{"id":78633,"date":"2026-02-27T22:31:43","date_gmt":"2026-02-27T14:31:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78633.html"},"modified":"2026-02-27T22:31:43","modified_gmt":"2026-02-27T14:31:43","slug":"%e8%81%9a%e5%90%88%e7%ae%a1%e9%81%93%e4%b8%8e%e5%a4%8d%e6%9d%82%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78633.html","title":{"rendered":"\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2"},"content":{"rendered":"<\/p>\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>MongoDB\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2&#xff1a;\u4ece\u57fa\u7840\u5230\u5b9e\u6218\u7684\u5b8c\u6574\u6307\u5357<\/li>\n<li>\n<ul>\n<li>1. \u5f15\u8a00<\/li>\n<li>2. \u805a\u5408\u7ba1\u9053\u57fa\u7840\u6982\u5ff5<\/li>\n<li>\n<ul>\n<li>2.1 \u4ec0\u4e48\u662f\u805a\u5408\u7ba1\u9053&#xff1f;<\/li>\n<li>2.2 \u805a\u5408\u8bed\u6cd5<\/li>\n<li>2.3 \u805a\u5408\u9636\u6bb5\u5206\u7c7b<\/li>\n<\/ul>\n<\/li>\n<li>3. \u6838\u5fc3\u805a\u5408\u9636\u6bb5\u8be6\u89e3<\/li>\n<li>\n<ul>\n<li>3.1 $match&#xff1a;\u6570\u636e\u8fc7\u6ee4<\/li>\n<li>3.2 $project&#xff1a;\u5b57\u6bb5\u6295\u5f71\u4e0e\u91cd\u5851<\/li>\n<li>3.3 $group&#xff1a;\u5206\u7ec4\u805a\u5408<\/li>\n<li>3.4 $unwind&#xff1a;\u5c55\u5f00\u6570\u7ec4<\/li>\n<li>3.5 $lookup&#xff1a;\u591a\u96c6\u5408\u5173\u8054\u67e5\u8be2<\/li>\n<li>3.6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>             s<\/p>\n<p>             o<\/p>\n<p>             r<\/p>\n<p>             t<\/p>\n<p>             \u3001<\/p>\n<p>            sort\u3001<\/p>\n<p>         <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">sor<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mord cjk_fallback\">\u3001<\/span><\/span><\/span><\/span><\/span>limit \u548c $skip&#xff1a;\u6392\u5e8f\u4e0e\u5206\u9875<\/li>\n<\/ul>\n<\/li>\n<li>4. \u590d\u6742\u67e5\u8be2\u5b9e\u6218\u6848\u4f8b<\/li>\n<li>\n<ul>\n<li>4.1 \u6570\u636e\u6a21\u578b<\/li>\n<li>4.2 \u6848\u4f8b1&#xff1a;\u7528\u6237\u6d88\u8d39\u5206\u6790<\/li>\n<li>4.3 \u6848\u4f8b2&#xff1a;\u5546\u54c1\u9500\u552e\u6392\u884c<\/li>\n<li>4.4 \u6848\u4f8b3&#xff1a;\u5ba2\u6237RFM\u5206\u6790<\/li>\n<li>4.5 \u8fd0\u884c\u5b8c\u6574\u793a\u4f8b<\/li>\n<\/ul>\n<\/li>\n<li>5. \u805a\u5408\u7ba1\u9053\u6027\u80fd\u4f18\u5316<\/li>\n<li>\n<ul>\n<li>5.1 \u4f18\u5316\u539f\u5219<\/li>\n<li>5.2 \u5177\u4f53\u4f18\u5316\u7b56\u7565<\/li>\n<li>\n<ul>\n<li>5.2.1 \u5c3d\u65e9\u4f7f\u7528 $match<\/li>\n<li>5.2.2 \u4f7f\u7528 $project \u51cf\u5c11\u6570\u636e\u91cf<\/li>\n<li>5.2.3 \u7d22\u5f15\u8bbe\u8ba1\u7b56\u7565<\/li>\n<li>5.2.4 \u5904\u7406\u5927\u6570\u636e\u96c6<\/li>\n<\/ul>\n<\/li>\n<li>5.3 \u5e38\u89c1\u6027\u80fd\u9677\u9631<\/li>\n<\/ul>\n<\/li>\n<li>6. \u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u300e\u5b9d\u85cf\u4ee3\u7801\u80f6\u56ca\u5f00\u5f20\u5566&#xff01;\u300f\u2014\u2014 \u6211\u7684 CodeCapsule \u6765\u54af&#xff01;\u2728\u5199\u4ee3\u7801\u4e0d\u518d\u5934\u75bc&#xff01;\u6211\u7684\u65b0\u7ad9\u70b9 CodeCapsule \u4e3b\u6253\u4e00\u4e2a \u201c\u767d\u83dc\u4ef7\u201d&#043;\u201c\u91cf\u8eab\u5b9a\u5236\u201d&#xff01;\u65e0\u8bba\u662f\u5361\u8116\u5b50\u7684\u6bd5\u8bbe\/\u8bfe\u8bbe\/\u6587\u732e\u590d\u73b0&#xff0c;\u9700\u8981\u7075\u5149\u4e00\u73b0\u7684\u7b97\u6cd5\u6539\u8fdb&#xff0c;\u8fd8\u662f\u60f3\u7ed9\u9879\u76ee\u52a0\u4e2a\u201c\u5916\u6302\u201d&#xff0c;\u8fd9\u91cc\u90fd\u6709\u4fbf\u5b9c\u53c8\u597d\u7528\u7684\u4ee3\u7801\u65b9\u6848\u7b49\u4f60\u53d1\u73b0&#xff01;\u4f4e\u6210\u672c&#xff0c;\u9ad8\u9002\u914d&#xff0c;\u52a9\u4f60\u8f7b\u677e\u901a\u5173&#xff01;\u901f\u6765\u56f4\u89c2 &#x1f449; CodeCapsule\u5b98\u7f51<\/p>\n<h2>MongoDB\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2&#xff1a;\u4ece\u57fa\u7840\u5230\u5b9e\u6218\u7684\u5b8c\u6574\u6307\u5357<\/h2>\n<h3>1. \u5f15\u8a00<\/h3>\n<p>\u5728\u4f20\u7edf\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d&#xff0c;\u6211\u4eec\u4e60\u60ef\u4f7f\u7528 GROUP BY\u3001JOIN \u7b49 SQL \u8bed\u53e5\u6765\u5b8c\u6210\u590d\u6742\u7684\u6570\u636e\u5206\u6790\u3002MongoDB \u4f5c\u4e3a\u6587\u6863\u578b\u6570\u636e\u5e93&#xff0c;\u63d0\u4f9b\u4e86\u66f4\u4e3a\u5f3a\u5927\u548c\u7075\u6d3b\u7684 \u805a\u5408\u6846\u67b6&#xff08;Aggregation Framework&#xff09;&#xff0c;\u5b83\u901a\u8fc7 \u7ba1\u9053&#xff08;Pipeline&#xff09; \u7684\u6982\u5ff5&#xff0c;\u8ba9\u4f60\u80fd\u591f\u50cf\u642d\u5efa\u79ef\u6728\u4e00\u6837&#xff0c;\u7ec4\u5408\u591a\u4e2a\u6570\u636e\u5904\u7406\u9636\u6bb5&#xff0c;\u5b8c\u6210\u4ece\u7b80\u5355\u8fc7\u6ee4\u5230\u591a\u8868\u5173\u8054\u3001\u6570\u636e\u91cd\u5851\u3001\u7edf\u8ba1\u5206\u6790\u7b49\u5404\u79cd\u590d\u6742\u67e5\u8be2\u3002<\/p>\n<p>\u7136\u800c&#xff0c;\u805a\u5408\u7ba1\u9053\u7684\u7075\u6d3b\u6027\u4e5f\u662f\u4e00\u628a\u53cc\u5203\u5251\u3002\u4e0d\u5408\u7406\u7684\u7ba1\u9053\u8bbe\u8ba1&#xff08;\u5982\u8fc7\u65e9\u5c55\u5f00\u6570\u7ec4\u3001\u7f3a\u5c11\u7d22\u5f15\u3001\u9636\u6bb5\u987a\u5e8f\u9519\u8bef&#xff09;\u53ef\u80fd\u5bfc\u81f4\u67e5\u8be2\u7f13\u6162\u751a\u81f3\u5185\u5b58\u6ea2\u51fa\u3002\u672c\u6587\u5c06\u7cfb\u7edf\u6027\u5730\u4ecb\u7ecd MongoDB \u805a\u5408\u7ba1\u9053\u7684\u6838\u5fc3\u6982\u5ff5\u4e0e\u5e38\u7528\u9636\u6bb5&#xff0c;\u5e76\u901a\u8fc7 Python &#043; PyMongo \u7684\u5b9e\u6218\u793a\u4f8b&#xff0c;\u5e2e\u52a9\u4f60\u638c\u63e1\u6784\u5efa\u9ad8\u6548\u590d\u6742\u67e5\u8be2\u7684\u80fd\u529b\u3002<\/p>\n<p>  #mermaid-svg-eAMn5DZrYPlnKiWR{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-eAMn5DZrYPlnKiWR .error-icon{fill:#552222;}#mermaid-svg-eAMn5DZrYPlnKiWR .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-eAMn5DZrYPlnKiWR .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-eAMn5DZrYPlnKiWR .marker{fill:#333333;stroke:#333333;}#mermaid-svg-eAMn5DZrYPlnKiWR .marker.cross{stroke:#333333;}#mermaid-svg-eAMn5DZrYPlnKiWR svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-eAMn5DZrYPlnKiWR p{margin:0;}#mermaid-svg-eAMn5DZrYPlnKiWR .label{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster-label text{fill:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster-label span{color:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster-label span p{background-color:transparent;}#mermaid-svg-eAMn5DZrYPlnKiWR .label text,#mermaid-svg-eAMn5DZrYPlnKiWR span{fill:#333;color:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR .node rect,#mermaid-svg-eAMn5DZrYPlnKiWR .node circle,#mermaid-svg-eAMn5DZrYPlnKiWR .node ellipse,#mermaid-svg-eAMn5DZrYPlnKiWR .node polygon,#mermaid-svg-eAMn5DZrYPlnKiWR .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-eAMn5DZrYPlnKiWR .rough-node .label text,#mermaid-svg-eAMn5DZrYPlnKiWR .node .label text,#mermaid-svg-eAMn5DZrYPlnKiWR .image-shape .label,#mermaid-svg-eAMn5DZrYPlnKiWR .icon-shape .label{text-anchor:middle;}#mermaid-svg-eAMn5DZrYPlnKiWR .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-eAMn5DZrYPlnKiWR .rough-node .label,#mermaid-svg-eAMn5DZrYPlnKiWR .node .label,#mermaid-svg-eAMn5DZrYPlnKiWR .image-shape .label,#mermaid-svg-eAMn5DZrYPlnKiWR .icon-shape .label{text-align:center;}#mermaid-svg-eAMn5DZrYPlnKiWR .node.clickable{cursor:pointer;}#mermaid-svg-eAMn5DZrYPlnKiWR .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-eAMn5DZrYPlnKiWR .arrowheadPath{fill:#333333;}#mermaid-svg-eAMn5DZrYPlnKiWR .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-eAMn5DZrYPlnKiWR .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-eAMn5DZrYPlnKiWR .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-eAMn5DZrYPlnKiWR .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-eAMn5DZrYPlnKiWR .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-eAMn5DZrYPlnKiWR .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster text{fill:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR .cluster span{color:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-eAMn5DZrYPlnKiWR .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-eAMn5DZrYPlnKiWR rect.text{fill:none;stroke-width:0;}#mermaid-svg-eAMn5DZrYPlnKiWR .icon-shape,#mermaid-svg-eAMn5DZrYPlnKiWR .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-eAMn5DZrYPlnKiWR .icon-shape p,#mermaid-svg-eAMn5DZrYPlnKiWR .