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使用自訂 SQL 重構資料


發佈時間 : 10 Mar 2014
上次修改日期 : 05 Jan 2024

問題

如何使用自訂 SQL 重構資料。

環境

  • Tableau Desktop

答案

可以在以下附加的工作簿中查看以下說明。
  1. 連線到資料來源。
  2. 按一下自訂 SQL
  3. 按一下 ... 以編輯自訂 SQL 陳述式。
  4. 輸入類似於以下陳述式的陳述式:
    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. 按一下「確定」
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