{"id":153165,"date":"2024-11-02T05:10:18","date_gmt":"2024-11-01T21:10:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153165\/"},"modified":"2024-11-02T05:10:19","modified_gmt":"2024-11-01T21:10:19","slug":"%e5%be%9e-oracle-%e5%90%91-pg-%e9%a1%9e%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%e6%99%82%e6%87%89%e6%b3%a8%e6%84%8f%e5%93%aa%e4%ba%9b%e5%95%8f%e9%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153165\/","title":{"rendered":"\u5f9e Oracle \u5411 PG \u985e\u6578\u64da\u5eab\u9077\u79fb\u6642\u61c9\u6ce8\u610f\u54ea\u4e9b\u554f\u984c"},"content":{"rendered":"

\u5f9e Oracle \u5411 PG \u985e\u6578\u64da\u5eab\u9077\u79fb\u6642\u61c9\u6ce8\u610f\u54ea\u4e9b\u554f\u984c<\/h1>\n

\u96a8\u8457\u4f01\u696d\u5c0d\u6578\u64da\u5eab\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u7d44\u7e54\u9078\u64c7\u5c07\u5176\u6578\u64da\u5eab\u5f9e Oracle \u9077\u79fb\u5230 PostgreSQL\uff08PG\uff09\u3002PostgreSQL \u662f\u4e00\u500b\u958b\u6e90\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u4ee5\u5176\u7a69\u5b9a\u6027\u548c\u9748\u6d3b\u6027\u800c\u805e\u540d\u3002\u7136\u800c\uff0c\u9019\u4e00\u904e\u7a0b\u4e26\u975e\u6c92\u6709\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728\u5f9e Oracle \u5411 PG \u985e\u6578\u64da\u5eab\u9077\u79fb\u6642\u61c9\u6ce8\u610f\u7684\u5e7e\u500b\u95dc\u9375\u554f\u984c\u3002<\/p>\n

1. \u6578\u64da\u985e\u578b\u7684\u5dee\u7570<\/h2>\n

Oracle \u548c PostgreSQL \u5728\u6578\u64da\u985e\u578b\u4e0a\u5b58\u5728\u4e00\u4e9b\u5dee\u7570\u3002\u4f8b\u5982\uff0cOracle \u7684 NUMBER<\/code> \u985e\u578b\u5728 PostgreSQL \u4e2d\u53ef\u4ee5\u4f7f\u7528 NUMERIC<\/code> \u6216 DECIMAL<\/code> \u4f86\u66ff\u4ee3\uff0c\u800c VARCHAR2<\/code> \u5247\u53ef\u4ee5\u7528 VARCHAR<\/code> \u4f86\u8868\u793a\u3002\u9019\u4e9b\u5dee\u7570\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u5b8c\u6574\u6027\uff0c\u56e0\u6b64\u5728\u9077\u79fb\u4e4b\u524d\uff0c\u5fc5\u9808\u4ed4\u7d30\u6aa2\u67e5\u548c\u6620\u5c04\u6578\u64da\u985e\u578b\u3002<\/p>\n

2. SQL \u8a9e\u6cd5\u7684\u5dee\u7570<\/h2>\n

\u96d6\u7136 Oracle \u548c PostgreSQL \u90fd\u4f7f\u7528 SQL\uff0c\u4f46\u5b83\u5011\u7684 SQL \u8a9e\u6cd5\u5b58\u5728\u4e00\u4e9b\u5dee\u7570\u3002\u4f8b\u5982\uff0cOracle \u4f7f\u7528 ROWNUM<\/code> \u4f86\u9650\u5236\u67e5\u8a62\u7d50\u679c\u7684\u884c\u6578\uff0c\u800c PostgreSQL \u5247\u4f7f\u7528 LIMIT<\/code>\u3002\u6b64\u5916\uff0c\u67d0\u4e9b\u51fd\u6578\u5728\u5169\u8005\u4e4b\u9593\u7684\u540d\u7a31\u548c\u7528\u6cd5\u4e5f\u6709\u6240\u4e0d\u540c\u3002\u56e0\u6b64\uff0c\u5728\u9077\u79fb\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u4eba\u54e1\u9700\u8981\u5c0d SQL \u67e5\u8a62\u9032\u884c\u8abf\u6574\uff0c\u4ee5\u78ba\u4fdd\u5176\u5728 PostgreSQL \u4e2d\u80fd\u5920\u6b63\u5e38\u904b\u884c\u3002<\/p>\n

3. \u5b58\u5132\u904e\u7a0b\u548c\u89f8\u767c\u5668\u7684\u8f49\u63db<\/h2>\n

Oracle \u7684\u5b58\u5132\u904e\u7a0b\u548c\u89f8\u767c\u5668\u5728 PostgreSQL \u4e2d\u7684\u5be6\u73fe\u65b9\u5f0f\u6709\u6240\u4e0d\u540c\u3002Oracle \u4f7f\u7528 PL\/SQL\uff0c\u800c PostgreSQL \u5247\u4f7f\u7528 PL\/pgSQL\u3002\u9019\u610f\u5473\u8457\u5728\u9077\u79fb\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u4eba\u54e1\u9700\u8981\u91cd\u5beb\u5b58\u5132\u904e\u7a0b\u548c\u89f8\u767c\u5668\u7684\u4ee3\u78bc\uff0c\u4ee5\u7b26\u5408 PostgreSQL \u7684\u8a9e\u6cd5\u548c\u7279\u6027\u3002<\/p>\n

