Reporting Services，在算術運算期間出錯

Question

我試圖在SQL Server Reporting Services中獲得兩個日期之間的差異。 我有離開日期，以及下一個到達日期。 我使用兩個iif來計算第一天的天數，以及第二iif來計算小時，分鍾和秒。

=iif(IsNothing(Fields!NextEnterDateTimeUtc.Value)=False,

Floor(DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value) / 86400)

& iif(Floor((DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value)) / 86400)=1," day ", " days ") & 

Format(DateAdd("s", DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value), "00:00:00"), "HH:mm:ss")

, "No data")

問題是，在計算之后，當沒有Fields！NextEnterDateTimeUtc.Value的數據時，出現以下錯誤： Expression The hidden value in the text "Textbox20.Paragraphs [0] .TextRuns [0]" contains an error: An overflow occurred during the arithmetic operation.

Answer 1

問題出在你的表情部分

DateAdd("s", DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value), "00:00:00")

Iif計算所有表達式，即使條件為假

您需要額外的Iif來始終為Dateadd返回有效值

   DateAdd("s", Iif(IsNothing(Fields!NextEnterDateTimeUtc.Value)=False,DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value),0)

以下是完整的表達方式

= iif(IsNothing(Fields!NextEnterDateTimeUtc.Value)=False,

Floor(DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value) / 86400)

& iif(Floor((DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value)) / 86400)=1," day ", " days ") & 

Format(DateAdd("s", Iif(IsNothing(Fields!NextEnterDateTimeUtc.Value)=False,DateDiff(DateInterval.Second, Fields!LeaveDateTimeUtc.Value, Fields!NextEnterDateTimeUtc.Value),0), "00:00:00"), "HH:mm:ss")

, "No data")