SQL Table Editor column value other than the bound column

Set the Bound column to a column that is a unique identifier for the data record.   Then in the business rule use that unique identifier and SQL to lookup the other fields/values that you need for that record.

Then in your rule, use something like the following to get the row (assuming its always one row) that has the value in it you're looking for:

Dim uniqueID As String = args.NameValuePairs.XFGetValue("UniqueID", String.Empty)
Dim lstEditedDataRows As List(Of XFEditedDataRows) =  args.SqlTableEditorSaveDataTaskInfo.EditedDataRows
Dim btnClickUserRow As XFEditedDataRow = lstEditedDataRows.Where(Function(row)row.ModifiedDataRow.Item("UniqueID").Equals(uniqueID)).ToList().First()