{"id":247405,"date":"2024-01-02T21:47:23","date_gmt":"2024-01-02T13:47:23","guid":{"rendered":"https:\/\/www.idc.net\/help\/247405\/"},"modified":"2024-01-02T21:47:23","modified_gmt":"2024-01-02T13:47:23","slug":"mongodb-%e6%9c%af%e8%af%ad-%e8%af%bb%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247405\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u8bfb\u64cd\u4f5c"},"content":{"rendered":"<p>  <title id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%af%bb%e6%93%8d%e4%bd%9c-ZxsLtBWdZH\">MongoDB \u672f\u8bed - \u8bfb\u64cd\u4f5c<\/title><\/p>\n<h1 id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%af%bb%e6%93%8d%e4%bd%9c-ZxsLtBWdZH\">MongoDB \u672f\u8bed - \u8bfb\u64cd\u4f5c<\/h1>\n<h2 id=\"%e6%a6%82%e8%bf%b0-ZxsLtBWdZH\">\u6982\u8ff0<\/h2>\n<p>MongoDB \u662f\u4e00\u79cd\u6d41\u884c\u7684 NoSQL \u6570\u636e\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\u548c\u7075\u6d3b\u7684\u6570\u636e\u6a21\u578b\u3002\u5728\u4f7f\u7528 MongoDB \u8fdb\u884c\u5f00\u53d1\u65f6\uff0c\u4e86\u89e3\u5176\u672f\u8bed\u548c\u64cd\u4f5c\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd MongoDB \u4e2d\u7684\u8bfb\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%af%a2%e6%96%87%e6%a1%a3-ZxsLtBWdZH\">\u67e5\u8be2\u6587\u6863<\/h2>\n<p>\u5728 MongoDB \u4e2d\uff0c\u8bfb\u64cd\u4f5c\u7684\u6838\u5fc3\u662f\u67e5\u8be2\u6587\u6863\u3002\u67e5\u8be2\u6587\u6863\u662f\u4f7f\u7528\u7279\u5b9a\u6761\u4ef6\u4ece\u96c6\u5408\u4e2d\u68c0\u7d22\u6570\u636e\u7684\u8fc7\u7a0b\u3002MongoDB \u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u67e5\u8be2\u8bed\u6cd5\u548c\u64cd\u4f5c\u7b26\uff0c\u4f7f\u5f97\u67e5\u8be2\u53d8\u5f97\u975e\u5e38\u7075\u6d3b\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%9f%a5%e8%af%a2-ZxsLtBWdZH\">\u57fa\u672c\u67e5\u8be2<\/h3>\n<p>\u57fa\u672c\u67e5\u8be2\u662f\u6700\u7b80\u5355\u7684\u67e5\u8be2\u7c7b\u578b\uff0c\u5b83\u4f7f\u7528\u952e\u503c\u5bf9\u6765\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u540d\u4e3a \"John\" \u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ name: \"John\" })<\/code><\/pre>\n<h3 id=\"%e6%af%94%e8%be%83%e6%93%8d%e4%bd%9c%e7%ac%a6-ZxsLtBWdZH\">\u6bd4\u8f83\u64cd\u4f5c\u7b26<\/h3>\n<p>\u6bd4\u8f83\u64cd\u4f5c\u7b26\u5141\u8bb8\u6211\u4eec\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u6bd4\u8f83\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u5e74\u9f84\u5927\u4e8e 18 \u5c81\u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ age: { $gt: 18 } })<\/code><\/pre>\n<h3 id=\"%e9%80%bb%e8%be%91%e6%93%8d%e4%bd%9c%e7%ac%a6-ZxsLtBWdZH\">\u903b\u8f91\u64cd\u4f5c\u7b26<\/h3>\n<p>\u903b\u8f91\u64cd\u4f5c\u7b26\u5141\u8bb8\u6211\u4eec\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u903b\u8f91\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4ee5 \"J\" \u5f00\u5934\u5e76\u4e14\u5e74\u9f84\u5927\u4e8e 18 \u5c81\u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ $and: [{ name: \/^J\/ }, { age: { $gt: 18 } }] })<\/code><\/pre>\n<h2 id=\"%e6%8a%95%e5%bd%b1-ZxsLtBWdZH\">\u6295\u5f71<\/h2>\n<p>\u6295\u5f71\u662f\u6307\u5728\u67e5\u8be2\u4e2d\u9009\u62e9\u8981\u8fd4\u56de\u7684\u5b57\u6bb5\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u67e5\u8be2\u5c06\u8fd4\u56de\u6240\u6709\u5b57\u6bb5\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6295\u5f71\u6765\u9650\u5236\u8fd4\u56de\u7684\u5b57\u6bb5\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u53ea\u8fd4\u56de\u7528\u6237\u7684\u540d\u5b57\u548c\u5e74\u9f84\uff1a<\/p>\n<pre><code>db.users.find({}, { name: 1, age: 1 })<\/code><\/pre>\n<h2 id=\"%e6%8e%92%e5%ba%8f-ZxsLtBWdZH\">\u6392\u5e8f<\/h2>\n<p>\u6392\u5e8f\u5141\u8bb8\u6211\u4eec\u6309\u7167\u6307\u5b9a\u7684\u5b57\u6bb5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u6309\u7167\u5e74\u9f84\u5b57\u6bb5\u5bf9\u7528\u6237\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\uff1a<\/p>\n<pre><code>db.users.find().sort({ age: 1 })<\/code><\/pre>\n<h2 id=\"%e9%99%90%e5%88%b6%e5%92%8c%e8%b7%b3%e8%bf%87-ZxsLtBWdZH\">\u9650\u5236\u548c\u8df3\u8fc7<\/h2>\n<p>\u9650\u5236\u548c\u8df3\u8fc7\u64cd\u4f5c\u5141\u8bb8\u6211\u4eec\u9650\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\u548c\u8df3\u8fc7\u4e00\u5b9a\u6570\u91cf\u7684\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u524d 10 \u4e2a\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find().limit(10)<\/code><\/pre>\n<h2 id=\"%e6%80%bb%e7%bb%93-ZxsLtBWdZH\">\u603b\u7ed3<\/h2>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e86 MongoDB \u4e2d\u7684\u8bfb\u64cd\u4f5c\uff0c\u5305\u62ec\u57fa\u672c\u67e5\u8be2\u3001\u6bd4\u8f83\u64cd\u4f5c\u7b26\u3001\u903b\u8f91\u64cd\u4f5c\u7b26\u3001\u6295\u5f71\u3001\u6392\u5e8f\u4ee5\u53ca\u9650\u5236\u548c\u8df3\u8fc7\u3002\u4e86\u89e3\u8fd9\u4e9b\u672f\u8bed\u548c\u64cd\u4f5c\u5c06\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u4f7f\u7528 MongoDB \u8fdb\u884c\u6570\u636e\u68c0\u7d22\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-ZxsLtBWdZH\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u540e\u6d6a\u4e91\u662f\u4e00\u5bb6\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u7684\u4e91\u8ba1\u7b97\u516c\u53f8\u3002\u4ed6\u4eec\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u573a\u666f\u3002\u5982\u679c\u60a8\u9700\u8981\u53ef\u9760\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002<\/p>\n<p>\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">\u540e\u6d6a\u4e91\u5b98\u7f51<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u8bfb\u64cd\u4f5c MongoDB \u672f\u8bed - \u8bfb\u64cd\u4f5c \u6982\u8ff0 MongoDB \u662f\u4e00\u79cd\u6d41\u884c\u7684 NoS [&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-247405","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247405","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=247405"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247405\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}