a macro that select one by one a string from a column and compare with another column....?

i need a macro that select one by one (from cells of column "B" in a sheet called "BIC" ) a string and compare with another cells of data in another column "F" that is in another sheet called "DFG"
and replace the cells of the "F" column on "DFG" with cells of another column "A" in a sheet called "BIC"
 "A"  & "B" column on sheet "BIC" &       "F" on sheet "DFG"      final result sheet"DFG"
10............      A.C.RYAN ............................... ACER ..................................   15
15 ...........      ACER......................................  AEE     ...............................   25
20 ..........       ADJ ....................................... FGHJ ...................................     ?
25...........      AEE ......................................  AEG  ..................................   30
30...........      AEG  ..................................... AEG   .................................   30
35...........      AIRTIES  ................................ JHGF .................................   45
40..........   ERTYU  ...............................  AIRTIES ................................35
45............ JHGF   ....................................AEG       ................................ 30
 ..............................................................ERTYU  ..............................  40
 ...............................................................ADJ                                       20

MACRO STOP WHEN FINDS EMPTY CELL IN  "B" COLUMN IN "BIC" SHEET
SUMMARY 1 WORKSHEET , 2 SHEETS , 3 COLUMNS FOR SYNC,COMPARE, REPLACE , 5000 ROWS OF DATA

THANKS EVERYBODY THAT HELPS
tonyantonyAsked:
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Robberbaron (robr)Connect With a Mentor Commented:
Sub FixRef1()
    
    Dim rSrc As Range
    Dim rDest As Range
    'THIS IS SLOW WAY OF DOING IT
    'but ok for a one off
    
    Set rSrc = Worksheets("BIC").Range("B1") '<<hardcoded
    
    Do While rSrc.Value <> ""
        'proces the dest column
        Set rDest = Worksheets("DFG").Range("F1")  '<<hardcoded
        
        Do While rDest.Value <> ""
            If rDest.Value = rSrc.Value Then
                'replace with code number from column to left
                rDest.Value = rSrc.Offset(0, -1).Value
            End If
            Set rDest = rDest.Offset(1, 0)  'the next row of dest
        Loop
        
        Set rSrc = rSrc.Offset(1, 0)  'the next row
    Loop

End Sub

Open in new window

update-codenum.xls
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Robberbaron (robr)Commented:
yes this should be easy enough but please upload a sample workbook as it may be a lot easier to use a lookup.

is sheet(BIC) column B always sorted alphabetically ?

How do you tell the end of columns in sheet(DFG)
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tonyantonyAuthor Commented:
my best ,in 10 seconds i finish 3hours , many thanks
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