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PostgreSQL: PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣨FAQ<EFBFBD> <EFBFBD>
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< h1 > PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣨FAQ<EFBFBD> <EFBFBD> < / h1 >
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD> 2005 <EFBFBD> <EFBFBD> 06 <EFBFBD> <EFBFBD> 02 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 22:27:35 CST
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Ŀǰά<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> Bruce Momjian (< a href = "mailto:pgman@candle.pha.pa.us" > pgman@candle.pha.pa.us< / a > )< br / >
<EFBFBD> <EFBFBD> <EFBFBD> İ<EFBFBD> ά<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> doudou586 <EFBFBD> <EFBFBD> doudou586_2005@yahoo.com.cn<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> °汾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://www.postgresql.org/files/documentation/faqs/FAQ.html" > http://www.postgresql.org/files/documentation/faqs/FAQ.html< / a > <EFBFBD> 鿴<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳƽ̨ <EFBFBD> <EFBFBD> <EFBFBD> ص<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://www.postgresql.org/docs/faq/" > http://www.postgresql.org/docs/faq/< / a > <EFBFBD> <EFBFBD> <EFBFBD> ش<EFBFBD> <EFBFBD> <EFBFBD> < br / >
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< a href = "#1.1" > 1.1< / a > )PostgreSQL <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#1.2" > 1.2< / a > )PostgreSQL <EFBFBD> İ<EFBFBD> Ȩ<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> < br / >
< a href = "#1.3" > 1.3< / a > )PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳƽ̨ <EFBFBD> ϣ<EFBFBD> < br / >
< a href = "#1.4" > 1.4< / a > )<EFBFBD> Ҵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> < br / >
< a href = "#1.5" > 1.5< / a > )<EFBFBD> Ҵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> ֧ <EFBFBD> ֣ <EFBFBD> < br / >
< a href = "#1.6" > 1.6< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ύһ<EFBFBD> <EFBFBD> BUG<EFBFBD> <EFBFBD> <EFBFBD> 棿< br / >
< a href = "#1.7" > 1.7< / a > )<EFBFBD> <EFBFBD> <EFBFBD> °<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> < br / >
< a href = "#1.8" > 1.8< / a > )<EFBFBD> ܹ <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> < br / >
< a href = "#1.9" > 1.9< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˽<EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> BUG <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱ<EFBFBD> Ĺ<EFBFBD> <EFBFBD> ܣ<EFBFBD> < br / >
< a href = "#1.10" > 1.10< / a > )<EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѧϰ SQL <EFBFBD> <EFBFBD> < br / >
< a href = "#1.11" > 1.11< / a > )<EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 뿪<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 飿< br / >
< a href = "#1.12" > 1.12< / a > )PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Σ<EFBFBD> < br / >
< a href = "#1.13" > 1.13< / a > )˭<EFBFBD> <EFBFBD> <EFBFBD> ƺ<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD>
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< a href = "#2.1" > 2.1< / a > )<EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> Ժ<EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#2.2" > 2.2< / a > )<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> ߿<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Web ҳ<EFBFBD> 棿< br / >
< a href = "#2.3" > 2.3< / a > )PostgreSQL ӵ<EFBFBD> <EFBFBD> ͼ<EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
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< a href = "#3.1" > 3.1< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܰ <EFBFBD> PostgreSQL װ<EFBFBD> <EFBFBD> /usr/local/pgsql <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵط<EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#3.2" > 3.2< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ο<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> < br / >
< a href = "#3.3" > 3.3< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ի<EFBFBD> <EFBFBD> ø<EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܣ<EFBFBD> < br / >
< a href = "#3.4" > 3.4< / a > )PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ի<EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD> < br / >
< a href = "#3.5" > 3.5< / a > )Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͼ<EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> ¼ʱ<EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> Sorry, too many clients<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> < br / >
< a href = "#3.6" > 3.6< / a > )ΪʲôҪ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 汾ʱ<EFBFBD> <EFBFBD> dump <EFBFBD> <EFBFBD> restore <EFBFBD> <EFBFBD> < br / >
< a href = "#3.7" > 3.7< / a > )(ʹ<EFBFBD> <EFBFBD> PostgreSQL)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫʹ<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
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< a href = "#4.1" > 4.1< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> У<EFBFBD> < br / >
< a href = "#4.2" > 4.2< / a > )<EFBFBD> <EFBFBD> <EFBFBD> β鿴<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> Ķ<EFBFBD> <EFBFBD> 壿<EFBFBD> <EFBFBD> <EFBFBD> β鿴< i > psql< / i > <EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> IJ<EFBFBD> ѯָ <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> ǣ<EFBFBD> < br / >
< a href = "#4.3" > 4.3< / a > )<EFBFBD> <EFBFBD> <EFBFBD> θ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> < br / >
< a href = "#4.4" > 4.4< / a > )һ<EFBFBD> м<EFBFBD> ¼<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ<EFBFBD> <EFBFBD> Ƕ<EFBFBD> <EFBFBD> ٣<EFBFBD> < br / >
< a href = "#4.5" > 4.5< / a > )<EFBFBD> 洢һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͵<EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> ٴ<EFBFBD> <EFBFBD> ̿ < br / >
< a href = "#4.6" > 4.6< / a > )Ϊʲô<EFBFBD> ҵIJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊʲô<EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> ѯû<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#4.7" > 4.7< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> ܿ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҵIJ<EFBFBD> ѯ<EFBFBD> ģ<EFBFBD> < br / >
< a href = "#4.8" > 4.8< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> Сд<EFBFBD> ص<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> ң<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> Сд<EFBFBD> ز<EFBFBD> <EFBFBD> ң<EFBFBD> < br / >
< a href = "#4.9" > 4.9< / a > )<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> Ƿ<EFBFBD> Ϊ NULL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ij<EFBFBD> ֶ <EFBFBD> <EFBFBD> Ƿ<EFBFBD> <EFBFBD> <EFBFBD> NULLֵ <EFBFBD> <EFBFBD> < br / >
< a href = "#4.10" > 4.10< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֮ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> < br / >
< a href = "#4.11.1" > 4.11.1< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> /<EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> < br / >
< a href = "#4.11.2" > 4.11.2< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> λ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> кŵ<EFBFBD> ֵ <EFBFBD> <EFBFBD> < br / >
< a href = "#4.11.3" > 4.11.3< / a > )ʹ<EFBFBD> <EFBFBD> currval() <EFBFBD> ᵼ<EFBFBD> º<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> race condition<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#4.11.4" > 4.11.4< / a > )Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 쳣<EFBFBD> <EFBFBD> ֹ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> أ<EFBFBD> Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> ֶ <EFBFBD> ȡֵ <EFBFBD> д<EFBFBD> <EFBFBD> ڼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> < br / >
< a href = "#4.12" > 4.12< / a > )ʲô<EFBFBD> <EFBFBD> OID<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> CTID <EFBFBD> <EFBFBD> < br / >
< a href = "#4.13" > 4.13< / a > )Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> < i > ERROR: Memory exhausted in AllocSetAlloc()< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#4.14" > 4.14< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> PostgreSQL <EFBFBD> İ汾<EFBFBD> <EFBFBD> < br / >
< a href = "#4.15" > 4.15< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> ȱʡֵ <EFBFBD> ǵ<EFBFBD> ǰʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> < br / >
< a href = "#4.16" > 4.16< / a > )<EFBFBD> <EFBFBD> <EFBFBD> ν<EFBFBD> <EFBFBD> <EFBFBD> outer join <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#4.17" > 4.17< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> 漰<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> IJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> < br / >
< a href = "#4.18" > 4.18< / a > )<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ض<EFBFBD> <EFBFBD> л<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> < br / >
< a href = "#4.19" > 4.19< / a > )Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> PL/PgSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> relation with OID ##### does not exist<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < br / >
< a href = "#4.20" > 4.20< / a > )Ŀǰ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> ݸ<EFBFBD> <EFBFBD> Ʒ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ã<EFBFBD> < br / >
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< h4 > < a name = "1.1" > < / a > 1.1)PostgreSQL <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
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PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > Post-Gres-Q-L< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ< i > Postgres< / i > <EFBFBD> <EFBFBD>
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PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> Ĺ<EFBFBD> ϵ<EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> ͳ<EFBFBD> <EFBFBD> ҵ<EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> й<EFBFBD> <EFBFBD> ܣ<EFBFBD> ͬ <EFBFBD> ֺ <EFBFBD> <EFBFBD> н<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> DBMS ϵͳ<EFBFBD> <EFBFBD> ʹ<EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> ԡ<EFBFBD>
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѵģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> 붼<EFBFBD> <EFBFBD> <EFBFBD> Ի<EFBFBD> <EFBFBD> á<EFBFBD>
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PostgreSQL <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҪΪ־Ը<EFBFBD> ߣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> DZ鲼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ز<EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> κι<EFBFBD> ˾<EFBFBD> <EFBFBD> <EFBFBD> ơ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 뿪<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 飬<EFBFBD> <EFBFBD> <EFBFBD> μ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣨FAQ<EFBFBD> <EFBFBD>
< a href = "http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html" > http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html< / a >
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< h4 > < a name = "1.2" > < / a > 1.2)PostgreSQL <EFBFBD> İ<EFBFBD> Ȩ<EFBFBD> <EFBFBD> ʲô?< / h4 >
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PostgreSQL<EFBFBD> ķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> BSD<EFBFBD> <EFBFBD> Ȩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> κ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ǻ<EFBFBD> ϲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> û<EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> õ<EFBFBD> BSD<EFBFBD> <EFBFBD> Ȩ<EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> ְ <EFBFBD> Ȩ<EFBFBD> <EFBFBD> c<EFBFBD> <EFBFBD> 1996-2005<EFBFBD> <EFBFBD> PostgreSQL ȫ<EFBFBD> <EFBFBD> С<EFBFBD> 飬<EFBFBD> <EFBFBD> <EFBFBD> ְ <EFBFBD> Ȩ<EFBFBD> <EFBFBD> c<EFBFBD> <EFBFBD> 1994-1996 <EFBFBD> <EFBFBD> <EFBFBD> ݴ<EFBFBD> ѧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> Portions copyright (c) 1996-2005, PostgreSQL Global Development Group Portions Copyright (c) 1994-6 Regents of the University of California<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> κ<EFBFBD> Ŀ<EFBFBD> <EFBFBD> ʹ<EFBFBD> ã<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĺͷַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> κη<EFBFBD> <EFBFBD> ã<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˶<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֤ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǰ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> İ<EFBFBD> Ȩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֳ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> п<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> С<EFBFBD>
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<EFBFBD> <EFBFBD> Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement is
hereby granted, provided that the above copyright notice and this paragraph and
the following two paragraphs appear in all copies.<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> κ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݴ<EFBFBD> ѧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> ô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> µĶ<EFBFBD> <EFBFBD> κε<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˵<EFBFBD> ֱ <EFBFBD> ӵģ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> ӵģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӵĻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Σ<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> ݴ<EFBFBD> ѧ<EFBFBD> Ѿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> ʧ<EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱҲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˡ<EFBFBD>
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<EFBFBD> <EFBFBD> IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST
PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> ݴ<EFBFBD> ѧ<EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> κα<EFBFBD> ֤ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ijһ<EFBFBD> ض<EFBFBD> <EFBFBD> <EFBFBD> ;<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֤ <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ṩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǻ<EFBFBD> <EFBFBD> ڡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǡ<EFBFBD> <EFBFBD> Ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݴ<EFBFBD> ѧû<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ṩά<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֧ <EFBFBD> ֣ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND
THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.<EFBFBD> <EFBFBD> < br / >
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< h4 > < a name = "1.3" > < / a > 1.3)PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳƽ̨ <EFBFBD> ϣ<EFBFBD> < / h4 >
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һ<EFBFBD> <EFBFBD> ˵<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ִ <EFBFBD> <EFBFBD> <EFBFBD> UNIX <EFBFBD> <EFBFBD> <EFBFBD> ݵ<EFBFBD> ƽ̨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> ڰ<EFBFBD> װָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> г<EFBFBD> <EFBFBD> ˷<EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> Ե<EFBFBD> ƽ̨ <EFBFBD> <EFBFBD>
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PostgreSQlҲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Windows-NT<EFBFBD> IJ<EFBFBD> <EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Win2000<EFBFBD> <EFBFBD> WinXP <EFBFBD> <EFBFBD> Win2003<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɵİ<EFBFBD> װ<EFBFBD> <EFBFBD> <EFBFBD> ɴ<EFBFBD>
< a href = "http://pgfoundry.org/projects/pginstaller" > http://pgfoundry.org/projects/pginstaller< / a > <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> MSDOS<EFBFBD> <EFBFBD> Windows<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳ
<EFBFBD> <EFBFBD> Win95<EFBFBD> <EFBFBD> Win98<EFBFBD> <EFBFBD> WinMe<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫͨ <EFBFBD> <EFBFBD> Cygwinģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD>
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ͬ <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> ΪNovell Netware 6<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> İ汾<EFBFBD> ɴ<EFBFBD> < a href = "http://forge.novell.com" > http://forge.novell.com < / a > <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> ΪOS/2<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> İ汾<EFBFBD> ɴ<EFBFBD>
< a href = "http://hobbes.nmsu.edu/cgi-bin/h-search?sh=1&button=Search&key=postgreSQL&stype=all&sort=type&dir=%2F" >
http://hobbes.nmsu.edu/cgi-bin/h-search?sh=1& button=Search& key=postgreSQL& stype=all& sort=type& dir=%2F< / a >
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< h4 > < a name = "1.4" > < / a > 1.4)<EFBFBD> Ҵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> < / h4 >
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ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɴ<EFBFBD> < a href = "http://www.postgresql.org/ftp/" > http://www.postgresql.org/ftp/< / a > <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> Ҳ<EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> FTP<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< a href = "ftp://ftp.PostgreSQL.org/pub/" > ftp://ftp.PostgreSQL.org/pub/< / a > վ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ء<EFBFBD>
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< h4 > < a name = "1.5" > < / a > 1.5)<EFBFBD> Ҵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> ֧ <EFBFBD> ֣ <EFBFBD> < / h4 >
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PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> ṩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> վ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://www.postgresql.org/community/lists/" > http://www.postgresql.org/community/lists/< / a > <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD> <EFBFBD> ȼ<EFBFBD> <EFBFBD> <EFBFBD> < i > General< / i > <EFBFBD> <EFBFBD> < i > Bug< / i > <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ϺõĿ<EFBFBD> ʼ<EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> IRCƵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> FreeNode(< i > irc.freenode.net< / i > )<EFBFBD> <EFBFBD> < i > #postgresql< / i > <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϴ<EFBFBD> Ƶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> UNIX<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> irc<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD>
irc -c '#postgresql' "$USER" irc.freenode.net <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> IRC<EFBFBD> ͻ<EFBFBD> <EFBFBD> ˳<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> л<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD> (< i > #postgersql-es< / i > )<EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD>
(< i > #postgresql-fr< / i > )<EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> <EFBFBD> <EFBFBD> EFNET<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> Ľ<EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
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<EFBFBD> <EFBFBD> ҵ֧ <EFBFBD> ֹ <EFBFBD> ˾<EFBFBD> <EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> < a href = " http://techdocs.postgresql.org/companies.php" > http://techdocs.postgresql.org/companies.php< / a > <EFBFBD> <EFBFBD>
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< h4 > < a name = "1.6" > < / a > 1.6)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ύһ<EFBFBD> <EFBFBD> BUG<EFBFBD> <EFBFBD> <EFBFBD> 棿< / h4 >
