Vba 如何基于多个条件获取行?
我试图在工作表中搜索前3列中的值与一组3个条件匹配的行。我使用的是线性搜索:Vba 如何基于多个条件获取行?,vba,excel,Vba,Excel,我试图在工作表中搜索前3列中的值与一组3个条件匹配的行。我使用的是线性搜索: Function findRow(pName as string,fNo as string,mType as string) As Long Dim rowCtr As Long rowCtr = 2 While Not rowMatchesCriteria(rowCtr, pName,fNo,mType) rowCtr = rowCtr + 1 Wend findRow=rowCtr End Func
Function findRow(pName as string,fNo as string,mType as string) As Long
Dim rowCtr As Long
rowCtr = 2
While Not rowMatchesCriteria(rowCtr, pName,fNo,mType)
rowCtr = rowCtr + 1
Wend
findRow=rowCtr
End Function
Function rowMatchesCriteria(row As Long, pName As String, fNo As String, mType As String) As Boolean
rowMatchesCriteria = dSheet.Cells(row,1)=pName _
And dSheet.Cells(row,2)=fNo _
And dSheet.Cells(row,3)=mType
End Function
我们可以假设,对于任何3个标准,只有一个匹配项。然而,这是非常缓慢的<代码>数据表有大约35000个条目要搜索,我需要执行大约400000个搜索
我查看了中的一些解决方案,虽然我确信使用AutoFilter或advanced会比线性搜索更快,但我不知道如何获取筛选器返回的行的索引。我想要的是:
Sub makeUpdate(c1 as string,c2 as string,c3 as string)
Dim result as long
result = findRow(c1,c2,c3)
dSheet.Cells(result,updateColumn) = someUpdateValue
End Sub
应用自动筛选后,如何返回我要查找的
结果
行?如果要精确查找3列,可以使用VLOOKUP,使用一个小技巧:基于3列创建一个键。例如,如果要对B、C、D列执行查询,请根据三列(例如=B1、C1和D1)在a中创建一个键列。然后:
应该可以做到这一点。对于性能,您很难击败基于词典的查找表:
Sub FindMatches()
Dim d As Object, rw As Range, k, t
Dim arr, arrOut, nR, n
t = Timer
'create the row map (40k rows)
Set d = GetRowLookup(Sheets("Sheet1").Range("A2:C40001"))
Debug.Print Timer - t, "map"
t = Timer
'run lookups on the row map
'(same values I used to create the map, but randomly-sorted)
For Each rw In Sheets("sheet2").Range("A2:C480000").Rows
k = GetKey(rw)
If d.exists(k) Then rw.Cells(3).Offset(0, 1).Value = d(k)
Next rw
Debug.Print Timer - t, "slow version"
t = Timer
'run lookups again - faster version
arr = Sheets("sheet2").Range("A2:C480000").Value
nR = UBound(arr, 1)
ReDim arrOut(1 To nR, 1 To 1)
For n = 1 To nR
k = arr(n, 1) & Chr(0) & arr(n, 2) & Chr(0) & arr(n, 3)
If d.exists(k) Then arrOut(n, 1) = d(k)
Next n
Sheets("sheet2").Range("D2").Resize(nR, 1).Value = arrOut
Debug.Print Timer - t, "fast version"
End Sub
'create a dictionary lookup based on three column values
Function GetRowLookup(rng As Range)
Dim d As Object, k, rw As Range
Set d = CreateObject("scripting.dictionary")
For Each rw In rng.Rows
k = GetKey(rw)
d.Add k, rw.Cells(1).Row 'not checking for duplicates!
Next rw
Set GetRowLookup = d
End Function
'create a key from a given row
Function GetKey(rw As Range)
GetKey = rw.Cells(1).Value & Chr(0) & rw.Cells(2).Value & _
Chr(0) & rw.Cells(3).Value
End Function
一个简单的解决方案是使用excel函数匹配作为数组公式。 每个循环都没有,所以我想这可能运行得很快 公式将类似于此匹配(“A”和“B”和“C”,范围1和范围2和范围3,0) 输出:在第[4]行找到A、B、C
为了改进最佳答案(多条件搜索),您需要检查重复项以避免错误
'create a dictionary lookup based on three column values
Function GetRowLookup(rng As Range)
Dim d As Object, k, rw As Range
Set d = CreateObject("scripting.dictionary")
For Each rw In rng.Rows
k = GetKey(rw)
if not d.exists(k) then
d.Add k, rw.Cells(1).Row 'checking for duplicates!
end if
Next rw
Set GetRowLookup = d
End Function
看看我的回答:@simoco,
SpecialCells(xlCellTypeVisible)
就是我所想的。谢谢你的链接。
Option Explicit
Private Const FORMULA_TEMPLATE As String = _
"=MATCH(""CRITERIA_1""&""CRITERIA_2""&""CRITERIA_3"",RANGE_1&RANGE_2&RANGE_3,MATCH_TYPE)"
Private Const EXACT_MATCH = 0
Sub test()
Dim result
result = findRow("A", "B", "C")
Debug.Print "A,B,C was found on row : [" & result & "]"
End Sub
Function findRow(pName As String, fNo As String, mType As String) As Long
On Error GoTo Err_Handler
Dim originalReferenceStyle
originalReferenceStyle = Application.ReferenceStyle
Application.ReferenceStyle = xlR1C1
Dim data As Range
Set data = ActiveSheet.UsedRange
Dim formula As String
' Add criteria
formula = Replace(FORMULA_TEMPLATE, "CRITERIA_1", pName)
formula = Replace(formula, "CRITERIA_2", fNo)
formula = Replace(formula, "CRITERIA_3", mType)
' Add ranges where search
formula = Replace(formula, "RANGE_1", data.Columns(1).Address(ReferenceStyle:=xlR1C1))
formula = Replace(formula, "RANGE_2", data.Columns(2).Address(ReferenceStyle:=xlR1C1))
formula = Replace(formula, "RANGE_3", data.Columns(3).Address(ReferenceStyle:=xlR1C1))
' Add match type
formula = Replace(formula, "MATCH_TYPE", EXACT_MATCH)
' Get formula result
findRow = Application.Evaluate(formula)
Err_Handler:
' Set reference style back
Application.ReferenceStyle = originalReferenceStyle
End Function
'create a dictionary lookup based on three column values
Function GetRowLookup(rng As Range)
Dim d As Object, k, rw As Range
Set d = CreateObject("scripting.dictionary")
For Each rw In rng.Rows
k = GetKey(rw)
if not d.exists(k) then
d.Add k, rw.Cells(1).Row 'checking for duplicates!
end if
Next rw
Set GetRowLookup = d
End Function