{"id":21590,"date":"2024-01-02T12:00:25","date_gmt":"2024-01-02T12:00:25","guid":{"rendered":"https:\/\/server.hk\/blog\/21590\/"},"modified":"2024-11-14T10:30:11","modified_gmt":"2024-11-14T02:30:11","slug":"mongodb-glossary-matcher","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21590\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 &#8211; \u5339\u914d\u5668"},"content":{"rendered":"<h1 id=\"mongodb-glossary-matcher-uUYJQHGKaK\">MongoDB \u8a5e\u5f59\u8868 &#8211; \u5339\u914d\u5668<\/h1>\n<p>\u5728 MongoDB \u4e2d\uff0c<strong>\u5339\u914d\u5668<\/strong>\u662f\u4e00\u7a2e\u67e5\u8a62\u904b\u7b97\u7b26\uff0c\u5141\u8a31\u60a8\u6307\u5b9a\u689d\u4ef6\u4ee5\u5f9e\u96c6\u5408\u4e2d\u9078\u64c7\u6587\u6a94\u3002\u5b83\u662f MongoDB \u67e5\u8a62\u8a9e\u8a00\u4e2d\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\uff0c\u80fd\u5920\u6839\u64da\u60a8\u7684\u6a19\u6e96\u904e\u6ffe\u548c\u6aa2\u7d22\u7279\u5b9a\u6578\u64da\u3002<\/p>\n<h2 id=\"understanding-matchers-uUYJQHGKaK\">\u7406\u89e3\u5339\u914d\u5668<\/h2>\n<p>\u5339\u914d\u5668\u7528\u65bc\u5404\u7a2e MongoDB \u64cd\u4f5c\uff0c\u4f8b\u5982 <code>find()<\/code>\u3001<code>update()<\/code> \u548c <code>delete()<\/code>\u3002\u5b83\u5011\u4f7f\u60a8\u80fd\u5920\u5b9a\u7fa9\u6587\u6a94\u5fc5\u9808\u6eff\u8db3\u7684\u689d\u4ef6\uff0c\u4ee5\u4fbf\u5305\u542b\u5728\u7d50\u679c\u96c6\u4e2d\u3002<\/p>\n<p>\u5339\u914d\u5668\u4f7f\u7528\u9748\u6d3b\u4e14\u5bcc\u6709\u8868\u9054\u529b\u7684\u8a9e\u6cd5\uff0c\u8b93\u60a8\u80fd\u5920\u6307\u5b9a\u8907\u96dc\u7684\u67e5\u8a62\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u908f\u8f2f\u904b\u7b97\u7b26\u5982 <code>$and<\/code>\u3001<code>$or<\/code> \u548c <code>$not<\/code> \u7d50\u5408\u591a\u500b\u689d\u4ef6\uff0c\u4ee5\u5275\u5efa\u5f37\u5927\u7684\u67e5\u8a62\u3002<\/p>\n<h2 id=\"matcher-operators-uUYJQHGKaK\">\u5339\u914d\u5668\u904b\u7b97\u7b26<\/h2>\n<p>MongoDB \u63d0\u4f9b\u4e86\u5404\u7a2e\u5339\u914d\u5668\u904b\u7b97\u7b26\uff0c\u4ee5\u57f7\u884c\u4e0d\u540c\u985e\u578b\u7684\u6bd4\u8f03\u548c\u64cd\u4f5c\u3002\u4e00\u4e9b\u5e38\u7528\u7684\u904b\u7b97\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>$eq<\/code>: \u5339\u914d\u7b49\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$ne<\/code>: \u5339\u914d\u4e0d\u7b49\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$gt<\/code>: \u5339\u914d\u5927\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$lt<\/code>: \u5339\u914d\u5c0f\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$gte<\/code>: \u5339\u914d\u5927\u65bc\u6216\u7b49\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$lte<\/code>: \u5339\u914d\u5c0f\u65bc\u6216\u7b49\u65bc\u6307\u5b9a\u503c\u7684\u503c\u3002<\/li>\n<li><code>$in<\/code>: \u5339\u914d\u6578\u7d44\u4e2d\u6307\u5b9a\u7684\u4efb\u610f\u503c\u3002<\/li>\n<li><code>$nin<\/code>: \u5339\u914d\u6578\u7d44\u4e2d\u4e0d\u5305\u542b\u7684\u503c\u3002<\/li>\n<li><code>$exists<\/code>: \u5339\u914d\u5305\u542b\u7279\u5b9a\u5b57\u6bb5\u7684\u6587\u6a94\u3002<\/li>\n<li><code>$regex<\/code>: \u6839\u64da\u6b63\u5247\u8868\u9054\u5f0f\u6a21\u5f0f\u5339\u914d\u6587\u6a94\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u904b\u7b97\u7b26\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u6578\u5b57\u3001\u6578\u7d44\u548c\u65e5\u671f\uff0c\u8b93\u60a8\u80fd\u5920\u57f7\u884c\u6e96\u78ba\u4e14\u9748\u6d3b\u7684\u67e5\u8a62\u3002<\/p>\n<h2 id=\"example-uUYJQHGKaK\">\u793a\u4f8b<\/h2>\n<p>\u8b93\u6211\u5011\u8003\u616e\u4e00\u500b\u5305\u542b\u66f8\u7c4d\u7684\u96c6\u5408\u7684\u793a\u4f8b\u3002\u8a72\u96c6\u5408\u4e2d\u7684\u6bcf\u500b\u6587\u6a94\u90fd\u6709 <code>title<\/code>\u3001<code>author<\/code> \u548c <code>price<\/code> \u7b49\u5b57\u6bb5\u3002\u6211\u5011\u5e0c\u671b\u627e\u5230\u6240\u6709\u50f9\u683c\u5927\u65bc 50 \u7f8e\u5143\u4e14\u7531\u7279\u5b9a\u4f5c\u8005\u64b0\u5beb\u7684\u66f8\u7c4d\u3002<\/p>\n<pre><code>db.books.find({\r\n  author: \"John Doe\",\r\n  price: { $gt: 50 }\r\n})\r\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>$gt<\/code> \u904b\u7b97\u7b26\u4f86\u5339\u914d\u50f9\u683c\u5927\u65bc 50 \u7684\u66f8\u7c4d\uff0c\u4e26\u4f7f\u7528 <code>author<\/code> \u5b57\u6bb5\u4f86\u5339\u914d\u7531 &#8220;John Doe&#8221; \u64b0\u5beb\u7684\u66f8\u7c4d\u3002\u7d50\u679c\u5c07\u986f\u793a\u7b26\u5408\u9019\u5169\u500b\u689d\u4ef6\u7684\u66f8\u7c4d\u5217\u8868\u3002<\/p>\n<h2 id=\"conclusion-uUYJQHGKaK\">\u7d50\u8ad6<\/h2>\n<p>\u5339\u914d\u5668\u662f MongoDB \u67e5\u8a62\u8a9e\u8a00\u7684\u57fa\u672c\u90e8\u5206\uff0c\u80fd\u5920\u8b93\u60a8\u5f9e\u96c6\u5408\u4e2d\u904e\u6ffe\u548c\u6aa2\u7d22\u7279\u5b9a\u6587\u6a94\u3002\u901a\u904e\u4f7f\u7528\u5404\u7a2e\u5339\u914d\u5668\u904b\u7b97\u7b26\uff0c\u60a8\u53ef\u4ee5\u5275\u5efa\u8907\u96dc\u7684\u67e5\u8a62\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u5177\u9ad4\u9700\u6c42\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc MongoDB \u53ca\u5176\u7279\u6027\u7684\u8cc7\u8a0a\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u9019\u662f\u4e00\u5bb6\u9818\u5148\u7684 VPS \u865b\u64ec\u4e3b\u6a5f\u516c\u53f8\uff0c\u63d0\u4f9b\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684\u4e3b\u6a5f\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u8a5e\u5f59\u8868 &#038;#82&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21590","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21590","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21590"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21590\/revisions"}],"predecessor-version":[{"id":23850,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21590\/revisions\/23850"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}