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-eAMn5DZrYPlnKiWR .icon-shape rect,#mermaid-svg-eAMn5DZrYPlnKiWR .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-eAMn5DZrYPlnKiWR .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-eAMn5DZrYPlnKiWR .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-eAMn5DZrYPlnKiWR :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u96c6\u5408\u6587\u6863<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$match \u8fc7\u6ee4<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$group \u5206\u7ec4\u805a\u5408<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$sort \u6392\u5e8f<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$limit \u9650\u5236\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u6700\u7ec8\u7ed3\u679c<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$lookup \u5173\u8054\u67e5\u8be2<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$unwind \u5c55\u5f00\u6570\u7ec4<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$project \u91cd\u5851\u6587\u6863<\/p>\n<p><\/span><\/p>\n<h3>2. \u805a\u5408\u7ba1\u9053\u57fa\u7840\u6982\u5ff5<\/h3>\n<h4>2.1 \u4ec0\u4e48\u662f\u805a\u5408\u7ba1\u9053&#xff1f;<\/h4>\n<p>MongoDB \u7684\u805a\u5408\u6846\u67b6\u57fa\u4e8e\u6570\u636e\u5904\u7406\u7ba1\u9053\u7684\u6982\u5ff5\u3002\u6587\u6863\u4ece\u96c6\u5408\u4e2d\u8bfb\u53d6\u540e&#xff0c;\u4f9d\u6b21\u901a\u8fc7\u591a\u4e2a\u9636\u6bb5&#xff08;Stage&#xff09;&#xff0c;\u6bcf\u4e2a\u9636\u6bb5\u5bf9\u6587\u6863\u6267\u884c\u7279\u5b9a\u7684\u64cd\u4f5c&#xff08;\u5982\u8fc7\u6ee4\u3001\u5206\u7ec4\u3001\u8f6c\u6362&#xff09;&#xff0c;\u7136\u540e\u5c06\u5904\u7406\u540e\u7684\u6587\u6863\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u9636\u6bb5\u3002\u6700\u7ec8&#xff0c;\u7ba1\u9053\u8f93\u51fa\u5904\u7406\u7ed3\u679c\u3002<\/p>\n<p>\u8fd9\u79cd\u67b6\u6784\u7684\u4f18\u52bf\u5728\u4e8e&#xff1a;<\/p>\n<ul>\n<li>\u5206\u9636\u6bb5\u5904\u7406&#xff1a;\u53ef\u4ee5\u5c06\u590d\u6742\u67e5\u8be2\u62c6\u89e3\u4e3a\u591a\u4e2a\u7b80\u5355\u6b65\u9aa4&#xff0c;\u4fbf\u4e8e\u7406\u89e3\u548c\u8c03\u8bd5<\/li>\n<li>\u5185\u5b58\u4f18\u5316&#xff1a;\u6570\u636e\u6d41\u5f0f\u5904\u7406&#xff0c;\u65e0\u9700\u5c06\u6240\u6709\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58<\/li>\n<li>\u539f\u751f\u64cd\u4f5c&#xff1a;\u76f4\u63a5\u5728\u6570\u636e\u5e93\u7aef\u5b8c\u6210\u8ba1\u7b97&#xff0c;\u51cf\u5c11\u6570\u636e\u4f20\u8f93<\/li>\n<\/ul>\n<h4>2.2 \u805a\u5408\u8bed\u6cd5<\/h4>\n<p>\u805a\u5408\u67e5\u8be2\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b&#xff1a;<\/p>\n<p>db<span class=\"token punctuation\">.<\/span>collection<span class=\"token punctuation\">.<\/span><span class=\"token function\">aggregate<\/span><span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">,<\/span> options<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>pipeline&#xff1a;\u4e00\u4e2a\u6570\u7ec4&#xff0c;\u5305\u542b\u591a\u4e2a\u805a\u5408\u9636\u6bb5<\/li>\n<li>options&#xff1a;\u53ef\u9009\u53c2\u6570&#xff0c;\u5982 allowDiskUse&#xff08;\u5141\u8bb8\u4f7f\u7528\u78c1\u76d8\u5904\u7406\u5927\u6570\u636e&#xff09;<\/li>\n<\/ul>\n<p>\u5728 Python \u4e2d\u4f7f\u7528 PyMongo \u6267\u884c\u805a\u5408\u67e5\u8be2&#xff1a;<\/p>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;active&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$group&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$category&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><br \/>\nresults <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>collection<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">for<\/span> doc <span class=\"token keyword\">in<\/span> results<span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>doc<span class=\"token punctuation\">)<\/span><\/p>\n<h4>2.3 \u805a\u5408\u9636\u6bb5\u5206\u7c7b<\/h4>\n<p>\u805a\u5408\u9636\u6bb5\u6309\u529f\u80fd\u53ef\u5206\u4e3a\u4ee5\u4e0b\u56db\u7c7b&#xff1a;<\/p>\n<table>\n<tr>\u7c7b\u522b\u4f5c\u7528\u5e38\u7528\u9636\u6bb5<\/tr>\n<tbody>\n<tr>\n<td>\u8fc7\u6ee4<\/td>\n<td>\u7b5b\u9009\u7b26\u5408\u6761\u4ef6\u7684\u6587\u6863<\/td>\n<td>$match<\/td>\n<\/tr>\n<tr>\n<td>\u91cd\u5851<\/td>\n<td>\u6539\u53d8\u6587\u6863\u7ed3\u6784&#xff0c;\u6dfb\u52a0\/\u5220\u9664\u5b57\u6bb5<\/td>\n<td>$project\u3001$addFields\u3001$unwind<\/td>\n<\/tr>\n<tr>\n<td>\u5206\u7ec4<\/td>\n<td>\u5bf9\u6587\u6863\u8fdb\u884c\u5206\u7ec4\u548c\u7edf\u8ba1<\/td>\n<td>$group<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u8054<\/td>\n<td>\u8fde\u63a5\u591a\u4e2a\u96c6\u5408<\/td>\n<td>$lookup<\/td>\n<\/tr>\n<tr>\n<td>\u6392\u5e8f\/\u5206\u9875<\/td>\n<td>\u63a7\u5236\u8f93\u51fa\u987a\u5e8f\u548c\u6570\u91cf<\/td>\n<td>$sort\u3001$limit\u3001$skip<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>3. \u6838\u5fc3\u805a\u5408\u9636\u6bb5\u8be6\u89e3<\/h3>\n<h4>3.1 $match&#xff1a;\u6570\u636e\u8fc7\u6ee4<\/h4>\n<p>$match \u9636\u6bb5\u7528\u4e8e\u7b5b\u9009\u6587\u6863&#xff0c;\u53ea\u4fdd\u7559\u7b26\u5408\u6761\u4ef6\u7684\u6587\u6863\u7ee7\u7eed\u5904\u7406\u3002\u5b83\u5e94\u8be5\u5c3d\u53ef\u80fd\u653e\u5728\u7ba1\u9053\u7684\u6700\u524d\u9762&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u540e\u7eed\u9636\u6bb5\u9700\u8981\u5904\u7406\u7684\u6570\u636e\u91cf&#xff0c;\u663e\u8457\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> pymongo<br \/>\n<span class=\"token keyword\">from<\/span> pymongo <span class=\"token keyword\">import<\/span> MongoClient<\/p>\n<p><span class=\"token comment\"># \u8fde\u63a5\u6570\u636e\u5e93<\/span><br \/>\nclient <span class=\"token operator\">&#061;<\/span> MongoClient<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;mongodb:\/\/localhost:27017\/&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\ndb <span class=\"token operator\">&#061;<\/span> client<span class=\"token punctuation\">.<\/span>shop<\/p>\n<p><span class=\"token comment\"># \u67e5\u627e\u6240\u6709\u72b6\u6001\u4e3a&#034;completed&#034;\u4e14\u91d1\u989d\u5927\u4e8e100\u7684\u8ba2\u5355<\/span><br \/>\npipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gt&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>results <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">for<\/span> order <span class=\"token keyword\">in<\/span> results<span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>order<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6027\u80fd\u63d0\u793a&#xff1a;$match \u4e2d\u4f7f\u7528\u7684\u5b57\u6bb5\u5e94\u521b\u5efa\u7d22\u5f15&#xff0c;\u7279\u522b\u662f\u5f53\u5b83\u4f5c\u4e3a\u7ba1\u9053\u7684\u7b2c\u4e00\u9636\u6bb5\u65f6\u3002<\/p>\n<h4>3.2 $project&#xff1a;\u5b57\u6bb5\u6295\u5f71\u4e0e\u91cd\u5851<\/h4>\n<p>$project \u9636\u6bb5\u7528\u4e8e\u63a7\u5236\u8f93\u51fa\u6587\u6863\u4e2d\u5305\u542b\u54ea\u4e9b\u5b57\u6bb5&#xff0c;\u4ee5\u53ca\u521b\u5efa\u65b0\u7684\u8ba1\u7b97\u5b57\u6bb5\u3002\u5b83\u53ef\u4ee5&#xff1a;<\/p>\n<ul>\n<li>\u5305\u542b\/\u6392\u9664\u5b57\u6bb5&#xff08;1\u8868\u793a\u5305\u542b&#xff0c;0\u8868\u793a\u6392\u9664&#xff09;<\/li>\n<li>\u91cd\u547d\u540d\u5b57\u6bb5<\/li>\n<li>\u4f7f\u7528\u8868\u8fbe\u5f0f\u521b\u5efa\u65b0\u5b57\u6bb5<\/li>\n<\/ul>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u6392\u9664 _id<\/span><br \/>\n            <span class=\"token string\">&#034;order_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$order_no&#034;<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u91cd\u547d\u540d\u5b57\u6bb5<\/span><br \/>\n            <span class=\"token string\">&#034;customer_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u4fdd\u7559\u539f\u5b57\u6bb5<\/span><br \/>\n            <span class=\"token string\">&#034;final_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;$multiply&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0.9<\/span><span class=\"token punctuation\">]<\/span>  <span class=\"token comment\"># \u8ba1\u7b97\u6253\u6298\u540e\u7684\u91d1\u989d<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;order_year&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$year&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$created_at&#034;<\/span><span class=\"token