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  • MySQL数据库行转列

    一、数据源如下所示

     二、对应SQL语句如下所示

    -- 行转列

    SELECT t1.`产品名称`,
    SUM(CASE t1.`日期` WHEN '2019-11-11' THEN t1.`数量` ELSE 0 END) AS '2019-11-11',
    SUM(CASE t1.`日期` WHEN '2019-11-12' THEN t1.`数量` ELSE 0 END) AS '2019-11-12',
    SUM(CASE t1.`日期` WHEN '2019-11-13' THEN t1.`数量` ELSE 0 END) AS '2019-11-13',
    SUM(CASE t1.`日期` WHEN '2019-11-14' THEN t1.`数量` ELSE 0 END) AS '2019-11-14',
    SUM(CASE t1.`日期` WHEN '2019-11-15' THEN t1.`数量` ELSE 0 END) AS '2019-11-15',
    SUM(CASE t1.`日期` WHEN '2019-11-16' THEN t1.`数量` ELSE 0 END) AS '2019-11-16',
    SUM(CASE t1.`日期` WHEN '2019-11-17' THEN t1.`数量` ELSE 0 END) AS '2019-11-17'
    FROM sheet2 t1 GROUP BY t1.`产品名称` LIMIT 0, 1000;

    三、最终结果如下所示

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  • 原文地址:https://www.cnblogs.com/lcl-cn/p/13881610.html
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