解决 Tableau 中 IF 结果的聚合和非聚合混合错误答案

【问题标题】：Resolve aggregate and Non-aggregate mix error for IF results in Tableau解决 Tableau 中 IF 结果的聚合和非聚合混合错误
【发布时间】：2017-10-24 22:10:08
【问题描述】：

我正在尝试在 Tableau 中执行以下操作。

如果选择的关键指标是销售额或销量（非聚合字段），则调用计算 1，否则调用计算 2。

IF ATTR([Choose Key Figure])= "Sales"
THEN [Periodic Calculation]
ELSEIF ATTR([Choose Key Figure])= "Volume"
THEN [Periodic Calculation]
ELSEIF ATTR([Choose Key Figure])="profit"
THEN [Periodic Calculation 2]
ELSEIF ATTR([Choose Key Figure])="price per unit"
THEN [Periodic Calculation 2]
END

但我收到以下错误： “不能混合聚合和非聚合比较或导致 'IF' 表达式。”

定期计算

IF [Choose Vol/NNS]="NNS"
AND [Choose Period]=-1
AND DATEDIFF("month",[Dates], [Choose Current Month])<2
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
then [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND    [Choose Period]=-1
AND DATEDIFF("month",[Dates], [Choose Current Month])<2
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
THEN [(Actuals + Planned) Volume]
ELSEIF [Choose Vol/NNS]="NNS"
AND [Choose Period]=-3
AND DATEDIFF("month",[Dates], [Choose Current Month])<4
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
then [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND [Choose Period]=-3
AND DATEDIFF("month",[Dates], [Choose Current Month])<4
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
THEN [(Actuals + Planned) Volume]
ELSEIF [Choose Vol/NNS]="NNS"
AND [Choose Period]=-6
AND DATEDIFF("month",[Dates], [Choose Current Month])<7
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
then [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND     [Choose Period]=-6
AND DATEDIFF("month",[Dates], [Choose Current Month])<7
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>0
THEN [(Actuals + Planned) Volume]
ELSEIF [Choose Vol/NNS]="NNS"
AND     [Choose Period]=1
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-2
THEN [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND     [Choose Period]=1
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-2
THEN [(Actuals + Planned) Volume]
ELSEIF [Choose Vol/NNS]="NNS"
AND     [Choose Period]=3
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-4
THEN [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND     [Choose Period]=3
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-4
THEN [(Actuals + Planned) Volume]
ELSEIF [Choose Vol/NNS]="NNS"
AND     [Choose Period]=6
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-7
THEN [(Actuals+Planned) NNS]
ELSEIF [Choose Vol/NNS]="Volume"
AND     [Choose Period]=6
AND DATEDIFF("month",[Dates], [Choose Current Month])<0
AND
DATEDIFF("month",[Dates],[Choose Current Month] )>-7
THEN [(Actuals + Planned) Volume]

结束

周期计算 2

IF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=-1
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<2
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=-1
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<2
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) IGM$]
ELSEIF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=-3
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<4
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=-3
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<4
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) IGM$]
ELSEIF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=-6
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<7
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=-6
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<7
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>0
THEN [(Actuals + Planned) IGM$]
ELSEIF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=1
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-2
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=1
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-2
THEN [(Actuals + Planned) IGM$]
ELSEIF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=3
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-4
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=3
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-4
THEN [(Actuals + Planned) IGM$]
ELSEIF [Choose IGM$/NNSP]="NNSP"
AND [Choose Period]=6
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-7
THEN [(Actuals + Planned) NNSP]
ELSEIF [Choose IGM$/NNSP]="IGM$"
AND [Choose Period]=6
AND ATTR(DATEDIFF("month",[Dates], [Choose Current Month]))<0
and ATTR(DATEDIFF("month",[Dates],[Choose Current Month] ))>-7
THEN [(Actuals + Planned) IGM$]
END

谁能帮助解决这个错误？

谢谢。

【问题讨论】：

标签： if-statement error-handling aggregate-functions tableau-api

【解决方案1】：

如果 [Choose Key Figure] 是一个参数，而 [Periodic Calculation] 和 [Periodic Calculation 2] 是行级别（非聚合）计算，那么您可以：

删除计算字段中对 ATTR() 的所有调用或
删除对 ATTR() 的所有调用，并在每次引用 [Periodic Calculation] 或 [Periodic Calculation 2] 时调用聚合函数，例如 SUM() 或
保留对 ATTR() 的调用，并在每次引用 [Periodic Calculation] 或 [Periodic Calculation 2] 时调用聚合函数，例如 SUM()

1 和 2 的区别在于是在计算中还是在使用它的 Tableau 工作簿书架中为计算字段指定聚合函数。

在这种情况下没有真正的理由选择第三种方法，因为参数一次只能有一个值，所以 ATTR() 调用没有用。

【讨论】：