docs: def show_info(self):
          """Print info about found delta files and about already made upgrades"""
  
          deltas = self.__get_delta_files()
  
          table = [['Version', 'Name', 'Type', 'Status']]
  
          for dir_ in deltas:
              print('delta files in dir: ', dir_)
  
              for delta in deltas[dir_]:
                  line = [delta.get_version(), delta.get_name()]
                  if delta.get_type() == DeltaType.PRE_PYTHON:
                      line.append('pre py')
                  elif delta.get_type() == DeltaType.PRE_SQL:
                      line.append('pre sql')
                  elif delta.get_type() == DeltaType.PYTHON:
                      line.append('delta py')
                  elif delta.get_type() == DeltaType.SQL:
                      line.append('delta sql')
                  elif delta.get_type() == DeltaType.POST_PYTHON:
                      line.append('post py')
                  elif delta.get_type() == DeltaType.POST_SQL:
                      line.append('post sql')
  
                  if self.__is_applied(delta):
                      line.append('Applied')
                  else:
                      line.append('Pending')
  
                  table.append(line)
  
          self.__print_table(table)
  
          print('')
          print('Applied upgrades in database')
  
          query = """SELECT
                  version,
                  description,
                  type,
                  installed_by,
                  installed_on,
                  success
                  FROM {}
                  """.format(self.upgrades_table)
  
          self.cursor.execute(query)
          records = self.cursor.fetchall()
  
          table = [['Version', 'Name', 'Type', 'Installed by', 'Installed on',
                    'Status']]
  
          for i in records:
              line = [str(i[0]), str(i[1])]
              delta_type = i[2]
              if delta_type == 0:
                  line.append('baseline')
              elif delta_type == DeltaType.PRE_PYTHON:
                  line.append('pre py')
              elif delta_type == DeltaType.PRE_SQL:
                  line.append('pre sql')
              elif delta_type == DeltaType.PYTHON:
                  line.append('delta py')
              elif delta_type == DeltaType.SQL:
                  line.append('delta sql')
              elif delta_type == DeltaType.POST_PYTHON:
                  line.append('post py')
              elif delta_type == DeltaType.POST_SQL:
                  line.append('post sql')
  
              line.append(str(i[3]))
              line.append(str(i[4]))
  
              success = str(i[5])
              if success == 'True':
                  line.append('Success')
              else:
                  line.append('Failed')
  
              table.append(line)
  
          self.__print_table(table)