punctuation\">}<\/span>  <span class=\"token comment\"># \u63d0\u53d6\u5e74\u4efd<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>results <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5728\u7ba1\u9053\u7684\u65e9\u671f\u4f7f\u7528 $project \u53ef\u4ee5\u51cf\u5c11\u540e\u7eed\u9636\u6bb5\u9700\u8981\u5904\u7406\u7684\u6570\u636e\u91cf&#xff0c;\u662f\u4e00\u79cd\u91cd\u8981\u7684\u4f18\u5316\u624b\u6bb5\u3002<\/p>\n<h4>3.3 $group&#xff1a;\u5206\u7ec4\u805a\u5408<\/h4>\n<p>$group \u9636\u6bb5\u662f\u805a\u5408\u7ba1\u9053\u7684\u6838\u5fc3&#xff0c;\u5b83\u6839\u636e\u6307\u5b9a\u7684\u952e\u5bf9\u6587\u6863\u8fdb\u884c\u5206\u7ec4&#xff0c;\u5e76\u5bf9\u6bcf\u4e2a\u7ec4\u6267\u884c\u805a\u5408\u8ba1\u7b97\u3002<\/p>\n<p>\u5e38\u7528\u805a\u5408\u64cd\u4f5c\u7b26&#xff1a;<\/p>\n<table>\n<tr>\u64cd\u4f5c\u7b26\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>$sum<\/td>\n<td>\u6c42\u548c<\/td>\n<\/tr>\n<tr>\n<td>$avg<\/td>\n<td>\u5e73\u5747\u503c<\/td>\n<\/tr>\n<tr>\n<td>$min<\/td>\n<td>\u6700\u5c0f\u503c<\/td>\n<\/tr>\n<tr>\n<td>$max<\/td>\n<td>\u6700\u5927\u503c<\/td>\n<\/tr>\n<tr>\n<td>$first<\/td>\n<td>\u5206\u7ec4\u5185\u7b2c\u4e00\u4e2a\u6587\u6863\u7684\u503c<\/td>\n<\/tr>\n<tr>\n<td>$last<\/td>\n<td>\u5206\u7ec4\u5185\u6700\u540e\u4e00\u4e2a\u6587\u6863\u7684\u503c<\/td>\n<\/tr>\n<tr>\n<td>$push<\/td>\n<td>\u5c06\u503c\u6dfb\u52a0\u5230\u6570\u7ec4<\/td>\n<\/tr>\n<tr>\n<td>$addToSet<\/td>\n<td>\u5c06\u503c\u6dfb\u52a0\u5230\u6570\u7ec4&#xff08;\u53bb\u91cd&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;\u6309\u6708\u4efd\u7edf\u8ba1\u8ba2\u5355\u91d1\u989d&#xff1a;<\/p>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$group&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;year&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$year&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$created_at&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;month&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$month&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$created_at&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;total_orders&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;total_revenue&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;avg_order_value&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$avg&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;max_order&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$max&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;order_ids&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$push&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$order_no&#034;<\/span><span class=\"token punctuation\">}<\/span>  <span class=\"token comment\"># \u6536\u96c6\u6240\u6709\u8ba2\u5355\u53f7<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$sort&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;_id.year&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;_id.month&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>stats <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><\/p>\n<h4>3.4 $unwind&#xff1a;\u5c55\u5f00\u6570\u7ec4<\/h4>\n<p>\u5f53\u6587\u6863\u4e2d\u5305\u542b\u6570\u7ec4\u5b57\u6bb5\u65f6&#xff0c;$unwind \u53ef\u4ee5\u5c06\u6570\u7ec4\u62c6\u5206\u4e3a\u591a\u4e2a\u6587\u6863&#xff0c;\u6bcf\u4e2a\u6587\u6863\u5bf9\u5e94\u6570\u7ec4\u4e2d\u7684\u4e00\u4e2a\u5143\u7d20\u3002\u8fd9\u5728\u5904\u7406\u5d4c\u5957\u6570\u636e\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p><span class=\"token comment\"># \u793a\u4f8b\u6587\u6863&#xff1a;\u8ba2\u5355\u5305\u542b\u591a\u4e2a\u5546\u54c1\u9879<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;order_no&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;ORD001&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;items&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;product&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u9f20\u6807&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">99<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;qty&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;product&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u952e\u76d8&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">199<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;qty&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\"># \u5c55\u5f00\u5546\u54c1\u6570\u7ec4&#xff0c;\u6bcf\u4e2a\u5546\u54c1\u751f\u6210\u4e00\u4e2a\u6587\u6863<\/span><br \/>\npipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;order_no&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;product&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items.product&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;subtotal&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$multiply&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$items.price&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$items.qty&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>results <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># \u8f93\u51fa\u4e24\u4e2a\u6587\u6863&#xff1a;\u4e00\u4e2a\u5bf9\u5e94\u9f20\u6807&#xff0c;\u4e00\u4e2a\u5bf9\u5e94\u952e\u76d8<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;$unwind \u4f1a\u589e\u52a0\u6587\u6863\u6570\u91cf&#xff0c;\u56e0\u6b64\u5e94\u5c3d\u53ef\u80fd\u5728\u5c55\u5f00\u524d\u901a\u8fc7 $match \u51cf\u5c11\u6570\u636e\u91cf\u3002<\/p>\n<h4>3.5 $lookup&#xff1a;\u591a\u96c6\u5408\u5173\u8054\u67e5\u8be2<\/h4>\n<p>$lookup \u9636\u6bb5\u5141\u8bb8\u5728\u540c\u4e00\u4e2a\u6570\u636e\u5e93\u4e2d\u6267\u884c\u5de6\u5916\u8fde\u63a5\u64cd\u4f5c&#xff0c;\u7c7b\u4f3c\u4e8e SQL \u4e2d\u7684 LEFT JOIN\u3002\u8fd9\u5bf9\u4e8e\u5f15\u7528\u5f0f\u6570\u636e\u6a21\u578b\u7279\u522b\u6709\u7528\u3002<\/p>\n<p>\u57fa\u672c\u8bed\u6cd5&#xff1a;<\/p>\n<p><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token literal-property property\">$lookup<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token literal-property property\">from<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u5173\u8054\u96c6\u5408\u540d\u79f0&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">localField<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u5f53\u524d\u96c6\u5408\u4e2d\u7684\u5b57\u6bb5&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">foreignField<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u5173\u8054\u96c6\u5408\u4e2d\u7684\u5b57\u6bb5&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token keyword\">as<\/span><span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;\u8f93\u51fa\u6570\u7ec4\u5b57\u6bb5\u540d&#034;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u793a\u4f8b&#xff1a;\u8ba2\u5355\u5173\u8054\u7528\u6237\u4fe1\u606f&#xff1a;<\/p>\n<p>\u5047\u8bbe\u6709\u4e24\u4e2a\u96c6\u5408&#xff1a;<\/p>\n<ul>\n<li>orders&#xff1a;\u5305\u542b user_id \u5b57\u6bb5<\/li>\n<li>users&#xff1a;\u5305\u542b\u7528\u6237\u8be6\u7ec6\u4fe1\u606f<\/li>\n<\/ul>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$lookup&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;from&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;users&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;localField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;foreignField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;as&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user_info&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user_info&#034;<\/span>  <span class=\"token comment\"># \u5c06\u6570\u7ec4\u5c55\u5f00\u4e3a\u5bf9\u8c61<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;order_no&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;user_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user_info.name&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;user_email&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user_info.email&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>orders_with_user <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u9ad8\u7ea7\u7528\u6cd5&#xff1a;\u4ece MongoDB 3.6 \u5f00\u59cb&#xff0c;$lookup \u652f\u6301\u4f7f\u7528\u7ba1\u9053\u8fdb\u884c\u66f4\u590d\u6742\u7684\u5173\u8054\u6761\u4ef6&#xff1a;<\/p>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;$lookup&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;from&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;transactions&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;let&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;user_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;user_tier&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$tier&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;pipeline&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;$expr&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                            <span class=\"token string\">&#034;$and&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                                <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$eq&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$user_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$$user_id&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                                <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$amount&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                                <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$eq&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$tier&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$$user_tier&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                            <span class=\"token punctuation\">]<\/span><br \/>\n                        <span class=\"token punctuation\">}<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$limit&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;as&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;recent_transactions&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u8fd9\u79cd\u5f62\u5f0f\u7684 $lookup \u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027&#xff0c;\u53ef\u4ee5\u5728\u5173\u8054\u96c6\u5408\u4e0a\u6267\u884c\u989d\u5916\u7684\u8fc7\u6ee4\u3001\u6392\u5e8f\u548c\u9650\u5236\u64cd\u4f5c\u3002<\/p>\n<h4>3.6 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        s<\/p>\n<p>        o<\/p>\n<p>        r<\/p>\n<p>        t<\/p>\n<p>        \u3001<\/p>\n<p>       sort\u3001<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">sor<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mord cjk_fallback\">\u3001<\/span><\/span><\/span><\/span><\/span>limit \u548c $skip&#xff1a;\u6392\u5e8f\u4e0e\u5206\u9875<\/h4>\n<p>\u8fd9\u4e9b\u9636\u6bb5\u7528\u4e8e\u63a7\u5236\u8f93\u51fa\u7ed3\u679c\u7684\u987a\u5e8f\u548c\u6570\u91cf\u3002<\/p>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sort&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u6309\u91d1\u989d\u964d\u5e8f<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$skip&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u8df3\u8fc7\u524d20\u6761<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$limit&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">}<\/span>  <span class=\"token comment\"># \u8fd4\u56de10\u6761<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p><span class=\"token comment\"># \u76f8\u5f53\u4e8e&#xff1a;\u7b2c21-30\u6761\u8bb0\u5f55<\/span><\/p>\n<p>\u4f18\u5316\u63d0\u793a&#xff1a;\u5982\u679c\u9700\u8981\u5728\u6392\u5e8f\u540e\u5206\u9875&#xff0c;\u5c3d\u91cf\u5728 $match \u4e4b\u540e\u3001$group \u7b49\u91cd\u91cf\u7ea7\u64cd\u4f5c\u4e4b\u524d\u8fdb\u884c $sort&#xff0c;\u4ee5\u51cf\u5c11\u6392\u5e8f\u7684\u6570\u636e\u91cf\u3002\u540c\u65f6&#xff0c;\u4e3a\u6392\u5e8f\u5b57\u6bb5\u521b\u5efa\u7d22\u5f15\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<h3>4. \u590d\u6742\u67e5\u8be2\u5b9e\u6218\u6848\u4f8b<\/h3>\n<p>\u672c\u8282\u901a\u8fc7\u4e00\u4e2a\u7535\u5546\u6570\u636e\u5206\u6790\u7684\u573a\u666f&#xff0c;\u5c55\u793a\u5982\u4f55\u7ec4\u5408\u591a\u4e2a\u805a\u5408\u9636\u6bb5\u89e3\u51b3\u5b9e\u9645\u95ee\u9898\u3002<\/p>\n<h4>4.1 \u6570\u636e\u6a21\u578b<\/h4>\n<p>\u5047\u8bbe\u6709\u4ee5\u4e0b\u4e09\u4e2a\u96c6\u5408&#xff1a;<\/p>\n<p><span class=\"token comment\"># users \u96c6\u5408 &#8211; \u7528\u6237\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;email&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;zhangsan&#064;example.com&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;tier&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;gold&#034;<\/span><span class=\"token punctuation\">,<\/span>  <span class=\"token comment\"># \u4f1a\u5458\u7b49\u7ea7<\/span><br \/>\n    <span class=\"token string\">&#034;registered_at&#034;<\/span><span class=\"token punctuation\">:<\/span> ISODate<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;2023-01-15T08:30:00Z&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\"># orders \u96c6\u5408 &#8211; \u8ba2\u5355\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;order_no&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;ORD2024001&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;user_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1299.99<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;created_at&#034;<\/span><span class=\"token punctuation\">:<\/span> ISODate<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;2024-03-10T14:20:00Z&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;items&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;product_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u667a\u80fd\u624b\u673a&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">999.99<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;qty&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;product_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u624b\u673a\u58f3&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">29.99<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;qty&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\"># products \u96c6\u5408 &#8211; \u5546\u54c1\u4fe1\u606f<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> ObjectId<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u667a\u80fd\u624b\u673a&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;category&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u7535\u5b50\u4ea7\u54c1&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">999.99<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token string\">&#034;stock&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">50<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.2 \u6848\u4f8b1&#xff1a;\u7528\u6237\u6d88\u8d39\u5206\u6790<\/h4>\n<p>\u9700\u6c42&#xff1a;\u7edf\u8ba1\u6bcf\u4e2a\u4f1a\u5458\u7b49\u7ea7\u7684\u7528\u6237\u6570\u91cf\u3001\u5e73\u5747\u6d88\u8d39\u91d1\u989d\u548c\u603b\u6d88\u8d39\u91d1\u989d\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> pymongo<br \/>\n<span class=\"token keyword\">from<\/span> pymongo <span class=\"token keyword\">import<\/span> MongoClient<br \/>\n<span class=\"token keyword\">from<\/span> datetime <span class=\"token keyword\">import<\/span> datetime<span class=\"token punctuation\">,<\/span> timedelta<\/p>\n<p>client <span class=\"token operator\">&#061;<\/span> MongoClient<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;mongodb:\/\/localhost:27017\/&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\ndb <span class=\"token operator\">&#061;<\/span> client<span class=\"token punctuation\">.