{"id":161723,"date":"2024-11-04T08:48:26","date_gmt":"2024-11-04T00:48:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161723\/"},"modified":"2024-11-04T08:48:27","modified_gmt":"2024-11-04T00:48:27","slug":"%e5%9f%ba%e6%96%bc-sql-%e7%9a%84%e6%95%b8%e6%93%9a%e5%8f%af%e8%a6%96%e5%8c%96%e5%92%8c%e6%95%b8%e6%93%9a%e6%8c%96%e6%8e%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161723\/","title":{"rendered":"\u57fa\u65bc SQL \u7684\u6578\u64da\u53ef\u8996\u5316\u548c\u6578\u64da\u6316\u6398"},"content":{"rendered":"<h1 id=\"%e5%9f%ba%e6%96%bc-sql-%e7%9a%84%e6%95%b8%e6%93%9a%e5%8f%af%e8%a6%96%e5%8c%96%e5%92%8c%e6%95%b8%e6%93%9a%e6%8c%96%e6%8e%98-dRjcKsijQg\">\u57fa\u65bc SQL 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id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%8f%af%e8%a6%96%e5%8c%96%ef%bc%9f-dRjcKsijQg\">\u4ec0\u9ebc\u662f\u6578\u64da\u53ef\u8996\u5316\uff1f<\/h2>\n<p>\u6578\u64da\u53ef\u8996\u5316\u662f\u5c07\u6578\u64da\u8f49\u63db\u70ba\u5716\u5f62\u6216\u5716\u50cf\u7684\u904e\u7a0b\uff0c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u7406\u89e3\u548c\u5206\u6790\u3002\u901a\u904e\u53ef\u8996\u5316\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u5feb\u901f\u8b58\u5225\u6578\u64da\u4e2d\u7684\u6a21\u5f0f\u3001\u8da8\u52e2\u548c\u7570\u5e38\u3002\u5e38\u898b\u7684\u6578\u64da\u53ef\u8996\u5316\u5de5\u5177\u5305\u62ec\u5716\u8868\u3001\u5730\u5716\u548c\u5100\u8868\u677f\u7b49\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e6%8c%96%e6%8e%98%ef%bc%9f-dRjcKsijQg\">\u4ec0\u9ebc\u662f\u6578\u64da\u6316\u6398\uff1f<\/h2>\n<p>\u6578\u64da\u6316\u6398\u662f\u5f9e\u5927\u91cf\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u7528\u4fe1\u606f\u7684\u904e\u7a0b\u3002\u9019\u4e00\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u7d71\u8a08\u5b78\u3001\u6a5f\u5668\u5b78\u7fd2\u548c\u6578\u64da\u5eab\u6280\u8853\u3002\u6578\u64da\u6316\u6398\u7684\u76ee\u7684\u662f\u767c\u73fe\u6578\u64da\u4e2d\u7684\u96b1\u85cf\u6a21\u5f0f\u548c\u95dc\u806f\uff0c\u5f9e\u800c\u652f\u6301\u6c7a\u7b56\u5236\u5b9a\u3002<\/p>\n<h2 id=\"sql-%e5%9c%a8%e6%95%b8%e6%93%9a%e5%8f%af%e8%a6%96%e5%8c%96%e5%92%8c%e6%95%b8%e6%93%9a%e6%8c%96%e6%8e%98%e4%b8%ad%e7%9a%84%e8%a7%92%e8%89%b2-dRjcKsijQg\">SQL \u5728\u6578\u64da\u53ef\u8996\u5316\u548c\u6578\u64da\u6316\u6398\u4e2d\u7684\u89d2\u8272<\/h2>\n<p>SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5b83\u5728\u6578\u64da\u53ef\u8996\u5316\u548c\u6578\u64da\u6316\u6398\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u9ad8\u6548\u5730\u67e5\u8a62\u548c\u8655\u7406\u5927\u91cf\u6578\u64da\u3002<\/p>\n<h3 id=\"%e6%95%b8%e6%93%9a%e6%8f%90%e5%8f%96-dRjcKsijQg\">\u6578\u64da\u63d0\u53d6<\/h3>\n<p>\u5728\u9032\u884c\u6578\u64da\u53ef\u8996\u5316\u548c\u6316\u6398\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 SQL \u67e5\u8a62\u793a\u4f8b\uff0c\u7528\u65bc\u5f9e\u4e00\u500b\u540d\u70ba &#8220;sales&#8221; \u7684\u8868\u4e2d\u63d0\u53d6\u92b7\u552e\u6578\u64da\uff1a<\/p>\n<pre><code>SELECT product, SUM(sales_amount) AS total_sales\nFROM sales\nGROUP BY product\nORDER BY total_sales DESC;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u4e26\u6309\u92b7\u552e\u984d\u964d\u5e8f\u6392\u5217\uff0c\u70ba\u5f8c\u7e8c\u7684\u53ef\u8996\u5316\u63d0\u4f9b\u4e86\u57fa\u790e\u6578\u64da\u3002<\/p>\n<h3 id=\"%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90-dRjcKsijQg\">\u6578\u64da\u5206\u6790<\/h3>\n<p>\u5728\u63d0\u53d6\u6578\u64da\u5f8c\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u9032\u884c\u5206\u6790\u3002SQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u805a\u5408\u51fd\u6578\uff08\u5982 COUNT\u3001SUM\u3001AVG \u7b49\uff09\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u9032\u884c\u6578\u64da\u5206\u6790\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u53ef\u4ee5\u8a08\u7b97\u6bcf\u500b\u985e\u5225\u7684\u5e73\u5747\u92b7\u552e\u984d\uff1a<\/p>\n<pre><code>SELECT