{"id":96148,"date":"2024-10-20T07:00:20","date_gmt":"2024-10-19T23:00:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96148\/"},"modified":"2024-10-20T07:00:21","modified_gmt":"2024-10-19T23:00:21","slug":"oracle%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e4%b9%8b%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96148\/","title":{"rendered":"Oracle\u6027\u80fd\u512a\u5316\u4e4b\u865b\u64ec\u7d22\u5f15"},"content":{"rendered":"<h1 id=\"oracle%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e4%b9%8b%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95-pYEmzyZstO\">Oracle\u6027\u80fd\u512a\u5316\u4e4b\u865b\u64ec\u7d22\u5f15<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6027\u80fd\u512a\u5316\u662f\u78ba\u4fdd\u7cfb\u7d71\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6027\u80fd\u512a\u5316\u6280\u8853\uff0c\u5176\u4e2d\u865b\u64ec\u7d22\u5f15\uff08Virtual Index\uff09\u662f\u4e00\u500b\u76f8\u5c0d\u8f03\u65b0\u7684\u6982\u5ff5\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u4e0d\u5be6\u969b\u5275\u5efa\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\uff0c\u8a55\u4f30\u7d22\u5f15\u7684\u6027\u80fd\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95%ef%bc%9f-pYEmzyZstO\">\u4ec0\u9ebc\u662f\u865b\u64ec\u7d22\u5f15\uff1f<\/h2>\n<p>\u865b\u64ec\u7d22\u5f15\u662f\u4e00\u7a2e\u4e0d\u4f54\u7528\u7269\u7406\u5b58\u5132\u7a7a\u9593\u7684\u7d22\u5f15\u7d50\u69cb\u3002\u5b83\u5141\u8a31\u7528\u6236\u5728\u4e0d\u5be6\u969b\u5275\u5efa\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\uff0c\u6e2c\u8a66\u548c\u8a55\u4f30\u7d22\u5f15\u7684\u6027\u80fd\u3002\u9019\u5c0d\u65bc\u9700\u8981\u983b\u7e41\u8abf\u6574\u7d22\u5f15\u7684\u74b0\u5883\u4f86\u8aaa\uff0c\u7121\u7591\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u3002<\/p>\n<h2 id=\"%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8b%a2-pYEmzyZstO\">\u865b\u64ec\u7d22\u5f15\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u7121\u9700\u7269\u7406\u5b58\u5132\uff1a<\/strong>\u865b\u64ec\u7d22\u5f15\u4e0d\u6703\u4f54\u7528\u5be6\u969b\u7684\u78c1\u789f\u7a7a\u9593\uff0c\u9019\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u6e2c\u8a66\u3002<\/li>\n<li><strong>\u5feb\u901f\u8a55\u4f30\uff1a<\/strong>\u7528\u6236\u53ef\u4ee5\u5feb\u901f\u8a55\u4f30\u4e0d\u540c\u7d22\u5f15\u7b56\u7565\u7684\u6027\u80fd\uff0c\u5f9e\u800c\u9078\u64c7\u6700\u4f73\u7684\u7d22\u5f15\u65b9\u6848\u3002<\/li>\n<li><strong>\u964d\u4f4e\u98a8\u96aa\uff1a<\/strong>\u5728\u5be6\u969b\u5275\u5efa\u7d22\u5f15\u4e4b\u524d\uff0c\u4f7f\u7528\u865b\u64ec\u7d22\u5f15\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u8b58\u5225\u6f5b\u5728\u7684\u6027\u80fd\u554f\u984c\uff0c\u964d\u4f4e\u5be6\u65bd\u98a8\u96aa\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95-pYEmzyZstO\">\u5982\u4f55\u5275\u5efa\u865b\u64ec\u7d22\u5f15<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u5275\u5efa\u865b\u64ec\u7d22\u5f15\u7684\u8a9e\u6cd5\u8207\u5275\u5efa\u5e38\u898f\u7d22\u5f15\u76f8\u4f3c\uff0c\u4f46\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u53c3\u6578\u4f86\u6307\u793a\u8a72\u7d22\u5f15\u70ba\u865b\u64ec\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_virtual ON