<\/span>ecommerce<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">analyze_user_spending<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5206\u6790\u4e0d\u540c\u4f1a\u5458\u7b49\u7ea7\u7684\u6d88\u8d39\u60c5\u51b5&#034;&#034;&#034;<\/span><br \/>\n    pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token comment\"># 1. \u53ea\u5173\u8054\u5df2\u5b8c\u6210\u7684\u8ba2\u5355<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 2. \u5173\u8054\u7528\u6237\u4fe1\u606f&#xff0c;\u83b7\u53d6\u4f1a\u5458\u7b49\u7ea7<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$lookup&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;from&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;users&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;localField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;foreignField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;as&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 3. \u5c55\u5f00\u7528\u6237\u6570\u7ec4<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 4. \u6309\u4f1a\u5458\u7b49\u7ea7\u5206\u7ec4\u7edf\u8ba1<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$group&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user.tier&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;user_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_spent&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;avg_spent&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$avg&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;max_order&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$max&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;min_order&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$min&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 5. \u6309\u603b\u6d88\u8d39\u91d1\u989d\u6392\u5e8f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$sort&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;total_spent&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>    results <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061; \u4f1a\u5458\u6d88\u8d39\u5206\u6790 &#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> r <span class=\"token keyword\">in<\/span> results<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u7b49\u7ea7: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;_id&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  \u7528\u6237\u6570: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;user_count&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  \u603b\u6d88\u8d39: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;total_spent&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  \u5e73\u5747\u6d88\u8d39: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;avg_spent&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  \u6700\u9ad8\u5355\u7b14: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;max_order&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> results<\/p>\n<h4>4.3 \u6848\u4f8b2&#xff1a;\u5546\u54c1\u9500\u552e\u6392\u884c<\/h4>\n<p>\u9700\u6c42&#xff1a;\u7edf\u8ba1\u6700\u8fd130\u5929\u9500\u91cf\u6700\u9ad8\u7684\u5546\u54c1&#xff0c;\u5305\u62ec\u9500\u552e\u6570\u91cf\u548c\u9500\u552e\u989d\u3002<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">get_top_products<\/span><span class=\"token punctuation\">(<\/span>days<span class=\"token operator\">&#061;<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> limit<span class=\"token operator\">&#061;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u83b7\u53d6\u70ed\u9500\u5546\u54c1\u6392\u884c&#034;&#034;&#034;<\/span><\/p>\n<p>    cutoff_date <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> timedelta<span class=\"token punctuation\">(<\/span>days<span class=\"token operator\">&#061;<\/span>days<span class=\"token punctuation\">)<\/span><\/p>\n<p>    pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token comment\"># 1. \u53ea\u7edf\u8ba1\u6700\u8fd1\u5b8c\u6210\u7684\u8ba2\u5355<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;created_at&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> cutoff_date<span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 2. \u5c55\u5f00\u5546\u54c1\u6570\u7ec4<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 3. \u6309\u5546\u54c1\u5206\u7ec4\u7edf\u8ba1<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$group&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items.product_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;product_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$first&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items.name&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_quantity&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items.qty&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_sales&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$multiply&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$items.price&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$items.qty&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;order_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 4. \u5173\u8054\u5546\u54c1\u8be6\u60c5&#xff08;\u53ef\u9009&#xff09;<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$lookup&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;from&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;products&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;localField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;foreignField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;as&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;product_info&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 5. \u5c55\u5f00\u5546\u54c1\u4fe1\u606f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;path&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$product_info&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;preserveNullAndEmptyArrays&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">True<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 6. \u6dfb\u52a0\u5546\u54c1\u5206\u7c7b\u4fe1\u606f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$addFields&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;category&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$product_info.category&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 7. \u6309\u9500\u91cf\u6392\u5e8f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$sort&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;total_quantity&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 8. \u53d6\u524dN\u540d<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$limit&#034;<\/span><span class=\"token punctuation\">:<\/span> limit<br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 9. \u91cd\u5851\u8f93\u51fa\u6587\u6863<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;product_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;product_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;category&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_quantity&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_sales&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;order_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;avg_price_per_order&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$divide&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_sales&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>    results <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#061;&#061;&#061; \u8fd1<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>days<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u5929\u70ed\u9500\u5546\u54c1TOP<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>limit<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> &#061;&#061;&#061;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> i<span class=\"token punctuation\">,<\/span> r <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">enumerate<\/span><span class=\"token punctuation\">(<\/span>results<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>i<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">. <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;product_name&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> (<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;category&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u672a\u5206\u7c7b&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">)&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;   \u9500\u91cf: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;total_quantity&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u4ef6, \u9500\u552e\u989d: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;total_sales&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;   \u8ba2\u5355\u6570: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;order_count&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, \u5e73\u5747\u5ba2\u5355\u4ef7: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;avg_price_per_order&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> results<\/p>\n<h4>4.4 \u6848\u4f8b3&#xff1a;\u5ba2\u6237RFM\u5206\u6790<\/h4>\n<p>\u9700\u6c42&#xff1a;\u57fa\u4e8e\u6700\u8fd1\u8d2d\u4e70\u65f6\u95f4&#xff08;Recency&#xff09;\u3001\u8d2d\u4e70\u9891\u7387&#xff08;Frequency&#xff09;\u3001\u6d88\u8d39\u91d1\u989d&#xff08;Monetary&#xff09;\u5bf9\u5ba2\u6237\u8fdb\u884cRFM\u5206\u6790\u3002<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">rfm_analysis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;RFM\u5ba2\u6237\u4ef7\u503c\u5206\u6790&#034;&#034;&#034;<\/span><\/p>\n<p>    now <span class=\"token operator\">&#061;<\/span> datetime<span class=\"token punctuation\">.