VBA - to compare 2 tables from 2 sheets, and get result in another sheets creating comparison table - vba

Question

It is above my possibilities.
I know how to create Vba code with Vlookup or Hlookup for single comparision. However whatIi am trying is beyond my knowledge.
I need to compare 2 tables. 1st is requirements where 2nd is DB extract.
Both tables contains same "Action" column and other columns with Employer role as a header. Values from Action column for both tables are the same however in different order ( Those values need to act as primary key).
Columns with Employer role as a header - same header value for both tables - however columns in different order.
Amount of columns with Employer role as a header is not constants and it gets change every time I get this files. Those columns in extract are in different order than in requirements.
Amount of values from "Action" columns ( primary key) also not constants and change every time I receive files. So I cannot set specific range.
Example of Requirements table
Example of Extract table
Example of what is expected
New target worksheet need to be created where Comparison table will be created.
VBA to create Comparison table in newly created worksheet.
This table should have "Action" column + all columns with Employers role as header form requirements + all columns with Employers role as header form extract set in same order like columns in requirements + comparison table which compare values between Employers roles from Requirements and Extract and show values YES or NO

Answer 1

Try the next code, please. It will return in a newly created sheet (after the last existing). The new file is named "New Sheet". If it exists, it is cleared and reused:
Sub testMatchTables()
Dim sh As Worksheet, sh1 As Worksheet, shNew As Worksheet
Dim tbl1 As ListObject, tbl2 As ListObject, rightH As Long
Dim arrR, arrE, arrH1, arrH2, arrFin, i As Long, j As Long, k As Long
Dim first As Long, sec As Long, refFirst As Long, refSec As Long
Set sh = Set sh = Worksheets("Requirements")'use here the sheet keeping the first table
Set sh1 = Worksheets("Extract Table") 'use here your appropriate sheet
Set tbl1 = sh.ListObjects(1) 'use here your first table name (instead of 1)
Set tbl2 = sh1.ListObjects(1) 'use here your second table name (instead of 1)
arrR = tbl1.Range.value 'put the table range in an array
arrE = tbl2.Range.value 'put the table range in an array
'working with arrays will condiderably increase the processing speed
ReDim arrFin(1 To UBound(arrR), 1 To UBound(arrR, 2) * 3 + 2) 'redim the array to keep the processing result
'UBound is a property telling the number of array elements
arrH1 = Application.Index(arrR, 1, 0) 'make a slice in the array (1D array), the first row, which keeps the headers
arrH2 = Application.Index(arrE, 1, 0) 'make a slice in the array (1D array), the first row, which keeps the headers
'build the column headers:
For i = 1 To UBound(arrFin, 2)
If i <= UBound(arrH1) Then 'firstly the headers of the first table are filled in the final array
arrFin(1, i) = arrH1(i)
ElseIf refSec = 0 Then 'refSec is the column where a blanck column will exist
first = first + 1 'the code incrementes this variable to allow making empty only for the following row
If first = 1 Then
arrFin(1, i) = Empty: refFirst = i 'make the empty column between the two tables data and create a reference
'to be decreated from the already incremented i variable
Else
arrFin(1, i) = arrH1(i - refFirst) 'place each header column values
If i - refFirst = UBound(arrH1) Then refSec = i + 1 'when the code reaches the end of the first array
'it creates a reference for referencing the second time
End If
Else
sec = sec + 1 'the same philosophy as above, to create the second empty column
If sec = 1 Then
arrFin(1, i) = Empty 'create the empty column (for each processed row)
Else
arrFin(1, i) = arrH1(i - refSec) 'fill the header columns
End If
End If
Next
Dim C As Long, r As Long, eT As Long, T As Long
eT = UBound(arrR) 'mark the ending of the first array (where to be the first empty column)
T = UBound(arrR, 2) * 2 + 2 'mark the begining of the third final array part
'after the second empty column
For i = 2 To UBound(arrR) 'iterating between the first array rows
For j = 2 To UBound(arrE) 'iterating the second array rows
If arrR(i, 1) = arrE(j, 1) Then 'if the both arrays first column matches
arrFin(i, 1) = arrR(i, 1): arrFin(i, T + 1) = arrR(i, 1) 'put the Action values in the first area columns
arrFin(i, eT) = arrR(i, 1) 'put the Action values in the last area column
For C = 2 To UBound(arrR, 2) 'iterate between the array columns
rightH = Application.match(arrR(1, C), arrH2, 0) 'find the match of the first array header in the second one
arrFin(i, C) = arrR(i, C): arrFin(i, C + eT - 1) = arrE(j, rightH) 'place the matching header in the final array
If arrR(i, C) = arrE(j, rightH) Then
arrFin(i, T + C) = "TRUE" 'place 'TRUE' in case of matching
Else
arrFin(i, T + C) = "FALSE" 'place 'FALSE' in case of NOT matching
End If
Next C
End If
Next j
Next i
On Error Resume Next 'necessary to return an error if worksheet "New Sheet" does not exist
Set shNew = Worksheets("New Sheet")
If err.Number = 9 Then 'if it raises error number 9, this means that the sheet does not exist
err.Clear: On Error GoTo 0 'clear the error and make the code to return other errors, if any
Set shNew = Worksheets.Add(After:=Worksheets(Worksheets.count)) 'set shNew as new inserted sheet
shNew.name = "New Sheet" 'name the newly inserted sheet
Else
shNew.cells.Clear: On Error GoTo 0 ' in case of sheet exists, it is clear and the code is made to return errors
End If
'set the range where the final array to drop its values:
With shNew.Range("A1").Resize(UBound(arrFin), UBound(arrFin, 2))
.value = arrFin 'drop the array content
.EntireColumn.AutoFit 'AutoFit the involved columns
End With
End Sub
Please, test it and send some feedback.
Edited:
I commented the code as detailed I could. If still something unclear, please do not hesitate to ask for clarifications.