դ<EFBFBD><D4B4>Ȩ<EFBFBD><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>δ<EFBFBD><CEB4><EFBFBD>κ<EFBFBD>
   <20><><EFBFBD>ơ<EFBFBD><C6A1><EFBFBD><EFBFBD><EFBFBD>ϲ<EFBFBD><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD> 1.3) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô Unix
   ƽ̨<C6BD>ϣ<EFBFBD> һ<><D2BB>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ִ<EFBFBD><D6B4><EFBFBD> UNIX <20><><EFBFBD>ݵ<EFBFBD>ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL
   <20><><EFBFBD>ڰ<EFBFBD>װָ<D7B0><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>˷<EFBFBD><CBB7><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD>Ե<EFBFBD>ƽ̨<C6BD><CCA8> 1.4) <20><><EFBFBD>õķ<C3B5> Unix
   ƽ̨<C6BD><CCA8><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9> <20>ͻ<EFBFBD><CDBB><EFBFBD> <20><> libpq C
   <20>⣬psql<71><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿںͿͻ<CDBF><CDBB><EFBFBD>Ӧ<EFBFBD>ó<EFBFBD><C3B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿ<EFBFBD><C9BF><EFBFBD><EFBFBD><EFBFBD> MS Windows ƽ
   ̨<><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF>ܵġ<DCB5><C4A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><C2A3>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD> MS Windows <20><><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>
   TCP/IP <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>ֵ<EFBFBD> Unix
   ƽ̨<C6BD>ϵķ<CFB5><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨѶ<CDA8><D1B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>汾<EFBFBD>а<EFBFBD> <20><>һ<EFBFBD><D2BB><EFBFBD>ļ<EFBFBD> win32.mak <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   Win32 libpq <20><><EFBFBD><EFBFBD> psql <20><>PostgreSQL Ҳ<><D2B2><EFBFBD><EFBFBD> <20><> ODBC <20>ͻ<EFBFBD><CDBB><EFBFBD>ͨѶ<CDA8><D1B6> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><DABF><EFBFBD>ͨ<EFBFBD><CDA8> Cygwin <20><>Cygnus <20><> Unix/NT <20><>ֲ<EFBFBD><D6B2><EFBFBD><EFBFBD> Windows
   NT <20><> Win2k <20><><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD>汾<EFBFBD><E6B1BE><EFBFBD><EFBFBD> See /pgsql/doc/FAQ_MSWIN/ <20>ļ<EFBFBD><C4BC><EFBFBD>
   http://www.PostgreSQL.org/docs/faq-mswin.html <20><> <20><>ֲ<EFBFBD><D6B2> MS Win
   NT/2000/XP <20>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><DABD>С<EFBFBD> 1.5) <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5> PostgreSQL<51><4C>
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>FTPվ<50><D5BE><EFBFBD><EFBFBD>
   ftp://ftp.PostgreSQL.org/pub<75><62><EFBFBD><EFBFBD><EFBFBD><EFBFBD>վ<EFBFBD><D5BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>վ<EFBFBD><D5BE><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3> 1.6)
   <20>Ҵ<EFBFBD><D2B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܵõ<DCB5><C3B5><EFBFBD> PostgreSQL <20><>֧<EFBFBD>֣<EFBFBD>
   <20><>Ҫ<EFBFBD><D2AA><EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1>ǣ<EFBFBD>pgsql-general@postgreSQL.org <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD>
   PostgreSQL <20><> <20><><EFBFBD>⡣Ҫ<E2A1A3><D2AA><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD>Ϊ
   subscribe end <20><><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD> pgsql-general-request@postgreSQL.org <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD>ȡժҪ<D5AA>б<EFBFBD><D0B1><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>pgsql-general-digest-
   request@postgreSQL.org <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA> subscribe end ÿ<><C3BF><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1>ﵽ<EFBFBD><EFB5BD>Լ
   30k <20><><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>ժҪ<D5AA>ͷ<EFBFBD><CDB7>͸<EFBFBD><CDB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1>ij<EFBFBD>Ա<EFBFBD><D4B1>
   <20><><EFBFBD><EFBFBD><EFBFBD>Բμӳ<CEBC><D3B3><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD>
   bugs-request@postgreSQL.org <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA> subscribe end
   <20><><EFBFBD><EFBFBD><EFBFBD>Բμӿ<CEBC><D3BF><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD>
   hackers-request@postgreSQL.org <20><> <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA> subscribe end <20><><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD>
   PostgreSQL <20>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><> WWW <20><>ҳ<EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD>
   http://postgresql.org/ <20><> EFNet <20>ﻹ<EFBFBD><EFBBB9>һ<EFBFBD><D2BB> IRC Ƶ<><C6B5><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5>
   #PostgreSQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD> unix <20><><EFBFBD><EFBFBD>irc -c '#PostgreSQL' "$USER"
   irc.phoenix.net <20><>ҵ֧<D2B5>ֹ<EFBFBD>˾<EFBFBD><CBBE><EFBFBD>б<EFBFBD><D0B1><EFBFBD>
   http://www.PostgreSQL.org/users-lounge/commercial-support.html <20><> 1.7)
   PostgreSQL <20><><EFBFBD>µİ汾<C4B0><E6B1BE>ʲô<CAB2><C3B4> PostgreSQL <20><><EFBFBD>µİ汾<C4B0>ǰ汾
   7.2.3<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.3.1 <20>ˡ<EFBFBD><CBA1><EFBFBD>
   <20><><EFBFBD>Ǽƻ<C7BC>ÿ<EFBFBD>ĸ<EFBFBD><C4B8>·<EFBFBD><C2B7><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>Ҫ<EFBFBD>汾<EFBFBD><E6B1BE> 1.8) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>õ<EFBFBD> PostgreSQL
   <20><><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD> <20>ڷ<EFBFBD><DAB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB>ֲᣬ<D6B2>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>һЩС<D0A9>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1>μ<EFBFBD> /doc
   Ŀ¼<C4BF><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2> ӦΪ $PGHOME/doc<6F><63><EFBFBD><EFBFBD><EFBFBD>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL
   <20><><EFBFBD>ֲᣬ<D6B2><E1A3AC> http://www.PostgreSQL.org/users-lounge/docs/ <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><E1B9A9><EFBFBD><EFBFBD> http://www.PostgreSQL.org/docs/awbook.html
   www.PostgreSQL.org/docs/awbook.html> <20><>
   http://www.commandprompt.com/ppbook/ www.commandprompt.com/ppbook/>
   <20><><EFBFBD><EFBFBD> http://www.ca.PostgreSQL.org/books/ www.ca.PostgreSQL.org/books/>
   <20><><EFBFBD>й<EFBFBD><D0B9><EFBFBD> PostgreSQL <20>Ŀɹ<C4BF><C9B9>鼮<EFBFBD><E9BCAE><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   http://techdocs.PostgreSQL.org/ techdocs.PostgreSQL.org/> <20><><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD>й<EFBFBD>
   PostgreSQL <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¡<EFBFBD> /psql/ <20><>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> \d
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   վ<><D5BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD> 1.9) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD><EFBFBD>֪<EFBFBD><D6AA> BUG <20><>ȱʧ<C8B1><CAA7><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD>
   PostgreSQL ֧<><D6A7>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>չ<EFBFBD>˵<EFBFBD> SQL-92 <20><><EFBFBD>Ӽ<EFBFBD><D3BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵ<EFBFBD> TODO
   www.postgresql.org/docs/todo.html>
   www.postgresql.org/docs/todo.html><3E>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD>֪<EFBFBD><D6AA><EFBFBD>棬ȱʧ<C8B1><CAA7>
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   http://www.postgresql.org/docs/awbook.html <20>Ĺ<EFBFBD><C4B9><EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SQL<51><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˡ<EFBFBD><CBA1><EFBFBD><EFBFBD><EFBFBD> http://www.commandprompt.com/ppbook
   www.commandprompt.com/ppbook/> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL <20><><EFBFBD>顣
   <20><>http://www.intermedia.net/support/sql/sqltut.shtm<74><6D>http:
   //ourworld.compuserve.com/homepages/graeme_birchall/HTM_COOK.HTM
   ourworld.compuserve.com/homepages/graeme_birchall/HTM_COOK.HTM> <20><>
   http://sqlcourse.com sqlcourse.com/> <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ž̡̳<CCB3> <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
   "Teach Yourself SQL in 21 Days, Second Edition"<22><>21<32><31>ѧ<EFBFBD><D1A7>SQL<51><4C>
   <20>ڶ<EFBFBD><DAB6>棩<EFBFBD><E6A3A9><EFBFBD><EFBFBD> http://members.tripod.com/er4ebus/sql/index.htm
   members.tripod.com/er4ebus/sql/index.htm> <20><><EFBFBD>ǵ<EFBFBD><C7B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>ϲ<EFBFBD><CFB2> /The
   Practical SQL Handbook, Bowman, Judith S., et al., Addison-Wesley <20><> /
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ The Complete Reference SQL, Groff et al., McGraw-Hill <20><>/
   1.11) PostgreSQL <20><> Y2K <20><><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD> <20>ǣ<EFBFBD><C7A3><EFBFBD><EFBFBD>Ǻ<EFBFBD><C7BA><EFBFBD><EFBFBD>׿<EFBFBD><D7BF><EFBFBD> 2000 AD ֮<><D6AE><EFBFBD><EFBFBD>
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   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD><CEA3><EFBFBD><EFBFBD><EFBFBD> pgsql-hackers <20><> pgsql-patches
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   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>ҳ<EFBFBD>ἰ<EFBFBD><E1BCB0> PostgreSQL <20><>˾<EFBFBD><CBBE><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><D6A7>
   PostgreSQL <20><>Ŀ<EFBFBD><C4BF>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD>ض<EFBFBD><D8B6>Ĺ<EFBFBD>˾<EFBFBD><CBBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD>⣬Ҳ<E2A3AC><D2B2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>֧Ʊ<D6A7><C6B1><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5>ַ<EFBFBD><D6B7>
   ----------------------------------------------------------------------
   -- <20>û<EFBFBD><C3BB>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2.1) <20><> PostgreSQL <20><> ODBC <20><><EFBFBD><EFBFBD>ô<EFBFBD><C3B4> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ODBC
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ã<EFBFBD>PsqlODBC <20><> OpenLink ODBC.
