{"id":164013,"date":"2024-11-05T04:18:29","date_gmt":"2024-11-04T20:18:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164013\/"},"modified":"2024-11-05T04:18:30","modified_gmt":"2024-11-04T20:18:30","slug":"%e8%a7%a3%e6%9e%90oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86%e5%8f%8a%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-orcle%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164013\/","title":{"rendered":"\u89e3\u6790Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406\u53ca\u512a\u5316\u65b9\u6cd5 (orcle\u6578\u64da\u5eab\u7d22\u5f15)"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%9e%90oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86%e5%8f%8a%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-niyQdxbUGS\">\u89e3\u6790Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406\u53ca\u512a\u5316\u65b9\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5176\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406\u548c\u512a\u5316\u65b9\u6cd5\u5c0d\u65bc\u6578\u64da\u5eab\u6027\u80fd\u7684\u63d0\u5347\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5be6\u73fe\u539f\u7406\u4ee5\u53ca\u512a\u5316\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%a2%e5%bc%95%ef%bc%9f-niyQdxbUGS\">\u4ec0\u9ebc\u662f\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u65e8\u5728\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u7d22\u5f15\u53ef\u4ee5\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u7d22\u5f15\u7684\u4f5c\u7528\u5c24\u70ba\u660e\u986f\u3002<\/p>\n<h2 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%a2%e5%bc%95%e7%9a%84%e9%a1%9e%e5%9e%8b-niyQdxbUGS\">Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>B\u6a39\u7d22\u5f15\uff08B-Tree Index\uff09<\/strong>: \u9019\u662fOracle\u4e2d\u6700\u5e38\u7528\u7684\u7d22\u5f15\u985e\u578b\uff0c\u9069\u7528\u65bc\u5927\u591a\u6578\u67e5\u8a62\u3002B\u6a39\u7d22\u5f15\u80fd\u5920\u6709\u6548\u5730\u652f\u6301\u7bc4\u570d\u67e5\u8a62\u3002<\/li>\n<li><strong>\u4f4d\u5716\u7d22\u5f15\uff08Bitmap Index\uff09<\/strong>: \u9069\u5408\u65bc\u4f4e\u57fa\u6578\u5217\uff08\u5373\u5217\u4e2d\u4e0d\u540c\u503c\u7684\u6578\u91cf\u8f03\u5c11\uff09\u7684\u7d22\u5f15\uff0c\u901a\u5e38\u7528\u65bc\u6578\u64da\u5009\u5eab\u74b0\u5883\u3002<\/li>\n<li><strong>\u53cd\u5411\u7d22\u5f15\uff08Reverse Key Index\uff09<\/strong>: \u7528\u65bc\u9632\u6b62B\u6a39\u7d22\u5f15\u7684\u71b1\u9ede\u554f\u984c\uff0c\u901a\u904e\u53cd\u8f49\u9375\u503c\u4f86\u5206\u6563\u6578\u64da\u3002<\/li>\n<li><strong>\u51fd\u6578\u7d22\u5f15\uff08Function-Based Index\uff09<\/strong>: \u5141\u8a31\u5c0d\u8868\u4e2d\u7684\u8a08\u7b97\u7d50\u679c\u9032\u884c\u7d22\u5f15\uff0c\u9069\u5408\u65bc\u9700\u8981\u5c0d\u67d0\u4e9b\u8a08\u7b97\u7d50\u679c\u9032\u884c\u67e5\u8a62\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86-niyQdxbUGS\">\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u4e2d\u7684\u7d22\u5f15\u4e3b\u8981\u57fa\u65bcB\u6a39\u7d50\u69cb\u3002B\u6a39\u662f\u4e00\u7a2e\u81ea\u5e73\u8861\u7684\u6a39\u5f62\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u4fdd\u6301\u6578\u64da\u6709\u5e8f\u4e26\u652f\u6301\u9ad8\u6548\u7684\u63d2\u5165\u3001\u522a\u9664\u548c\u67e5\u8a62\u64cd\u4f5c\u3002\u6bcf\u500bB\u6a39\u7bc0\u9ede\u53ef\u4ee5\u5305\u542b\u591a\u500b\u9375\u503c\uff0c\u4e26\u4e14\u6bcf\u500b\u9375\u503c\u90fd\u6307\u5411\u76f8\u61c9\u7684\u6578\u64da\u884c\u3002\u9019\u6a23\u7684\u7d50\u69cb\u4f7f\u5f97\u67e5\u8a62\u64cd\u4f5c\u7684\u6642\u9593\u8907\u96dc\u5ea6\u964d\u4f4e\u5230O(log