我有三个 DMin，用于查找三列中的最小数字。唯一的问题是当我有一个空列时，它会返回空白。如何考虑空列？
这是我正在使用的代码。
Private Sub UpdatePriority_Click()
Dim MinGOPri As Variant
Dim MinSRPri As Variant
Dim MinSOPri As Variant
MinGOPri = DMin("[GOPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo")
MinSRPri = DMin("[StrPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo")
MinSOPri = DMin("[SOPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo")
Overal_Priority.Requery
Overal_Priority = IIf(((IIf([MinGOPri] < [MinSRPri], [MinGOPri], [MinSRPri])))
< [MinSOPri], ((IIf([MinGOPri] < [MinSRPri], [MinGOPri], [MinSRPri]))), [MinSOPri])
End Sub
最佳答案
当您希望找到三个中的最小值时，您可以在 DMin 为 Null 时插入一个“大于其他值”的值:
' Very large value.
Const Superior As Long = 9999
Dim MinGOPri As Variant
Dim MinSRPri As Variant
Dim MinSOPri As Variant
MinGOPri = Nz(DMin("[GOPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo"), Superior)
MinSRPri = Nz(DMin("[StrPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo"), Superior)
MinSOPri = Nz(DMin("[SOPri]", "[Projects]", "Projects.ProjNo = Activity.ProjNo"), Superior)
关于ms-access - 空列的 DMin，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30585489/