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>http://gborg.postgresql.org/project/psqlodbc/projdisplay.php
   <20><><EFBFBD><EFBFBD> PsqlODBC <20><> OpenLink ODBC <20><><EFBFBD>Դ<EFBFBD> http://www.openlinksw.com/
   <20><><EFBFBD>á<EFBFBD><C3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǵı<C7B5>׼ ODBC
   <20>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD>ֵĿͻ<C4BF><CDBB><EFBFBD>ƽ̨<C6BD><CCA8>Win, Mac, Unix,
   VMS<4D><53><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> PostgreSQL ODBC<42><43>
   <20><><EFBFBD>ǿ<EFBFBD><C7BF>ܽ<EFBFBD><DCBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʒ<EFBFBD><C6B7><EFBFBD>۸<EFBFBD><DBB8><EFBFBD>Щ<EFBFBD><D0A9>Ҫ<EFBFBD><D2AA>ҵ֧<D2B5>ֵ<EFBFBD><D6B5>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
   freeware <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>İ汾<C4B0><E6B1BE><EFBFBD>Եõ<D4B5><C3B5><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF> postgres95@openlink.co.uk
   <20><> 2.2) <20><>ʲô<CAB2><C3B4><EFBFBD>߿<EFBFBD><DFBF>԰<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD> Web ҳ<>棿
   һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8>ͦ<EFBFBD><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD> վ<><D5BE><EFBFBD>ǣ<EFBFBD>http://www.webreview.com <20><>
   <20><><EFBFBD><EFBFBD> Web <20><><EFBFBD>ɣ<EFBFBD>PHP <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>õĽӿڡ<D3BF><DAA1><EFBFBD><EFBFBD>ڣ<EFBFBD>http://www.php.net/ <20><>
   <20><><EFBFBD>ڸ<EFBFBD><DAB8>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD>񣬺ܶ<F1A3ACBA><DCB6>˲<EFBFBD><CBB2><EFBFBD> Perl <20>ӿں<D3BF> CGI.pm <20><> mod_perl <20><> 2.3)
   PostgreSQL ӵ<><D3B5>ͼ<EFBFBD><CDBC><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ǵġ<C7B5><C4A1>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL
   <20><>ͼ<EFBFBD>νӿڡ<D3BF><DAA1><EFBFBD><EFBFBD><EFBFBD>PgAccess<73><73>http: //www.pgaccess.com)<29><>PgAdmin II
   <20><>http://www.pgadmin.org<72><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Win32<33><32><EFBFBD><EFBFBD> RHDB Admin
   (http://sources.redhat.com/rhdb/<2F><> <20>Լ<EFBFBD> Rekall
   <20><>http://www.thekompany.com/products/rekall/<2F><>
   ר<>е<EFBFBD>/proprietary)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PHPPgAdmin
   <20><>http://phppgadmin.sourceforge.net/<2F><> phppgadmin.sourceforge.net/>
   <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> web <20><> PostgreSQL <20><><EFBFBD>ʽ<EFBFBD> <20>ڡ<EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>棬<EFBFBD><E6A3AC>Ϊ PgAccess
   <20><><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ҳ<><D2B3> http://www.pgaccess.org/<2F><> 2.4)
   <20><><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>Ժ<EFBFBD> PostgreSQL <20>򽻵<EFBFBD><F2BDBBB5><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еı<D0B5><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6>з<EFBFBD><D0B7><EFBFBD>
   PostgreSQL <20>Ľӿڡ<D3BF><DAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ե<EFBFBD><D4B5><EFBFBD>չģ<D5B9><C4A3> <20>б<EFBFBD><D0B1><EFBFBD> PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>а<EFBFBD><D0B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>½ӿڣ<D3BF> * C (libpq) * Embedded C (ecpg) * Java (jdbc)
   * Python (PyGreSQL) * TCL (libpgtcl) <20><><EFBFBD><EFBFBD><EFBFBD>Ľӿ<C4BD><D3BF><EFBFBD>
   http://gborg.postgresql.org <20>ϵ<EFBFBD> /Drivers/Interfaces/ С<>ڡ<EFBFBD>
   ----------------------------------------------------------------------
   -- ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 3.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD> PostgreSQL װ<><D7B0> /usr/local/pgsql
   <20><><EFBFBD><EFBFBD><EFBFBD>ĵط<C4B5><D8B7><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure ʱ<><CAB1><EFBFBD><EFBFBD> --prefix ѡ<> 3.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ Bad System Call/<2F><>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Core Dumped
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǻܶ෽<DCB6><E0B7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><E2A3AC><EFBFBD>ȼ<EFBFBD><C8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>֧<EFBFBD><D6A7>
   System V <20><>չ<EFBFBD><D5B9> PostgreSQL <20><>Ҫ<EFBFBD>ں<EFBFBD>֧<EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>źŵơ<C5B5> 3.3)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /IpcMemoryCreate/ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ ʲô<CAB2><C3B4>
   <20><>Ҫô<D2AA><C3B4>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><DABA><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD>ù<EFBFBD><C3B9><EFBFBD><EFBFBD>ڴ棬Ҫô<D2AA><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˵Ŀ<CBB5><C4BF>ù<EFBFBD>
   <20><> <20>ڴ档<DAB4><E6A1A3>Ҫ<EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   postmaster
   <20><><EFBFBD><EFBFBD>ʱʹ<CAB1>õĻ<C3B5><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺ<EFBFBD><CDBA>˽<EFBFBD><CBBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3>ʹ<EFBFBD><CAB9>ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͽ<EFBFBD><CDBD><EFBFBD><EFBFBD><EFBFBD>
   Ŀ ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ~1MB<4D><42><EFBFBD>йع<D0B9><D8B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>źŵƵ<C5B5><C6B5><EFBFBD>ϸ<EFBFBD><CFB8>Ϣ<EFBFBD><CFA2><EFBFBD>ο<EFBFBD> PostgreSQL
   Administrator's Guide
   www.postgresql.org/idocs/index.php?kernel-resources.html> <20><> 3.4)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> postmaster ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /IpcSemaphoreCreate/ <20><> <20><><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2> /IpcSemaphoreCreate: semget failed (No space left on
   device)/<2F><><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>㹻<EFBFBD><E3B9BB><EFBFBD>źŵ<C5BA><C5B5><EFBFBD>Դ<EFBFBD><D4B4>Postgres <20><>ÿ<EFBFBD><C3BF>DZ
   <20>ڵĺ<DAB5>̨<EFBFBD><CCA8><EFBFBD>̶<EFBFBD><CCB6><EFBFBD>Ҫһ<D2AA><D2BB><EFBFBD>źŵơ<C5B5>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʱ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԱȽ<D4B1><C8BD>ٵĺ<D9B5>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster<65><72>ʹ<EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD> /-N/ <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡֵ 32 <20>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   postmaster<65><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õĽ<C3B5><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǼӴ<C7BC><D3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˵<DABA> SEMMNS <20><> SEMMNI <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>źŵƲ<C5B5><C6B2><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF>ܵ<EFBFBD><DCB5><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܾ͸<DCBE><CDB8><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><DABA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>źŵ<C5BA>֧<EFBFBD><D6A7>
   <20><> <20>йع<D0B9><D8B9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>źŵƵ<C5B5><C6B5><EFBFBD>ϸ<EFBFBD><CFB8>Ϣ<EFBFBD><CFA2><EFBFBD>ο<EFBFBD> PostgreSQL Administrator's
   Guide www.postgresql.org/idocs/index.php?kernel-resources.html> <20><>
   3.5) <20><><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD> ȱʡʱ<CAA1><CAB1>PostgreSQL ֻ<><D6BB><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8> unix
   <20><><EFBFBD>׽<EFBFBD><D7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> /-i/ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   /postmaster/<2F><>*<2A><><EFBFBD><EFBFBD>*ͨ<><CDA8><EFBFBD><EFBFBD>Ӧ<EFBFBD>ı<EFBFBD><C4B1> /$PGDATA/pg_hba.conf/
   <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> host-based
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD> <20><><EFBFBD>ӵġ<D3B5><C4A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> TCP/IP
   <20><><EFBFBD>ӡ<EFBFBD> 3.6) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB>ø<EFBFBD><C3B8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܣ<EFBFBD>
   <20><>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC>ٲ<EFBFBD>ѯ<EFBFBD><D1AF>EXPLAIN <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>۲<EFBFBD> PostgreSQL