n)\u3002<\/p>\n<p>\u7576\u57f7\u884c\u67e5\u8a62\u6642\uff0cOracle\u6703\u9996\u5148\u5728\u7d22\u5f15\u4e2d\u67e5\u627e\u6240\u9700\u7684\u9375\u503c\uff0c\u7136\u5f8c\u6839\u64da\u7d22\u5f15\u6307\u5411\u7684\u884c\u865f\u5feb\u901f\u5b9a\u4f4d\u5230\u6578\u64da\u8868\u4e2d\u7684\u5177\u9ad4\u884c\u3002\u9019\u6a23\u7684\u67e5\u8a62\u65b9\u5f0f\u5927\u5927\u63d0\u9ad8\u4e86\u67e5\u8a62\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u6578\u64da\u91cf\u6642\u3002<\/p>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-niyQdxbUGS\">\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6cd5<\/h2>\n<p>\u5118\u7ba1\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u4e0d\u7576\u7684\u7d22\u5f15\u4f7f\u7528\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e9%81%a9%e7%95%b6%e9%81%b8%e6%93%87%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-niyQdxbUGS\">1. \u9069\u7576\u9078\u64c7\u7d22\u5f15\u985e\u578b<\/h3>\n<p>\u6839\u64da\u6578\u64da\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u9ad8\u57fa\u6578\u7684\u5217\uff0c\u4f7f\u7528B\u6a39\u7d22\u5f15\uff1b\u5c0d\u65bc\u4f4e\u57fa\u6578\u7684\u5217\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u4f4d\u5716\u7d22\u5f15\u3002<\/p>\n<h3 id=\"2-%e5%ae%9a%e6%9c%9f%e9%87%8d%e5%bb%ba%e7%b4%a2%e5%bc%95-niyQdxbUGS\">2. \u5b9a\u671f\u91cd\u5efa\u7d22\u5f15<\/h3>\n<p>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\u548c\u8b8a\u5316\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u6d88\u9664\u788e\u7247\uff0c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%a6%86%e8%93%8b%e7%b4%a2%e5%bc%95-niyQdxbUGS\">3. \u4f7f\u7528\u8986\u84cb\u7d22\u5f15<\/h3>\n<p>\u8986\u84cb\u7d22\u5f15\u662f\u6307\u7d22\u5f15\u4e2d\u5305\u542b\u4e86\u67e5\u8a62\u6240\u9700\u7684\u6240\u6709\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u56de\u8868\u67e5\u8a62\uff0c\u9032\u4e00\u6b65\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h3 id=\"4-%e6%b8%9b%e5%b0%91%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e7%b4%a2%e5%bc%95-niyQdxbUGS\">4. \u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15<\/h3>\n<p>\u904e\u591a\u7684\u7d22\u5f15\u6703\u589e\u52a0\u6578\u64da\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u7684\u6210\u672c\uff0c\u56e0\u6b64\u61c9\u8a72\u5b9a\u671f\u5be9\u67e5\u548c\u522a\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-niyQdxbUGS\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406\u548c\u512a\u5316\u65b9\u6cd5\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u9078\u64c7\u7d22\u5f15\u985e\u578b\u3001\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u3001\u4f7f\u7528\u8986\u84cb\u7d22\u5f15\u4ee5\u53ca\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u964d\u4f4e\u6578\u64da\u5eab\u7684\u904b\u884c\u6210\u672c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u696d\u52d9\u904b\u71df\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u89e3\u6790Oracle\u6578\u64da\u5eab\u7d22\u5f15\u7684\u5be6\u73fe\u539f\u7406\uff0c\u63a2\u8a0e\u512a\u5316\u65b9\u6cd5\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\u8207\u6027\u80fd\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-164013","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164013","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=164013"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164013\/revisions"}],"predecessor-version":[{"id":164014,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164013\/revisions\/164014"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}