{"id":63720,"date":"2024-10-14T01:55:15","date_gmt":"2024-10-13T17:55:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63720\/"},"modified":"2024-10-14T01:55:15","modified_gmt":"2024-10-13T17:55:15","slug":"mongodb%e8%a1%93%e8%aa%9e-%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95-2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63720\/","title":{"rendered":"MongoDB\u8853\u8a9e &#8211; \u8907\u5408\u7d22\u5f15"},"content":{"rendered":"<h1 id=\"mongodb%e8%a1%93%e8%aa%9e-%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95-jukUIIuCxC\">MongoDB\u8853\u8a9e &#8211; \u8907\u5408\u7d22\u5f15<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002MongoDB\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u6a5f\u5236\u4f86\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002\u5176\u4e2d\uff0c\u8907\u5408\u7d22\u5f15\uff08Compound Index\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u591a\u5b57\u6bb5\u67e5\u8a62\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95%ef%bc%9f-jukUIIuCxC\">\u4ec0\u9ebc\u662f\u8907\u5408\u7d22\u5f15\uff1f<\/h2>\n<p>\u8907\u5408\u7d22\u5f15\u662f\u6307\u5728MongoDB\u4e2d\uff0c\u91dd\u5c0d\u591a\u500b\u5b57\u6bb5\u5275\u5efa\u7684\u7d22\u5f15\u3002\u8207\u55ae\u5b57\u6bb5\u7d22\u5f15\u4e0d\u540c\uff0c\u8907\u5408\u7d22\u5f15\u53ef\u4ee5\u540c\u6642\u8003\u616e\u591a\u500b\u5b57\u6bb5\u7684\u503c\uff0c\u5f9e\u800c\u52a0\u901f\u57fa\u65bc\u9019\u4e9b\u5b57\u6bb5\u7684\u67e5\u8a62\u3002\u9019\u5c0d\u65bc\u9700\u8981\u540c\u6642\u67e5\u8a62\u591a\u500b\u689d\u4ef6\u7684\u5834\u666f\u7279\u5225\u6709\u7528\u3002<\/p>\n<h2 id=\"%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8b%a2-jukUIIuCxC\">\u8907\u5408\u7d22\u5f15\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff1a<\/strong>\u8907\u5408\u7d22\u5f15\u80fd\u5920\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\uff0c\u7279\u5225\u662f\u5728\u6d89\u53ca\u591a\u500b\u5b57\u6bb5\u7684\u67e5\u8a62\u6642\u3002<\/li>\n<li><strong>\u652f\u6301\u6392\u5e8f\uff1a<\/strong>\u8907\u5408\u7d22\u5f15\u4e0d\u50c5\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\uff0c\u9084\u53ef\u4ee5\u652f\u6301\u57fa\u65bc\u7d22\u5f15\u5b57\u6bb5\u7684\u6392\u5e8f\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u7bc0\u7701\u7a7a\u9593\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u8907\u5408\u7d22\u5f15\u53ef\u4ee5\u6e1b\u5c11\u7d22\u5f15\u7684\u6578\u91cf\uff0c\u5f9e\u800c\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95-jukUIIuCxC\">\u5982\u4f55\u5275\u5efa\u8907\u5408\u7d22\u5f15<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u5275\u5efa\u8907\u5408\u7d22\u5f15\u7684\u8a9e\u6cd5\u76f8\u5c0d\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u96c6\u5408\u4e2d\uff0c\u91dd\u5c0d\u201cage\u201d\u548c\u201ccity\u201d\u5b57\u6bb5\u5275\u5efa\u8907\u5408\u7d22\u5f15\uff1a<\/p>\n<pre><code>db.users.createIndex({ age: 1, city: 1 })<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`1`\u8868\u793a\u5347\u5e8f\u7d22\u5f15\u3002\u5982\u679c\u9700\u8981\u964d\u5e8f\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528`-1`\u4f86\u8868\u793a\uff1a<\/p>\n<pre><code>db.users.createIndex({ age: -1, city: 1 })<\/code><\/pre>\n<h2 