table_name(column_name) VIRTUAL;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`table_name`\u662f\u4f60\u8981\u7d22\u5f15\u7684\u8868\u540d\uff0c\u800c`column_name`\u662f\u4f60\u5e0c\u671b\u7d22\u5f15\u7684\u5217\u540d\u3002\u4f7f\u7528`VIRTUAL`\u95dc\u9375\u5b57\u4f86\u6307\u793a\u9019\u662f\u4e00\u500b\u865b\u64ec\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e8%99%9b%e6%93%ac%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-pYEmzyZstO\">\u865b\u64ec\u7d22\u5f15\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u865b\u64ec\u7d22\u5f15\u7279\u5225\u9069\u5408\u65bc\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u6e2c\u8a66\uff1a<\/strong>\u5728\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u6642\uff0c\u865b\u64ec\u7d22\u5f15\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u4eba\u54e1\u5feb\u901f\u8a55\u4f30\u4e0d\u540c\u7684\u7d22\u5f15\u7b56\u7565\u3002<\/li>\n<li><strong>\u7d22\u5f15\u8abf\u6574\uff1a<\/strong>\u7576\u9700\u8981\u8abf\u6574\u73fe\u6709\u7d22\u5f15\u6642\uff0c\u865b\u64ec\u7d22\u5f15\u53ef\u4ee5\u4f5c\u70ba\u4e00\u500b\u5b89\u5168\u7684\u6e2c\u8a66\u5de5\u5177\u3002<\/li>\n<li><strong>\u67e5\u8a62\u512a\u5316\uff1a<\/strong>\u5728\u67e5\u8a62\u512a\u5316\u904e\u7a0b\u4e2d\uff0c\u865b\u64ec\u7d22\u5f15\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u54ea\u4e9b\u7d22\u5f15\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-pYEmzyZstO\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5118\u7ba1\u865b\u64ec\u7d22\u5f15\u63d0\u4f9b\u4e86\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4ecd\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u865b\u64ec\u7d22\u5f15\u4e0d\u6703\u5f71\u97ff\u5be6\u969b\u7684\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u70ba\u5b83\u5011\u4e26\u4e0d\u4f54\u7528\u7269\u7406\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li>\u5728\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u6642\uff0c\u61c9\u8a72\u8207\u5be6\u969b\u7d22\u5f15\u9032\u884c\u6bd4\u8f03\uff0c\u4ee5\u7372\u5f97\u66f4\u6e96\u78ba\u7684\u7d50\u679c\u3002<\/li>\n<li>\u865b\u64ec\u7d22\u5f15\u7684\u4f7f\u7528\u61c9\u8a72\u8207\u5176\u4ed6\u6027\u80fd\u512a\u5316\u6280\u8853\u7d50\u5408\uff0c\u4ee5\u9054\u5230\u6700\u4f73\u6548\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pYEmzyZstO\">\u7e3d\u7d50<\/h2>\n<p>\u865b\u64ec\u7d22\u5f15\u4f5c\u70baOracle\u6027\u80fd\u512a\u5316\u7684\u4e00\u7a2e\u6709\u6548\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u4e0d\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u7d22\u5f15\u8a55\u4f30\u548c\u8abf\u6574\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u865b\u64ec\u7d22\u5f15\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u964d\u4f4e\u5be6\u65bd\u98a8\u96aa\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\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u6216<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u6709\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6027\u80fd\u512a\u5316\u4e2d\u7684\u865b\u64ec\u7d22\u5f15\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u6e1b\u5c11\u8cc7\u6e90\u6d88\u8017\uff0c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u8a2a\u554f\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-96148","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96148","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=96148"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96148\/revisions"}],"predecessor-version":[{"id":96149,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96148\/revisions\/96149"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}