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<EFBFBD> ɷ<EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://www.postgresql.org/support/submitbug" > http://www.postgresql.org/support/submitbug< / a > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> дBug<EFBFBD> ϱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɡ<EFBFBD>
< / p >
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ͬ <EFBFBD> <EFBFBD> Ҳ<EFBFBD> ɷ<EFBFBD> <EFBFBD> <EFBFBD> ftpվ<EFBFBD> <EFBFBD> < a href = "ftp://ftp.PostgreSQL.org/pub/" > ftp://ftp.PostgreSQL.org/pub/< / a > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> µ<EFBFBD> PostgreSQL<EFBFBD> 汾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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< h4 > < a name = "1.7" > < / a > 1.7)<EFBFBD> <EFBFBD> <EFBFBD> °<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> µİ汾<EFBFBD> ǰ汾 8.0.2 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ע<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> °汾Ϊ8.0.3<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> Ǽƻ<EFBFBD> ÿ<EFBFBD> 귢<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> 汾<EFBFBD> <EFBFBD> ÿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ·<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> С<EFBFBD> 汾<EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "1.8" > < / a > 1.8)<EFBFBD> ܹ <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> һЩ<EFBFBD> ֲ <EFBFBD> ֲ <EFBFBD> ҳ<EFBFBD> <EFBFBD> һЩ<EFBFBD> IJ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD> <EFBFBD> μ<EFBFBD> /doc Ŀ¼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ע<EFBFBD> <EFBFBD> ӦΪ $PGHOME/doc<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> 㻹<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> ֲ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> ǣ<EFBFBD> < a href = "http://www.PostgreSQL.org/docs" > http://www.PostgreSQL.org/docs< / a > <EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ṩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://www.PostgreSQL.org/docs/awbook.html" > http://www.PostgreSQL.org/docs/awbook.html< / a >
<EFBFBD> <EFBFBD> < a href = "http://www.commandprompt.com/ppbook/" > http://www.commandprompt.com/ppbook/< / a > <EFBFBD> <EFBFBD>
Ҳ<EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> 鼮<EFBFBD> ɹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Korry Douglas<EFBFBD> <EFBFBD> д<EFBFBD> ġ<EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://techdocs.PostgreSQL.org/techdocs/bookreviews.php" > http://techdocs.PostgreSQL.org/techdocs/bookreviews.php< / a > <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> й<EFBFBD> PostgreSQL<EFBFBD> 鼮<EFBFBD> ļ<EFBFBD> <EFBFBD> 顣
<EFBFBD> <EFBFBD> < a href = "http://techdocs.PostgreSQL.org/" > http://techdocs.PostgreSQL.org/< / a > <EFBFBD> <EFBFBD> <EFBFBD> ռ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> й<EFBFBD> PostgreSQL <EFBFBD> Ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ¡<EFBFBD>
< / p >
< p >
<EFBFBD> ͻ<EFBFBD> <EFBFBD> ˵<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> г<EFBFBD> <EFBFBD> <EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> \d <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> \? <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> п<EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> web վ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD>
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< h4 > < a name = "1.9" > < / a > 1.9)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˽<EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> BUG <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱ<EFBFBD> Ĺ<EFBFBD> <EFBFBD> ܣ<EFBFBD> < / h4 >
< p >
PostgreSQL ֧ <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> չ<EFBFBD> ˵<EFBFBD> SQL-92 <EFBFBD> <EFBFBD> <EFBFBD> Ӽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> < a href = "http://www.postgresql.org/docs/faqs.TODO.html" > TODO< / a > <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡһ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱ<EFBFBD> Ĺ<EFBFBD> <EFBFBD> ܺ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļƻ<EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "1.10" > < / a > 1.10)<EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѧϰ SQL <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> ȿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ᵽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> ص<EFBFBD> <EFBFBD> 鼮<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > Teach Yourself SQL in 21 Days, Second Edition< / i > <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> ϲ<EFBFBD> <EFBFBD> < i > The Practical SQL Handbook< / i > Bowman, Judith S., et al., Addison-Wesley<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϲ<EFBFBD> <EFBFBD>
< i > The Complete Reference SQL< / i > , Groff et al., McGraw-Hill<EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "1.11" > < / a > 1.11)<EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 뿪<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 飿< / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://www.postgresql.org/docs/faqs.FAQ_DEV.html" > Developer's FAQ < / a > <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "1.12" > < / a > 1.12)PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Σ<EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> кü<EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܣ<EFBFBD> <EFBFBD> ɿ<EFBFBD> <EFBFBD> ԣ<EFBFBD> ֧ <EFBFBD> ֺ <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< dl >
< dt > < b > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
PostgreSQL ӵ<EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> DBMS <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> 磺<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ο<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ժ<EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> ǻ<EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> <EFBFBD> ̳ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ͷ<EFBFBD> <EFBFBD> 汾<EFBFBD> <EFBFBD> <EFBFBD> п<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õȡ<EFBFBD> < br / >
< / dd >
< dt > < b > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> úͿ<EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܡ<EFBFBD>
<EFBFBD> <EFBFBD> ijЩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȽϿ죬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƚ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> +/- 10%֮ <EFBFBD> 䡣< br / >
< / dd >
< dt > < b > <EFBFBD> ɿ<EFBFBD> <EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> DBMS <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǿɿ<EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ö<EFBFBD> û<EFBFBD> С<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŭ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Եģ<EFBFBD> <EFBFBD> ȶ<EFBFBD> <EFBFBD> ij<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ٵĴ<EFBFBD> <EFBFBD> 롣ÿ<EFBFBD> <EFBFBD> <EFBFBD> 汾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> µ<EFBFBD> beta
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> 䣬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʷ<EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ṩ<EFBFBD> ȶ<EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> ι̵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> õİ汾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> ⷽ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ൱<EFBFBD> ġ<EFBFBD> < br / >
< / dd >
< dt > < b > ֧ <EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> ṩһ<EFBFBD> <EFBFBD> <EFBFBD> dz<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> κ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⡣
<EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> <EFBFBD> ܱ <EFBFBD> ֤ <EFBFBD> ϶<EFBFBD> <EFBFBD> ܽ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֮ <EFBFBD> £<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> DBMS Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܹ <EFBFBD> <EFBFBD> ṩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
ֱ <EFBFBD> <EFBFBD> <EFBFBD> 뿪<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> Ⱥ<EFBFBD> <EFBFBD> <EFBFBD> ֲ <EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӵ<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> ֧ <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> DBMS
<EFBFBD> <EFBFBD> Ҫ<EFBFBD> á<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> ҵ<EFBFBD> Ե<EFBFBD> Ԥ<EFBFBD> <EFBFBD> װ<EFBFBD> <EFBFBD> ֧ <EFBFBD> ֣ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ը<EFBFBD> <EFBFBD> ṩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> ˡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> FAQ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 1.5 С<EFBFBD> ڣ<EFBFBD> < br / >
< / dd >
< dt > < b > <EFBFBD> ۸<EFBFBD> < / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> Ƕ<EFBFBD> <EFBFBD> κ<EFBFBD> <EFBFBD> <EFBFBD> ;<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> úͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> ġ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Բ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> IJ<EFBFBD> Ʒ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵĴ<EFBFBD> <EFBFBD> 룬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> İ<EFBFBD> Ȩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> BSD <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> İ<EFBFBD> Ȩ<EFBFBD> ⡣
< / dd >
< / dl >
< h4 > < a name = "1.13" > < / a > 1.13)˭<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ѱ<EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ίԱ<EFBFBD> ᣬ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> ܷ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ---<EFBFBD> <EFBFBD> Ϊһ<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> ȷ<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD>
ίԱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> CVS<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 飬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> Ϊ<EFBFBD> ˽<EFBFBD> <EFBFBD> й<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƕ<EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> п<EFBFBD> <EFBFBD> ƣ<EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> κ<EFBFBD> <EFBFBD> ˾<EFBFBD>
<EFBFBD> ɲμӵĿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƶģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> ľ<EFBFBD> <EFBFBD> Ǽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ۼ<EFBFBD> <EFBFBD> ɣ<EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://www.postgresql.org/docs/faqs.FAQ_DEV.html" > Developer's FAQ < / a > <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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< div > < h2 > <EFBFBD> û<EFBFBD> <EFBFBD> ͻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h2 > < / div >
< h4 > < a name = "2.1" > < / a > 2.1)<EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> Ժ<EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL(ȱʡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> )ֻ <EFBFBD> <EFBFBD> װ<EFBFBD> <EFBFBD> C<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǶʽC<EFBFBD> Ľӿڣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ľӿڶ<EFBFBD> <EFBFBD> Ƕ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> ܹ <EFBFBD> <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> ӿ<EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĺô<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> и<EFBFBD> <EFBFBD> Եķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 顣
< / p >
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һЩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PHP<EFBFBD> <EFBFBD> <EFBFBD> з<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> Ľӿڣ<EFBFBD> Perl,TCL,Python<EFBFBD> Լ<EFBFBD> <EFBFBD> ܶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԵĽӿ<EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://gborg.postgresql.org/" > http://gborg.postgresql.org < / a > <EFBFBD> ϵ<EFBFBD> < i > Drivers/Interfaces< / i > С<EFBFBD> ڿ<EFBFBD> <EFBFBD> ҵ<EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> Internet<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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< h4 > < a name = "2.2" > < / a > 2.2)<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> ߿<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Web ҳ<EFBFBD> 棿< / h4 >
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һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> Ϊ<EFBFBD> <EFBFBD> ̨ <EFBFBD> <EFBFBD> ͦ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> վ<EFBFBD> <EFBFBD> <EFBFBD> ǣ<EFBFBD> < a href = "http://www.webreview.com" > http://www.webreview.com< / a > <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Web <EFBFBD> <EFBFBD> <EFBFBD> ɣ<EFBFBD> PHP <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õĽӿڡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڣ<EFBFBD> < a href = "http://www.php.net/" > http://www.php.net/< / a > <EFBFBD> <EFBFBD>
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<EFBFBD> <EFBFBD> <EFBFBD> ڸ<EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܶ <EFBFBD> <EFBFBD> ˲<EFBFBD> <EFBFBD> <EFBFBD> Perl <EFBFBD> ӿں<EFBFBD> CGI.pm <EFBFBD> <EFBFBD> mod_perl <EFBFBD> <EFBFBD>
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< h4 > < a name = "2.3" > < / a > 2.3)PostgreSQL ӵ<EFBFBD> <EFBFBD> ͼ<EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
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<EFBFBD> ǵģ<EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://techdocs.postgresql.org/guides/GUITools" > http://techdocs.postgresql.org/guides/GUITools< / a > <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϸ<EFBFBD> <EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD>
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< div > < h2 > ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h2 > < / div >
< h4 > < a name = "3.1" > < / a > 3.1)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܰ <EFBFBD> PostgreSQL װ<EFBFBD> <EFBFBD> /usr/local/pgsql <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĵط<EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> configure ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> --prefix ѡ<EFBFBD>
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< h4 > < a name = "3.2" > < / a > 3.2)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ο<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> < / h4 >
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ȱʡʱ<EFBFBD> <EFBFBD> PostgreSQL ֻ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> unix <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> TCP/IP<EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD>
<EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> < i > postgresql.conf< / i > <EFBFBD> е<EFBFBD> < i > listen_addresses< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> < i > pg_hba.conf< / i > <EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> host-based <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֤ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӵġ<EFBFBD>
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< h4 > < a name = "3.3" > < / a > 3.3)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ի<EFBFBD> <EFBFBD> ø<EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܣ<EFBFBD> < / h4 >
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<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> DZ<EFBFBD> ܡ<EFBFBD>
< / p >
< dl >
< dt > < b > <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> ʽ<EFBFBD> ı仯< / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> 漰<EFBFBD> IJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> ʽ<EFBFBD> Ի<EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> :
< ul >
< li > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> Ͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / li >
< li > ʹ<EFBFBD> <EFBFBD> COPY<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Insert<EFBFBD> <EFBFBD> <EFBFBD> 䣻< / li >
< li > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ύ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / li >
< li > <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ¼ʱʹ<EFBFBD> <EFBFBD> CLUSTER<EFBFBD> <EFBFBD> < / li >
< li > <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ּ <EFBFBD> ¼ʱʹ<EFBFBD> <EFBFBD> LIMIT<EFBFBD> <EFBFBD> < / li >
< li > ʹ<EFBFBD> <EFBFBD> Ԥ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> Prepared Query)<EFBFBD> <EFBFBD> < / li >
< li > ʹ<EFBFBD> <EFBFBD> ANALYZE<EFBFBD> Ա<EFBFBD> <EFBFBD> ־<EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> Ż<EFBFBD> ͳ<EFBFBD> ƣ<EFBFBD> < / li >
< li > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> VACUUM <EFBFBD> <EFBFBD> < i > pg_autovacuum< / i > < / li >
< li > <EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݸ<EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> ɾ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ȼ<EFBFBD> <EFBFBD> <EFBFBD> ؽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / li >
< / ul >
< / dd >
< dt > < b > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> < i > postgres.conf< / i > <EFBFBD> еĺܶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ö<EFBFBD> <EFBFBD> <EFBFBD> Ӱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> в<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> ɼ<EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://www.postgresql.org/docs/current/static/runtime.html" > Administration Guide/Server Run-time Environment/Run-time Configuration< / a > <EFBFBD> <EFBFBD>
<EFBFBD> йز<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ľ<EFBFBD> <EFBFBD> Ϳɼ<EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://www.varlena.com/varlena/GeneralBits/Tidbits/annotated_conf_e.html" >
http://www.varlena.com/varlena/GeneralBits/Tidbits/annotated_conf_e.html < / a > <EFBFBD> <EFBFBD>
< a href = "http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html" > http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html< / a > <EFBFBD> <EFBFBD>
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< dt > < b > Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѡ<EFBFBD> <EFBFBD> < / b > < / dt >
< dd >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܵ <EFBFBD> Ӱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < a href = "http://candle.pha.pa.us/main/writings/pgsql/hw_performance/index.html" >
http://candle.pha.pa.us/main/writings/pgsql/hw_performance/index.html< / a > <EFBFBD> <EFBFBD>
< a href = "http://www.powerpostgresql.com/PerfList/" > http://www.powerpostgresql.com/PerfList/< / a > <EFBFBD> <EFBFBD>
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< / dl >
< h4 > < a name = "3.4" > < / a > 3.4)PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ի<EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> ĵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD> < / h4 >
< p >
PostgreSQL <EFBFBD> кܶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > log_* < / i > <EFBFBD> ķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ñ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> ѯ<EFBFBD> Ĵ<EFBFBD> ӡ<EFBFBD> ͽ<EFBFBD> <EFBFBD> <EFBFBD> ͳ<EFBFBD> ƣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ե<EFBFBD> <EFBFBD> Ժ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܲ <EFBFBD> <EFBFBD> Ժ<EFBFBD> <EFBFBD> а<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
