code: def _transform_local_field_to_expression(expression, node, context):
      
      column_name = expression.field_name
      column = sql_context_helpers.get_column(column_name, node, context)
      return column
docs: Transform a LocalField compiler expression into its SQLAlchemy expression representation.
  
      Args:
          expression: expression, LocalField compiler expression.
          node: SqlNode, the SqlNode the expression applies to.
          context: CompilationContext, global compilation state and metadata.
  
      Returns:
          Expression, SQLAlchemy expression.