{"id":247367,"date":"2024-01-02T21:09:19","date_gmt":"2024-01-02T13:09:19","guid":{"rendered":"https:\/\/www.idc.net\/help\/247367\/"},"modified":"2024-01-02T21:09:19","modified_gmt":"2024-01-02T13:09:19","slug":"mongodb-%e6%9c%af%e8%af%ad-%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247367\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u590d\u5408\u7d22\u5f15"},"content":{"rendered":"<p><title>MongoDB \u672f\u8bed - \u590d\u5408\u7d22\u5f15<\/title><\/p>\n<h1 id=\"%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95-UQZVppnxAY\">\u590d\u5408\u7d22\u5f15<\/h1>\n<p>\u5728MongoDB\u4e2d\uff0c\u590d\u5408\u7d22\u5f15\u662f\u4e00\u79cd\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u8fdb\u884c\u7d22\u5f15\u7684\u6280\u672f\u3002\u5b83\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u5e76\u4f18\u5316\u6570\u636e\u5e93\u7684\u8bfb\u53d6\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bd%bf%e7%94%a8%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95%ef%bc%9f-UQZVppnxAY\">\u4e3a\u4ec0\u4e48\u4f7f\u7528\u590d\u5408\u7d22\u5f15\uff1f<\/h2>\n<p>\u5f53\u6211\u4eec\u9700\u8981\u5728\u591a\u4e2a\u5b57\u6bb5\u4e0a\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u67e5\u8be2\u7684\u6548\u7387\u3002\u76f8\u6bd4\u4e8e\u5355\u4e2a\u5b57\u6bb5\u7684\u7d22\u5f15\uff0c\u590d\u5408\u7d22\u5f15\u53ef\u4ee5\u66f4\u597d\u5730\u6ee1\u8db3\u590d\u6742\u67e5\u8be2\u7684\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%88%9b%e5%bb%ba%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95%ef%bc%9f-UQZVppnxAY\">\u5982\u4f55\u521b\u5efa\u590d\u5408\u7d22\u5f15\uff1f<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528createIndex()\u65b9\u6cd5\u6765\u521b\u5efa\u590d\u5408\u7d22\u5f15\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.createIndex({ field1: 1, field2: -1 });\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u590d\u5408\u7d22\u5f15\uff0c\u5176\u4e2dfield1\u662f\u5347\u5e8f\u7d22\u5f15\uff0c\u800cfield2\u662f\u964d\u5e8f\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95%ef%bc%9f-UQZVppnxAY\">\u5982\u4f55\u4f7f\u7528\u590d\u5408\u7d22\u5f15\uff1f<\/h2>\n<p>\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u67e5\u8be2\u6761\u4ef6\u4e2d\u7684\u5b57\u6bb5\u987a\u5e8f\u4e0e\u521b\u5efa\u7d22\u5f15\u65f6\u7684\u5b57\u6bb5\u987a\u5e8f\u4e00\u81f4\u3002\u8fd9\u6837\u624d\u80fd\u5145\u5206\u5229\u7528\u590d\u5408\u7d22\u5f15\u7684\u4f18\u52bf\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.find({ field1: \"value1\", field2: \"value2\" });\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u590d\u5408\u7d22\u5f15\u6765\u67e5\u8be2field1\u7b49\u4e8e\"value1\"\u4e14field2\u7b49\u4e8e\"value2\"\u7684\u6587\u6863\u3002<\/p>\n<h2 id=\"%e5%a4%8d%e5%90%88%e7%b4%a2%e5%bc%95%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9-UQZVppnxAY\">\u590d\u5408\u7d22\u5f15\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u5728\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u590d\u5408\u7d22\u5f15\u7684\u5b57\u6bb5\u987a\u5e8f\u975e\u5e38\u91cd\u8981\uff0c\u9700\u8981\u6839\u636e\u67e5\u8be2\u7684\u9700\u6c42\u6765\u786e\u5b9a\u5b57\u6bb5\u7684\u987a\u5e8f\u3002<\/li>\n<li>\u590d\u5408\u7d22\u5f15\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5b57\u6bb5\uff0c\u4f46\u662f\u5b57\u6bb5\u7684\u6570\u91cf\u4e0d\u80fd\u592a\u591a\uff0c\u5426\u5219\u4f1a\u5f71\u54cd\u7d22\u5f15\u7684\u6027\u80fd\u3002<\/li>\n<li>\u590d\u5408\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u4f46\u662f\u4f1a\u589e\u52a0\u5199\u5165\u64cd\u4f5c\u7684\u5f00\u9500\u3002\u56e0\u6b64\uff0c\u5728\u521b\u5efa\u590d\u5408\u7d22\u5f15\u65f6\u9700\u8981\u6743\u8861\u8bfb\u5199\u64cd\u4f5c\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%bb%e7%bb%93-UQZVppnxAY\">\u603b\u7ed3<\/h2>\n<p>\u590d\u5408\u7d22\u5f15\u662fMongoDB\u4e2d\u4e00\u79cd\u91cd\u8981\u7684\u7d22\u5f15\u6280\u672f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u5e76\u4f18\u5316\u6570\u636e\u5e93\u7684\u8bfb\u53d6\u64cd\u4f5c\u3002\u901a\u8fc7\u5408\u7406\u5730\u521b\u5efa\u548c\u4f7f\u7528\u590d\u5408\u7d22\u5f15\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u6ee1\u8db3\u590d\u6742\u67e5\u8be2\u7684\u9700\u6c42\u3002<\/p>\n<h3 id=\"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a6%96%e9%80%89%e5%90%8e%e6%b5%aa%e4%ba%91-UQZVppnxAY\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u6211\u4eec\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u6ee1\u8db3\u60a8\u7684\u5404\u79cd\u9700\u6c42\u3002\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u7f51\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u590d\u5408\u7d22\u5f15 \u590d\u5408\u7d22\u5f15 \u5728MongoDB\u4e2d\uff0c\u590d\u5408\u7d22\u5f15\u662f\u4e00\u79cd\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u8fdb\u884c\u7d22\u5f15\u7684\u6280\u672f\u3002\u5b83 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7038],"tags":[],"class_list":["post-247367","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=247367"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247367\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}