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使用自定义 SQL 重构数据


发布时间: 10 Mar 2014
上次修改日期: 05 Jan 2024

问题

如何使用自定义 SQL 重构数据。

环境

  • Tableau Desktop

答案

可以在以下附加的工作簿中查看以下说明。
  1. 连接到数据源。
  2. 单击“自定义 SQL”
  3. 单击“...”编辑自定义 SQL 语句。
  4. 输入与以下语句类似的语句:
    SELECT [Sheet1$].[Fruit Batch ID] AS [Fruit Batch ID],
      [Sheet1$].[Number of Bad Fruit_Bruised] AS [Value],
      "Bruised Fruit" AS [Reason]
    FROM [Sheet1$]
    
    UNION ALL
    
    SELECT [Sheet1$].[Fruit Batch ID] AS [Fruit Batch ID],
      [Sheet1$].[Number of Bad Fruit_Rotten] AS [Value],
      "Rotten Fruit" AS [Reason]
    FROM [Sheet1$]
    
    UNION ALL
    
    SELECT [Sheet1$].[Fruit Batch ID] AS [Fruit Batch ID],
      [Sheet1$].[Number of Bad Fruit_Too Big] AS [Value],
      "Too Big" AS [Reason]
    FROM [Sheet1$]
    
    UNION ALL
    
    SELECT [Sheet1$].[Fruit Batch ID] AS [Fruit Batch ID],
      [Sheet1$].[Number of Bad Fruit_Too Small] AS [Value],
      "Too Small" AS [Reason]
    FROM [Sheet1$]
  5. 单击“确定”
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