   <20><><EFBFBD>ν<EFBFBD><CEBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD> ѯ<><D1AF><EFBFBD>Լ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
   INSERT<52><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> COPY <20><><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
   INSERT <20><><EFBFBD>öࡣ<C3B6><E0A1A3><EFBFBD>Σ<EFBFBD>û<EFBFBD>д<EFBFBD><D0B4><EFBFBD> BEGIN WORK/COMMIT <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE>
   <20><><EFBFBD><EFBFBD><EFBFBD>䱻<EFBFBD><E4B1BB>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ͬһ<CDAC><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>洦<EFBFBD><E6B4A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>䡣<EFBFBD><E4A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><C4B6>⿪<EFBFBD><E2BFAA><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸı<DDB8>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD><EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>á<EFBFBD><C3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD> /-o -F/ ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster
   <20><> <20><>ֹ fsync()<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /fsync() /
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˢ<EFBFBD>µ<EFBFBD><C2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD> <20>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> postmaster -B
   ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD>Ӻ<EFBFBD><D3BA>˽<EFBFBD><CBBD><EFBFBD>ʹ<EFBFBD>õĹ<C3B5><C4B9><EFBFBD><EFBFBD>ڴ滺<DAB4><E6BBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>̫<EFBFBD><CCAB><EFBFBD><EFBFBD>postmaster <20><><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>ں<EFBFBD><DABA>ڹ<EFBFBD><DAB9><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>ռ<EFBFBD><D5BC>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD>ơ<EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8K <20><><EFBFBD><EFBFBD>ȱʡ 64 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD>ʹ<EFBFBD>ú<EFBFBD>̨<EFBFBD><CCA8><EFBFBD>̵<EFBFBD> -S
   ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-S
   ֵ<><D6B5><EFBFBD><EFBFBD>K<EFBFBD>ֽڼƵģ<C6B5>ȱʡ<C8B1><CAA1> 512 <20><>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>512K<32><4B><EFBFBD><EFBFBD> <20>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> CLUSTER
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>оۼ<D0BE><DBBC><EFBFBD><EFBFBD>š<EFBFBD><C5A1><EFBFBD><EFBFBD><EFBFBD> CLUSTER
   <20><><EFBFBD>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ϸ<EFBFBD>ڡ<EFBFBD> 3.7) PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD>
   PostgreSQL
   <20>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD><DAB1><EFBFBD>״̬<D7B4><CCAC>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2><EFBFBD>ܶԵ<DCB6><D4B5><EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><CDBE><EFBFBD>а<EFBFBD><D0B0><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ȣ<EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> --enable-cassert ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> configure<72><65><EFBFBD>кܶ<D0BA> /assert()/
   <20><> <20>غ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD>̺<EFBFBD><CCBA>ڷ<EFBFBD><DAB7><EFBFBD>ijЩδ<D0A9><CEB4>Ԥ<EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD><EFBFBD>ʱֹͣ<CDA3><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD> postmaster <20><>
   postgres <20><><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD>õ<EFBFBD>ѡ<EFBFBD><EFBFBD><EEA1A3><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster
   ʱ<><CAB1>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>־<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ȥ<EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD> cd
   /usr/local/pgsql ./bin/postmaster >server.log 2>&1 & <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   PostgreSQL <20><><EFBFBD><EFBFBD>Ŀ¼<C4BF><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> server.log <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CDB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2>postmaster <20><>һ<EFBFBD><D2BB> -d
   ѡ<><EFBFBD><EEA3AC>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>ϸ<EFBFBD>ڻ㱨<DABB><E3B1A8>-d
   ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹߵĵ<DFB5>
   <20>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܻ<EFBFBD><DCBB><EFBFBD><EFBFBD>ɾ޴<C9BE><DEB4><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD> <20><><EFBFBD><EFBFBD> postmaster
   û<><C3BB><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postgres <20><>̨<EFBFBD><CCA8><EFBFBD>̣<EFBFBD>Ȼ <20><>ֱ<EFBFBD>Ӽ<EFBFBD><D3BC><EFBFBD>
   SQL <20><><EFBFBD>䡣<EFBFBD><E4A1A3><EFBFBD><EFBFBD>*ֻ* <20>Ƽ<EFBFBD><C6BC>ڵ<EFBFBD><DAB5>Ե<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ô<EFBFBD>ɡ<EFBFBD><C9A1><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD>ʱ<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD>Ƿֺű<D6BA>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD><C5B5>Է<EFBFBD><D4B7>ű<EFBFBD><C5B1>룬<EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4><EFBFBD>顣<EFBFBD><E9A1A3>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD> postmaster
   <20><><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǻ<EFBFBD>ʵ<EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>һ<EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD> <20><><EFBFBD><EFBFBD> postmaster <20>Ѿ<EFBFBD>
   <20><><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /psql/<2F><>Ȼ<EFBFBD><C8BB><EFBFBD>ҳ<EFBFBD> /psql/ <20><> Ӧ<><D3A6> /postgres/
   <20><><EFBFBD>̵<EFBFBD> PID<49><44>ʹ<EFBFBD><CAB9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /postgres /PID <20>ϡ<EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>öϵ㲢<CFB5>Ҵ<EFBFBD> /psql/ <20><>ִ<EFBFBD>в<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD>
   /postgres/ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PGOPTIONS="-W n"<22><>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   /psql/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳ<EFBFBD> /n/
   <20>룬<EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><CDBF>Ը<EFBFBD><D4B8><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҹ<EFBFBD><D2B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3><EFBFBD>Ĺ<EFBFBD><C4B9>̡<EFBFBD> postgres <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   -s<><73>-A<><41><EFBFBD><EFBFBD> -t ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5>Ժ<EFBFBD><D4BA><EFBFBD><EFBFBD>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>dz<EFBFBD><C7B3><EFBFBD><EFBFBD>á<EFBFBD> <20>㻹<EFBFBD><E3BBB9><EFBFBD>Դ<EFBFBD>
   profiling ֧<>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD>Ա<EFBFBD><D4B1>۲<EFBFBD><DBB2><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD>ռ<EFBFBD>õ<EFBFBD>ִ<EFBFBD><D6B4>ʱ<EFBFBD><CAB1><EFBFBD>϶ࡣ profile
   <20>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pgsql/data/base/dbname Ŀ¼<C4BF>¡<EFBFBD><C2A1>ͻ<EFBFBD><CDBB><EFBFBD> profile <20>ļ<EFBFBD><C4BC><EFBFBD>
   <20><><EFBFBD>ڿͻ<DABF><CDBB>˵<EFBFBD>ǰĿ¼<C4BF>¡<EFBFBD><C2A1><EFBFBD> Linux <20><>֧<EFBFBD><D6A7> profiling Ҫ<>ڱ<EFBFBD><DAB1><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>/-
   DLINUX_PROFILE / <20><> 3.8) Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ӵ<EFBFBD>¼ʱ<C2BC>յ<EFBFBD><D5B5><EFBFBD>Sorry, too many
   clients<74><73><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2> <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ʱ֧<CAB1>ֵIJ<D6B5><C4B2><EFBFBD><EFBFBD><EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 32 <20><><EFBFBD>̡<EFBFBD><CCA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD> /-N/ ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> postmaster
   <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD> /postgresql.conf/ <20>ļ<EFBFBD><C4BC><EFBFBD> Ҫע<D2AA><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /-N/
   <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD> 32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /-B/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<C8B1><CAA1> 64<36><34>-B <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> -N