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< h4 > < a name = "3.5" > < / a > 3.5)Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> Sorry, too many clients<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> Ѵﵽȱʡ100<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ̨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > postgresql.conf< / i > <EFBFBD> ļ<EFBFBD> <EFBFBD> е<EFBFBD> < i > max_connections< / i > ֵ <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> postmaster<EFBFBD> ĺ<EFBFBD> ̨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > postmaster< / i > <EFBFBD> <EFBFBD>
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< h4 > < a name = "3.6" > < / a > 3.6)ΪʲôҪ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 汾ʱ<EFBFBD> <EFBFBD> dump <EFBFBD> <EFBFBD> restore <EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ÿ<EFBFBD> <EFBFBD> С<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˽<EFBFBD> <EFBFBD> ٵ<EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˴<EFBFBD> 7.4.0 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 7.4.1 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ dump <EFBFBD> <EFBFBD> restore<EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 7.3 <EFBFBD> <EFBFBD> 7.4<EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> Щ<EFBFBD> 仯һ<EFBFBD> <EFBFBD> <EFBFBD> Ƚϸ<EFBFBD> <EFBFBD> ӣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> ά<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݡ<EFBFBD>
dump <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݰ<EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> õĸ<EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ¼<EFBFBD> <EFBFBD> ز<EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> µ<EFBFBD> <EFBFBD> ڲ<EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "3.7" > < / a > 3.7)(ʹ<EFBFBD> <EFBFBD> PostgreSQL)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫʹ<EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> ڼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ǽ<EFBFBD> <EFBFBD> ݵģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> м<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͬ <EFBFBD> ġ<EFBFBD> <EFBFBD> <EFBFBD> ʵ<EFBFBD> ϲ<EFBFBD> <EFBFBD> ǣ<EFBFBD>
ECC RAM<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> żУ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ棩<EFBFBD> <EFBFBD> SCSI <EFBFBD> <EFBFBD> Ӳ<EFBFBD> ̣ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> <EFBFBD> ˻<EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> ӿɿ<EFBFBD> <EFBFBD> Ҿ<EFBFBD> <EFBFBD> и<EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܡ<EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> κ<EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> ϣ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɿ<EFBFBD> <EFBFBD> Ժ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫȫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> о<EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǵ<EFBFBD> <EFBFBD> ʼ<EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> й<EFBFBD> <EFBFBD> <EFBFBD>
Ӳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> Լ۱ȵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ۡ <EFBFBD>
< / p >
< hr / >
< div > < h2 > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h2 > < / div >
< h4 > < a name = "4.1" > < / a > 4.1)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> У<EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ִ <EFBFBD> в<EFBFBD> ѯ<EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> ȷ<EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> LIMIT<EFBFBD> <EFBFBD> <EFBFBD> ܡ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > ORDER BY< / i > <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƥ<EFBFBD> 䣬PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> ܾ <EFBFBD> ֻ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ¼<EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ִ <EFBFBD> в<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> ȷ<EFBFBD> еļ<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> α<EFBFBD> (cursor)<EFBFBD> <EFBFBD> FETCH<EFBFBD> <EFBFBD> <EFBFBD> ܡ<EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ·<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡһ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ¼<EFBFBD> ģ<EFBFBD>
< / p >
< pre >
SELECT cols
FROM tab
ORDER BY random()
LIMIT 1 ;
< / pre >
< h4 > < a name = "4.2" > < / a > 4.2)<EFBFBD> <EFBFBD> <EFBFBD> β鿴<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> Ķ<EFBFBD> <EFBFBD> 壿<EFBFBD> <EFBFBD> <EFBFBD> β鿴< i > psql< / i > <EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> IJ<EFBFBD> ѯָ <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> ǣ<EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> \dt <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʾ<EFBFBD> <EFBFBD> <EFBFBD> ݱ<EFBFBD> <EFBFBD> Ķ<EFBFBD> <EFBFBD> 壬Ҫ<EFBFBD> ˽<EFBFBD> < i > psql< / i > <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> \? <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣬<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ķ<EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> ļ<EFBFBD> < i > pgsql/src/bin/psql/describe.c< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD> б<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 㻹<EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> < i > -E< / i > ѡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD> <EFBFBD> ִ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > psql< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> ʵ<EFBFBD> <EFBFBD> ʹ<EFBFBD> õ<EFBFBD> SQL<EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> PostgreSQLҲ<EFBFBD> ṩ<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SQL<EFBFBD> <EFBFBD> INFORMATION SCHEMA<EFBFBD> ӿڣ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> < i > pg_< / i > <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˱<EFBFBD> <EFBFBD> Ķ<EFBFBD> <EFBFBD> 塣
< / p >
< p >
ʹ<EFBFBD> <EFBFBD> < i > psql -l< / i > ָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> г<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ⡣
< / p >
< p >
Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> < i > pgsql/src/tutorial/syscat.source< / i > <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> о<EFBFBD> <EFBFBD> ˺ܶ <EFBFBD> <EFBFBD> ɴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> л<EFBFBD> ȡ<EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> SELECT<EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.3" > < / a > 4.3)<EFBFBD> <EFBFBD> <EFBFBD> θ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> 8.0<EFBFBD> 汾<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ף<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> ALTER TABLE ALTER COLUMN TYPE <EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǰ<EFBFBD> İ汾<EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< pre >
BEGIN;
ALTER TABLE tab ADD COLUMN new_col new_data_type;
UPDATE tab SET new_col = CAST(old_col AS new_data_type);
ALTER TABLE tab DROP COLUMN old_col;
COMMIT;
< / pre >
< p >
<EFBFBD> <EFBFBD> Ȼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> < i > VACUUM FULL tab < / i > ָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹϵͳ<EFBFBD> ջ<EFBFBD> <EFBFBD> <EFBFBD> Ч<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ռ<EFBFBD> õĿռ䡣
< / p >
< h4 > < a name = "4.4" > < / a > 4.4)һ<EFBFBD> м<EFBFBD> ¼<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ<EFBFBD> <EFBFBD> Ƕ<EFBFBD> <EFBFBD> ٣<EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD>
< / p >
< blockquote >
< table >
< tbody >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ磿< / td > < td > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> <EFBFBD> Ѵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 32TB <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ⣩< / td > < / tr >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ磿< / td > < td > 32 TB< / td > < / tr >
< tr > < td > һ<EFBFBD> м<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ磿< / td > < td > 1.6 TB< / td > < / tr >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ<EFBFBD> ?< / td > < td > 1 GB< / td > < / tr >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < td > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < / tr >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < td > 250-1600 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> йأ<EFBFBD> < / td > < / tr >
< tr > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < td > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < / tr >
< / tbody >
< / table >
< / blockquote >
< p >
<EFBFBD> <EFBFBD> Ȼ<EFBFBD> <EFBFBD> ʵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> ܿ <EFBFBD> <EFBFBD> ô<EFBFBD> <EFBFBD> ̿ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ<EFBFBD> /<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> ʵ<EFBFBD> ϣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 쳣<EFBFBD> ش<EFBFBD> ʱ<EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> ܺ ܴ <EFBFBD> Ӱ<EFBFBD> 졣
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߴ<EFBFBD> 32 TB <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳ<EFBFBD> Դ<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> ֧ <EFBFBD> ֡ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ö<EFBFBD> <EFBFBD> <EFBFBD> 1 GB <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> 洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> ϵͳ<EFBFBD> ߴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> ġ<EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱʡ<EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> С<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 32K <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ߴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.5" > < / a > 4.5)<EFBFBD> 洢һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͵<EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> <EFBFBD> ٴ<EFBFBD> <EFBFBD> ̿ < / h4 >