id=\"%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-jukUIIuCxC\">\u8907\u5408\u7d22\u5f15\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u8907\u5408\u7d22\u5f15\u7279\u5225\u9069\u5408\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u591a\u689d\u4ef6\u67e5\u8a62\uff1a<\/strong>\u7576\u67e5\u8a62\u9700\u8981\u540c\u6642\u8003\u616e\u591a\u500b\u5b57\u6bb5\u7684\u503c\u6642\uff0c\u8907\u5408\u7d22\u5f15\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u7bc4\u570d\u67e5\u8a62\uff1a<\/strong>\u5982\u679c\u67e5\u8a62\u4e2d\u5305\u542b\u7bc4\u570d\u689d\u4ef6\uff08\u4f8b\u5982\u67e5\u8a62\u5e74\u9f61\u5728\u67d0\u500b\u7bc4\u570d\u5167\u7684\u7528\u6236\uff09\uff0c\u8907\u5408\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u9019\u985e\u67e5\u8a62\u3002<\/li>\n<li><strong>\u6392\u5e8f\u9700\u6c42\uff1a<\/strong>\u7576\u67e5\u8a62\u7d50\u679c\u9700\u8981\u6309\u7167\u67d0\u4e9b\u5b57\u6bb5\u6392\u5e8f\u6642\uff0c\u8907\u5408\u7d22\u5f15\u53ef\u4ee5\u76f4\u63a5\u652f\u6301\u9019\u4e00\u9700\u6c42\uff0c\u907f\u514d\u984d\u5916\u7684\u6392\u5e8f\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jukUIIuCxC\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136\u8907\u5408\u7d22\u5f15\u6709\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u7d22\u5f15\u5927\u5c0f\uff1a<\/strong>\u8907\u5408\u7d22\u5f15\u6703\u4f54\u7528\u66f4\u591a\u7684\u5b58\u5132\u7a7a\u9593\uff0c\u56e0\u6b64\u5728\u8a2d\u8a08\u7d22\u5f15\u6642\u9700\u8981\u8003\u616e\u5230\u9019\u4e00\u9ede\u3002<\/li>\n<li><strong>\u66f4\u65b0\u6027\u80fd\uff1a<\/strong>\u6bcf\u7576\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u6587\u6a94\u6642\uff0c\u7d22\u5f15\u4e5f\u9700\u8981\u66f4\u65b0\uff0c\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\u3002<\/li>\n<li><strong>\u7d22\u5f15\u9078\u64c7\uff1a<\/strong>\u5728\u5275\u5efa\u8907\u5408\u7d22\u5f15\u6642\uff0c\u5b57\u6bb5\u7684\u9806\u5e8f\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5be6\u969b\u67e5\u8a62\u9700\u6c42\u4f86\u9078\u64c7\u5b57\u6bb5\u7684\u9806\u5e8f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jukUIIuCxC\">\u7e3d\u7d50<\/h2>\n<p>\u8907\u5408\u7d22\u5f15\u5728MongoDB\u4e2d\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u591a\u5b57\u6bb5\u67e5\u8a62\u7684\u6027\u80fd\u3002\u901a\u904e\u5408\u7406\u5730\u8a2d\u8a08\u548c\u4f7f\u7528\u8907\u5408\u7d22\u5f15\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u512a\u5316\u6578\u64da\u5eab\u7684\u67e5\u8a62\u6548\u7387\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\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\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MongoDB\u4e2d\u7684\u8907\u5408\u7d22\u5f15\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u5b58\u53d6\uff0c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u6aa2\u7d22\u548c\u6027\u80fd\u589e\u5f37\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-63720","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63720","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=63720"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63720\/revisions"}],"predecessor-version":[{"id":63721,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63720\/revisions\/63721"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}