<\/span>now<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token comment\"># 1. \u53ea\u7edf\u8ba1\u5df2\u5b8c\u6210\u7684\u8ba2\u5355<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 2. \u6309\u7528\u6237\u5206\u7ec4&#xff0c;\u8ba1\u7b97RFM\u6307\u6807<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$group&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;last_order_date&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$max&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$created_at&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;order_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_spent&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$sum&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_amount&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 3. \u8ba1\u7b97R\u3001F\u3001M\u5f97\u5206<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$addFields&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;recency_days&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$floor&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;$divide&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$subtract&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span>now<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$last_order_date&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token number\">1000<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">60<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">60<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">24<\/span>  <span class=\"token comment\"># \u8f6c\u6362\u4e3a\u5929\u6570<\/span><br \/>\n                        <span class=\"token punctuation\">]<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;frequency&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;monetary&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$total_spent&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 4. \u5206\u7bb1\u8bc4\u5206&#xff08;\u7b80\u5355\u793a\u4f8b&#xff09;<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$addFields&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;r_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$switch&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;branches&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$lte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$recency_days&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">7<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$lte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$recency_days&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$lte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$recency_days&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$lte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$recency_days&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">180<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token string\">&#034;default&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;f_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$switch&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;branches&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$order_count&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token string\">&#034;default&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;m_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$switch&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;branches&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_spent&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5000<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_spent&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2000<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_spent&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_spent&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token string\">&#034;default&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 5. \u8ba1\u7b97\u603b\u5206\u5e76\u5206\u7c7b<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$addFields&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;rfm_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$concat&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$toString&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$r_score&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$toString&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$f_score&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$toString&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$m_score&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                    <span class=\"token punctuation\">]<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$add&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$r_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$f_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;$m_score&#034;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 6. \u5ba2\u6237\u5206\u7c7b<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$addFields&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;customer_segment&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;$switch&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token string\">&#034;branches&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">13<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u91cd\u8981\u4ef7\u503c\u5ba2\u6237&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u91cd\u8981\u53d1\u5c55\u5ba2\u6237&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;case&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gte&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;$total_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">7<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;then&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4e00\u822c\u4ef7\u503c\u5ba2\u6237&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                        <span class=\"token string\">&#034;default&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4f4e\u4ef7\u503c\u5ba2\u6237&#034;<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 7. \u6309\u603b\u5206\u6392\u5e8f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$sort&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;total_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 8. \u5173\u8054\u7528\u6237\u8be6\u60c5<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$lookup&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;from&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;users&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;localField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;foreignField&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;as&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 9. \u5c55\u5f00\u7528\u6237\u4fe1\u606f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>        <span class=\"token comment\"># 