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>˸<EFBFBD><CBB8>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ܿ<EFBFBD><DCBF><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>Ǹ<EFBFBD><C7B8><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>󡣶<EFBFBD>
   <20>ڴ<EFBFBD><DAB4><EFBFBD>Ŀ<EFBFBD>ĺ<EFBFBD><C4BA>˽<EFBFBD><CBBD>̣<EFBFBD><CCA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܻ<EFBFBD><DCBB>ᷢ<EFBFBD><E1B7A2><EFBFBD>㻹<EFBFBD><E3BBB9>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Unix
   <20>ں<EFBFBD><DABA><EFBFBD><EFBFBD>ò<EFBFBD><C3B2><EFBFBD>ֵ<EFBFBD><D6B5>
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   <20><>
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   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF>NFILE <20><> NINODE <20><>Postgres <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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   /include/storage/sinvaladt.h/ <20><><EFBFBD><EFBFBD> MaxBackendId <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BUILD<4C><44>
   3.9) pgsql_tmp Ŀ¼<C4BF>ﶼ<EFBFBD><EFB6BC>Щʲô<CAB2><C3B4>
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   <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򣬲<EFBFBD><F2A3ACB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>Ⱥ<EFBFBD>̨<EFBFBD><CCA8> -S
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD><EFBFBD>Ŀռ䣬<D5BC><E4A3AC>ô<EFBFBD>ͻᴴ<CDBB><E1B4B4>һ<EFBFBD><D2BB> <20><>ʱ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>
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   <20><> <20><><EFBFBD><EFBFBD> postmaster <20><><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>Щ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD> 3.10) ΪʲôҪ<C3B4><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD>汾ʱ<E6B1BE><CAB1> dump <20><> restore <20><> PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><CBBD>ٵ<EFBFBD><D9B5>޸<EFBFBD>,<2C><><EFBFBD>˴<EFBFBD> 7.2 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.2.1 <20><><EFBFBD><EFBFBD>Ҫ
   dump <20><> restore<72><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 7.2 <20><> 7.3<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD>ϵ
   ͳ<><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><DDB1><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD>Щ<EFBFBD>仯һ<E4BBAF><D2BB><EFBFBD>Ƚϸ<C8BD><CFB8>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD>ά<EFBFBD><CEAC><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>
   <20><> <20><><EFBFBD>ݡ<EFBFBD>dump
   <20><><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>ͨ<EFBFBD>õĸ<C3B5>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>ز<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>µ<EFBFBD><C2B5>ڲ<EFBFBD><DAB2><EFBFBD>ʽ<EFBFBD><CABD>
   <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>ʽû<CABD>б仯<D0B1><E4BBAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /pg_upgrade/ <20>ű<EFBFBD><C5B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA> dump
   <20><> restor<6F><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>script <20><>ָ<EFBFBD><D6B8> /pg_upgrade/ <20>Ըô<D4B8><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD>á<EFBFBD>
   ----------------------------------------------------------------------
   -- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.1) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>α<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> <20><><EFBFBD><EFBFBD> DECLARE
   <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1>Ϣ<EFBFBD><CFA2> 4.2)<29><><EFBFBD><EFBFBD>ֻ SELECT һ<><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>У<EFBFBD> <20><><EFBFBD><EFBFBD> FETCH
   <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> SELECT ... LIMIT....
   <20><>ʹ<EFBFBD><CAB9>ֻ<EFBFBD><D6BB>Ҫ<EFBFBD><D2AA>ͷ<EFBFBD>ļ<EFBFBD><C4BC>У<EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD>漰<EFBFBD><E6BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ô<EFBFBD><C3B4><EFBFBD> ORDER BY <20>IJ<EFBFBD>
   ѯ<><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY ƥ<>䣬PostgreSQL
   <20><><EFBFBD>ܾ<EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD>
   <20><>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>򽫶<EFBFBD><F2BDABB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>д<EFBFBD><D0B4><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>С<EFBFBD> 4.3)
   <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /psql/ <20>￴<EFBFBD><EFBFB4><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD> /psql/ <20><>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>/pgsql/src/bin/psql/describe.c/
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ <20><><EFBFBD><EFBFBD> psql <20>ķ<EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SQL <20><><EFBFBD><EFBFBD>㻹<EFBFBD><E3BBB9><EFBFBD>Դ<EFBFBD> /-E/
   ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> /psql/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õIJ<C3B5>ѯ<EFBFBD><D1AF> 4.4)
   <20><><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE>һ<EFBFBD>У<EFBFBD> 7.3 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ALTER TABLE DROP
   COLUMN<4D><4E><EFBFBD><EFBFBD>֧<EFBFBD>ִ<EFBFBD><D6B4><EFBFBD>ܡ<EFBFBD><DCA1><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>İ汾<C4B0>У<EFBFBD><D0A3><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BEGIN; LOCK
   TABLE old_table; SELECT ... -- select all columns but the one you want
   to remove INTO TABLE new_table FROM old_table; DROP TABLE old_table;
   ALTER TABLE new_table RENAME TO old_table; COMMIT; 4.5)
   һ<>У<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><DFB4>Ƕ<EFBFBD><C7B6>٣<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD>ƣ<EFBFBD>
   һ<><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ磿 <20><><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD><EFBFBD><EFBFBD> 1TB <20><><EFBFBD><EFBFBD><EFBFBD>ݿ⣩ һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ磿
   16TB һ<>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ磿 1.6TB һ<><D2BB><EFBFBD>ֶε<D6B6><CEB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD>? 1GB һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD>,250-1600
   һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>Ȼ<EFBFBD><C8BB>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ܿ<EFBFBD><DCBF>ô<EFBFBD><C3B4>̿ռ䡢<D5BC><E4A1A2><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>Լ<EFBFBD><D4BC> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD> 16 TB <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>ϵͳ<CFB5>Դ<EFBFBD><D4B4>ļ<EFBFBD><C4BC><EFBFBD>֧<EFBFBD>֡<EFBFBD><D6A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD><C3B6><EFBFBD> 1 GB
   <20><><EFBFBD>ļ<EFBFBD> <20>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<CFB5>ߴ<EFBFBD><DFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2><EFBFBD>Ҫ<EFBFBD>ġ<EFBFBD> <20><><EFBFBD><EFBFBD>ȱʡ<C8B1>Ŀ<EFBFBD><C4BF><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   32K <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1>ߴ<EFBFBD><DFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD>
   4.6)<29>洢һ<E6B4A2><D2BB><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ٴ<EFBFBD><D9B4>̿ռ䣿 һ<><D2BB> Postgres
   <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>൱<EFBFBD><E0B5B1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>洢<EFBFBD><E6B4A2>ͬ<EFBFBD><CDAC><EFBFBD>ݵ<EFBFBD>5<EFBFBD><35> <20>Ĵ<EFBFBD><C4B4>̿ռ䡣
   <20><><EFBFBD>磬<EFBFBD><E7A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> 100,000
   <20>е<EFBFBD><D0B5>ļ<EFBFBD><C4BC><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ20<32>ֽڡ<D6BD>ƽ<EFBFBD><C6BD><EFBFBD>ļ<EFBFBD>ռ<EFBFBD><D5BC> 2.8 MB<4D><42><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݵ<EFBFBD> PostgreSQL
   <20><><EFBFBD>ݿ<EFBFBD><DDBF>ļ<EFBFBD><C4BC><EFBFBD>Լ<EFBFBD><D4BC> 6.4 MB: 36 <20>ֽ<EFBFBD>: ÿ<>е<EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5> 24 <20>ֽ<EFBFBD>:
   һ<><D2BB>int<6E>ֶκ<D6B6>һ<EFBFBD><D2BB><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD>ֶ<EFBFBD> + 4 <20>ֽ<EFBFBD>: ҳ<><D2B3><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
