{"id":96324,"date":"2024-10-20T08:28:17","date_gmt":"2024-10-20T00:28:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96324\/"},"modified":"2024-10-20T08:28:17","modified_gmt":"2024-10-20T00:28:17","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%81%b8%e6%93%87%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b7%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%ab%85%e9%96%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96324\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u4e2d\u9078\u64c7\u7d22\u5f15\u7684\u7dda\u985e\u578b\u7684\u7ac5\u9580"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%81%b8%e6%93%87%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b7%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%ab%85%e9%96%80-nUhCfiBGWl\">Oracle\u6578\u64da\u5eab\u4e2d\u9078\u64c7\u7d22\u5f15\u7684\u7dda\u985e\u578b\u7684\u7ac5\u9580<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u5c0d\u65bc\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u6578\u64da\u5eab\u4e2d\u4e0d\u540c\u7684\u7d22\u5f15\u985e\u578b\u53ca\u5176\u9069\u7528\u5834\u666f\uff0c\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u505a\u51fa\u660e\u667a\u7684\u9078\u64c7\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-nUhCfiBGWl\">\u7d22\u5f15\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u52a0\u901f\u67e5\u8a62\u64cd\u4f5c\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u5728Oracle\u4e2d\uff0c\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-nUhCfiBGWl\">Oracle\u4e2d\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u6bcf\u7a2e\u7d22\u5f15\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u512a\u7f3a\u9ede\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u7d22\u5f15\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>B\u6a39\u7d22\u5f15\uff08B-tree Index\uff09<\/strong>: \u9019\u662f\u6700\u5e38\u7528\u7684\u7d22\u5f15\u985e\u578b\uff0c\u9069\u7528\u65bc\u5927\u591a\u6578\u67e5\u8a62\u3002B\u6a39\u7d22\u5f15\u80fd\u5920\u652f\u6301\u7bc4\u570d\u67e5\u8a62\u548c\u7cbe\u78ba\u67e5\u8a62\uff0c\u4e26\u4e14\u5728\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u6642\u6027\u80fd\u8868\u73fe\u826f\u597d\u3002<\/li>\n<li><strong>\u4f4d\u5716\u7d22\u5f15\uff08Bitmap Index\uff09<\/strong>: \u4f4d\u5716\u7d22\u5f15\u9069\u5408\u65bc\u4f4e\u57fa\u6578\u7684\u5217\uff08\u5373\u5217\u4e2d\u4e0d\u540c\u503c\u7684\u6578\u91cf\u8f03\u5c11\uff09\u3002\u5b83\u4f7f\u7528\u4f4d\u5716\u4f86\u8868\u793a\u6bcf\u500b\u503c\u7684\u5b58\u5728\u8207\u5426\uff0c\u5c0d\u65bc\u5206\u6790\u67e5\u8a62\u975e\u5e38\u6709\u6548\u3002<\/li>\n<li><strong>\u53cd\u5411\u9375\u7d22\u5f15\uff08Reverse Key Index\uff09<\/strong>: \u9019\u7a2e\u7d22\u5f15\u5c07\u9375\u503c\u53cd\u8f49\uff0c\u9069\u5408\u65bc\u9632\u6b62\u63d2\u5165\u6642\u7684\u71b1\u9ede\u554f\u984c\u3002\u5b83\u7279\u5225\u9069\u5408\u65bc\u5e8f\u5217\u751f\u6210\u7684\u5217\u3002<\/li>\n<li><strong>\u51fd\u6578\u7d22\u5f15\uff08Function-based Index\uff09<\/strong>: \u7576\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u51fd\u6578\u6642\uff0c\u53ef\u4ee5\u5275\u5efa\u51fd\u6578\u7d22\u5f15\u4f86\u63d0\u9ad8\u6027\u80fd\u3002\u9019\u7a2e\u7d22\u5f15\u57fa\u65bc\u5217\u7684\u8a08\u7b97\u7d50\u679c\u3002<\/li>\n<li><strong>\u805a\u96c6\u7d22\u5f15\uff08Clustered Index\uff09<\/strong>: \u805a\u96c6\u7d22\u5f15\u5c07\u6578\u64da\u884c\u5b58\u5132\u5728\u7d22\u5f15\u7684\u9806\u5e8f\u4e2d\uff0c\u9069\u5408\u65bc\u7bc4\u570d\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-nUhCfiBGWl\">\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u9700\u8981\u8003\u616e\u591a\u500b\u56e0\u7d20\uff0c\u5305\u62ec\u67e5\u8a62\u6a21\u5f0f\u3001\u6578\u64da\u5206\u4f48\u548c\u6027\u80fd\u9700\u6c42\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9078\u64c7\u7d22\u5f15\u985e\u578b\u7684\u5efa\u8b70\uff1a<\/p>\n<h3 id=\"1-%e6%9f%a5%e8%a9%a2%e6%a8%a1%e5%bc%8f%e5%88%86%e6%9e%90-nUhCfiBGWl\">1. \u67e5\u8a62\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5728\u9078\u64c7\u7d22\u5f15\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5206\u6790\u67e5\u8a62\u6a21\u5f0f\u3002\u5c0d\u65bc\u7d93\u5e38\u9032\u884c\u7bc4\u570d\u67e5\u8a62\u7684\u5217\uff0cB\u6a39\u7d22\u5f15\u662f\u6700\u4f73\u9078\u64c7\uff1b\u800c\u5c0d\u65bc\u7d93\u5e38\u9032\u884c\u5206\u6790\u67e5\u8a62\u7684\u4f4e\u57fa\u6578\u5217\uff0c\u4f4d\u5716\u7d22\u5f15\u5247\u66f4\u70ba\u5408\u9069\u3002<\/p>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e5%88%86%e4%bd%88-nUhCfiBGWl\">2. \u6578\u64da\u5206\u4f48<\/h3>\n<p>\u6578\u64da\u7684\u5206\u4f48\u60c5\u6cc1\u4e5f\u6703\u5f71\u97ff\u7d22\u5f15\u7684\u9078\u64c7\u3002\u5982\u679c\u67d0\u4e00\u5217\u7684\u503c\u5206\u4f48\u4e0d\u5747\uff0c\u5247\u53ef\u80fd\u9700\u8981\u8003\u616e\u4f7f\u7528\u53cd\u5411\u9375\u7d22\u5f15\u4f86\u907f\u514d\u71b1\u9ede\u554f\u984c\u3002<\/p>\n<h3 id=\"3-%e6%80%a7%e8%83%bd%e9%9c%80%e6%b1%82-nUhCfiBGWl\">3. \u6027\u80fd\u9700\u6c42<\/h3>\n<p>\u5728\u6027\u80fd\u9700\u6c42\u65b9\u9762\uff0c\u61c9\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u4f86\u9078\u64c7\u7d22\u5f15\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u9700\u8981\u983b\u7e41\u66f4\u65b0\u7684\u8868\uff0cB\u6a39\u7d22\u5f15\u53ef\u80fd\u66f4\u5408\u9069\uff0c\u56e0\u70ba\u5b83\u5728\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u6642\u6027\u80fd\u8f03\u597d\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b6%ad%e8%ad%b7-nUhCfiBGWl\">\u7d22\u5f15\u7684\u7dad\u8b77<\/h2>\n<p>\u7d22\u5f15\u7684\u7dad\u8b77\u540c\u6a23\u91cd\u8981\u3002\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\u548c\u8b8a\u5316\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u56e0\u6b64\uff0c\u5b9a\u671f\u91cd\u5efa\u548c\u5206\u6790\u7d22\u5f15\u662f\u5fc5\u8981\u7684\uff0c\u4ee5\u78ba\u4fdd\u67e5\u8a62\u6027\u80fd\u7684\u7a69\u5b9a\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nUhCfiBGWl\">\u7e3d\u7d50<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u5c0d\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5206\u6790\u67e5\u8a62\u6a21\u5f0f\u3001\u6578\u64da\u5206\u4f48\u548c\u6027\u80fd\u9700\u6c42\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u505a\u51fa\u660e\u667a\u7684\u9078\u64c7\u3002\u7121\u8ad6\u662f\u4f7f\u7528B\u6a39\u7d22\u5f15\u3001\u4f4d\u5716\u7d22\u5f15\u9084\u662f\u51fd\u6578\u7d22\u5f15\uff0c\u6b63\u78ba\u7684\u7d22\u5f15\u7b56\u7565\u90fd\u80fd\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Oracle\u6578\u64da\u5eab\u4e2d\u9078\u64c7\u7d22\u5f15\u7684\u7dda\u985e\u578b\u7684\u7ac5\u9580\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\uff0c\u52a9\u529b\u6578\u64da\u7ba1\u7406\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-96324","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96324","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=96324"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96324\/revisions"}],"predecessor-version":[{"id":96325,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96324\/revisions\/96325"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}