{"id":5363,"date":"2024-11-14T11:09:40","date_gmt":"2024-11-14T03:09:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5363\/"},"modified":"2024-11-14T11:09:40","modified_gmt":"2024-11-14T03:09:40","slug":"oracle%e7%b4%a2%e5%bc%95%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5363\/","title":{"rendered":"oracle\u7d22\u5f15\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  oracle \u7d22\u5f15\u662f\u7279\u6b8a\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5b58\u50a8\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u6765\u52a0\u901f\u6570\u636e\u7684\u8bbf\u95ee\uff0c\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002oracle \u63d0\u4f9b\u591a\u79cd\u7d22\u5f15\u7c7b\u578b\uff0c\u5305\u62ec b-tree \u7d22\u5f15\u3001\u4f4d\u56fe\u7d22\u5f15\u3001\u51fd\u6570\u7d22\u5f15\u548c\u54c8\u5e0c\u7d22\u5f15\u3002\u7d22\u5f15\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u7ecf\u5e38\u8fc7\u6ee4\u7279\u5b9a\u5217\u6216\u8bbf\u95ee\u5927\u8868\u7684\u6570\u636e\u67e5\u8be2\uff0c\u4f46\u521b\u5efa\u548c\u7ef4\u62a4\u7d22\u5f15\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\u548c\u5f00\u9500\uff0c\u5927\u91cf\u7d22\u5f15\u4e5f\u53ef\u80fd\u964d\u4f4e\u67e5\u8be2\u6548\u7387\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/26\/2024052620213993856.jpg\" class=\"aligncenter\" title=\"oracle\u7d22\u5f15\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"oracle\u7d22\u5f15\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>Oracle \u7d22\u5f15\u7684\u7528\u9014<\/strong><\/p>\n<p>\u7d22\u5f15\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5b83\u6709\u52a9\u4e8e\u52a0\u5feb\u5bf9\u6570\u636e\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u8fdb\u800c\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p><strong>\u7d22\u5f15\u7684\u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n<p>\u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u7279\u6b8a\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u57fa\u4e8e\u8868\u7684\u5217\u503c\u521b\u5efa\u3002\u7d22\u5f15\u4e2d\u5b58\u50a8\u7740\u6307\u5411\u8868\u4e2d\u5b9e\u9645\u6570\u636e\u7684\u6307\u9488\uff0c\u8fd9\u4e9b\u6307\u9488\u6839\u636e\u5217\u503c\u8fdb\u884c\u6392\u5e8f\u3002\u5f53\u5bf9\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0cOracle \u5c06\u4f7f\u7528\u7d22\u5f15\u67e5\u627e\u7279\u5b9a\u503c\uff0c\u4ece\u800c\u907f\u514d\u626b\u63cf\u6574\u4e2a\u8868\u3002<\/p>\n<p><strong>\u7d22\u5f15\u7684\u7c7b\u578b<\/strong><\/p>\n<p>Oracle \u63d0\u4f9b\u4e86\u591a\u79cd\u7c7b\u578b\u7684\u7d22\u5f15\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u6027\u80fd\u9700\u6c42\uff1a<\/p>\n<ul>\n<li> <strong>B-Tree \u7d22\u5f15<\/strong>\uff1a\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5b83\u4f7f\u7528\u5e73\u8861\u6811\u7ed3\u6784\u5b58\u50a8\u6570\u636e\u3002<\/li>\n<li> <strong>\u4f4d\u56fe\u7d22\u5f15<\/strong>\uff1a\u9002\u7528\u4e8e\u5177\u6709\u5927\u91cf\u91cd\u590d\u503c\u7684\u5217\u3002<\/li>\n<li> <strong>\u51fd\u6570\u7d22\u5f15<\/strong>\uff1a\u57fa\u4e8e\u5217\u503c\u4e0a\u7684\u8868\u8fbe\u5f0f\u521b\u5efa\u3002<\/li>\n<li> <strong>\u54c8\u5e0c\u7d22\u5f15<\/strong>\uff1a\u57fa\u4e8e\u6563\u5217\u7b97\u6cd5\u5b58\u50a8\u6570\u636e\uff0c\u9002\u5408\u7b49\u503c\u6bd4\u8f83\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<p><strong>\u521b\u5efa\u7d22\u5f15<\/strong><\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5728 Oracle \u4e2d\u521b\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre>CREATE INDEX index_name ON table_name (column_name);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f55\u65f6\u4f7f\u7528\u7d22\u5f15<\/strong><\/p>\n<p>\u7d22\u5f15\u5bf9\u4e8e\u4ee5\u4e0b\u60c5\u51b5\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<ul>\n<li>\u67e5\u8be2\u7ecf\u5e38\u57fa\u4e8e\u7279\u5b9a\u5217\u8fdb\u884c\u8fc7\u6ee4\u3002<\/li>\n<li>\u8868\u975e\u5e38\u5927\uff0c\u626b\u63cf\u6574\u4e2a\u8868\u4f1a\u8017\u8d39\u5927\u91cf\u65f6\u95f4\u3002<\/li>\n<li>\u67e5\u8be2\u9700\u8981\u8fd4\u56de\u5927\u91cf\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u7d22\u5f15\u7684\u9650\u5236<\/strong><\/p>\n<p>\u867d\u7136\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\uff1a<\/p>\n<ul>\n<li>\u521b\u5efa\u548c\u7ef4\u62