将 Amazon RDS for Microsoft SQL Server 与 Amazon MWAA 一起使用

连接 ID：mssql_default

连接类型：Amazon Web Services

主机：YOUR_DB_HOST

架构：

登录：管理员

密码：

端口：1433

附加依赖项：

在命令提示符下，导航到存储 DAG 代码的目录。例如：

cd dags

复制以下代码示例的内容，并在本地另存为 sql-server.py。

"""
Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""
import pymssql
import logging
import sys
from airflow import DAG
from datetime import datetime
from airflow.operators.mssql_operator import MsSqlOperator
from airflow.operators.python_operator import PythonOperator

default_args = {
    'owner': 'aws',
    'depends_on_past': False,
    'start_date': datetime(2019, 2, 20),
    'provide_context': True
}

dag = DAG(
    'mssql_conn_example', default_args=default_args, schedule_interval=None)
    
drop_db = MsSqlOperator(
   task_id="drop_db",
   sql="DROP DATABASE IF EXISTS testdb;",
   mssql_conn_id="mssql_default",
   autocommit=True,
   dag=dag
)

create_db = MsSqlOperator(
   task_id="create_db",
   sql="create database testdb;",
   mssql_conn_id="mssql_default",
   autocommit=True,
   dag=dag
)

create_table = MsSqlOperator(
   task_id="create_table",
   sql="CREATE TABLE testdb.dbo.pet (name VARCHAR(20), owner VARCHAR(20));",
   mssql_conn_id="mssql_default",
   autocommit=True,
   dag=dag
)

insert_into_table = MsSqlOperator(
   task_id="insert_into_table",
   sql="INSERT INTO testdb.dbo.pet VALUES ('Olaf', 'Disney');",
   mssql_conn_id="mssql_default",
   autocommit=True,
   dag=dag
)

def select_pet(**kwargs):
   try:
        conn = pymssql.connect(
            server='sampledb.<xxxxxx>.<region>.rds.amazonaws.com',
            user='admin',
            password='<yoursupersecretpassword>',
            database='testdb'
        )
        
        # Create a cursor from the connection
        cursor = conn.cursor()
        cursor.execute("SELECT * from testdb.dbo.pet")
        row = cursor.fetchone()
        
        if row:
            print(row)
   except:
      logging.error("Error when creating pymssql database connection: %s", sys.exc_info()[0])

select_query = PythonOperator(
    task_id='select_query',
    python_callable=select_pet,
    dag=dag,
)

drop_db >> create_db >> create_table >> insert_into_table >> select_query