docs: def get_entry(self, key, column=None, table=None):
          """Get a specific entry."""
          if table is None:  table  = self.main_table
          if column is None: column = "id"
          if isinstance(key, basestring): key = key.replace("'","''")
          query = 'SELECT * from "%s" where "%s"=="%s" LIMIT 1;'
          query = query % (table, column, key)
          self.own_cursor.execute(query)
          return self.own_cursor.fetchone()