{"id":175777,"date":"2024-11-08T08:54:16","date_gmt":"2024-11-08T00:54:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175777\/"},"modified":"2024-11-08T08:54:17","modified_gmt":"2024-11-08T00:54:17","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mongodb%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-168-%e7%84%a1%e6%95%88%e7%9a%84%e7%ae%a1%e9%81%93%e6%93%8d%e4%bd%9c%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175777\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc &#8211; 168 &#8211; \u7121\u6548\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mongodb%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-168-%e7%84%a1%e6%95%88%e7%9a%84%e7%ae%a1%e9%81%93%e6%93%8d%e4%bd%9c%e7%ac%a6-FbVUeIJWqR\">\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc &#8211; 168 &#8211; \u7121\u6548\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26<\/h1>\n<p>\u5728\u4f7f\u7528MongoDB\u9032\u884c\u6578\u64da\u64cd\u4f5c\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc168\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u8868\u793a\u201c\u7121\u6548\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26\u201d\u3002\u9019\u500b\u554f\u984c\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u5931\u6557\uff0c\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u6b63\u5e38\u904b\u884c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc168%e7%9a%84%e5%8e%9f%e5%9b%a0-FbVUeIJWqR\">\u932f\u8aa4\u4ee3\u78bc168\u7684\u539f\u56e0<\/h2>\n<p>MongoDB\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26\u662f\u7528\u65bc\u805a\u5408\u64cd\u4f5c\u7684\u95dc\u9375\u7d44\u4ef6\u3002\u7576\u4f60\u5728\u805a\u5408\u7ba1\u9053\u4e2d\u4f7f\u7528\u4e0d\u6b63\u78ba\u7684\u64cd\u4f5c\u7b26\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa4\u4ee3\u78bc168\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u4e86\u4e0d\u652f\u6301\u7684\u64cd\u4f5c\u7b26\uff1a<\/strong>MongoDB\u652f\u6301\u591a\u7a2e\u805a\u5408\u64cd\u4f5c\u7b26\uff0c\u5982$match\u3001$group\u3001$sort\u7b49\u3002\u5982\u679c\u5728\u7ba1\u9053\u4e2d\u4f7f\u7528\u4e86\u4e0d\u652f\u6301\u7684\u64cd\u4f5c\u7b26\uff0c\u5247\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li><strong>\u64cd\u4f5c\u7b26\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5728\u7de8\u5beb\u805a\u5408\u67e5\u8a62\u6642\uff0c\u64cd\u4f5c\u7b26\u7684\u62fc\u5beb\u5fc5\u9808\u6b63\u78ba\u3002\u4efb\u4f55\u62fc\u5beb\u932f\u8aa4\u90fd\u6703\u5c0e\u81f4MongoDB\u7121\u6cd5\u8b58\u5225\u8a72\u64cd\u4f5c\u7b26\u3002<\/li>\n<li><strong>\u7ba1\u9053\u7d50\u69cb\u4e0d\u6b63\u78ba\uff1a<\/strong>\u805a\u5408\u7ba1\u9053\u7684\u7d50\u69cb\u5fc5\u9808\u7b26\u5408MongoDB\u7684\u8981\u6c42\u3002\u5982\u679c\u7ba1\u9053\u7684\u9806\u5e8f\u6216\u683c\u5f0f\u4e0d\u6b63\u78ba\uff0c\u5247\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc168-FbVUeIJWqR\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc168<\/h2>\n<p>\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc168\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%93%8d%e4%bd%9c%e7%ac%a6%e7%9a%84%e6%9c%89%e6%95%88%e6%80%a7-FbVUeIJWqR\">1. \u6aa2\u67e5\u64cd\u4f5c\u7b26\u7684\u6709\u6548\u6027<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u4f60\u5728\u805a\u5408\u7ba1\u9053\u4e2d\u4f7f\u7528\u7684\u6240\u6709\u64cd\u4f5c\u7b26\u3002\u78ba\u4fdd\u5b83\u5011\u90fd\u662fMongoDB\u652f\u6301\u7684\u64cd\u4f5c\u7b26\u3002\u4f60\u53ef\u4ee5\u53c3\u8003\u5b98\u65b9\u6587\u6a94\u4f86\u78ba\u8a8d\u64cd\u4f5c\u7b26\u7684\u6709\u6548\u6027\u3002<\/p>\n<pre><code>{\n    $group: {\n        _id: \"$field\",\n        total: { $sum: \"$amount\" }\n    }\n}<\/code><\/pre>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e6%93%8d%e4%bd%9c%e7%ac%a6%e7%9a%84%e6%8b%bc%e5%af%ab-FbVUeIJWqR\">2. \u78ba\u8a8d\u64cd\u4f5c\u7b26\u7684\u62fc\u5beb<\/h3>\n<p>\u4ed4\u7d30\u6aa2\u67e5\u6bcf\u500b\u64cd\u4f5c\u7b26\u7684\u62fc\u5beb\uff0c\u78ba\u4fdd\u6c92\u6709\u4efb\u4f55\u932f\u8aa4\u3002\u4f8b\u5982\uff0c$sum\u548c$group\u7684\u62fc\u5beb\u5fc5\u9808\u6b63\u78ba\uff0c\u5426\u5247MongoDB\u5c07\u7121\u6cd5\u8b58\u5225\u5b83\u5011\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e7%ae%a1%e9%81%93%e7%b5%90%e6%a7%8b-FbVUeIJWqR\">3. \u6aa2\u67e5\u7ba1\u9053\u7d50\u69cb<\/h3>\n<p>\u78ba\u4fdd\u805a\u5408\u7ba1\u9053\u7684\u7d50\u69cb\u6b63\u78ba\u3002\u6bcf\u500b\u64cd\u4f5c\u7b26\u90fd\u5fc5\u9808\u6309\u7167\u6b63\u78ba\u7684\u9806\u5e8f\u6392\u5217\uff0c\u4e26\u4e14\u5fc5\u9808\u6b63\u78ba\u5d4c\u5957\u3002\u4f8b\u5982\uff0c$match\u64cd\u4f5c\u7b26\u61c9\u8a72\u5728$group\u4e4b\u524d\uff0c\u56e0\u70ba\u5b83\u7528\u65bc\u904e\u6ffe\u6578\u64da\u3002<\/p>\n<pre><code>db.collection.aggregate([\n    { $match: { status: \"active\" } },\n    { $group: { _id: \"$category\", total: { $sum: \"$amount\" } } }\n])<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8mongodb%e7%9a%84%e9%8c%af%e8%aa%a4%e6%97%a5%e8%aa%8c-FbVUeIJWqR\">4. \u4f7f\u7528MongoDB\u7684\u932f\u8aa4\u65e5\u8a8c<\/h3>\n<p>\u5982\u679c\u4ee5\u4e0a\u6b65\u9a5f\u7121\u6cd5\u89e3\u6c7a\u554f\u984c\uff0c\u53ef\u4ee5\u67e5\u770bMongoDB\u7684\u932f\u8aa4\u65e5\u8a8c\u3002\u9019\u4e9b\u65e5\u8a8c\u901a\u5e38\u6703\u63d0\u4f9b\u66f4\u8a73\u7d30\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u5e6b\u52a9\u4f60\u5b9a\u4f4d\u554f\u984c\u6240\u5728\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-FbVUeIJWqR\">\u7d50\u8ad6<\/h2>\n<p>MongoDB\u932f\u8aa4\u4ee3\u78bc168\u901a\u5e38\u662f\u7531\u65bc\u7121\u6548\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u64cd\u4f5c\u7b26\u7684\u6709\u6548\u6027\u3001\u62fc\u5beb\u548c\u7ba1\u9053\u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u4e00\u932f\u8aa4\u3002\u4fdd\u6301\u5c0dMongoDB\u5b98\u65b9\u6587\u6a94\u7684\u53c3\u8003\uff0c\u80fd\u5920\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e9b\u64cd\u4f5c\u7b26\uff0c\u5f9e\u800c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u90e8\u7f72\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MongoDB\u932f\u8aa4\u4ee3\u78bc168\uff0c\u89e3\u6c7a\u7121\u6548\u7684\u7ba1\u9053\u64cd\u4f5c\u7b26\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\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-175777","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175777","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=175777"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175777\/revisions"}],"predecessor-version":[{"id":175778,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175777\/revisions\/175778"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175777"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175777"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}