4. \u6027\u80fd\u512a\u5316<\/h2>\n

\u5728\u9077\u79fb\u5f8c\uff0c\u6027\u80fd\u512a\u5316\u662f\u53e6\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002PostgreSQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u6027\u80fd\u512a\u5316\u5de5\u5177\u548c\u6280\u8853\uff0c\u4f8b\u5982\u7d22\u5f15\u3001\u67e5\u8a62\u8a08\u5283\u548c\u7de9\u5b58\u7ba1\u7406\u3002\u9077\u79fb\u5f8c\uff0c\u61c9\u8a72\u5c0d\u6578\u64da\u5eab\u9032\u884c\u6027\u80fd\u6e2c\u8a66\uff0c\u4e26\u6839\u64da\u6e2c\u8a66\u7d50\u679c\u9032\u884c\u8abf\u6574\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n

5. \u6578\u64da\u9077\u79fb\u5de5\u5177\u7684\u9078\u64c7<\/h2>\n

\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u9077\u79fb\u5de5\u5177\u5c0d\u65bc\u6210\u529f\u9077\u79fb\u81f3\u95dc\u91cd\u8981\u3002\u5e02\u9762\u4e0a\u6709\u591a\u7a2e\u5de5\u5177\u53ef\u4f9b\u9078\u64c7\uff0c\u4f8b\u5982 pgLoader<\/code> \u548c Ora2Pg<\/code>\u3002\u9019\u4e9b\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u81ea\u52d5\u5316\u6578\u64da\u9077\u79fb\u904e\u7a0b\uff0c\u6e1b\u5c11\u624b\u52d5\u64cd\u4f5c\u7684\u932f\u8aa4\u98a8\u96aa\u3002\u5728\u9078\u64c7\u5de5\u5177\u6642\uff0c\u61c9\u8003\u616e\u5176\u529f\u80fd\u3001\u6613\u7528\u6027\u548c\u793e\u5340\u652f\u6301\u7b49\u56e0\u7d20\u3002<\/p>\n

6. \u6e2c\u8a66\u548c\u9a57\u8b49<\/h2>\n

\u5728\u5b8c\u6210\u9077\u79fb\u5f8c\uff0c\u9032\u884c\u5168\u9762\u7684\u6e2c\u8a66\u548c\u9a57\u8b49\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u9019\u5305\u62ec\u6578\u64da\u5b8c\u6574\u6027\u6aa2\u67e5\u3001\u6027\u80fd\u6e2c\u8a66\u548c\u529f\u80fd\u6e2c\u8a66\u3002\u78ba\u4fdd\u6240\u6709\u61c9\u7528\u7a0b\u5e8f\u5728\u65b0\u6578\u64da\u5eab\u4e0a\u6b63\u5e38\u904b\u884c\uff0c\u4e26\u4e14\u6578\u64da\u7684\u6e96\u78ba\u6027\u672a\u53d7\u5230\u5f71\u97ff\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u5f9e Oracle \u5411 PostgreSQL \u7684\u9077\u79fb\u662f\u4e00\u500b\u8907\u96dc\u7684\u904e\u7a0b\uff0c\u9700\u8981\u4ed4\u7d30\u8003\u616e\u591a\u500b\u56e0\u7d20\uff0c\u5305\u62ec\u6578\u64da\u985e\u578b\u3001SQL \u8a9e\u6cd5\u3001\u5b58\u5132\u904e\u7a0b\u3001\u6027\u80fd\u512a\u5316\u3001\u6578\u64da\u9077\u79fb\u5de5\u5177\u7684\u9078\u64c7\u4ee5\u53ca\u6e2c\u8a66\u548c\u9a57\u8b49\u3002\u901a\u904e\u5145\u5206\u7684\u6e96\u5099\u548c\u8a08\u5283\uff0c\u4f01\u696d\u53ef\u4ee5\u9806\u5229\u5b8c\u6210\u9077\u79fb\uff0c\u4e26\u5145\u5206\u5229\u7528 PostgreSQL \u7684\u512a\u52e2\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e86\u89e3\u5f9e Oracle \u9077\u79fb\u81f3 PG \u985e\u6578\u64da\u5eab\u6642\u9700\u6ce8\u610f\u7684\u95dc\u9375\u554f\u984c\uff0c\u5305\u62ec\u6578\u64da\u517c\u5bb9\u6027\u3001\u6027\u80fd\u8abf\u6574\u53ca\u5de5\u5177\u9078\u64c7\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-153165","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=153165"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153165\/revisions"}],"predecessor-version":[{"id":153166,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153165\/revisions\/153166"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}