{"id":247413,"date":"2024-01-02T21:55:28","date_gmt":"2024-01-02T13:55:28","guid":{"rendered":"https:\/\/www.idc.net\/help\/247413\/"},"modified":"2024-01-02T21:55:28","modified_gmt":"2024-01-02T13:55:28","slug":"mongodb-%e6%9c%af%e8%af%ad-%e8%a1%a8%e8%be%be%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247413\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u8868\u8fbe\u5f0f"},"content":{"rendered":"<p><title id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%a1%a8%e8%be%be%e5%bc%8f-IRQFPIMJzp\">MongoDB \u672f\u8bed - \u8868\u8fbe\u5f0f<\/title><\/p>\n<h1 id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%a1%a8%e8%be%be%e5%bc%8f-IRQFPIMJzp\">MongoDB \u672f\u8bed - \u8868\u8fbe\u5f0f<\/h1>\n<p>\u5728MongoDB\u4e2d\uff0c\u8868\u8fbe\u5f0f\u662f\u7528\u4e8e\u67e5\u8be2\u548c\u64cd\u4f5c\u6570\u636e\u7684\u91cd\u8981\u5de5\u5177\u3002\u5b83\u4eec\u5141\u8bb8\u60a8\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26\u548c\u5176\u4ed6\u64cd\u4f5c\u7b26\u6765\u7b5b\u9009\u548c\u64cd\u4f5c\u6587\u6863\u3002<\/p>\n<h2 id=\"%e9%80%bb%e8%be%91%e8%bf%90%e7%ae%97%e7%ac%a6-IRQFPIMJzp\">\u903b\u8f91\u8fd0\u7b97\u7b26<\/h2>\n<p>\u903b\u8f91\u8fd0\u7b97\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u7ec4\u5408\u591a\u4e2a\u6761\u4ef6\u3002MongoDB\u652f\u6301\u4ee5\u4e0b\u903b\u8f91\u8fd0\u7b97\u7b26\uff1a<\/p>\n<ul>\n<li><strong>$and<\/strong> - \u903b\u8f91\u4e0e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u540c\u65f6\u6ee1\u8db3\u591a\u4e2a\u6761\u4ef6\u3002<\/li>\n<li><strong>$or<\/strong> - \u903b\u8f91\u6216\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u6ee1\u8db3\u591a\u4e2a\u6761\u4ef6\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u3002<\/li>\n<li><strong>$not<\/strong> - \u903b\u8f91\u975e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5426\u5b9a\u4e00\u4e2a\u6761\u4ef6\u3002<\/li>\n<li><strong>$nor<\/strong> - \u903b\u8f91\u6216\u975e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u6ee1\u8db3\u591a\u4e2a\u6761\u4ef6\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\uff0c\u5e76\u4e14\u6392\u9664\u6ee1\u8db3\u5176\u4ed6\u6761\u4ef6\u7684\u6587\u6863\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%af%94%e8%be%83%e8%bf%90%e7%ae%97%e7%ac%a6-IRQFPIMJzp\">\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/h2>\n<p>\u6bd4\u8f83\u8fd0\u7b97\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u6bd4\u8f83\u5b57\u6bb5\u7684\u503c\u3002MongoDB\u652f\u6301\u4ee5\u4e0b\u6bd4\u8f83\u8fd0\u7b97\u7b26\uff1a<\/p>\n<ul>\n<li><strong>$eq<\/strong> - \u7b49\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u6307\u5b9a\u503c\u3002<\/li>\n<li><strong>$ne<\/strong> - \u4e0d\u7b49\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u6392\u9664\u6307\u5b9a\u503c\u3002<\/li>\n<li><strong>$gt<\/strong> - \u5927\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u5927\u4e8e\u6307\u5b9a\u503c\u7684\u6587\u6863\u3002<\/li>\n<li><strong>$gte<\/strong> - \u5927\u4e8e\u7b49\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u5927\u4e8e\u7b49\u4e8e\u6307\u5b9a\u503c\u7684\u6587\u6863\u3002<\/li>\n<li><strong>$lt<\/strong> - \u5c0f\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u5c0f\u4e8e\u6307\u5b9a\u503c\u7684\u6587\u6863\u3002<\/li>\n<li><strong>$lte<\/strong> - \u5c0f\u4e8e\u7b49\u4e8e\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