from airflow import DAG
from airflow.providers.clickhouse.hooks.clickhouse import ClickHouseHook
from airflow.operators.python import PythonOperator
from datetime import datetime

def test_conn():
    hook = ClickHouseHook(clickhouse_conn_id="my_clickhouse_provider")
    hook.run("SELECT 1")

with DAG(
    dag_id="test_clickhouse_dag",
    start_date=datetime(2024, 1, 1),
    schedule=None,
    catchup=False,
) as dag:
    PythonOperator(task_id="check_clickhouse", python_callable=test_conn)