10. \u8f93\u51fa\u7ed3\u679c<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;user_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$_id&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;user_name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user.name&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;email&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$user.email&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;recency_days&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;order_count&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;total_spent&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;rfm_score&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;customer_segment&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>    results <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061; RFM\u5ba2\u6237\u4ef7\u503c\u5206\u6790 &#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> r <span class=\"token keyword\">in<\/span> results<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span>  <span class=\"token comment\"># \u53ea\u663e\u793a\u524d10\u6761<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u7528\u6237: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;user_name&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> (<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;email&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">)&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  \u6700\u8fd1\u8d2d\u4e70: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;recency_days&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u5929\u524d, \u8ba2\u5355\u6570: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;order_count&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, \u603b\u6d88\u8d39: \u00a5<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;total_spent&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;  RFM\u5f97\u5206: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;rfm_score&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, \u5ba2\u6237\u7c7b\u578b: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>r<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;customer_segment&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> results<\/p>\n<h4>4.5 \u8fd0\u884c\u5b8c\u6574\u793a\u4f8b<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">run_all_analyses<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u8fd0\u884c\u6240\u6709\u5206\u6790\u793a\u4f8b&#034;&#034;&#034;<\/span><\/p>\n<p>    <span class=\"token comment\"># 1. \u7528\u6237\u6d88\u8d39\u5206\u6790<\/span><br \/>\n    analyze_user_spending<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;&#061;&#034;<\/span><span class=\"token operator\">*<\/span><span class=\"token number\">60<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># 2. \u70ed\u9500\u5546\u54c1\u6392\u884c<\/span><br \/>\n    get_top_products<span class=\"token punctuation\">(<\/span>days<span class=\"token operator\">&#061;<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> limit<span class=\"token operator\">&#061;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;&#061;&#034;<\/span><span class=\"token operator\">*<\/span><span class=\"token number\">60<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># 3. RFM\u5206\u6790<\/span><br \/>\n    rfm_analysis<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    run_all_analyses<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>5. \u805a\u5408\u7ba1\u9053\u6027\u80fd\u4f18\u5316<\/h3>\n<h4>5.1 \u4f18\u5316\u539f\u5219<\/h4>\n<p>\u6839\u636e MongoDB \u5b98\u65b9\u5efa\u8bae\u548c\u5b9e\u9645\u7ecf\u9a8c&#xff0c;\u805a\u5408\u7ba1\u9053\u6027\u80fd\u4f18\u5316\u5e94\u9075\u5faa\u4ee5\u4e0b\u539f\u5219&#xff1a;<\/p>\n<p>  #mermaid-svg-87ELINIdjcwBKTPq{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes 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text,#mermaid-svg-87ELINIdjcwBKTPq .node .label text,#mermaid-svg-87ELINIdjcwBKTPq .image-shape .label,#mermaid-svg-87ELINIdjcwBKTPq .icon-shape .label{text-anchor:middle;}#mermaid-svg-87ELINIdjcwBKTPq .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-87ELINIdjcwBKTPq .rough-node .label,#mermaid-svg-87ELINIdjcwBKTPq .node .label,#mermaid-svg-87ELINIdjcwBKTPq .image-shape .label,#mermaid-svg-87ELINIdjcwBKTPq .icon-shape .label{text-align:center;}#mermaid-svg-87ELINIdjcwBKTPq .node.clickable{cursor:pointer;}#mermaid-svg-87ELINIdjcwBKTPq .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-87ELINIdjcwBKTPq .arrowheadPath{fill:#333333;}#mermaid-svg-87ELINIdjcwBKTPq .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-87ELINIdjcwBKTPq .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-87ELINIdjcwBKTPq .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-87ELINIdjcwBKTPq .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-87ELINIdjcwBKTPq .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-87ELINIdjcwBKTPq .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-87ELINIdjcwBKTPq .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-87ELINIdjcwBKTPq .cluster text{fill:#333;}#mermaid-svg-87ELINIdjcwBKTPq .cluster span{color:#333;}#mermaid-svg-87ELINIdjcwBKTPq div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-87ELINIdjcwBKTPq .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-87ELINIdjcwBKTPq rect.text{fill:none;stroke-width:0;}#mermaid-svg-87ELINIdjcwBKTPq .icon-shape,#mermaid-svg-87ELINIdjcwBKTPq .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-87ELINIdjcwBKTPq .icon-shape p,#mermaid-svg-87ELINIdjcwBKTPq .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-87ELINIdjcwBKTPq .icon-shape rect,#mermaid-svg-87ELINIdjcwBKTPq .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-87ELINIdjcwBKTPq .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-87ELINIdjcwBKTPq .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-87ELINIdjcwBKTPq :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"edgeLabel\"><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u6027\u80fd\u4f18\u5316\u539f\u5219<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5c3d\u65e9\u8fc7\u6ee4<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u51cf\u5c11\u6570\u636e<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u5584\u7528\u7d22\u5f15<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u63a7\u5236\u5185\u5b58<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$match \u653e\u5728\u6700\u524d<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$project \u7f29\u51cf\u5b57\u6bb5<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>$unwind \u524d\u5148\u8fc7\u6ee4<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u4e3a$match\/$sort\u5efa\u7d22\u5f15<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u9075\u5faaESR\u539f\u5219<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u542f\u7528 allowDiskUse<\/p>\n<p><\/span><\/p>\n<p>         <span class=\"nodeLabel\"><\/p>\n<p>\u907f\u514d\u5185\u5b58\u6392\u5e8f<\/p>\n<p><\/span><\/p>\n<h4>5.2 \u5177\u4f53\u4f18\u5316\u7b56\u7565<\/h4>\n<h5>5.2.1 \u5c3d\u65e9\u4f7f\u7528 $match<\/h5>\n<p>\u5c06 $match \u9636\u6bb5\u653e\u5728\u7ba1\u9053\u7684\u6700\u524d\u9762&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u540e\u7eed\u9636\u6bb5\u9700\u8981\u5904\u7406\u7684\u6570\u636e\u91cf\u3002<\/p>\n<p><span class=\"token comment\"># \u274c \u4f4e\u6548&#xff1a;\u5148\u5c55\u5f00\u518d\u8fc7\u6ee4<\/span><br \/>\npipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;items.price&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gt&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p><span class=\"token comment\"># \u2705 \u9ad8\u6548&#xff1a;\u5148\u8fc7\u6ee4\u518d\u5c55\u5f00<\/span><br \/>\npipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$gt&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$unwind&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;$items&#034;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<h5>5.2.2 \u4f7f\u7528 $project \u51cf\u5c11\u6570\u636e\u91cf<\/h5>\n<p>\u53ea\u4fdd\u7559\u5fc5\u8981\u7684\u5b57\u6bb5&#xff0c;\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u5185\u5b58\u548c\u7f51\u7edc\u5f00\u9500\u3002<\/p>\n<p>pipeline <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$match&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;completed&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\"># \u5c3d\u65e9\u79fb\u9664\u4e0d\u9700\u8981\u7684\u5927\u5b57\u6bb5<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;$project&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;order_no&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;total_amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;items&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\"># \u540e\u7eed\u64cd\u4f5c&#8230;<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<h5>5.2.3 \u7d22\u5f15\u8bbe\u8ba1\u7b56\u7565<\/h5>\n<ul>\n<li>ESR\u539f\u5219&#xff1a;\u5bf9\u4e8e\u590d\u5408\u7d22\u5f15&#xff0c;\u9075\u5faa Equality&#xff08;\u7b49\u503c\u67e5\u8be2&#xff09;\u3001Sort&#xff08;\u6392\u5e8f&#xff09;\u3001Range&#xff08;\u8303\u56f4\u67e5\u8be2&#xff09;\u7684\u5b57\u6bb5\u987a\u5e8f<\/li>\n<li>\u4e3a $lookup \u5efa\u7acb\u7d22\u5f15&#xff1a;\u786e\u4fdd foreignField \u4e0a\u6709\u7d22\u5f15<\/li>\n<li>\u4f7f\u7528 explain() \u5206\u6790&#xff1a;\u68c0\u67e5\u7d22\u5f15\u4f7f\u7528\u60c5\u51b5<\/li>\n<\/ul>\n<p><span class=\"token comment\"># \u521b\u5efa\u590d\u5408\u7d22\u5f15<\/span><br \/>\ndb<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>create_index<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;created_at&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u5206\u6790\u67e5\u8be2\u8ba1\u5212<\/span><br \/>\nexplain_result <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">,<\/span> explain<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>explain_result<span class=\"token punctuation\">)<\/span><\/p>\n<h5>5.2.4 \u5904\u7406\u5927\u6570\u636e\u96c6<\/h5>\n<p>\u5f53\u7ba1\u9053\u5904\u7406\u7684\u6570\u636e\u91cf\u8d85\u8fc7 100MB \u5185\u5b58\u9650\u5236\u65f6&#xff0c;\u9700\u8981\u542f\u7528 allowDiskUse \u9009\u9879\u3002<\/p>\n<p><span class=\"token comment\"># \u5141\u8bb8\u4f7f\u7528\u78c1\u76d8\u5904\u7406\u5927\u6570\u636e<\/span><br \/>\nresults <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>orders<span class=\"token punctuation\">.<\/span>aggregate<span class=\"token punctuation\">(<\/span>pipeline<span class=\"token punctuation\">,<\/span> allowDiskUse<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>5.3 \u5e38\u89c1\u6027\u80fd\u9677\u9631<\/h4>\n<table>\n<tr>\u9677\u9631\u540e\u679c\u89e3\u51b3\u65b9\u6848<\/tr>\n<tbody>\n<tr>\n<td>$match \u653e\u5728\u540e\u9762<\/td>\n<td>\u5927\u91cf\u65e0\u7528\u6570\u636e\u6d41\u7ecf\u7ba1\u9053<\/td>\n<td>\u5c06 $match \u79fb\u5230\u6700\u524d\u9762<\/td>\n<\/tr>\n<tr>\n<td>\u7f3a\u5c11\u5fc5\u8981\u7d22\u5f15<\/td>\n<td>\u5168\u8868\u626b\u63cf&#xff0c;\u6027\u80fd\u4f4e\u4e0b<\/td>\n<td>\u5206\u6790\u67e5\u8be2&#xff0c;\u521b\u5efa\u5408\u9002\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>$unwind \u540e\u6570\u636e\u66b4\u589e<\/td>\n<td>\u5185\u5b58\u538b\u529b\u5927<\/td>\n<td>\u5c55\u5f00\u524d\u5148\u8fc7\u6ee4&#xff0c;\u8003\u8651\u662f\u5426\u9700\u8981\u5c55\u5f00<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u4e2d\u6392\u5e8f\u5927\u6570\u636e\u96c6<\/td>\n<td>\u6392\u5e8f\u8d85\u65f6\u6216\u5931\u8d25<\/td>\n<td>\u521b\u5efa\u7d22\u5f15\u652f\u6301\u6392\u5e8f&#xff0c;\u542f\u7528 allowDiskUse<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u4e2a $lookup \u4e32\u8054<\/td>\n<td>\u6027\u80fd\u6025\u5267\u4e0b\u964d<\/td>\n<td>\u5408\u5e76\u5173\u8054\u6761\u4ef6&#xff0c;\u4f7f\u7528\u5b50\u7ba1\u9053<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>6. \u603b\u7ed3<\/h3>\n<p>MongoDB \u805a\u5408\u7ba1\u9053\u662f\u4e00\u4e2a\u5f3a\u5927\u800c\u7075\u6d3b\u7684\u6570\u636e\u5904\u7406\u6846\u67b6&#xff0c;\u5b83\u901a\u8fc7\u591a\u4e2a\u9636\u6bb5\u7684\u7ec4\u5408&#xff0c;\u80fd\u591f\u5b8c\u6210\u4ece\u7b80\u5355\u8fc7\u6ee4\u5230\u590d\u6742\u591a\u8868\u5173\u8054\u3001\u7edf\u8ba1\u5206\u6790\u7b49\u5404\u79cd\u67e5\u8be2\u9700\u6c42\u3002\u638c\u63e1\u805a\u5408\u7ba1\u9053&#xff0c;\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u76f4\u63a5\u5728\u6570\u636e\u5e93\u5c42\u9762\u5b8c\u6210\u590d\u6742\u7684\u6570\u636e\u5904\u7406&#xff0c;\u65e0\u9700\u5c06\u5927\u91cf\u6570\u636e\u62c9\u5230\u5e94\u7528\u5c42\u8ba1\u7b97\u3002<\/p>\n<p>\u5173\u952e\u8981\u70b9\u56de\u987e&#xff1a;<\/p>\n<li>\u7ba1\u9053\u601d\u7ef4&#xff1a;\u5c06\u590d\u6742\u67e5\u8be2\u5206\u89e3\u4e3a\u591a\u4e2a\u9636\u6bb5&#xff0c;\u6bcf\u4e2a\u9636\u6bb5\u5b8c\u6210\u4e00\u4e2a\u660e\u786e\u7684\u4efb\u52a1<\/li>\n<li>\u9636\u6bb5\u987a\u5e8f&#xff1a;$match \u548c $project \u5c3d\u53ef\u80fd\u63d0\u524d&#xff0c;\u51cf\u5c11\u540e\u7eed\u9636\u6bb5\u6570\u636e\u91cf<\/li>\n<li>\u5584\u7528\u7d22\u5f15&#xff1a;\u4e3a $match\u3001$sort \u548c $lookup \u7684\u5173\u8054\u5b57\u6bb5\u521b\u5efa\u7d22\u5f15<\/li>\n<li>\u5185\u5b58\u610f\u8bc6&#xff1a;\u4e86\u89e3 100MB \u5185\u5b58\u9650\u5236&#xff0c;\u5927\u6570\u636e\u91cf\u65f6\u542f\u7528 allowDiskUse<\/li>\n<li>\u5de5\u5177\u8f85\u52a9&#xff1a;\u4f7f\u7528 explain() \u5206\u6790\u67e5\u8be2\u8ba1\u5212&#xff0c;\u6301\u7eed\u4f18\u5316<\/li>\n<p>\u901a\u8fc7\u672c\u6587\u7684\u5b9e\u6218\u6848\u4f8b&#xff0c;\u4f60\u5e94\u8be5\u5df2\u7ecf\u638c\u63e1\u4e86 MongoDB \u805a\u5408\u7ba1\u9053\u7684\u6838\u5fc3\u7528\u6cd5\u548c\u4f18\u5316\u6280\u5de7\u3002\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u5efa\u8bae\u7ed3\u5408\u5177\u4f53\u4e1a\u52a1\u9700\u6c42\u548c\u6570\u636e\u7279\u70b9&#xff0c;\u7075\u6d3b\u7ec4\u5408\u5404\u4e2a\u9636\u6bb5&#xff0c;\u6784\u5efa\u51fa\u65e2\u6ee1\u8db3\u529f\u80fd\u9700\u6c42\u53c8\u5177\u5907\u826f\u597d\u6027\u80fd\u7684\u805a\u5408\u67e5\u8be2\u3002<\/p>\n<hr \/>\n<p>\u9644\u5f55&#xff1a;\u8fd0\u884c\u73af\u5883\u8981\u6c42<\/p>\n<p><span class=\"token comment\"># \u5b89\u88c5\u4f9d\u8d56<\/span><br \/>\npip <span class=\"token function\">install<\/span> <span class=\"token assign-left variable\">pymongo<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">4.5<\/span>.0<\/p>\n<p><span class=\"token comment\"># \u542f\u52a8 MongoDB&#xff08;Docker\u65b9\u5f0f&#xff09;<\/span><br \/>\n<span class=\"token function\">docker<\/span> run -d &#8211;name mongodb -p <span class=\"token number\">27017<\/span>:27017 mongo:6.0<\/p>\n<p><span class=\"token comment\"># \u8fdb\u5165 MongoDB Shell<\/span><br \/>\n<span class=\"token function\">docker<\/span> <span class=\"token builtin class-name\">exec<\/span> -it mongodb mongosh<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f55MongoDB\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2&#xff1a;\u4ece\u57fa\u7840\u5230\u5b9e\u6218\u7684\u5b8c\u6574\u6307\u53571. \u5f15\u8a002. \u805a\u5408\u7ba1\u9053\u57fa\u7840\u6982\u5ff52.1 \u4ec0\u4e48\u662f\u805a\u5408\u7ba1\u9053&#xff1f;2.2 \u805a\u5408\u8bed\u6cd52.3 \u805a\u5408\u9636\u6bb5\u5206\u7c7b3. \u6838\u5fc3\u805a\u5408\u9636\u6bb5\u8be6\u89e33.1 $match&#xff1a;\u6570\u636e\u8fc7\u6ee43.2 $project&#xff1a;\u5b57\u6bb5\u6295\u5f71\u4e0e\u91cd\u58513.3 $group&#xff1a;\u5206\u7ec4\u805a\u54083.4 $unwind&#xff1a;\u5c55\u5f00\u6570\u7ec43.5 $lookup&#xff1a;\u591a\u96c6\u5408\u5173\u8054\u67e5\u8be23.6 sort\u3001sort\u3001sort\u3001<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8694,8695,1463,604,190,3742,5700],"topic":[],"class_list":["post-78633","post","type-post","status-publish","format-standard","hentry","category-server","tag-lookup","tag-match","tag-lua","tag-oracle","tag-190","tag-3742","tag-5700"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/78633.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u76ee\u5f55MongoDB\u805a\u5408\u7ba1\u9053\u4e0e\u590d\u6742\u67e5\u8be2&#xff1a;\u4ece\u57fa\u7840\u5230\u5b9e\u6218\u7684\u5b8c\u6574\u6307\u53571. \u5f15\u8a002. \u805a\u5408\u7ba1\u9053\u57fa\u7840\u6982\u5ff52.1 \u4ec0\u4e48\u662f\u805a\u5408\u7ba1\u9053&#xff1f;2.2 \u805a\u5408\u8bed\u6cd52.3 \u805a\u5408\u9636\u6bb5\u5206\u7c7b3. \u6838\u5fc3\u805a\u5408\u9636\u6bb5\u8be6\u89e33.1 $match&#xff1a;\u6570\u636e\u8fc7\u6ee43.2 $project&#xff1a;\u5b57\u6bb5\u6295\u5f71\u4e0e\u91cd\u58513.3 $group&#xff1a;\u5206\u7ec4\u805a\u54083.4 $unwind&#xff1a;\u5c55\u5f00\u6570\u7ec43.5 $lookup&#xff1a;\u591a\u96c6\u5408\u5173\u8054\u67e5\u8be23.6 sort\u3001sort\u3001sort\u3001\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/78633.html\" \/>\n<meta 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