class_docstr: This handler handles connection and execution of the Databend statements.
code: def __del__(self):
      if self.is_connected is True:
          self.disconnect()
  
imports: from typing import Optional
  from collections import OrderedDict
  import pandas
  from databend_sqlalchemy import connector
  from mindsdb_sql import parse_sql
  from mindsdb_sql.render.sqlalchemy_render import SqlalchemyRender
  from mindsdb.integrations.libs.base import DatabaseHandler
  from databend_sqlalchemy.databend_dialect import DatabendDialect
  from mindsdb_sql.parser.ast.base import ASTNode
  from mindsdb.utilities import log
  from mindsdb.integrations.libs.response import HandlerStatusResponse, HandlerResponse, RESPONSE_TYPE
  from mindsdb.integrations.libs.const import HANDLER_CONNECTION_ARG_TYPE
label_desc: Use image node_id 2 for calling the DatabendHandler obj's underlying member method code with example usage: obj.__del__() without return types