{"id":170169,"date":"2024-11-06T21:43:28","date_gmt":"2024-11-06T13:43:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/170169\/"},"modified":"2024-11-06T21:43:29","modified_gmt":"2024-11-06T13:43:29","slug":"%e6%8e%92%e5%ba%8f%e5%be%8c%e8%a1%a8%e4%b8%adsql%e5%ad%97%e6%ae%b5%e7%9b%b8%e5%8a%a0%e7%9a%84%e5%95%8f%e9%a1%8c%e8%a7%a3%e6%b1%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/170169\/","title":{"rendered":"\u6392\u5e8f\u5f8c\u8868\u4e2dSQL\u5b57\u6bb5\u76f8\u52a0\u7684\u554f\u984c\u89e3\u6c7a"},"content":{"rendered":"

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\u554f\u984c\u80cc\u666f<\/h2>\n

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\u57fa\u672cSQL\u67e5\u8a62\u793a\u4f8b<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u4f86\u770b\u4e00\u500b\u57fa\u672c\u7684SQL\u67e5\u8a62\u793a\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u7684\u8868\u540d\u70ba sales<\/code>\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n

\nCREATE TABLE sales (\n    id INT PRIMARY KEY,\n    salesperson VARCHAR(100),\n    amount DECIMAL(10, 2),\n    sale_date DATE\n);\n<\/pre>\n
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\nSELECT salesperson, SUM(amount) AS total_sales\nFROM sales\nGROUP BY salesperson;\n<\/pre>\n
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\u6392\u5e8f\u5f8c\u7684\u76f8\u52a0<\/h2>\n
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\nWITH RankedSales AS (\n    SELECT salesperson, amount, sale_date,\n           ROW_NUMBER() OVER (PARTITION BY salesperson ORDER BY sale_date) AS rn\n    FROM sales\n)\nSELECT salesperson, SUM(amount) AS total_sales\nFROM RankedSales\nGROUP BY salesperson\nORDER BY total_sales DESC;\n<\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u9996\u5148\u4f7f\u7528CTE\u4f86\u70ba\u6bcf\u4f4d\u92b7\u552e\u4eba\u54e1\u7684\u92b7\u552e\u8a18\u9304\u9032\u884c\u6392\u5e8f\uff0c\u7136\u5f8c\u5728\u5916\u90e8\u67e5\u8a62\u4e2d\u8a08\u7b97\u6bcf\u4f4d\u92b7\u552e\u4eba\u54e1\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u4e26\u6839\u64da\u7e3d\u92b7\u552e\u984d\u9032\u884c\u6392\u5e8f\u3002<\/p>\n
\u4f7f\u7528\u7a97\u53e3\u51fd\u6578\u9032\u884c\u76f8\u52a0<\/h2>\n
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\nSELECT salesperson, \n       SUM(amount) OVER (PARTITION BY salesperson ORDER BY sale_date) AS cumulative_sales\nFROM sales\nORDER BY sale_date;\n<\/pre>\n
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\u7d50\u8ad6<\/h2>\n
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