问从气流DAG连接到ClickHouse

EN

from airflow import DAG
from airflow.hooks.clickhouse_hook import ClickHouseHook
from airflow.operators.python_operator import PythonOperator
from airflow.utils.dates import days_ago
from datetime import datetime 

default_args = {
    'owner': 'airflow',
    'depends_on_past': False,
    'start_date': datetime(2020, 10, 18)    
}

def _data_from_clickhouse():
    
    
    ch_hook = ClickHouseHook(clickhouse_conn_id='ClickHouse_rnd_conn')   
    ch_hook.get_records('select * from cpa_traffic_costs')


with DAG(dag_id='data_to_clickhouse',          
         default_args=default_args) as dag:  
        
    get_data_from_clickhouse = PythonOperator(
        task_id='get_data_from_clickhouse',
        python_callable=_data_from_clickhouse,
    )
    
    get_data_from_clickhouse