   ---------------------------------------- 64 <20>ֽ<EFBFBD>ÿ<EFBFBD><C3BF> PostgreSQL
   <20><><EFBFBD><EFBFBD>ҳ<EFBFBD>Ĵ<EFBFBD>С<EFBFBD><D0A1> 8192 <20>ֽ<EFBFBD> (8 KB)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 8192 <20>ֽ<EFBFBD>ÿҳ
   ------------------- = 128 <20><>/<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD> 64 <20>ֽ<EFBFBD>ÿ<EFBFBD><C3BF> 100000
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> -------------------- = 782 <20><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD> 128 <20><>ÿҳ 782
   <20><><EFBFBD><EFBFBD>ҳ * 8192 <20>ֽ<EFBFBD>/ҳ = 6,406,144 <20>ֽڣ<D6BD>6.4 MB<4D><42>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ô<EFBFBD><C3B4><EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD>Ҳȷʵ<C8B7><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD>ܺ<EFBFBD>
   <20><><EFBFBD><EFBFBD> <20><>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<CEBB>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>ú<EFBFBD><C3BA>ٵĿռ䡣 4.7)
   <20><><EFBFBD>β鿴<CEB2><E9BFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>Լ<EFBFBD><D4BC>û<EFBFBD><C3BB>Ķ<EFBFBD><C4B6>壿 / psql/
   <20><><EFBFBD><EFBFBD><EFBFBD>෴б<E0B7B4><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD> \? <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD><EFBFBD> pg_ <20><>
   ͷ<><CDB7>ϵͳ<CFB5><CDB3>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>Ϣ<EFBFBD><CFA2> psql -l <20><><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD><D0B3><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>ݿ⡣
   Ҳ<><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>
   /pgsql/src/tutorial/syscat.source/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>
   ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1>Ϣ<EFBFBD><CFA2>Ҫ<EFBFBD><D2AA> SELECT<43><54> 4.8)
   <20>ҵIJ<D2B5>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊʲô<CAB2><C3B4>
   <20><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD>ڱ<EFBFBD><DAB1>Ĵ<EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>Сֵ<D0A1><D6B5><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD>ѯֻ
   ѡ
   <20><><EFBFBD><EFBFBD><EFBFBD>н<EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>漴<EFBFBD><E6BCB4><EFBFBD>̴<EFBFBD>ȡ<EFBFBD><C8A1>
   <20><> <20><>ֱ<EFBFBD>ӵض<D3B5>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>˳<EFBFBD><CBB3>ɨ<EFBFBD>裩<EFBFBD><E8A3A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ж<EFBFBD><D0B6>Ƿ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>йر<D0B9><D8B1><EFBFBD>ͳ<EFBFBD><CDB3>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Щͳ<D0A9><CDB3>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> VACUUM ANALYZE<5A><45><EFBFBD><EFBFBD> ANALYZE
   <20><><EFBFBD>á<EFBFBD>ʹ
   <20><>ͳ<EFBFBD><CDB3>ֵ<EFBFBD><D6B5><EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><EFBFBD>õ<EFBFBD><C3B5>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD><CDB3>ֵ
   <20><>
   ȷ<><C8B7><EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӷ<EFBFBD><D3B7><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD><C3A1>ڱ<EFBFBD><DAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݷ<EFBFBD><DDB7><EFBFBD><EFBFBD>仯ʱ<E4BBAF><CAB1>Ӧ<EFBFBD><D3A6><EFBFBD>ڽ<EFBFBD><DABD><EFBFBD>
   ͳ <20><>ֵ<EFBFBD>Ļ<EFBFBD>ȡ<EFBFBD><C8A1> <20><><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ORDER BY
   <20><>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>˳<EFBFBD><CBB3>ɨ<EFBFBD>裬<EFBFBD><E8A3AC><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
   ʽ<><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɨ<EFBFBD><C9A8>Ҫ<EFBFBD>졣 <20><><EFBFBD>ǣ<EFBFBD><C7A3><EFBFBD> LIMIT <20><> ORDER BY <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>ʱ<EFBFBD><CAB1>
   <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊֻ<CEAA>᷵<EFBFBD>ر<EFBFBD><D8B1><EFBFBD>һ С<><D0A1><EFBFBD>֡<EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD>Ȼ MAX() <20><> MIN()
   <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD> ORDER BY <20><> LLIMIT
   ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>СֵҲ<D6B5>ǿ<EFBFBD><C7BF>Եģ<D4B5> SELECT col FROM tab ORDER BY
   col [ DESC ] LIMIT 1; <20><>ʹ<EFBFBD><CAB9>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LIKE <20><> ~
   ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD> *
   <20>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>Ŀ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5> o LIKE ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> %
   <20><>ͷ<EFBFBD><CDB7> o ~ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD>ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ^ <20><>ͷ<EFBFBD><CDB7> *
   <20>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>ģʽ<C4A3><CABD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [a-e]<5D><> *
   <20><>Сд<D0A1>޹صIJ<D8B5><C4B2>ң<EFBFBD><D2A3><EFBFBD> ILIKE <20><> ~* <20>Ȳ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.12 <20><><EFBFBD><EFBFBD>
   <20><><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> * <20><><EFBFBD><EFBFBD> initdb ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<C8B1>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> C locale<6C><65> 4.9)
   <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2>ܿ<EFBFBD><DCBF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵIJ<D2B5>ѯ<EFBFBD>ģ<EFBFBD> <20>ο<EFBFBD> EXPLAIN <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>
   4.10) R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4> R-tree
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD>ݡ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> B-tree <20><>
   <20><>ֻ<EFBFBD>ܴ<EFBFBD><DCB4><EFBFBD>һά<D2BB>ķ<EFBFBD>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>R-tree
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>ά<EFBFBD><CEAC><EFBFBD>ݡ<EFBFBD><DDA1><EFBFBD><EFBFBD>磬<EFBFBD><E7A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ point
   <20><><EFBFBD>ֶ<EFBFBD><D6B6>Ͻ<EFBFBD><CFBD><EFBFBD>һ<EFBFBD><D2BB> R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôϵͳ<CFB5>ܸ<EFBFBD><DCB8><EFBFBD>Ч<EFBFBD>ػش<D8BB><D8B4><EFBFBD> <20><>
   <20><>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>η<EFBFBD>Χ<EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD>е㡱<D0B5><E3A1B1> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> R-Tree
   <20><><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ǣ<EFBFBD> Guttman, A. "R-Trees: A Dynamic Index Structure for
   Spatial Searching." Proc of the 1984 ACM SIGMOD Int'l Conf on Mgmt of
   Data, 45-57. <20>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Stonebraker <20>ġ<EFBFBD>Readings in Database
   Systems<6D><73><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD>ƪ<EFBFBD><C6AA><EFBFBD>¡<EFBFBD> ϵͳ<CFB5><CDB3><EFBFBD>õ<EFBFBD> R-Tree
   <20><><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κͷ<CEBA><CDB7>Ρ<EFBFBD><CEA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>R-tree <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չΪ<D5B9><CEAA><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>ά<EFBFBD><CEAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD>չ R-trees
   <20><>Ҫһ<D2AA><D2BB><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀǰû<C7B0><C3BB><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD> 4.11)
   ʲô<CAB2>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>Genetic Query Optimization<6F><6E><EFBFBD><EFBFBD> GEQO
   ģ<><C4A3><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>㷨<EFBFBD><E3B7A8>Genetic Algorithm<68><6D>GA<47><41><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵIJ<D3B5>ѯ<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF> 4.12)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>Сд<D0A1>޹<EFBFBD><DEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ~ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽƥ<CABD>䣬<EFBFBD><E4A3AC> ~*
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Сд<D0A1>޹ص<DEB9><D8B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽƥ<CABD>䡣<EFBFBD><E4A1A3>д Щ<>޹ص<DEB9> LIKE <20><><EFBFBD>ֳ<EFBFBD>Ϊ ILIKE<4B><45>
