Source code for tests.system.providers.snowflake.example_snowflake

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
"""
Example use of Snowflake related operators.
"""

from __future__ import annotations

import os
from datetime import datetime

from airflow import DAG
from airflow.providers.common.sql.operators.sql import SQLExecuteQueryOperator
from airflow.providers.snowflake.operators.snowflake import SnowflakeSqlApiOperator

[docs]SNOWFLAKE_CONN_ID = "my_snowflake_conn"
[docs]SNOWFLAKE_SAMPLE_TABLE = "sample_table"
# SQL commands
[docs]CREATE_TABLE_SQL_STRING = ( f"CREATE OR REPLACE TRANSIENT TABLE {SNOWFLAKE_SAMPLE_TABLE} (name VARCHAR(250), id INT);" )
[docs]SQL_INSERT_STATEMENT = f"INSERT INTO {SNOWFLAKE_SAMPLE_TABLE} VALUES ('name', %(id)s)"
[docs]SQL_LIST = [SQL_INSERT_STATEMENT % {"id": n} for n in range(10)]
[docs]SQL_MULTIPLE_STMTS = "; ".join(SQL_LIST)
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "example_snowflake"
with DAG( DAG_ID, start_date=datetime(2021, 1, 1), default_args={"snowflake_conn_id": SNOWFLAKE_CONN_ID, "conn_id": SNOWFLAKE_CONN_ID}, tags=["example"], schedule="@once", catchup=False, ) as dag: # [START howto_operator_snowflake]
[docs] snowflake_op_sql_str = SQLExecuteQueryOperator( task_id="snowflake_op_sql_str", sql=CREATE_TABLE_SQL_STRING )
snowflake_op_with_params = SQLExecuteQueryOperator( task_id="snowflake_op_with_params", sql=SQL_INSERT_STATEMENT, parameters={"id": 56}, ) snowflake_op_sql_list = SQLExecuteQueryOperator(task_id="snowflake_op_sql_list", sql=SQL_LIST) snowflake_op_sql_multiple_stmts = SQLExecuteQueryOperator( task_id="snowflake_op_sql_multiple_stmts", sql=SQL_MULTIPLE_STMTS, split_statements=True, ) snowflake_op_template_file = SQLExecuteQueryOperator( task_id="snowflake_op_template_file", sql="example_snowflake_snowflake_op_template_file.sql", ) # [END howto_operator_snowflake] # [START howto_snowflake_sql_api_operator] snowflake_sql_api_op_sql_multiple_stmt = SnowflakeSqlApiOperator( task_id="snowflake_op_sql_multiple_stmt", sql=SQL_MULTIPLE_STMTS, statement_count=len(SQL_LIST), ) # [END howto_snowflake_sql_api_operator] ( snowflake_op_sql_str >> [ snowflake_op_with_params, snowflake_op_sql_list, snowflake_op_template_file, snowflake_op_sql_multiple_stmts, snowflake_sql_api_op_sql_multiple_stmt, ] ) from tests.system.utils import get_test_run # noqa: E402 # Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)

Was this entry helpful?