category, AVG(sales_amount) AS average_sales\nFROM sales\nGROUP BY category;<\/code><\/pre>\n<h3 id=\"%e6%95%b8%e6%93%9a%e5%8f%af%e8%a6%96%e5%8c%96-dRjcKsijQg\">\u6578\u64da\u53ef\u8996\u5316<\/h3>\n<p>\u4e00\u65e6\u6578\u64da\u88ab\u63d0\u53d6\u548c\u5206\u6790\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u5c07\u5176\u53ef\u8996\u5316\u3002\u8a31\u591a\u6578\u64da\u53ef\u8996\u5316\u5de5\u5177\uff08\u5982 Tableau\u3001Power BI \u548c Google Data Studio\uff09\u90fd\u652f\u6301\u76f4\u63a5\u5f9e SQL \u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u7528\u6236\u53ef\u4ee5\u5c07 SQL \u67e5\u8a62\u7684\u7d50\u679c\u5c0e\u5165\u9019\u4e9b\u5de5\u5177\uff0c\u4e26\u4f7f\u7528\u5404\u7a2e\u5716\u8868\u548c\u5716\u5f62\u4f86\u5c55\u793a\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%96%bc-sql-%e7%9a%84%e6%95%b8%e6%93%9a%e6%8c%96%e6%8e%98%e6%8a%80%e8%a1%93-dRjcKsijQg\">\u57fa\u65bc SQL \u7684\u6578\u64da\u6316\u6398\u6280\u8853<\/h2>\n<p>\u6578\u64da\u6316\u6398\u6280\u8853\u901a\u5e38\u5305\u62ec\u5206\u985e\u3001\u56de\u6b78\u3001\u805a\u985e\u548c\u95dc\u806f\u898f\u5247\u6316\u6398\u7b49\u3002\u9019\u4e9b\u6280\u8853\u53ef\u4ee5\u5e6b\u52a9\u4f01\u696d\u5f9e\u6578\u64da\u4e2d\u7372\u53d6\u6709\u50f9\u503c\u7684\u898b\u89e3\u3002<\/p>\n<h3 id=\"%e5%88%86%e9%a1%9e-dRjcKsijQg\">\u5206\u985e<\/h3>\n<p>\u5206\u985e\u662f\u4e00\u7a2e\u76e3\u7763\u5b78\u7fd2\u6280\u8853\uff0c\u7528\u65bc\u5c07\u6578\u64da\u5206\u914d\u5230\u9810\u5b9a\u7fa9\u7684\u985e\u5225\u4e2d\u3002SQL \u53ef\u4ee5\u7528\u65bc\u6e96\u5099\u8a13\u7df4\u6578\u64da\u96c6\uff0c\u7136\u5f8c\u4f7f\u7528\u6a5f\u5668\u5b78\u7fd2\u7b97\u6cd5\u9032\u884c\u5206\u985e\u3002<\/p>\n<h3 id=\"%e8%81%9a%e9%a1%9e-dRjcKsijQg\">\u805a\u985e<\/h3>\n<p>\u805a\u985e\u662f\u4e00\u7a2e\u7121\u76e3\u7763\u5b78\u7fd2\u6280\u8853\uff0c\u7528\u65bc\u5c07\u76f8\u4f3c\u7684\u6578\u64da\u9ede\u5206\u7d44\u3002SQL \u53ef\u4ee5\u7528\u65bc\u63d0\u53d6\u7279\u5fb5\uff0c\u7136\u5f8c\u4f7f\u7528\u805a\u985e\u7b97\u6cd5\uff08\u5982 K-means\uff09\u9032\u884c\u5206\u6790\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-dRjcKsijQg\">\u7d50\u8ad6<\/h2>\n<p>\u57fa\u65bc SQL \u7684\u6578\u64da\u53ef\u8996\u5316\u548c\u6578\u64da\u6316\u6398\u6280\u8853\u70ba\u4f01\u696d\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5de5\u5177\uff0c\u4ee5\u4fbf\u5f9e\u5927\u91cf\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u898b\u89e3\u3002\u901a\u904e\u6709\u6548\u5730\u4f7f\u7528 SQL\uff0c\u4f01\u696d\u80fd\u5920\u66f4\u597d\u5730\u7406\u89e3\u5176\u6578\u64da\uff0c\u4e26\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u6301\u7e8c\u589e\u9577\uff0c\u9019\u4e9b\u6280\u8853\u7684\u91cd\u8981\u6027\u5c07\u6108\u52a0\u51f8\u986f\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u696d\u52d9\u4e2d\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u611f\u8208\u8da3\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5206\u6790\u9700\u6c42\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u57fa\u65bc SQL \u7684\u6578\u64da\u53ef\u8996\u5316\u548c\u6578\u64da\u6316\u6398\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u80fd\u529b\uff0c\u767c\u6398\u6f5b\u5728\u5546\u6a5f\u548c\u6d1e\u5bdf\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-161723","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161723","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=161723"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161723\/revisions"}],"predecessor-version":[{"id":161724,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161723\/revisions\/161724"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161723"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}