VBA Syntax error (missing operator) in query expression 'PopID =' - sql

Question

The following code throws an error when trying to run it, I presume I've managed to actually connect to the database and I have a cell selected so not sure what's missing.
ERROR:
Syntax error (missing operator) in query expression 'PopID ='.
Ideally I would like to be able to list four cells that would go into four columns in access appending each time the macro is ran
Const TARGET_DB = "testdb.accdb"
Sub AlterOneRecord() 'not working yet
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim fld As ADODB.Field
Dim MyConn
Dim lngRow As Long
Dim lngID As String
Dim j As Long
Dim sSQL As String
'determine the ID of the current record and define the SQL statement
lngRow = ActiveCell.Row
lngID = Cells(lngRow, 1).Value
sSQL = "SELECT * FROM tblPopulation WHERE PopID = " & lngID
Set cnn = New ADODB.Connection
MyConn = ThisWorkbook.path & Application.PathSeparator & TARGET_DB
With cnn
.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;"
.Open MyConn
End With
Set rst = New ADODB.Recordset
rst.CursorLocation = adUseServer
rst.Open Source:=sSQL, _
ActiveConnection:=cnn, _
CursorType:=adOpenKeyset, _
LockType:=adLockOptimistic
'Load contents of modified record from Excel to Access.
'do not load the ID again.
For j = 2 To 7
rst(Cells(1, j).Value) = Cells(lngRow, j).Value
Next j
rst.Update
' Close the connection
rst.Close
cnn.Close
Set rst = Nothing
Set cnn = Nothing
End Sub
I find it strange with them both being M$ products that this is not well documented or really really easy to perform. Maybe I'm going about it in the wrong way.
How could I make it contain cells A1 and B2 for example?

Answer 1

You need to quote strings
sSQL = "SELECT * FROM tblPopulation WHERE PopID = '" & lngID & "'"