< p >
һ<EFBFBD> <EFBFBD> Postgres <EFBFBD> <EFBFBD> <EFBFBD> ݿ⣨<EFBFBD> 洢һ<EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ռ<EFBFBD> õĿռ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> ൱<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> С5<EFBFBD> <EFBFBD> <EFBFBD> Ĵ<EFBFBD> <EFBFBD> ̿
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> 磬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> 100,000 <EFBFBD> е<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> ÿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ20<EFBFBD> ֽ <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> ļ<EFBFBD> ռ<EFBFBD> <EFBFBD> 2.8 MB<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> ݵ<EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> ļ<EFBFBD> <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> 6.4 MB:
< / p >
< pre >
32 <EFBFBD> ֽ <EFBFBD> : ÿ<EFBFBD> е<EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD>
24 <EFBFBD> ֽ <EFBFBD> : һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD>
+ 4 <EFBFBD> ֽ <EFBFBD> : ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ָ <EFBFBD> <EFBFBD> Ԫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ָ <EFBFBD> <EFBFBD>
----------------------------------------
60 <EFBFBD> ֽ <EFBFBD> ÿ<EFBFBD> <EFBFBD>
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҳ<EFBFBD> Ĵ<EFBFBD> С<EFBFBD> <EFBFBD> 8192 <EFBFBD> ֽ <EFBFBD> (8 KB)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
8192 <EFBFBD> ֽ <EFBFBD> ÿҳ
------------------- = 136 <EFBFBD> <EFBFBD> /<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
60 <EFBFBD> ֽ <EFBFBD> ÿ<EFBFBD> <EFBFBD>
100000 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
-------------------- = 735 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
128 <EFBFBD> <EFBFBD> ÿҳ
735 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҳ * 8192 <EFBFBD> ֽ <EFBFBD> /ҳ = 6,021,120 <EFBFBD> ֽ <EFBFBD> 6 MB<EFBFBD> <EFBFBD>
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> ô<EFBFBD> <EFBFBD> <EFBFBD> Ķ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> Ҳȷʵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> ܺ ܴ <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> ֵ < i > NULL< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> λͼ<EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ռ<EFBFBD> ú<EFBFBD> <EFBFBD> ٵĿռ䡣
< / p >
< h4 > < a name = "4.6" > < / a > 4.6)Ϊʲô<EFBFBD> ҵIJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊʲô<EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> ѯû<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ÿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> <EFBFBD> ڱ<EFBFBD> <EFBFBD> Ĵ<EFBFBD> С<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Сֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> ѯֻ <EFBFBD> <EFBFBD> ѡ<EFBFBD> б<EFBFBD> <EFBFBD> н<EFBFBD> С<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ļ<EFBFBD> ¼ʱ<EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɨ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 漴<EFBFBD> <EFBFBD> <EFBFBD> ̴ <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> ܱ <EFBFBD> ֱ <EFBFBD> ӵض<EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˳<EFBFBD> <EFBFBD> ɨ<EFBFBD> 裩<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< p >
Ϊ<EFBFBD> <EFBFBD> <EFBFBD> ж<EFBFBD> <EFBFBD> Ƿ<EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> йر<EFBFBD> <EFBFBD> <EFBFBD> ͳ<EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щͳ<EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> VACUUM ANALYZE<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ANALYZE <EFBFBD> <EFBFBD> <EFBFBD> á<EFBFBD>
ʹ<EFBFBD> <EFBFBD> ͳ<EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ж<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ܹ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> ж<EFBFBD> <EFBFBD> Ƿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
ͳ<EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˳<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӷ<EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> á<EFBFBD> <EFBFBD> ڱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 仯ʱ<EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> ڽ<EFBFBD> <EFBFBD> <EFBFBD> ͳ<EFBFBD> <EFBFBD> ֵ <EFBFBD> ĸ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ռ<EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ORDER BY <EFBFBD> <EFBFBD> ִ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> ˳<EFBFBD> <EFBFBD> ɨ<EFBFBD> 裬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɨ<EFBFBD> <EFBFBD> Ҫ<EFBFBD> 졣
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> ǣ<EFBFBD> <EFBFBD> <EFBFBD> LIMIT <EFBFBD> <EFBFBD> ORDER BY <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> ֻ <EFBFBD> ᷵ <EFBFBD> ر<EFBFBD> <EFBFBD> <EFBFBD> һС<EFBFBD> <EFBFBD> <EFBFBD> ֡ <EFBFBD>
ʵ<EFBFBD> <EFBFBD> <EFBFBD> ϣ<EFBFBD> <EFBFBD> <EFBFBD> Ȼ MAX() <EFBFBD> <EFBFBD> MIN() <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
ORDER BY <EFBFBD> <EFBFBD> LLIMIT ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Сֵ <EFBFBD> ǿ<EFBFBD> <EFBFBD> Եģ<EFBFBD>
< / p >
< pre >
SELECT col
FROM tab
ORDER BY col [ DESC ]
LIMIT 1;
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> PostgreSQL<EFBFBD> <EFBFBD> <EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> ˳<EFBFBD> <EFBFBD> ɨ<EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> <EFBFBD> <EFBFBD> ȷ<EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> < code > SET enable_seqscan TO 'off'< / code > ָ <EFBFBD>
Ȼ<EFBFBD> <EFBFBD> <EFBFBD> ٴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> в<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϳ<EFBFBD> <EFBFBD> Կ<EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɨ<EFBFBD> <EFBFBD> <EFBFBD> Ƿ<EFBFBD> ȷʵҪ<EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > LIKE< / i > <EFBFBD> <EFBFBD> < i > ~< / i > ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ض<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> ã<EFBFBD>
< / p >
< ul >
< li > <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> ʼ<EFBFBD> <EFBFBD> <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˵<EFBFBD> <EFBFBD>
< ul >
< li > < i > LIKE< / i > ģʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > %< / i > <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> < / li >
< li > < i > ~< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> ģʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > ^< / i > <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> < / li >
< / ul >
< / li >
< li > <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƥ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> ģʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> [a-e]<EFBFBD> <EFBFBD> < / li >
< li > <EFBFBD> <EFBFBD> Сд<EFBFBD> صIJ<EFBFBD> <EFBFBD> ң<EFBFBD> <EFBFBD> <EFBFBD> ILIKE <EFBFBD> <EFBFBD> ~* <EFBFBD> Ȳ<EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < a href = "#4.8" > 4.8< / a > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ĺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / li >
< li > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> initdb ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱʡ<EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> C locale<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> <EFBFBD> ڷ<EFBFBD> C locale<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < code > text_pattern_ops< / code > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < small > LIKE< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / li >
< / ul >
< p >
<EFBFBD> <EFBFBD> 8.0֮ <EFBFBD> İ汾<EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƥ<EFBFBD> 䣬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ر<EFBFBD> <EFBFBD> Ƕ<EFBFBD> int2,int8<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> ͵<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.7" > < / a > 4.7)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> ܿ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> Ż<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҵIJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> ο<EFBFBD> < small > EXPLAIN< / small > <EFBFBD> ֲ <EFBFBD> ҳ<EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.8" > < / a > 4.8)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> Сд<EFBFBD> ص<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> ң<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> д<EFBFBD> Сд<EFBFBD> ز<EFBFBD> <EFBFBD> ң<EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < i > ~ < / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽƥ<EFBFBD> 䣬<EFBFBD> <EFBFBD> < i > ~*< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Сд<EFBFBD> ص<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽƥ<EFBFBD> 䡣<EFBFBD> <EFBFBD> дЩ<EFBFBD> ص<EFBFBD> LIKE <EFBFBD> <EFBFBD> <EFBFBD> ֳ <EFBFBD> Ϊ ILIKE<EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> Сд<EFBFBD> صĵ<EFBFBD> ʽ<EFBFBD> Ƚ<EFBFBD> ͨ <EFBFBD> <EFBFBD> д<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< pre > SELECT *
FROM tab
WHERE lower(col) = 'abc';
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> ñ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> <EFBFBD> Դ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ɱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õĺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> :
< / p >
< pre > CREATE INDEX tabindex ON tab (lower(col));
< / pre >