a4\u7d22\u5f15\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\u548c\u5f00\u9500\u3002<\/li>\n<li>\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7d22\u5f15\u65e0\u6548\uff0c\u4ece\u800c\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<li>\u8fc7\u591a\u7684\u7d22\u5f15\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67e5\u8be2\u6548\u7387\u964d\u4f4e\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u7d22\u5f15\u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u7d22\u5f15\u662f\u7279\u6b8a\u6570\u636e\u7ed3\u6784\uff0c\u901a\u8fc7\u5b58\u50a8\u8868\u4e2d\u6570\u636e\u7684\u6307\u9488\u6765\u52a0\u901f\u6570\u636e\u7684\u8bbf\u95ee\uff0c\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002oracle \u63d0\u4f9b\u591a\u79cd\u7d22\u5f15\u7c7b\u578b\uff0c\u5305\u62ec b-tree \u7d22\u5f15\u3001\u4f4d\u56fe\u7d22\u5f15\u3001\u51fd\u6570\u7d22\u5f15\u548c\u54c8\u5e0c\u7d22\u5f15\u3002\u7d22\u5f15\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u7ecf\u5e38\u8fc7\u6ee4\u7279\u5b9a\u5217\u6216\u8bbf\u95ee\u5927\u8868\u7684\u6570\u636e\u67e5\u8be2\uff0c\u4f46\u521b\u5efa\u548c\u7ef4\u62a4\u7d22\u5f15\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\u548c\u5f00\u9500\uff0c\u5927\u91cf\u7d22\u5f15\u4e5f\u53ef\u80fd\u964d\u4f4e\u67e5\u8be2\u6548\u7387\u3002 Oracle \u7d22\u5f15\u7684\u7528\u9014 \u7d22\u5f15\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5b83\u6709\u52a9\u4e8e\u52a0\u5feb\u5bf9\u6570\u636e\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u8fdb\u800c\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002 \u7d22\u5f15\u7684\u5de5\u4f5c\u539f\u7406 \u7d22\u5f15\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u7279\u6b8a\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u57fa\u4e8e\u8868\u7684\u5217\u503c\u521b\u5efa\u3002\u7d22\u5f15\u4e2d\u5b58\u50a8\u7740\u6307\u5411\u8868\u4e2d\u5b9e\u9645\u6570\u636e\u7684\u6307\u9488\uff0c\u8fd9\u4e9b\u6307\u9488\u6839\u636e\u5217\u503c\u8fdb\u884c\u6392\u5e8f\u3002\u5f53\u5bf9\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0cOracle \u5c06\u4f7f\u7528\u7d22\u5f15\u67e5\u627e\u7279\u5b9a\u503c\uff0c\u4ece\u800c\u907f\u514d\u626b\u63cf\u6574\u4e2a\u8868\u3002 \u7d22\u5f15\u7684\u7c7b\u578b Oracle \u63d0\u4f9b\u4e86\u591a\u79cd\u7c7b\u578b\u7684\u7d22\u5f15\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u6027\u80fd\u9700\u6c42\uff1a B-Tree \u7d22\u5f15\uff1a\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5b83\u4f7f\u7528\u5e73\u8861\u6811\u7ed3\u6784\u5b58\u50a8\u6570\u636e\u3002 \u4f4d\u56fe\u7d22\u5f15\uff1a\u9002\u7528\u4e8e\u5177\u6709\u5927\u91cf\u91cd\u590d\u503c\u7684\u5217\u3002 \u51fd\u6570\u7d22\u5f15\uff1a\u57fa\u4e8e\u5217\u503c\u4e0a\u7684\u8868\u8fbe\u5f0f\u521b\u5efa\u3002 \u54c8\u5e0c\u7d22\u5f15\uff1a\u57fa\u4e8e\u6563\u5217\u7b97\u6cd5\u5b58\u50a8\u6570\u636e\uff0c\u9002\u5408\u7b49\u503c\u6bd4\u8f83\u67e5\u8be2\u3002 \u521b\u5efa\u7d22\u5f15 \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5728 Oracle \u4e2d\u521b\u5efa\u7d22\u5f15\uff1a CREATE INDEX index_name ON table_name (column_name); \u767b\u5f55\u540e\u590d\u5236 \u4f55\u65f6\u4f7f\u7528\u7d22\u5f15 \u7d22\u5f15\u5bf9\u4e8e\u4ee5\u4e0b\u60c5\u51b5\u975e\u5e38\u6709\u7528\uff1a \u67e5\u8be2\u7ecf\u5e38\u57fa\u4e8e\u7279\u5b9a\u5217\u8fdb\u884c\u8fc7\u6ee4\u3002 \u8868\u975e\u5e38\u5927\uff0c\u626b\u63cf\u6574\u4e2a\u8868\u4f1a\u8017\u8d39\u5927\u91cf\u65f6\u95f4\u3002 \u67e5\u8be2\u9700\u8981\u8fd4\u56de\u5927\u91cf\u884c\u3002 \u7d22\u5f15\u7684\u9650\u5236 \u867d\u7136\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\uff1a \u521b\u5efa\u548c\u7ef4\u62a4\u7d22\u5f15\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\u548c\u5f00\u9500\u3002 \u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7d22\u5f15\u65e0\u6548\uff0c\u4ece\u800c\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\u3002 \u8fc7\u591a\u7684\u7d22\u5f15\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67e5\u8be2\u6548\u7387\u964d\u4f4e\u3002 \u4ee5\u4e0a\u5c31\u662f\u7d22\u5f15\u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5363","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5363"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5363\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}