How to fix "[Teradata][ODBC Teradata Driver][Teradata Database] Syntax error: ORDER BY is not allowed in subqueries." in tableau query

Question

我正在创建一个查询，用于从将在 tableau 中使用的 teradata 中提取数据，我需要修复查询的哪一部分？

这个查询我在 Teradata sql 助手中尝试过，它有效，但是当我移动到画面时，它总是以错误 ORDER BY is not allowed in subquerie

teradata sql 查询下方：

    Select  
    ChannelType,Group,
    LevelType,
    EXTRACT(YEAR From CDate) as KYear, 
    EXTRACT(MOnth From CDate) as KMonth, 

    Case 
    when Position('Live' IN modeType) >0 then 'L'
    else 'S'
    end as LS,

    Sum(watch) as Watches,
    Sum(amount) as amounts
    zeroifnull(amounts)/zeroifnull(Watches,)as result,

    CASE 
    WHEN result >0 then 'WIN'
    ELSE 'LOSE'
    END AS WL Class

    From Mart_wodo.data where
    CDate between date'2018-01-01' and date'2018-12-31'  and
    Group in('L1','L2','L3','L4','L5') and
    LevelType NOT IN('0') and 
    Channeltype in('TV','TY,'IG')

    Group By Channeltype , Group, LevelType, KYear, KMonth,LS

    Order BY  KYear, KMonth,Channeltype, Group,LS asc

Answer 1

我的猜测是 Tableau 将您的查询包装在外部 SELECT 中，这就是您收到 ORDER BY not allowed 错误消息的原因，但它在 SQL 中按原样工作助手。

如果是这种情况，您需要删除 ORDER BY 子句并查看是否可以通过 Tableau 指定最终顺序。或者可能将您的 SQL 包装在一个视图中并通过 Tableau 访问该视图：link

作为一个潜在的 hack（它可能不会起作用），您可以尝试重新排序 GROUP BY 列或添加一个带有 ORDER BY 子句的虚拟 window 函数，并且看看有没有效果：

Select  
  ChannelType,Group,
  ...
  ROW_NUMBER() OVER(ORDER BY KYear, KMonth, Channeltype, Group, LS ASC) AS RowNum

From Mart_wodo.data where
CDate between date'2018-01-01' and date'2018-12-31'  and
Group in('L1','L2','L3','L4','L5') and
LevelType NOT IN('0') and 
Channeltype in('TV','TY,'IG')

Group By KYear, KMonth, Channeltype, Group, LS, LevelType

How to fix "[Teradata][ODBC Teradata Driver][Teradata Database] Syntax error: ORDER BY is not allowed in subqueries." in tableau query

How to fix "[Teradata][ODBC Teradata Driver][Teradata Database] Syntax error: ORDER BY is not allowed in subqueries." in tableau query

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