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PolyBase で外部データソースとしてDynamics NAV を連携利用

CData ODBC Driver for Dynamics NAV とSQL Server 2019 のPolyBase を使って、リアルタイムDynamics NAV data に外部データソースとしてアクセス。

SQL Server のPolyBase は、データベーステーブルをクエリするTransact-SQL シンタックスを使って、外部データにクエリする仕組みです。 CData ODBC Drivers for Dynamics NAV data を組み合わせて使うことで、SQL Server データと同じようにDynamics NAV data へのアクセスが可能です。 本記事では、PolyBase 外部データソースへのDynamics NAV data の設定から、T-SQL クエリを使ったDynamics NAV data へのアクセスを行います。

The CData ODBC drivers offer unmatched performance for interacting with live Dynamics NAV data using PolyBase due to optimized data processing built into the driver. When you issue complex SQL queries from SQL Server to Dynamics NAV, the driver pushes down supported SQL operations, like filters and aggregations, directly to Dynamics NAV and utilizes the embedded SQL engine to process unsupported operations (often SQL functions and JOIN operations) client-side. And with PolyBase, you can also join SQL Server data with Dynamics NAV data, using a single query to pull data from distributed sources.

Dynamics NAV への接続

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs. To create an external data source in SQL Server using PolyBase, configure a System DSN (CData Dynamics NAV Sys is created automatically).

Before you can connect, OData Services will need to be enabled on the server. Once OData Services are enabled, you will be able to query any Services that are published on the server.

The User and Password properties, under the Authentication section, must be set to valid Dynamics NAV user credentials. In addition, you will need to specify a URL to a valid Dynamics NAV server organization root and a ServerInstance. If there is not a Service Default Company for the server, you will need to set the Company as well.

Click "Test Connection" to ensure that the DSN is connected to Dynamics NAV properly. Navigate to the Tables tab to review the table definitions for Dynamics NAV.

Dynamics NAV Data の外部データソースの作成

After configuring the connection, you need to create a master encryption key and a credential database for the external data source.

Creating a Master Encryption Key

Execute the following SQL command to create a new master key, 'ENCRYPTION,' to encrypt the credentials for the external data source.


Creating a Credential Database

Execute the following SQL command to create credentials for the external data source connected to Dynamics NAV data.

NOTE: IDENTITY and SECRET correspond with the User and Password properties for Dynamics NAV.

WITH IDENTITY = 'username', SECRET = 'password';

Create an External Data Source for Dynamics NAV

Execute the following SQL command to create an external data source for Dynamics NAV with PolyBase, using the DSN and credentials configured earlier.

PUSHDOWN is set to ON by default, meaning the ODBC Driver can leverage server-side processing for complex queries.

CREATE EXTERNAL DATA SOURCE cdata_dynamicsnav_source
  CREDENTIAL = dynamicsnav_creds

Dynamics NAV のExternal Table を作成

After creating the external data source, use CREATE EXTERNAL TABLE statements to link to Dynamics NAV data from your SQL Server instance. The table column definitions must match those exposed by the CData ODBC Driver for Dynamics NAV. You can refer to the Tables tab of the DSN Configuration Wizard to see the table definition.

Sample CREATE TABLE Statement

The statement to create an external table based on a Dynamics NAV Customer would look similar to the following:

  Name [nvarchar](255) NULL,
  Prices_Including_VAT [nvarchar](255) NULL,
) WITH ( 

Having created external tables for Dynamics NAV in your SQL Server instance, you are now able to query local and remote data simultaneously. Thanks to built-in query processing in the CData ODBC Driver, you know that as much query processing as possible is being pushed to Dynamics NAV, freeing up local resources and computing power. Download a free, 30-day trial of the ODBC Driver for Dynamics NAV and start working with live Dynamics NAV data alongside your SQL Server data today.