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lines changed Original file line number Diff line number Diff line change 1- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
1+ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
22<!-- saved from url=(0063)file://I:\Wlzhang\MyDoc\postgresql\FAQcn.files\postgres-faq.htm -->
33<!-- saved from url=(0046)http://laser.zhengmai.com.cn/postgres-faq.html --> < HTML > < HEAD > < TITLE > PostgreSQL
44 FAQ-ch</ TITLE >
184184 outer join （外连接）？< br >
185185 < a href ="#4.24 "> 4.24</ a > )
186186 如何使用涉及多个数据库的查询？< br >
187- < CENTER >
188- </ CENTER >
189187 < a href ="#4.25 "> 4.25</ a > )
190188 如何让函数返回多行或多列？< br >
191- < CENTER >
192- </ CENTER >
193189 < a href ="#4.26 "> 4.26</ a > ) 为什么在
194190 PL/PgSQL 函数中不能可靠地创建或删除临时表？< br >
195- < CENTER >
196- </ CENTER >
197191 < a href ="#4.27 "> 4.27</ a > )
198192 有哪些数据复制选项？< br >
199193 < a href ="#4.28 "> 4.28</ a > )
505499 < p >
506500 磁盘文件格式没有变化的升级，可以用 < i > pg_upgrade</ i > 脚本，而不需要做 dump 和 restor。发布说明script 会指明 < i > pg_upgrade</ i >
507501 对该次升级是否可用。</ p >
508- < P >
509502 < HR >
510503 < CENTER >
511504 < H2 > 操作问题</ H2 >
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