正如标题所说,是否有任何函数或VBA代码可以执行与countif相同的功能,且速度更快。当前正在执行大量的countif操作,而且它只是消耗我的CPU。
这只是工作表中的基本countif。而不是在VBA中。
=countif(X:X,Y)
然而列表非常庞大。因此,两个列表大约有100,000个行。
=ISNUMBER(MATCH(S1, Y:Y, 0))
根据需要填充以捕捉所有回报。对返回的值进行排序和/或筛选,以制表结果。
附加说明:
显然是有的。MATCH函数计算时间大幅提高,比COUNTIF函数更快,这让我想知道是否可以将MATCH放入循环中,将其lookup_array参数中的第一个单元格前进到先前返回的行号加一,直到没有更多匹配为止。此外,后续的MATCh调用来查找相同的数字(增加计数)也可以通过调整列的高度来缩小lookup_array单元格范围,并随着返回的行数而逐渐变小。如果处理的值及其计数被存储为脚本字典中的键和项,则可以立即解决重复值,而无需处理计数。
Sub formula_countif_test()
Dim tmr As Double
appOFF
tmr = Timer
With Sheet2.Cells(1, 1).CurrentRegion
With .Offset(1, 0).Resize(.Rows.Count - 1, .Columns.Count) 'skip header
.Cells(1, 3).Resize(.Rows.Count, 1).FormulaR1C1 = _
"=countif(c1, rc2)" 'no need for calculate when blocking in formulas like this
End With
End With
Debug.Print "COUNTIF formula: " & Timer - tmr
appON
End Sub
Sub formula_match_test()
Dim rw As Long, mrw As Long, tmr As Double, vKEY As Variant
'the following requires Tools, References, Microsoft Scripting Dictionary
Dim dVALs As New Scripting.dictionary
dVALs.CompareMode = vbBinaryCompare 'vbtextcompare for non-case sensitive
appOFF
tmr = Timer
With Sheet2.Cells(1, 1).CurrentRegion
With .Offset(1, 0).Resize(.Rows.Count - 1, .Columns.Count) 'skip header
For rw = 1 To .Rows.Count
vKEY = .Cells(rw, 2).Value2
If Not dVALs.Exists(vKEY) Then
dVALs.Add Key:=vKEY, _
Item:=Abs(IsNumeric(Application.Match(vKEY, .Columns(1), 0)))
If CBool(dVALs.Item(vKEY)) Then
mrw = 0: dVALs.Item(vKEY) = 0
Do While IsNumeric(Application.Match(vKEY, .Columns(1).Offset(mrw, 0).Resize(.Rows.Count - mrw + 1, 1), 0))
mrw = mrw + Application.Match(vKEY, .Columns(1).Offset(mrw, 0).Resize(.Rows.Count - mrw + 1, 1), 0)
dVALs.Item(vKEY) = CLng(dVALs.Item(vKEY)) + 1
Loop
End If
.Cells(rw, 3) = CLng(dVALs.Item(vKEY))
Else
.Cells(rw, 3) = CLng(dVALs.Item(vKEY))
End If
Next rw
End With
End With
Debug.Print "MATCH formula: " & Timer - tmr
dVALs.RemoveAll: Set dVALs = Nothing
appON
End Sub
Sub appON(Optional ws As Worksheet)
Application.ScreenUpdating = True
Application.EnableEvents = True
Application.Calculation = xlCalculationAutomatic
End Sub
Sub appOFF(Optional ws As Worksheet)
Application.ScreenUpdating = False
Application.EnableEvents = False
Application.Calculation = xlCalculationManual
End Sub
我使用了10K行,A列和B列填充了
RANDBETWEEN(1, 999)
,然后复制并粘贴为值。在排序数据后,COUNTIF有一个简单的解决方法。您可以将此添加到您的VB脚本中并运行。对于大约1万行项目的数据,普通的COUNTIF需要近10-15分钟。这个脚本将在小于10秒内获取计数。
Sub alternateFunctionForCountIF()
Dim DS As Worksheet
Set DS = ThisWorkbook.ActiveSheet
Dim lcol As Integer
lcol = DS.Cells(1, Columns.Count).End(xlToLeft).Column
Dim fieldHeader As String
Dim lrow As Long, i As Long, j As Long
Dim countifCol As Integer, fieldCol As Integer
fieldHeader = InputBox("Enter the column header to apply COUNTIF")
If Len(fieldHeader) = 0 Then
MsgBox ("Invalid input. " & Chr(13) & "Please enter the column header text and try again")
Exit Sub
End If
For i = 1 To lcol
If fieldHeader = DS.Cells(1, i).Value Then
fieldCol = i
Exit For
End If
Next i
If fieldCol = 0 Then
MsgBox (fieldHeader & " could not be found among the headers. Please enter a valid column header")
Exit Sub
End If
countifCol = fieldCol + 1
lrow = DS.Cells(Rows.Count, "A").End(xlUp).Row
DS.Range(DS.Cells(1, countifCol).EntireColumn, DS.Cells(1, countifCol).EntireColumn).Insert
DS.Cells(1, countifCol) = fieldHeader & "_count"
DS.Sort.SortFields.Clear
DS.Sort.SortFields.Add Key:=Range(DS.Cells(2, fieldCol), DS.Cells(lrow, fieldCol)), SortOn:=xlSortOnValues, Order:=xlAscending, DataOption:=xlSortNormal
With DS.Sort
.SetRange Range(DS.Cells(1, 1), DS.Cells(lrow, lcol))
.header = xlYes
.MatchCase = False
.Orientation = xlTopToBottom
.SortMethod = xlPinYin
.Apply
End With
Dim startPos As Long, endPos As Long
Dim checkText As String
For i = 2 To lrow
checkText = LCase(CStr(DS.Cells(i, fieldCol).Value))
If (checkText <> LCase(CStr(DS.Cells(i - 1, fieldCol).Value))) Then
startPos = i
End If
If (checkText <> LCase(CStr(DS.Cells(i + 1, fieldCol).Value))) Then
endPos = i
For j = startPos To endPos
DS.Cells(j, countifCol) = endPos - startPos + 1
Next j
End If
Next i
MsgBox ("Done")
End Sub
sumproduct(countif(x:x,y:y))
,这样会稍微快一些,但具体快多少我不确定。
=countif(X:X,y)
。但是列表非常庞大。 - Sam