u5c0f\u4e8e\u7b49\u4e8e\u6307\u5b9a\u503c\u7684\u6587\u6863\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%85%b6%e4%bb%96%e6%93%8d%e4%bd%9c%e7%ac%a6-IRQFPIMJzp\">\u5176\u4ed6\u64cd\u4f5c\u7b26<\/h2>\n<p>\u9664\u4e86\u903b\u8f91\u8fd0\u7b97\u7b26\u548c\u6bd4\u8f83\u8fd0\u7b97\u7b26\uff0cMongoDB\u8fd8\u652f\u6301\u5176\u4ed6\u4e00\u4e9b\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><strong>$in<\/strong> - \u5305\u542b\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u6307\u5b9a\u503c\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u3002<\/li>\n<li><strong>$nin<\/strong> - \u4e0d\u5305\u542b\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u6392\u9664\u6307\u5b9a\u503c\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u3002<\/li>\n<li><strong>$exists<\/strong> - \u5b58\u5728\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u5305\u542b\u6307\u5b9a\u5b57\u6bb5\u7684\u6587\u6863\u3002<\/li>\n<li><strong>$type<\/strong> - \u7c7b\u578b\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u6307\u5b9a\u5b57\u6bb5\u7c7b\u578b\u7684\u6587\u6863\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b-IRQFPIMJzp\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528MongoDB\u8868\u8fbe\u5f0f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n\/\/ \u67e5\u8be2\u5e74\u9f84\u5927\u4e8e\u7b49\u4e8e18\u5c81\u7684\u7528\u6237\ndb.users.find({ age: { $gte: 18 } })\n\n\/\/ \u67e5\u8be2\u540d\u5b57\u4e3aJohn\u6216\u8005\u5e74\u9f84\u5c0f\u4e8e30\u5c81\u7684\u7528\u6237\ndb.users.find({ $or: [{ name: \"John\" }, { age: { $lt: 30 } }] })\n\n\/\/ \u67e5\u8be2\u4e0d\u5305\u542bemail\u5b57\u6bb5\u7684\u7528\u6237\ndb.users.find({ email: { $exists: false } })\n<\/code><\/pre>\n<p>\u901a\u8fc7\u4f7f\u7528\u9002\u5f53\u7684\u8868\u8fbe\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u67e5\u8be2\u548c\u64cd\u4f5cMongoDB\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-IRQFPIMJzp\">\u603b\u7ed3<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u8868\u8fbe\u5f0f\u662f\u7528\u4e8e\u67e5\u8be2\u548c\u64cd\u4f5c\u6570\u636e\u7684\u91cd\u8981\u5de5\u5177\u3002\u903b\u8f91\u8fd0\u7b97\u7b26\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26\u548c\u5176\u4ed6\u64cd\u4f5c\u7b26\u53ef\u4ee5\u5e2e\u52a9\u60a8\u7b5b\u9009\u548c\u64cd\u4f5c\u6587\u6863\u3002\u901a\u8fc7\u4f7f\u7528\u9002\u5f53\u7684\u8868\u8fbe\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u67e5\u8be2\u548c\u64cd\u4f5cMongoDB\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684MongoDB\u6258\u7ba1\u89e3\u51b3\u65b9\u6848\uff0c\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\u3002\u6211\u4eec\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u4ee5\u53ca\u5176\u4ed6\u5730\u533a\u7684\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\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>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u8868\u8fbe\u5f0f MongoDB \u672f\u8bed - \u8868\u8fbe\u5f0f \u5728MongoDB\u4e2d\uff0c\u8868\u8fbe\u5f0f\u662f\u7528\u4e8e\u67e5\u8be2\u548c\u64cd\u4f5c [&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-247413","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247413","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=247413"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247413\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}