   <20><>Сд<D0A1>޹صĵ<D8B5>ʽ<EFBFBD>Ƚ<EFBFBD>ͨ<EFBFBD><CDA8>д<EFBFBD><D0B4><EFBFBD><EFBFBD> SELECT * FROM tab WHERE lower(col) =
   'abc'; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ñ<EFBFBD>׼<EFBFBD><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF>Դ<EFBFBD><D4B4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ɱ<EFBFBD><C9B1><EFBFBD><EFBFBD>õĺ<C3B5><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
   CREATE INDEX tabindex ON tab (lower(col)); 4.13)
   <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֶ<EFBFBD><D6B6>Ƿ<EFBFBD>Ϊ NULL<4C><4C> <20><> IS NULL <20><> IS NOT
   NULL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΡ<D6B6> 4.14) <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ʲô<CAB2><C3B4>ͬ<EFBFBD><CDAC> <20><><EFBFBD><EFBFBD> <20>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>
   ˵<><CBB5> -------------------------------------------------- "char" char
   1<><31><EFBFBD>ַ<EFBFBD> character CHAR(#) bpchar
   <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><DDB2>㶨<EFBFBD>峤<EFBFBD><E5B3A4>ʱ<EFBFBD><CAB1><EFBFBD>Կո<D4BF><D5B8><EFBFBD><EFBFBD><EFBFBD> VARCHAR(#) varchar
   ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󳤶ȣ<F3B3A4B6><C8A3>䳤<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>㶨<EFBFBD>峤<EFBFBD>ȵIJ<C8B5><C4B2><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> TEXT text
   <20><><EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD><C8BD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>󳤶<EFBFBD><F3B3A4B6><EFBFBD><EFBFBD><EFBFBD> BYTEA bytea
   <20>䳤<EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>У<EFBFBD><D0A3>䳤<EFBFBD>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD>
   <20><>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>㽫<EFBFBD><E3BDAB><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD>ơ<EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"varlena"<22><><EFBFBD>䳤<EFBFBD><E4B3A4><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD>ĸ<EFBFBD><C4B8>ֽ<EFBFBD><D6BD>dz<EFBFBD>
   <20>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5>ռ<EFBFBD>õĿռ<C4BF><D5BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD>СҪ<D0A1><D2AA>һЩ<D2BB><D0A9>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD>ѹ<EFBFBD><D1B9><EFBFBD>洢<EFBFBD><E6B4A2>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> TOAST
   <20>ѻ<EFBFBD><D1BB>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4>̿ռ<CCBF>Ҳ<EFBFBD><D2B2><EFBFBD>ܱ<EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD>Ҫ<EFBFBD>١<EFBFBD> CHAR(n)
   <20><><EFBFBD>ʺ<EFBFBD><CABA>ڴ洢<DAB4><E6B4A2><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EEB2BB><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>VARCHAR(n) <20>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ȵı䳤<C4B1>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õġ<C3B5>TEXT <20><><EFBFBD><EFBFBD><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD>Ƴ<EFBFBD><C6B3>ȵ<EFBFBD><C8B5>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɴ<EFBFBD>
   1G<31><47>BYTEA <20><><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD> NULL
   <20>ֽڣ<D6BD><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD> Щ<><D0A9><EFBFBD>;<EFBFBD><CDBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD>ܡ<EFBFBD> 4.15.1)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD>/<2F>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> PostgreSQL ֧<><D6A7> SERIAL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD><CDA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>磬 CREATE TABLE person
   ( id SERIAL, name TEXT ); <20><><EFBFBD>Զ<EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA> CREATE SEQUENCE
   person_id_seq; CREATE TABLE person ( id INT4 NOT NULL DEFAULT
   nextval('person_id_seq'), name TEXT ); CREATE UNIQUE INDEX
   person_id_key ON person ( id ); <20>ο<EFBFBD> create_sequence
   <20>ֲ<EFBFBD>ҳ<EFBFBD><D2B3>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еĸ<D0B5><C4B8><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>㻹<EFBFBD><E3BBB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD>е<EFBFBD> oid
   <20>ֶ<EFBFBD><D6B6><EFBFBD>Ϊһ<CEAA><D2BB>Ψһֵ<D2BB><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>㵹<EFBFBD><E3B5B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ⣬<DDBF><E2A3AC><EFBFBD><EFBFBD>Ҫʹ<D2AA><CAB9>
   pg_dump <20><> -o ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> COPY WITH OIDS ѡ<><D1A1><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD> OID<49><44> 4.15.2)
   <20><><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кŵ<D0BA>ֵ<EFBFBD><D6B5> һ<>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD>֮ǰ<D6AE><C7B0><EFBFBD>ú<EFBFBD><C3BA><EFBFBD>
   nextval() <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> SERIAL ֵ<><D6B5>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>롣ʹ<EBA1A3><CAB9>
   4.15.1 <#4.15.1> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD><CEB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> new_id = execute("SELECT
   nextval('person_id_seq')"); execute("INSERT INTO person (id, name)
   VALUES (new_id, 'Blaise Pascal')"); <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF>ʹ<EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD>
   new_id <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD>磬<EFBFBD><E7A3AC>Ϊ person <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   SEQUENCE <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD>
   
   __seq<65><71><EFBFBD><EFBFBD><EFBFBD><EFBFBD> table <20><> serialcolumn <20>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD> <20>ƺ<EFBFBD><C6BA><EFBFBD><EFBFBD><EFBFBD> SERIAL
   <20>ֶε<D6B6><CEB5><EFBFBD><EFBFBD>ơ<EFBFBD> <20><><EFBFBD>Ƶģ<C6B5><C4A3><EFBFBD> SERIAL <20><><EFBFBD><EFBFBD>ȱʡ<C8B1><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD> currval()
   <20><><EFBFBD><EFBFBD><EFBFBD>ո<EFBFBD>ֵ<EFBFBD><D6B5> SERIAL ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD>磬 execute("INSERT INTO person (name)
   VALUES ('Blaise Pascal')"); new_id = execute("SELECT
   currval('person_id_seq')"); <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ô<EFBFBD> INSERT <20><><EFBFBD>䷵<EFBFBD>ص<EFBFBD> OID
   <4.16> <20><><EFBFBD><EFBFBD>ȱʡֵ<CAA1><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ȱ<EFBFBD><C8B1><EFBFBD><EFBFBD>ֲ<EFBFBD>Եķ<D4B5><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Perl
   <20>ʹ<EFA3AC>ô<EFBFBD><C3B4><EFBFBD> Edmund Mergl <20><> DBD::Pg ģ<><C4A3><EFBFBD><EFBFBD> DBI<42><49>oid ֵ<><D6B5><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>
   $sth->execute() <20><><EFBFBD><EFBFBD> $sth->{pg_oid_status} <20><><EFBFBD>á<EFBFBD> 4.15.3) ʹ<><CAB9>
   currval() <20><> nextval() <20>ᵼ<EFBFBD><E1B5BC>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ᡣcurrval() <20><><EFBFBD>غ<EFBFBD>̨<EFBFBD><CCA8><EFBFBD>̶<EFBFBD><CCB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ǰֵ<C7B0><D6B5> 4.15.4)
   Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>쳣<EFBFBD><ECB3A3>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>أ<EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><D0BA>ֶ<EFBFBD>
   <20><>ȡֵ<C8A1>д<EFBFBD><D0B4>ڼ<EFBFBD><DABC><EFBFBD><EFBFBD>أ<EFBFBD>
   Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD>߲<EFBFBD><DFB2><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD>к<EFBFBD><D0BA><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD>񣬲<EFBFBD><F1A3ACB2><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   ֮ ǰ<><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͻᵼ<CDBB><E1B5BC>ز<EFBFBD><D8B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>кų<D0BA><C5B3>ּ<EFBFBD><D6BC><EFBFBD><EFBFBD><EFBFBD> 4.16) ʲô<CAB2><C3B4>
   OID<49><44>ʲô<CAB2><C3B4> TID<49><44> OID <20><> PostgreSQL <20><><EFBFBD>е<EFBFBD>Ψһ<CEA8><D2BB>ʶ<EFBFBD><CAB6>PostgreSQL
   <20>ﴴ<EFBFBD><EFB4B4><EFBFBD><EFBFBD>ÿһ<C3BF>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ψ һ<><D2BB> OID<49><44><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> initdb <20><><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD> OID
   <20><>С<EFBFBD><D0A1> 16384 <20><><EFBFBD>μ<EFBFBD> include/access/transam.h<><68><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID
   <20><><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD><DABB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>ȱʡ ʱ<><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ OID
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>Ψһ<CEA8><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PostgreSQL
   <20><>װ<EFBFBD><D7B0>Ҳ<EFBFBD><D2B2>Ψһ<CEA8>ġ<EFBFBD> PostgreSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> OID
   <20>ڱ<EFBFBD>֮<EFBFBD>佨<EFBFBD><E4BDA8><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD>Щ OID <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20>ڱ<EFBFBD>ʶ<EFBFBD>ض<EFBFBD><D8B6><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFA1A3><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD> OID <20>洢 OID
   ֵ<><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> OID <20>ֶ<EFBFBD><D6B6>ϴ<EFBFBD><CFB4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><D4BF>ٷ<EFBFBD><D9B7>ʡ<EFBFBD> OID
   <20><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ʹ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>︳ֵ<EFB8B3><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OID <20><>
   <20>ɱ<EFBFBD><C9B1><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>ݱ<EFBFBD><DDB1>Ĵ<EFBFBD><C4B4>ʼ OID <20>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CREATE TABLE
   new(old_oid oid, mycol int); SELECT old_oid, mycol INTO new FROM old;
   COPY new TO '/tmp/pgtable'; DELETE FROM new; COPY new WITH OIDS FROM
   '/tmp/pgtable'; OID
   <20><>4<EFBFBD>ֽڵ<D6BD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>棬<EFBFBD>ڳ<EFBFBD><DAB3><EFBFBD>40<34><30>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD>˱<EFBFBD><CBB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˱<EFBFBD><CBB1><EFBFBD>֮ǰ<D6AE><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD> TID
   <20><><EFBFBD>ڱ<EFBFBD>ʶ<EFBFBD><CAB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ飨<DDBF><E9A3A8>ַ<EFBFBD><D6B7><EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD>ڣ<EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD><C6B5>ض<EFBFBD><D8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD>TID <20><><EFBFBD>б<EFBFBD><D0B1><EFBFBD>
   <20>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>غ<EFBFBD><D8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı䡣<C4B1><E4A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD> 4.17) PostgreSQL
   ʹ<>õ<EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD>ʲô<CAB2><C3B4>
   һЩԴ<D0A9><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ʹ<EFBFBD><CAB9>һЩ<D2BB>и<EFBFBD><D0B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>÷<EFBFBD><C3B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFA1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
   <20>֣<EFBFBD> table, relation, class row, record, tuple column, field,
   attribute retrieve, select replace, update append, insert OID, serial
   value portal, cursor range variable, table name, table alias
   <20><>һ<EFBFBD><D2BB>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><D0B1><EFBFBD>http://hea-
   www.harvard.edu/MST/simul/software/docs/pkgs/pgsql/glossary/glossary.h
   tml <20><> 4.18) Ϊʲô<CAB2><C3B4><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ERROR: Memory exhausted in
   AllocSetAlloc()/<2F><><EFBFBD><EFBFBD>
   <20><><EFBFBD>ܿ<EFBFBD><DCBF><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>ù<EFBFBD><C3B9>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں˶<DABA>ijЩ<C4B3><D0A9>Դ<EFBFBD>нϵ͵<CFB5><CDB5><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><> postmaster ֮ǰ<D6AE><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ulimit -d 262144 limit datasize
   256m ȡ<><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>
   shell<6C><6C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB>һ<EFBFBD><D2BB><EFBFBD>ܳɹ<DCB3><C9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD><EFBFBD><EFBFBD>
   <20><><EFBFBD>ñȽϸߣ<CFB8><DFA3><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>ɡ<EFBFBD><C9A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD>ڵ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>̣<EFBFBD><CCA3>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к󴴽<D0BA><F3B4B4BD><EFBFBD><EFBFBD>ӽ<EFBFBD><D3BD>̡<EFBFBD><CCA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SQL<51>ͻ<EFBFBD><CDBB><EFBFBD>ʱ<EFBFBD><CAB1>Ϊ<EFBFBD><CEAA>̨<EFBFBD><CCA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̫<EFBFBD><CCAB><EFBFBD><EFBFBD><EFBFBD>
   <20> <20>ݶ<EFBFBD><DDB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><E2A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>пͻ<D0BF><CDBB><EFBFBD>֮ǰִ<C7B0><D6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.19)
   <20><><EFBFBD><EFBFBD><EFBFBD>β<EFBFBD><CEB2><EFBFBD>֪<EFBFBD><D6AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD> PostgreSQL <20>İ汾<C4B0><E6B1BE> <20><> psql <20><EFBFBD><EFA3AC><EFBFBD><EFBFBD> SELECT
   version()<29><> 4.20) Ϊʲô<CAB2>ҵĴ<D2B5><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD>/invalid large obj
   descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><>
   <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ʹ<EFBFBD><CAB9><EFBFBD>κδ<CEBA><CEB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BEGIN WORK <20><>
   COMMIT<49><54>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD> Χ lo_open ... lo_close<73><65> Ŀǰ PostgreSQL
   ǿ<><C7BF>ʵʩ<CAB5><CAA9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ύʱ<E1BDBB>رմ<D8B1><D5B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û
   <20>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>״ζԴ<CEB6><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ᵼ<EFBFBD><E1B5BC>һ<EFBFBD><D2BB> invalid
   large obj
   descriptor<6F><72><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB>ʹ<EFBFBD><CAB9>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4>루<EFBFBD><EBA3A8>
   <20><><EFBFBD>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䣩<EFBFBD><E4A3A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ôһ<C3B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ÿͻ<C3BF><CDBB>˽ӿڣ<D3BF><DAA3><EFBFBD>
   ODBC<42><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ set auto-commit off<66><66> 4.21)
   <20><><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>һ<EFBFBD><D2BB>ȱʡֵ<CAA1>ǵ<EFBFBD>ǰʱ<C7B0><CAB1><EFBFBD><EFBFBD><EFBFBD>ֶΣ<D6B6> ʹ<><CAB9> CURRENT_TIMESTAMP<4D><50> CREATE
   TABLE test(x int, modtime timestamp DEFAULT CURRENT_TIMESTAMP); 4.22)
   Ϊʲôʹ<C3B4><CAB9> IN <20><><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF>ô<EFBFBD><C3B4><EFBFBD><EFBFBD>
   Ŀǰ<C4BF><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF>ÿһ<C3BF><D2BB>˳<EFBFBD><CBB3>ɨ<EFBFBD><C9A8><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ
   <20><> <20><><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD>غܶ<D8BA><DCB6>У<EFBFBD>IN
   ִ<>еúܿ졣Ϊ<ECA1A3>˼ӿ<CBBC><D3BF><EFBFBD><EFBFBD><EFBFBD> IN <20><>ѯ<EFBFBD><D1AF>ִ<EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> EXISTS <20>滻 IN<49><4E> SELECT
   * FROM tab WHERE col IN (SELECT subcol FROM subtab); <20><>Ϊ<EFBFBD><CEAA> SELECT *
   FROM tab WHERE EXISTS (SELECT subcol FROM subtab WHERE subcol = col);
   <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ִ<EFBFBD>еø<D0B5><C3B8>죬subcol
   Ӧ<><D3A6><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD>汾<EFBFBD><E6B1BE> <20>޲<EFBFBD><DEB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD> 4.23)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> outer join <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD> PostgreSQL <20><><EFBFBD>ñ<EFBFBD>׼<EFBFBD><D7BC> SQL
   <20>﷨֧<EFB7A8><D6A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD> SELECT * FROM t1 LEFT OUTER JOIN t2
   ON (t1.col = t2.col); <20><> SELECT * FROM t1 LEFT OUTER JOIN t2 USING
   (col); <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ۵IJ<DBB5>ѯ<EFBFBD><D1AF> t1.col <20><> t2.col <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD>ҷ<EFBFBD><D2B7><EFBFBD>?t1
