如果在Excel中找到区分大小写的重复项(对于100k或更多记录),如何删除整行？

Question

这是一个跟进的问题,如何删除Excel中的情况敏感的重复项(对于100k或更多记录)？ .

由于他的代码过程只处理A 列的数据,如果找到区分大小写的副本,我还想删除整行数据.

区分大小写:

1. 情况1
2. 情况1
3. 情况1

都是独特的记录.

Answer 1

您可以使用a Dictionary检查二进制唯一性和变量数组以加快速度.要使用字典,您需要包含对Microsoft Scripting Runtime Library的引用

(工具>参考> Microsoft Scripting Runtime库)

我用100,000行测试了这个,平均0.25秒在我的笔记本电脑上.

Sub RemoveDuplicateRows()
    Dim data As Range
    Set data = ThisWorkbook.Worksheets("Sheet1").UsedRange

    Dim v As Variant, tags As Variant
    v = data
    ReDim tags(1 To UBound(v), 1 To 1)
    tags(1, 1) = 0 'keep the header

    Dim dict As Dictionary
    Set dict = New Dictionary
    dict.CompareMode = BinaryCompare

    Dim i As Long
    For i = LBound(v, 1) To UBound(v, 1)
        With dict
            If Not .Exists(v(i, 1)) Then 'v(i,1) comparing the values in the first column 
                tags(i, 1) = i
                .Add Key:=v(i, 1), Item:=vbNullString
            End If
        End With
    Next i

    Dim rngTags As Range
    Set rngTags = data.Columns(data.Columns.count + 1)
    rngTags.Value = tags

    Union(data, rngTags).Sort key1:=rngTags, Orientation:=xlTopToBottom, Header:=xlYes

    Dim count As Long
    count = rngTags.End(xlDown).Row

    rngTags.EntireColumn.Delete
    data.Resize(UBound(v, 1) - count + 1).Offset(count).EntireRow.Delete
End Sub

基于这个问题的精彩答案