code: def __add_query_comment(sql):
          
          # Inspect the call stack for the originating call
          file_name = ''
          line_number = ''
          caller_frames = inspect.getouterframes(inspect.currentframe())
          for frame in caller_frames:
              if "ShapewaysDb" not in frame[1]:
                  file_name = frame[1]
                  line_number = str(frame[2])
                  break
  
          comment = "/*COYOTE: Q_SRC: {file}:{line} */\n".format(file=file_name, line=line_number)
          return comment + sql,
docs: Adds a comment line to the query to be executed containing the line number of the calling
          function.  This is useful for debugging slow queries, as the comment will show in the slow
          query log
  
          @type sql: str
          @param sql: sql needing comment
          @return: