AVERAGE TOTALYTD给出错误的结果。 Power BI DAX

Question

我只需要为Average Year To Date个索赔计算Closed。 如果我使用FILTER函数，那么它会给我正确的结果：$ 3,507.74

AVG_YTD_Indemn_Closed =
CALCULATE (
    AVERAGE ( fact_Losses[PaidIdemnity] ),
    FILTER (
        fact_Losses,
        fact_Losses[DateEntered].[Year] = YEAR ( TODAY () )
            && fact_Losses[ClaimStatus] = "Closed"
    )
)

但是，如果我使用TOTALYTD函数，由于某种原因，我会得到不同的结果$ 4,702.31：

AVG_YTD_Indemn_Closed1 =
CALCULATE (
    TOTALYTD ( AVERAGE ( fact_Losses[PaidIdemnity] ), dim_Date[Date] ),
    fact_Losses[ClaimStatus] = "Closed"
)

为什么会有如此大的差异？函数TOTALYTD如何计算与FILTER不同的结果？

Answer 1

如here所述，

TOTALYTD (
    <EXPRESSION>,
    <DATES>
    [, <FILTER>]
    [, <YEARENDDATE>]
)

等同于

CALCULATE (
    <EXPRESSION>,
    DATESYTD ( <DATES> [, <YEARENDDATE>] )
    [, <FILTER>]
)

因此，您的TOTALYTD度量等于

AVG_YTD_Indemn_Closed1 =
CALCULATE (
    CALCULATE(
        AVERAGE ( fact_Losses[PaidIdemnity] ),
        DATESYTD( dim_Date[Date] )
    ),
    fact_Losses[ClaimStatus] = "Closed"
)

如果理顺日期关系，我建议您使用此版本，因为TOTALYTD无法容纳将来可能需要的其他过滤器，如here所述：

AVG_YTD_Indemn_Closed1 =
CALCULATE (
    AVERAGE ( fact_Losses[PaidIdemnity] ),
    DATESYTD( dim_Date[Date] ),
    fact_Losses[ClaimStatus] = "Closed"
)