< h4 > < a name = "4.9" > < / a > 4.9)<EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> Ƿ<EFBFBD> Ϊ < i > NULL< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> <EFBFBD> ȷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ij<EFBFBD> ֶ <EFBFBD> <EFBFBD> Ƿ<EFBFBD> <EFBFBD> <EFBFBD> < i > NULL< / i > ֵ <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> < small > IS NULL< / small > <EFBFBD> <EFBFBD> < small > IS NOT NULL< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 巽<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> £<EFBFBD>
< / p >
< pre > SELECT *
FROM tab
WHERE col IS NULL;
< / pre >
< p > Ϊ<EFBFBD> <EFBFBD> <EFBFBD> ܶ <EFBFBD> < small > NULL< / small > <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < small > ORDER BY< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> < small > IS NULL< / small > <EFBFBD> <EFBFBD>
< small > IS NOT NULL< / small > <EFBFBD> <EFBFBD> <EFBFBD> η<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> < i > true< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> < i > false< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǰ<EFBFBD> 棬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӾͻὫ<EFBFBD> <EFBFBD>
NULL <EFBFBD> ļ<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> ڽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 沿<EFBFBD> ֣ <EFBFBD>
< / p >
< pre > SELECT *
FROM tab
ORDER BY (col IS NOT NULL)
< / pre >
< h4 > < a name = "4.10" > < / a > 4.10)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֮ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> < / h4 >
< blockquote >
< table >
< tbody >
< tr > < th > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / th > < th > <EFBFBD> ڲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / th > < th > ˵<EFBFBD> <EFBFBD> < / th > < / tr >
< tr > < td > VARCHAR(n)< / td > < td > varchar< / td > < td > ָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 䳤<EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 㶨<EFBFBD> 峤<EFBFBD> ȵIJ<EFBFBD> <EFBFBD> ֲ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < / tr >
< tr > < td > CHAR(n)< / td > < td > bpchar< / td > < td > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݲ<EFBFBD> <EFBFBD> 㶨<EFBFBD> 峤<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> Կո<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / td > < / tr >
< tr > < td > TEXT< / td > < td > text< / td > < td > û<EFBFBD> <EFBFBD> <EFBFBD> ر<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƣ<EFBFBD> < / td > < / tr >
< tr > < td > BYTEA< / td > < td > bytea< / td > < td > <EFBFBD> 䳤<EFBFBD> ֽ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> ʹ<EFBFBD> <EFBFBD> NULLҲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ģ<EFBFBD> < / td > < / tr >
< tr > < td > "char"< / td > < td > char< / td > < td > һ<EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> < / td > < / tr >
< / tbody >
< / table >
< / blockquote >
< p >
<EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> <EFBFBD> 㽫<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ơ<EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> ǰ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> "varlena"<EFBFBD> <EFBFBD> <EFBFBD> 䳤<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˵<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͷ<EFBFBD> <EFBFBD> <EFBFBD> ĸ<EFBFBD> <EFBFBD> ֽ <EFBFBD> <EFBFBD> dz<EFBFBD> <EFBFBD> ȣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʵ<EFBFBD> <EFBFBD> ռ<EFBFBD> õĿռ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ĵ<EFBFBD> СҪ<EFBFBD> <EFBFBD> һЩ<EFBFBD> <EFBFBD>
Ȼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> Ͷ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ա<EFBFBD> ѹ<EFBFBD> <EFBFBD> <EFBFBD> 洢<EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> TOAST <EFBFBD> ѻ<EFBFBD> <EFBFBD> 洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˴<EFBFBD> <EFBFBD> ̿ <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> ܱ <EFBFBD> Ԥ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> ١<EFBFBD>
< / p >
< p >
< small > VARCHAR(n)< / small > <EFBFBD> ڴ洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õġ<EFBFBD>
< small > TEXT< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ɴ<EFBFBD> 1G<EFBFBD> <EFBFBD> <EFBFBD> ҵ<EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƴ<EFBFBD> <EFBFBD> ȵ<EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< p >
< small > CHAR(n)< / small > <EFBFBD> <EFBFBD> <EFBFBD> ʺ<EFBFBD> <EFBFBD> ڴ洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < small > CHAR(n)< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Կո<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 㣨<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> < small > VARCHAR(n)< / small > ֻ <EFBFBD> 洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݡ<EFBFBD>
< small > BYTEA< / small > <EFBFBD> <EFBFBD> <EFBFBD> ڴ洢<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǰ<EFBFBD> <EFBFBD> <EFBFBD> NULL <EFBFBD> ֽ <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> <EFBFBD> ;<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ƶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԡ<EFBFBD>
< / p >
< h4 > < a name = "4.11.1" > < / a > 4.11.1)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> /<EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> < / h4 >
< p >
PostgreSQL ֧ <EFBFBD> <EFBFBD> SERIAL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͡ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 磺
< / p >
< pre >
CREATE TABLE person (
id SERIAL,
name TEXT
);
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> ת<EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD>
< / p >
< pre >
CREATE SEQUENCE person_id_seq;
CREATE TABLE person (
id INT4 NOT NULL DEFAULT nextval('person_id_seq'),
name TEXT
);
< / pre >
< p >
<EFBFBD> ο<EFBFBD> create_sequence <EFBFBD> ֲ <EFBFBD> ҳ<EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> еĸ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.11.2" > < / a > 4.11.2)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> λ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> кŵ<EFBFBD> ֵ <EFBFBD> <EFBFBD> < / h4 >
< p >
һ<EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> <EFBFBD> <EFBFBD> ֮ <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> <EFBFBD> nextval() <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ж<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> SERIAL ֵ <EFBFBD> <EFBFBD> Ȼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʽ<EFBFBD> <EFBFBD> <EFBFBD> 롣ʹ<EFBFBD> <EFBFBD>
< a href = "#4.11.1" > 4.11.1< / a > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> α<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< pre >
new_id = execute("SELECT nextval('person_id_seq')");
execute("INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal')");
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> ʹ<EFBFBD> ô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> new_id <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 磬<EFBFBD> <EFBFBD> Ϊ person <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
ע<EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SEQUENCE <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƽ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < < i > table< / i > > _< < i > serialcolumn< / i > > _< i > seq< / i > <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> table <EFBFBD> <EFBFBD> serialcolumn <EFBFBD> ֱ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ƺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SERIAL <EFBFBD> ֶ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ơ<EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> Ƶģ<EFBFBD> <EFBFBD> <EFBFBD> SERIAL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȱʡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> <EFBFBD> currval() <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ո<EFBFBD> ֵ <EFBFBD> <EFBFBD> SERIAL ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 磺
< / p >
< pre >
execute("INSERT INTO person (name) VALUES ('Blaise Pascal')");
new_id = execute("SELECT currval('person_id_seq')");
< / pre >
< h4 > < a name = "4.11.3" > < / a > 4.11.3)ʹ<EFBFBD> <EFBFBD> < i > currval()< / i > <EFBFBD> ᵼ<EFBFBD> º<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> ij<EFBFBD> ͻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> race condition<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> ᡣ< i > currval()< / i > <EFBFBD> <EFBFBD> <EFBFBD> ص<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 㱾<EFBFBD> λỰ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> ĵ<EFBFBD> ǰֵ <EFBFBD> <EFBFBD> < br / >
< / p >
< h4 > < a name = "4.11.4" > < / a > 4.11.4)Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 쳣<EFBFBD> <EFBFBD> ֹ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> أ<EFBFBD> Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> ֶ <EFBFBD> ȡֵ <EFBFBD> д<EFBFBD> <EFBFBD> ڼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> أ<EFBFBD> < / h4 >
< p >
Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ߲ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ԣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҫ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֮ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> ͻᵼ<EFBFBD> <EFBFBD> <EFBFBD> 쳣<EFBFBD> <EFBFBD> ֹ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> кŻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ּ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < br / > < a name = "4.12" > < / a > 4.12)ʲô<EFBFBD> <EFBFBD> < small > OID< / small > <EFBFBD> <EFBFBD> ʲô<EFBFBD> <EFBFBD> < small > CTID< / small > <EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL <EFBFBD> ﴴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ÿһ<EFBFBD> м<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> Ψһ<EFBFBD> <EFBFBD> < small > OID< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱʹ<EFBFBD> <EFBFBD> < small > WITHOUT OIDS< / small > ѡ<EFBFBD>
