Syntax error in dynamic SQL string - sql

Question

Please help to fix the following syntax error with Like statement. The query works with = but I need to use Like to search in the AAchange field. I think the problem is here "WHERE [AAchange] LIKE '" & "%" & _
but I'm not sure how to correct this syntax. Please see the code below:
Sub ColorNewVariant()
Dim PolicyNum As Variant
Dim bFound As Boolean
Dim cnn As ADODB.Connection 'dim the ADO collection class
Dim rs As ADODB.Recordset 'dim the ADO recordset class
Dim dbPath As String
Dim strSQL As String
Dim r As Range, cell As Range
Dim LastRow As Long
LastRow = ActiveSheet.Range("A" & Rows.Count).End(xlUp).Row
Application.EnableEvents = False
Set r = ThisWorkbook.ActiveSheet.Range("G3:G" & LastRow)
For Each cell In r
If cell.Value <> "" Then
PolicyNum = cell.Value
dbPath = PATH_MAIN & "\Report\MDL_IonTorrent.accdb"
Set cnn = New ADODB.Connection ' Initialise the collection class variable
'Connection class is equipped with a -method- Named Open
'--4 aguments-- ConnectionString, UserID, Password, Options
'ConnectionString formula--Key1=Value1;Key2=Value2;Key_n=Value_n;
cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & dbPath
strSQL = "SELECT [AAchange] " & _
"FROM [MDL_Table1] " & _
"WHERE [AAchange] LIKE '" & "%" & _
Replace(PolicyNum, """", """""", , , vbTextCompare) & _
""""
'Create the ADODB recordset object.
Set rs = New ADODB.Recordset 'assign memory to the recordset
'ConnectionString Open '--5 aguments--
'Source, ActiveConnection, CursorType, LockType, Options
rs.Open strSQL, cnn
bFound = Not rs.EOF
'Check if the recordset is empty.
'Close the recordet and the connection.
rs.Close
cnn.Close
'clear memory
Set rs = Nothing
Set cnn = Nothing
'Enable the screen.
If bFound Then
'MsgBox "Record exists."
Else
'MsgBox "Record not found."
'cell.Interior.ColorIndex = 8
cell.Interior.Color = RGB(255, 217, 218)
'cell.ClearComments
'cell.AddComment "New Variant"
'Fits shape around text
'cell.Comment.Shape.TextFrame.AutoSize = True
End If
End If
Next cell
Application.EnableEvents = True
End Sub

Answer 1

Change the quoting in your query's WHERE clause.
If you use single quotes to start and end the string value you build, you needn't bother with Replace() of double quotes within the PolicyNum value. That should make this task simpler and less confusing ...
strSQL = "SELECT [AAchange] " & _
"FROM [MDL_Table1] " & _
"WHERE [AAchange] LIKE '%" & PolicyNum & "'"
Debug.Print strSQL