访问 2013 年总和时间值答案

【问题标题】：Access 2013 Sum time values访问 2013 年总和时间值
【发布时间】：2015-05-29 22:36:35
【问题描述】：

Access 2013中如何求时间值的总和？

我的专栏是这样的：（感谢@HansUp 用户！）

SELECT t.[Time From],
       t.[Time Until],
       Format((t.[Time Until] - t.[Time From]), 'h:nn') AS [Total],
       Format(#08:00# - (t.[Time Until] - t.[Time From]), 'h:nn') AS [Missing]
FROM tblVolkan AS t;

我怎样才能在不出错的情况下计算 Missing 的总和？

【问题讨论】：

标签： ms-access ms-access-2013

【解决方案1】：

您只需将时间跨度相加：

SELECT 
    Sum([Time Until] - [Time From]) AS [SumTotal],
    Sum(#08:00# - ([Time Until] - [Time From])) AS [SumMissing]
FROM 
    tblVolkan;

如果总数可以超过 24 小时，并且您希望显示小时：分钟，请使用以下功能：

SELECT 
    FormatHourMinute(Sum([Time Until] - [Time From])) AS [SumTotal],
    FormatHourMinute(Sum(#08:00# - [Time Until] - [Time From])) AS [SumMissing]
FROM 
    tblVolkan;

Public Function FormatHourMinute( _
  ByVal datTime As Date, _
  Optional ByVal strSeparator As String = ":") _
  As String

' Returns count of days, hours and minutes of datTime
' converted to hours and minutes as a formatted string
' with an optional choice of time separator.
'
' Example:
'   datTime: #10:03# + #20:01#
'   returns: 30:04
'
' 2005-02-05. Cactus Data ApS, CPH.

  Dim strHour       As String
  Dim strMinute     As String
  Dim strHourMinute As String

  strHour = CStr(Fix(datTime) * 24 + Hour(datTime))
  ' Add leading zero to minute count when needed.
  strMinute = Right("0" & CStr(Minute(datTime)), 2)
  strHourMinute = strHour & strSeparator & strMinute

  FormatHourMinute = strHourMinute

End Function

【讨论】：