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD>ӵ<EFBFBD> <20>У<EFBFBD><D0A3><EFBFBD>Щ<EFBFBD><D0A9> t2 <20><>û<EFBFBD><C3BB>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD><EFBFBD>(RIGHT OUTER
   JOIN)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t2 <20><> δ<><CEB4><EFBFBD>ӵ<EFBFBD><D3B5>С<EFBFBD><D0A1><EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>FULL OUTER JOIN<49><4E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> t1
   <20><> t2 <20><>δ<EFBFBD><CEB4><EFBFBD>ӵ<EFBFBD><D3B5>С<EFBFBD> <20>ؼ<EFBFBD><D8BC><EFBFBD> OUTER
   <20><><EFBFBD><EFBFBD>[<5B><>]<5D><><EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD>[<5B><>]<5D><><EFBFBD>Ӻ<EFBFBD><D3BA><EFBFBD>ȫ[<5B><>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>ѡ<EFBFBD>ģ<EFBFBD><C4A3><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>INNER JOIN<49><4E><EFBFBD><EFBFBD> <20>ڴ<EFBFBD>ǰ<EFBFBD>İ汾<C4B0>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD> UNION <20><> NOT
   IN <20><>ģ<EFBFBD>⡣<EFBFBD><E2A1A3><EFBFBD>磬<EFBFBD><E7A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> tab1 <20><> tab2 ֮<><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD> SELECT
   tab1.col1, tab2.col2 FROM tab1, tab2 WHERE tab1.col1 = tab2.col1 UNION
   ALL SELECT tab1.col1, NULL FROM tab1 WHERE tab1.col1 NOT IN (SELECT
   tab2.col1 FROM tab2) ORDER BY col1 4.24)
   <20><><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>漰<EFBFBD><E6BCB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF>
   û<>а취<D0B0><ECB7A8>ѯ<EFBFBD><D1AF>ǰ<EFBFBD><C7B0><EFBFBD>ݿ<EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ⡣<DDBF><E2A1A3>Ϊ PostgreSQL
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD>ص<EFBFBD>ϵͳ Ŀ¼<C4BF><C2BC>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>IJ<EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>Ҳδ<D2B2><CEB4>ȷ<EFBFBD><C8B7>
   contrib/dblink
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֿ<EFBFBD><D6BF><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><D1AF><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD><EFBFBD>ͬʱ<CDAC><CAB1><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD>
   <20>ݿⲢ<DDBF>ڿͻ<DABF><CDBB>˺ϲ<CBBA><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.25) <20><><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD><D8B6>л<EFBFBD><D0BB><EFBFBD><EFBFBD>У<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   PL/pgSQL <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9> refcursors <20><><EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ο<EFBFBD>
   http://www.PostgreSQL.org/idocs/index.php?plpgsql-cursors.html
   www.PostgreSQL.org/idocs/index.php?plpgsql-cursors.html>, 23.7.3.3<EFBFBD>ڡ<EFBFBD>
   4.26) Ϊʲô<CAB2><C3B4> PL/PgSQL <20><><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><D0B2>ܿɿ<DCBF><C9BF>ش<EFBFBD><D8B4><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD> PL/PgSQL
   <20><><EFBFBD>溯<EFBFBD><E6BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3>ɴ˴<C9B4><CBB4><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>õĸ<C3B5><C4B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> PL/PgSQL <20><>
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ȼ<EFBFBD><C8BB><EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>ɾ<EFBFBD><C9BE><EFBFBD><EFBFBD><EFBFBD>ؽ<EFBFBD><D8BD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD>ٴε<D9B4><CEB5>øú<C3B8><C3BA><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD>
   Ϊ <20><><EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼָ<C8BB><D6B8><EFBFBD>ɵ<EFBFBD><C9B5><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PL/PgSQL <20><><EFBFBD><EFBFBD>
   EXECUTE <20><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>з<EFBFBD><D0B7>ʡ<EFBFBD><CAA1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ᱣ֤<E1B1A3><D6A4>ѯ<EFBFBD><D1AF>ִ<EFBFBD><D6B4>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD><EFBFBD> 4.27)
   <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݸ<EFBFBD><DDB8><EFBFBD>ѡ<EFBFBD>
   <20>м<EFBFBD><D0BC><EFBFBD><EFBFBD><EFBFBD>/<2F>ӷ<EFBFBD>ʽ<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>ѡ<EFBFBD><EFBFBD><EEA1A3>Щѡ<D0A9><D1A1>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD>и<EFBFBD><D0B8>£<EFBFBD><C2A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>ֻ<EFBFBD>
   <20> <20><><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>ҳ
   http://gborg.PostgreSQL.org/genpage?replication_research
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD><D0B3><EFBFBD><EFBFBD><EFBFBD>Щѡ<D0A9><EFBFBD><EEA1A3>
   http://gborg.PostgreSQL.org/project/pgreplication/projdisplay.php
   gborg.PostgreSQL.org/project/pgreplication/projdisplay.php> <20><><EFBFBD><EFBFBD>
   <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƵĽ<C6B5><C4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4.28) <20><><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>ѡ<EFBFBD>
   contrib/pgcrypto <20><><EFBFBD><EFBFBD><EFBFBD>˺ܶ<CBBA><DCB6><EFBFBD> SQL
   <20><>ѯ<EFBFBD><D1AF>ʹ<EFBFBD>õļ<C3B5><C4BC>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܿͻ<DCBF><CDBB>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>˴<EFBFBD><CBB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>Ψһ<CEA8><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   pg_hba.conf <20>в<EFBFBD><D0B2><EFBFBD> hostss <20><> 7.3
   <20>汾<EFBFBD><E6B1BE><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD><D0BC>ܡ<EFBFBD><DCA1><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>İ汾<C4B0>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   postgresql.conf <20>д<EFBFBD><D0B4><EFBFBD> PASSWORD_ENCRYPTION
   ѡ<><EFBFBD><EEA1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD><DABC>ܵ<EFBFBD> <20>ļ<EFBFBD>ϵͳ<CFB5>ϣ<EFBFBD><CFA3>Դﵽ<D4B4><EFB5BD><EFBFBD>ܵ<EFBFBD>Ŀ<EFBFBD>ģ<EFBFBD><C4A3><EFBFBD>
   ----------------------------------------------------------------------
   ---------- <20><>չ PostgreSQL 5.1) <20><>д<EFBFBD><D0B4>һ<EFBFBD><D2BB><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>庯<EFBFBD><E5BAAF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> psql
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ϊʲô<CAB2>ᵼ<EFBFBD><E1B5BC> core dump<6D><70> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ
   <20><><EFBFBD>ܶࡣ<DCB6><E0A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><C4B2>Գ<EFBFBD><D4B3><EFBFBD><EFBFBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6>庯<EFBFBD><E5BAAF><EFBFBD><EFBFBD> 5.2) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD>
   PostgreSQL <20><><EFBFBD><EFBFBD>һЩͦ<D0A9><CDA6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͺͺ<CDBA><CDBA><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD><D5B9><EFBFBD>͵<EFBFBD>
   pgsql-hackers <20>ʼ<EFBFBD><CABC>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ջᱻ<D5BB>ŵ<EFBFBD> contrib/ <20><>Ŀ¼<C4BF><C2BC> 5.3)
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD> C <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> PostgreSQL 7.3 <20>Ժ<EFBFBD><D4BA>İ汾<C4B0>У<EFBFBD>C,
   PL/PgSQL <20><> SQL <20><>ȫ֧<C8AB>ַ<EFBFBD><D6B7><EFBFBD>ֵΪ<D6B5><CEAA><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD>ο<EFBFBD>
   <20><><EFBFBD><EFBFBD>Աָ<D4B1>ϣ<EFBFBD>the Programmer's Guide<64><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD> contrib/tablefunc
   <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> C д<>ķ<EFBFBD><C4B7><EFBFBD>ֵΪ<D6B5><CEAA><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD> 5.4)
   <20><><EFBFBD>޸<EFBFBD><DEB8><EFBFBD>һ<EFBFBD><D2BB>Դ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>Ϊʲô<CAB2><C3B4><EFBFBD>±<EFBFBD><C2B1><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><D0BF><EFBFBD><EFBFBD>ı䣿 Makefiles
   <20><>û<EFBFBD>а<EFBFBD><D0B0><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>make clean<61><6E> <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> make
   <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD> GCC <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Բ<EFBFBD><D4B2><EFBFBD>ѡ<EFBFBD><D1A1> --enable-depend <20>ñ<EFBFBD><C3B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>
   <20><><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5>