Power BI中帶有日期的DAX條件公式

Question

我有幾個帶有日期的列（在PBI建模中格式化為日期）。 每列代表一個階段（“開始”-“完成”），我需要一個新列來顯示每行處於哪個階段。

到目前為止，我有這個：

Procurement Stage = IF(Milestones[Close Project]<>"1/01/1900","Close 
Project",IF(Milestones[Enable The Contract]<>"1/01/1900","Enable The 
Contract",IF(Milestones[Award Contract]<>"1/01/1900","Award 
Contract",IF(Milestones[Recommend Offer]<>"1/01/1900","Recommend 
Offer",IF(Milestones[Evaluate Offers]<>"1/01/1900","Evaluate 
Offers",IF(Milestones[Implement Strategy]<>"1/01/1900","Implement 
Strategy",If(Milestones[Strategy Approval]<>"1/01/1900","Strategy 
Approval",IF(Milestones[Conduct Analysis]<>"1/01/1900","Conduct 
Analysis",IF(Milestones[Initiate Project]<>"1/01/1900","Initiate Project","Not 
Yet Started")))))))))

它帶有以下錯誤：

DAX比較操作不支持將日期類型的值與文本類型的值進行比較。 考慮使用VALUE或FORMAT函數轉換值之一。

我已仔細檢查並確保所有列都采用相同的格式-日期。

有人能幫忙嗎？

我需要在建模中完成此操作，因此我需要在DAX中完成此操作。

謝謝。

葉夫根尼·

Answer 1

嘗試：

Procurement Stage =
VAR My_Date = DATE ( 1900, 1, 1 )
RETURN
    SWITCH (
        TRUE(),
        Milestones[Close Project] <> My_Date, "Close Project",
        Milestones[Enable The Contract] <> My_Date, "Enable The Contract",
        Milestones[Award Contract] <> My_Date, "Award Contract",
        Milestones[Recommend Offer] <> My_Date, "Recommend Offer",
        Milestones[Evaluate Offers] <> My_Date, "Evaluate Offer",
        Milestones[Implement Strategy] <> My_Date, "Implement Strategy",
        Milestones[Strategy Approval] <> My_Date, "Strategy Approval",
        Milestones[Conduct Analysis] <> My_Date, "Conduct Analysis",
        Milestones[Initiate Project] <> My_Date, "Initiate Project",
        "Not Yet Started"
    )