{"id":21515,"date":"2024-01-02T10:40:24","date_gmt":"2024-01-02T10:40:24","guid":{"rendered":"https:\/\/server.hk\/blog\/21515\/"},"modified":"2024-11-14T10:31:29","modified_gmt":"2024-11-14T02:31:29","slug":"mongodb-glossary-pipeline","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21515\/","title":{"rendered":"MongoDB\u8a5e\u5f59\u8868 &#8211; \u7ba1\u9053"},"content":{"rendered":"<h1 id=\"mongodb-glossary-pipeline-rzXKnfZCLA\">MongoDB\u8a5e\u5f59\u8868 &#8211; \u7ba1\u9053<\/h1>\n<p>\u5728MongoDB\u7684\u4e16\u754c\u4e2d\uff0c\u300c\u7ba1\u9053\u300d\u9019\u4e00\u8853\u8a9e\u6307\u7684\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u4ee5\u9748\u6d3b\u548c\u9ad8\u6548\u7684\u65b9\u5f0f\u8655\u7406\u548c\u8f49\u63db\u6578\u64da\u3002\u7ba1\u9053\u6982\u5ff5\u662fMongoDB\u805a\u5408\u6846\u67b6\u7684\u6838\u5fc3\u90e8\u5206\uff0c\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u57f7\u884c\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\u548c\u5206\u6790\u3002<\/p>\n<h2 id=\"understanding-the-aggregation-framework-rzXKnfZCLA\">\u7406\u89e3\u805a\u5408\u6846\u67b6<\/h2>\n<p>MongoDB\u4e2d\u7684\u805a\u5408\u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u5957\u5de5\u5177\u548c\u64cd\u4f5c\u7b26\uff0c\u4f7f\u7528\u6236\u80fd\u5920\u57f7\u884c\u6578\u64da\u805a\u5408\u64cd\u4f5c\uff0c\u985e\u4f3c\u65bcSQL\u4e2d\u7684GROUP BY\u5b50\u53e5\u3002\u5b83\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u8655\u7406\u5927\u91cf\u6578\u64da\uff0c\u4e26\u901a\u904e\u5c0d\u6578\u64da\u96c6\u61c9\u7528\u4e00\u7cfb\u5217\u64cd\u4f5c\u4f86\u63d0\u53d6\u6709\u610f\u7fa9\u7684\u898b\u89e3\u3002<\/p>\n<p>\u805a\u5408\u6846\u67b6\u7684\u4e00\u500b\u95dc\u9375\u7d44\u4ef6\u662f\u7ba1\u9053\u3002\u7ba1\u9053\u662f\u4e00\u7cfb\u5217\u968e\u6bb5\uff0c\u6bcf\u500b\u968e\u6bb5\u4ee3\u8868\u5c0d\u6578\u64da\u61c9\u7528\u7684\u7279\u5b9a\u64cd\u4f5c\u3002\u4e00\u500b\u968e\u6bb5\u7684\u8f38\u51fa\u6210\u70ba\u4e0b\u4e00\u500b\u968e\u6bb5\u7684\u8f38\u5165\uff0c\u4f7f\u7528\u6236\u80fd\u5920\u69cb\u5efa\u8907\u96dc\u7684\u6578\u64da\u8655\u7406\u7ba1\u9053\u3002<\/p>\n<h2 id=\"stages-in-the-pipeline-rzXKnfZCLA\">\u7ba1\u9053\u4e2d\u7684\u968e\u6bb5<\/h2>\n<p>\u7ba1\u9053\u4e2d\u7684\u6bcf\u500b\u968e\u6bb5\u5c0d\u6578\u64da\u57f7\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\u3002\u5728MongoDB\u7684\u7ba1\u9053\u4e2d\uff0c\u4e00\u4e9b\u5e38\u7528\u7684\u968e\u6bb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>$match\uff1a<\/strong> \u6b64\u968e\u6bb5\u6839\u64da\u6307\u5b9a\u7684\u689d\u4ef6\u904e\u6ffe\u96c6\u5408\u4e2d\u7684\u6587\u6a94\uff0c\u4f7f\u7528\u6237\u80fd\u9078\u64c7\u50c5\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u6587\u6a94\u3002<\/li>\n<li><strong>$group\uff1a<\/strong> \u6b64\u968e\u6bb5\u6839\u64da\u6307\u5b9a\u7684\u9375\u5c0d\u6587\u6a94\u9032\u884c\u5206\u7d44\uff0c\u4e26\u5c0d\u5206\u7d44\u6578\u64da\u57f7\u884c\u805a\u5408\u64cd\u4f5c\u3002\u5b83\u4f7f\u7528\u6236\u80fd\u5920\u8a08\u7b97\u7e3d\u548c\u3001\u5e73\u5747\u503c\u3001\u8a08\u6578\u53ca\u5176\u4ed6\u805a\u5408\u503c\u3002<\/li>\n<li><strong>$project\uff1a<\/strong> \u6b64\u968e\u6bb5\u901a\u904e\u5305\u542b\u6216\u6392\u9664\u7279\u5b9a\u5b57\u6bb5\u4f86\u91cd\u5851\u96c6\u5408\u4e2d\u7684\u6587\u6a94\u3002\u5b83\u4f7f\u7528\u6236\u53ef\u4ee5\u5b9a\u7fa9\u8f38\u51fa\u6587\u6a94\u7684\u