< small > OID< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> Զ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> 4<EFBFBD> ֽ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> OID <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> о<EFBFBD> <EFBFBD> <EFBFBD> Ψһ<EFBFBD> ġ<EFBFBD> Ȼ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڳ<EFBFBD> <EFBFBD> <EFBFBD> 40<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< small > OID< / small > <EFBFBD> ˺<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ظ<EFBFBD> <EFBFBD> <EFBFBD> PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڲ<EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> OID <EFBFBD> ڱ<EFBFBD> ֮ <EFBFBD> 佨<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵ<EFBFBD> <EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݱ<EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> < small > SERIAl< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < small > OID< / small >
<EFBFBD> <EFBFBD> Ϊ< small > SERIAL< / small > ֻ <EFBFBD> DZ<EFBFBD> ֤ <EFBFBD> ڵ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ψһ<EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ŀ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ծͷdz<EFBFBD> С<EFBFBD> ˣ<EFBFBD>
< small > SERIAL8< / small > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> 8<EFBFBD> ֽ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к<EFBFBD> <EFBFBD> ֶ <EFBFBD>
< / p >
< p >
< small > CTID< / small > <EFBFBD> <EFBFBD> <EFBFBD> ڱ<EFBFBD> ʶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ飨<EFBFBD> <EFBFBD> ַ <EFBFBD> <EFBFBD> <EFBFBD> ͣ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڣ<EFBFBD> ƫ<EFBFBD> Ƶ<EFBFBD> <EFBFBD> ض<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> С<EFBFBD>
< small > CTID< / small > <EFBFBD> ڼ<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ļ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> غ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ı䡣<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ָ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> С<EFBFBD>
< / p >
< h4 > < a name = "4.13" > < / a > 4.13)Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> < i > ERROR: Memory exhausted in AllocSetAlloc()< / i > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> ܿ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ڴ<EFBFBD> <EFBFBD> ù<EFBFBD> <EFBFBD> ˣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ں˶<EFBFBD> ijЩ<EFBFBD> <EFBFBD> Դ<EFBFBD> нϵ͵<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> postmaster ֮ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< pre >
ulimit -d 262144
limit datasize 256m
< / pre >
< p >
ȡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õ<EFBFBD> shell<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֻ <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> ܳ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ľ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ñȽϸߣ<EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ò<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> ɡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ӧ<EFBFBD> <EFBFBD> <EFBFBD> ڵ<EFBFBD> ǰ<EFBFBD> <EFBFBD> <EFBFBD> ̣ <EFBFBD> <EFBFBD> Լ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> к <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӽ<EFBFBD> <EFBFBD> ̡ <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> SQL<EFBFBD> ͻ<EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> ̨ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ̫ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݶ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ⣬<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> пͻ<EFBFBD> <EFBFBD> <EFBFBD> ֮ ִ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.14" > < / a > 4.14)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> β<EFBFBD> <EFBFBD> <EFBFBD> ֪ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> е<EFBFBD> PostgreSQL <EFBFBD> İ汾<EFBFBD> <EFBFBD> < / h4 >
< p >
<EFBFBD> <EFBFBD> psql <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < code > SELECT version();< / code > ָ <EFBFBD>
< / p >
< h4 > < a name = "4.15" > < / a > 4.15)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> ȱʡֵ <EFBFBD> ǵ<EFBFBD> ǰʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֶ <EFBFBD> < / h4 >
< p >
ʹ<EFBFBD> <EFBFBD> CURRENT_TIMESTAMP<EFBFBD> <EFBFBD>
< / p >
< pre >
CREATE TABLE test (x int, modtime TIMESTAMP DEFAULT CURRENT_TIMESTAMP );
< / pre >
< h4 > < a name = "4.16" > < / a > 4.16)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> outer join <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
PostgreSQL <EFBFBD> <EFBFBD> <EFBFBD> ñ<EFBFBD> <EFBFBD> <EFBFBD> SQL <EFBFBD> ֧ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD>
< / p >
< pre >
SELECT *
FROM t1 LEFT OUTER JOIN t2 ON (t1.col = t2.col);
< / pre >
< p > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / p >
< pre >
SELECT *
FROM t1 LEFT OUTER JOIN t2 USING (col);
< / pre >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȼ۵IJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> t1.col <EFBFBD> <EFBFBD> t2.col <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ҷ<EFBFBD> <EFBFBD> <EFBFBD> t1 <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD> Щ<EFBFBD> <EFBFBD> t2 <EFBFBD> <EFBFBD> û<EFBFBD> <EFBFBD> ƥ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> [<EFBFBD> <EFBFBD> ]<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> (RIGHT OUTER JOIN)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> t2 <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> С<EFBFBD>
<EFBFBD> <EFBFBD> ȫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> FULL OUTER JOIN<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> t1 <EFBFBD> <EFBFBD> t2 <EFBFBD> <EFBFBD> δ<EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> С<EFBFBD>
<EFBFBD> ؼ<EFBFBD> <EFBFBD> <EFBFBD> OUTER <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> [<EFBFBD> <EFBFBD> ]<EFBFBD> <EFBFBD> <EFBFBD> ӡ<EFBFBD> <EFBFBD> <EFBFBD> [<EFBFBD> <EFBFBD> ]<EFBFBD> <EFBFBD> <EFBFBD> Ӻ<EFBFBD> <EFBFBD> <EFBFBD> ȫ[<EFBFBD> <EFBFBD> ]<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ǿ<EFBFBD> ѡ<EFBFBD> ģ<EFBFBD> <EFBFBD> <EFBFBD> ͨ <EFBFBD> <EFBFBD> <EFBFBD> ӱ<EFBFBD> <EFBFBD> <EFBFBD> Ϊ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ӣ<EFBFBD> INNER JOIN<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.17" > < / a > 4.17)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> <EFBFBD> 漰<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> IJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> < / h4 >
< p >
û<EFBFBD> а취<EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> ǰ<EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ֮ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ⡣
<EFBFBD> <EFBFBD> Ϊ PostgreSQL Ҫ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ص<EFBFBD> ϵͳĿ¼<EFBFBD> <EFBFBD> ϵͳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ˿<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> <EFBFBD> IJ<EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ִ <EFBFBD> <EFBFBD> <EFBFBD> Dz<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ġ<EFBFBD>
< / p >
< p >
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ֵ <EFBFBD> <EFBFBD> contrib/dblink<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʵ<EFBFBD> ֿ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ѯ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ȼ<EFBFBD> û<EFBFBD> Ҳ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> <EFBFBD> ӵ<EFBFBD> <EFBFBD> <EFBFBD> ͬ <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݿ<EFBFBD> ִ <EFBFBD> в<EFBFBD> ѯȻ<EFBFBD> <EFBFBD> <EFBFBD> ڿͻ<EFBFBD> <EFBFBD> ˺ϲ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
< / p >
< h4 > < a name = "4.18" > < / a > 4.18)<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ú<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ض<EFBFBD> <EFBFBD> л<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> У<EFBFBD> < / h4 >
< p >
<EFBFBD> ں<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> з<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݼ<EFBFBD> ¼<EFBFBD> <EFBFBD> <EFBFBD> Ĺ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ǻ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> õģ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> μ<EFBFBD> <EFBFBD> <EFBFBD>
< a href = "http://techdocs.postgresql.org/guides/SetReturningFunctions" > http://techdocs.postgresql.org/guides/SetReturningFunctions< / a >
< / p >
< h4 > < a name = "4.19" > < / a > 4.19)Ϊʲô<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʹ<EFBFBD> <EFBFBD> PL/PgSQL<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ȡ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> յ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ϣ<EFBFBD> <EFBFBD> relation with OID ##### does not exist<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> < / h4 >
< p >
PL/PgSQL<EFBFBD> Ỻ<EFBFBD> 溯<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ݣ<EFBFBD> <EFBFBD> ɴ˴<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> õĸ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> PL/PgSQL
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> һ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʱ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> Ȼ<EFBFBD> <EFBFBD> <EFBFBD> ñ<EFBFBD> <EFBFBD> <EFBFBD> ɾ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ؽ<EFBFBD> <EFBFBD> ˣ<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ٴε<EFBFBD> <EFBFBD> øú<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ʧ<EFBFBD> ܣ<EFBFBD>
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< a href = "http://gborg.postgresql.org/project/slony1/projdisplay.php" > Slony-I < / a > <EFBFBD> <EFBFBD>
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