def execute(self, operation, parameters=None):
sql = _bind_parameters(operation,<EOL>parameters) if parameters else operation<EOL>self.job_id = self.run_query(sql)<EOL>
Executes a BigQuery query, and returns the job ID.

:param operation: The query to execute.
:type operation: str
:param parameters: Parameters to substitute into the query.
:type parameters: dict