{"id":172459,"date":"2024-11-07T13:18:20","date_gmt":"2024-11-07T05:18:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172459\/"},"modified":"2024-11-07T13:18:21","modified_gmt":"2024-11-07T05:18:21","slug":"%e5%a6%82%e4%bd%95%e6%8c%89%e7%85%a7%e5%85%a9%e5%80%8b%e5%85%83%e7%b4%a0%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%b2%e8%a1%8c%e5%88%86%e7%b5%84%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8c%89%e7%85%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172459\/","title":{"rendered":"\u5982\u4f55\u6309\u7167\u5169\u500b\u5143\u7d20\u5c0d\u6578\u64da\u5eab\u9032\u884c\u5206\u7d44\uff1f (\u6578\u64da\u5eab\u6309\u7167\u5169\u500b\u5143\u7d20\u5206\u7d44)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%8c%89%e7%85%a7%e5%85%a9%e5%80%8b%e5%85%83%e7%b4%a0%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%b2%e8%a1%8c%e5%88%86%e7%b5%84%ef%bc%9f-uSjPkRQfLO\">\u5982\u4f55\u6309\u7167\u5169\u500b\u5143\u7d20\u5c0d\u6578\u64da\u5eab\u9032\u884c\u5206\u7d44\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5206\u7d44\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5f9e\u5927\u91cf\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u610f\u7fa9\u7684\u4fe1\u606f\u6642\u3002\u7576\u6211\u5011\u9700\u8981\u6839\u64da\u591a\u500b\u689d\u4ef6\u4f86\u9032\u884c\u5206\u7d44\u6642\uff0c\u9019\u4e00\u904e\u7a0b\u53ef\u80fd\u6703\u8b8a\u5f97\u66f4\u52a0\u8907\u96dc\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6309\u7167\u5169\u500b\u5143\u7d20\u5c0d\u6578\u64da\u5eab\u9032\u884c\u5206\u7d44\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e7%b5%84%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-uSjPkRQfLO\">\u6578\u64da\u5eab\u5206\u7d44\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u5206\u7d44\u901a\u5e38\u662f\u901a\u904e SQL \u8a9e\u53e5\u4e2d\u7684 <code>GROUP BY<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u7684\u3002\u9019\u500b\u5b50\u53e5\u5141\u8a31\u7528\u6236\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u5217\u7684\u503c\u4f86\u805a\u5408\u6578\u64da\u3002\u7576\u6211\u5011\u9700\u8981\u6839\u64da\u5169\u500b\u5143\u7d20\u9032\u884c\u5206\u7d44\u6642\uff0c\u53ef\u4ee5\u5728 <code>GROUP BY<\/code> \u5b50\u53e5\u4e2d\u5217\u51fa\u9019\u5169\u500b\u5143\u7d20\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e9%80%b2%e8%a1%8c%e9%9b%99%e5%85%83%e7%b4%a0%e5%88%86%e7%b5%84-uSjPkRQfLO\">\u4f7f\u7528 SQL \u9032\u884c\u96d9\u5143\u7d20\u5206\u7d44<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>sales<\/code> \u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li><code>id<\/code> &#8211; \u92b7\u552e\u8a18\u9304\u7684\u552f\u4e00\u6a19\u8b58<\/li>\n<li><code>product<\/code> &#8211; \u92b7\u552e\u7684\u7522\u54c1\u540d\u7a31<\/li>\n<li><code>region<\/code> &#8211; \u92b7\u552e\u7684\u5730\u5340<\/li>\n<li><code>amount<\/code> &#8211; \u92b7\u552e\u91d1\u984d<\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u6839\u64da <code>product<\/code> \u548c <code>region<\/code> \u4f86\u8a08\u7b97\u6bcf\u500b\u7522\u54c1\u5728\u6bcf\u500b\u5730\u5340\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT product, region, SUM(amount) AS total_sales\nFROM sales\nGROUP BY product, region;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u9078\u64c7\u4e86 <code>product<\/code> \u548c <code>region<\/code> \u5169\u500b\u5217\uff0c\u4e26\u4f7f\u7528 <code>SUM()<\/code> \u51fd\u6578\u4f86\u8a08\u7b97\u6bcf\u7d44\u7684\u7e3d\u92b7\u552e\u984d\u3002\u7d50\u679c\u5c07\u986f\u793a\u6bcf\u500b\u7522\u54c1\u5728\u6bcf\u500b\u5730\u5340\u7684\u92b7\u552e\u7e3d\u984d\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e5%b1%a4%e6%ac%a1%e5%88%86%e7%b5%84%e7%9a%84%e6%87%89%e7%94%a8-uSjPkRQfLO\">\u591a\u5c64\u6b21\u5206\u7d44\u7684\u61c9\u7528<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u9032\u884c\u66f4\u8907\u96dc\u7684\u5206\u7d44\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u9084\u60f3\u8981\u6839\u64da\u92b7\u552e\u65e5\u671f\u9032\u884c\u5206\u7d44\uff0c\u9019\u6a23\u6211\u5011\u5c31\u53ef\u4ee5\u67e5\u770b\u6bcf\u500b\u7522\u54c1\u5728\u6bcf\u500b\u5730\u5340\u7684\u6708\u5ea6\u92b7\u552e\u60c5\u6cc1\u3002\u9019\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>DATE_FORMAT()<\/code> \u51fd\u6578\u4f86\u63d0\u53d6\u6708\u4efd\uff0c\u4e26\u5c07\u5176\u7d0d\u5165\u5206\u7d44\u689d\u4ef6\u4e2d\uff1a<\/p>\n<pre><code>SELECT product, region, DATE_FORMAT(sale_date, '%Y-%m') AS sale_month, SUM(amount) AS total_sales\nFROM sales\nGROUP BY product, region, sale_month;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u7522\u54c1\u5728\u6bcf\u500b\u5730\u5340\u7684\u6bcf\u500b\u6708\u7684\u92b7\u552e\u7e3d\u984d\uff0c\u63d0\u4f9b\u4e86\u66f4\u7d30\u7dfb\u7684\u6578\u64da\u5206\u6790\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-uSjPkRQfLO\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u591a\u5143\u7d20\u5206\u7d44\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6240\u6709\u5728 <code>SELECT<\/code> \u8a9e\u53e5\u4e2d\u51fa\u73fe\u7684\u975e\u805a\u5408\u5217\u90fd\u5305\u542b\u5728 <code>GROUP BY<\/code> \u5b50\u53e5\u4e2d\u3002<\/li>\n<li>\u4f7f\u7528\u805a\u5408\u51fd\u6578\uff08\u5982 <code>SUM()<\/code>, <code>COUNT()<\/code>, <code>AVG()<\/code> \u7b49\uff09\u4f86\u8a08\u7b97\u5206\u7d44\u5f8c\u7684\u6578\u64da\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u7684\u5927\u5c0f\u548c\u8907\u96dc\u6027\uff0c\u904e\u591a\u7684\u5206\u7d44\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-uSjPkRQfLO\">\u7d50\u8ad6<\/h2>\n<p>\u6309\u7167\u5169\u500b\u5143\u7d20\u5c0d\u6578\u64da\u5eab\u9032\u884c\u5206\u7d44\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5f9e\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u4fe1\u606f\u3002\u901a\u904e\u4f7f\u7528 SQL \u7684 <code>GROUP BY<\/code> \u5b50\u53e5\uff0c\u4e26\u7d50\u5408\u805a\u5408\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5206\u6790\u548c\u5831\u544a\u6578\u64da\u3002\u7121\u8ad6\u662f\u7c21\u55ae\u7684\u5206\u7d44\u9084\u662f\u591a\u5c64\u6b21\u7684\u5206\u6790\uff0c\u638c\u63e1\u9019\u4e9b\u6280\u8853\u90fd\u5c07\u5c0d\u6578\u64da\u5eab\u7ba1\u7406\u548c\u6578\u64da\u5206\u6790\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u548c\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6839\u64da\u5169\u500b\u5143\u7d20\u5c0d\u6578\u64da\u5eab\u9032\u884c\u5206\u7d44\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\uff0c\u512a\u5316\u67e5\u8a62\u7d50\u679c\uff0c\u5be6\u73fe\u7cbe\u78ba\u6578\u64da\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-172459","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=172459"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172459\/revisions"}],"predecessor-version":[{"id":172460,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172459\/revisions\/172460"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172459"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}