7d50\u69cb\u3002<\/li>\n<li><strong>$sort\uff1a<\/strong> \u6b64\u968e\u6bb5\u6839\u64da\u6307\u5b9a\u7684\u689d\u4ef6\u5c0d\u96c6\u5408\u4e2d\u7684\u6587\u6a94\u9032\u884c\u6392\u5e8f\u3002\u5b83\u4f7f\u7528\u6236\u80fd\u4ee5\u5347\u5e8f\u6216\u964d\u5e8f\u7684\u65b9\u5f0f\u6392\u5217\u8f38\u51fa\u6587\u6a94\u3002<\/li>\n<li><strong>$limit\uff1a<\/strong> \u6b64\u968e\u6bb5\u9650\u5236\u8f38\u51fa\u4e2d\u7684\u6587\u6a94\u6578\u91cf\u3002\u5b83\u4f7f\u7528\u6236\u50c5\u6aa2\u7d22\u6578\u64da\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u53ea\u662fMongoDB\u7ba1\u9053\u4e2d\u53ef\u7528\u968e\u6bb5\u7684\u4e00\u4e9b\u4f8b\u5b50\u3002\u7528\u6236\u53ef\u4ee5\u5728\u7ba1\u9053\u4e2d\u7d44\u5408\u591a\u500b\u968e\u6bb5\uff0c\u4ee5\u57f7\u884c\u8907\u96dc\u7684\u6578\u64da\u8f49\u63db\u548c\u5206\u6790\u3002<\/p>\n<h2 id=\"benefits-of-using-the-pipeline-rzXKnfZCLA\">\u4f7f\u7528\u7ba1\u9053\u7684\u597d\u8655<\/h2>\n<p>MongoDB\u4e2d\u7684\u7ba1\u9053\u529f\u80fd\u63d0\u4f9b\u4e86\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong> \u7ba1\u9053\u5141\u8a31\u7528\u6236\u901a\u904e\u7d44\u5408\u4e0d\u540c\u7684\u968e\u6bb5\u4f86\u5b9a\u7fa9\u81ea\u5b9a\u7fa9\u7684\u6578\u64da\u8655\u7406\u908f\u8f2f\u3002\u9019\u7a2e\u9748\u6d3b\u6027\u4f7f\u4f7f\u7528\u6236\u80fd\u5920\u57f7\u884c\u5404\u7a2e\u7bc4\u7587\u7684\u6578\u64da\u8f49\u63db\u548c\u5206\u6790\u3002<\/li>\n<li><strong>\u6548\u7387\uff1a<\/strong> \u7ba1\u9053\u4ee5\u9ad8\u5ea6\u512a\u5316\u7684\u65b9\u5f0f\u57f7\u884c\u64cd\u4f5c\uff0c\u5145\u5206\u5229\u7528MongoDB\u7684\u7d22\u5f15\u80fd\u529b\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u8655\u7406\u548c\u6027\u80fd\u63d0\u5347\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong> \u7ba1\u9053\u80fd\u5920\u6709\u6548\u8655\u7406\u5927\u91cf\u6578\u64da\uff0c\u4f7f\u5176\u9069\u7528\u65bc\u9700\u8981\u9ad8\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"conclusion-rzXKnfZCLA\">\u7d50\u8ad6<\/h2>\n<p>\u7ba1\u9053\u662fMongoDB\u805a\u5408\u6846\u67b6\u4e2d\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4f7f\u4f7f\u7528\u6236\u80fd\u4ee5\u9748\u6d3b\u548c\u9ad8\u6548\u7684\u65b9\u5f0f\u8655\u7406\u548c\u8f49\u63db\u6578\u64da\u3002\u901a\u904e\u5229\u7528\u7ba1\u9053\u7684\u529b\u91cf\uff0c\u7528\u6236\u80fd\u5920\u57f7\u884c\u8907\u96dc\u7684\u6578\u64da\u64cd\u63a7\u548c\u5206\u6790\uff0c\u5f9e\u4ed6\u5011\u7684MongoDB\u96c6\u5408\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u6d1e\u5bdf\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6709\u8208\u8da3\u63a2\u7d22MongoDB\u7684\u80fd\u529b\u4e26\u5229\u7528\u7ba1\u9053\u7684\u512a\u52e2\u6eff\u8db3\u60a8\u7684\u6578\u64da\u8655\u7406\u9700\u6c42\uff0c\u5efa\u8b70\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u63d0\u4f9b\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684VPS\u4e3b\u6a5f\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB\u8a5e\u5f59\u8868 &#038;#821&#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-21515","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21515","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=21515"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21515\/revisions"}],"predecessor-version":[{"id":23947,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21515\/revisions\/23947"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}