docstr: Set up the connection required by the handler.
  Returns:
      DBHandlerStatus
docstr_tok: ["Set","up","the","connection","required","by","the","handler",".","Returns",":","DBHandlerStatus"]
code: def connect(self):
      """
      Set up the connection required by the handler.
      Returns:
          DBHandlerStatus
      """
      try:
          protocol = self.protocol
          host = self.host
          port = self.port
          user = self.user
          password = self.password
          database = self.database
          url = (
              f"{protocol}://{user}:{password}@{host}:{port}/{database}"
          )
          if self.protocol == "clickhouse+https":
              url = url + "?protocol=https"
  
          engine = create_engine(url)
          self.connection = engine.raw_connection()
          return DBHandlerStatus(status=True)
      except Exception as e:
          return DBHandlerStatus(status=False, error=str(e))
  
file_path: evadb/evadb/third_party/databases/clickhouse/clickhouse_handler.py
imports: import pandas
  from sqlalchemy import create_engine
  from evadb.third_party.databases.types import DBHandler, DBHandlerResponse, DBHandlerStatus
label_desc: Use image node_id 2 for calling the ClickHouseHandler obj's underlying member method code with example usage: obj.connect() and returns: DBHandlerStatus, DBHandlerStatus