find and replace values in database using an array VBA - arrays

Question

I have a dirty database where the names of each individual are written in different ways and I cannot group them.
I would like to create a macro to find and replace the names in the database using a two column list.
I have found the following code, but I´m having trouble understanding it, so cannot adapt it:
Dim Sht As Worksheet
Dim fndList As Integer
Dim rplcList As Integer
Dim tbl As ListObject
Dim myArray As Variant
Dim Rng As Range
'Create variable to point to your table
Set tbl = Worksheets("How to").ListObjects("Table2")
'Create an Array out of the Table's Data
Set TempArray = tbl.DataBodyRange
myArray = Application.Transpose(TempArray)
'Designate Columns for Find/Replace data
fndList = 1
rplcList = 2
'Loop through each item in Array lists
For x = LBound(myArray, 1) To UBound(myArray, 2)
'Loop through each worksheet in ActiveWorkbook (skip sheet with table in it)
For Each Rng In Worksheets("xxxxxxxxxx").Activate
If Rng.Name <> tbl.Parent.Name Then
Rng.Cells.replace What:=myArray(fndList, x), Replacement:=myArray(rplcList, x), _
LookAt:=xlPart, SearchOrder:=xlByRows, MatchCase:=False, _
SearchFormat:=False, ReplaceFormat:=False
End If
Next Rng
Next x
End Sub

Answer 1

I have adjusted your code which you can see below; couple notes:
1- Using Option Explicit is always a good idea
2- If you put the array loop inside the sheet loop, you only have to perform the sheet name check n times (n=number of sheets in workbook), if you put the sheet loop inside the array loop you would have to perform the sheet name check n*x times (x = number of items in your array)...
3- You didn't specify, but I assumed that your Table1 was structured vertically with the lookup value in the first column and the replacement value in the 2nd- so there is no need to transpose your array; if your Table1 is in fact horizontal then you would need to adjust this code...
Public Sub demoCode()
Dim sheetName As String
Dim tableRange As Range
Dim myArray() As Variant
Dim wsCounter As Long
Dim rowCounter As Long
'Store name of sheet with lookup table
sheetName = "How to"
'Create an Array out of the Table's Data
Set tableRange = ThisWorkbook.Sheets(sheetName).ListObjects("Table1").DataBodyRange
myArray = tableRange
'Loop through each sheet
For wsCounter = 1 To ThisWorkbook.Sheets.Count
With ThisWorkbook.Sheets(wsCounter)
'Test to make sure the sheet is not the sheet with the lookup table
If .Name <> sheetName Then
'Loop through each item in lookup table
For rowCounter = LBound(myArray, 1) To UBound(myArray, 1)
'Replace any cells that contain whats in the first column of the lookup table, with whats in the 2nd column..
.Cells.Replace What:=myArray(rowCounter, 1), Replacement:=myArray(rowCounter, 2), LookAt:=xlPart, SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
Next
End If
End With
Next
End Sub
Hope this helps,
TheSilkCode

Answer 2

so to answer your second question, basically what you would need to do is remove the sheet loop (which you have done), and then the part you're missing is you also need to specify you want the code to perform the replace on just the cells within the target range, instead of performing it on the cells within the sheet (which would be all the cells)... see below for example:
Public Sub demoCode_v2()
Dim tableRange As Range
Dim myArray() As Variant
Dim rowCounter As Long
Dim targetRange As Range
'Create an Array out of the Table's Data
Set tableRange = ThisWorkbook.Sheets(sheetName).ListObjects("Table1").DataBodyRange
myArray = tableRange
'Select target range
Set targetRange = Application.InputBox("Select target range:", Type:=8)
'Loop through each item in lookup table
For rowCounter = LBound(myArray, 1) To UBound(myArray, 1)
'Replace any cells in target range that contain whats in the first column of the lookup table, with whats in the 2nd column..
targetRange.Cells.Replace What:=myArray(rowCounter, 1), Replacement:=myArray(rowCounter, 2), LookAt:=xlPart, SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
Next
End Sub
Hope this helps,
TheSilkCode

Answer 3

Using a slight adjustment of TheSilkCode code you could loop through a worksheet as follows:
Option Explicit
Public Sub pDemo()
Dim vMappingTable() As Variant
Dim rowCounter As Long
'1) Create an Array out of the Old to New Name mapping
vMappingTable = wksMappings.ListObjects("tbl_Mapping").DataBodyRange
'2) Loops through desired sheet and replaces any cells that contain the first column val, with the 2nd column val...
With wksToReplace.Range("X:X")
For rowCounter = LBound(vMappingTable, 1) To UBound(vMappingTable, 1)
.Cells.Replace What:=vMappingTable(rowCounter, 1), Replacement:=vMappingTable(rowCounter, 2), LookAt:=xlPart, SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
Next
End With
End Sub
Note: you can define names of table via the Name manager (Ctrl+F3) and you can set the name of worksheets in your project in the properties in the VBA editor which I have done here or use the default names/and or path.