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PolyBase で外部データソースとしてPCA Sales を連携利用

CData ODBC Driver for PCA Sales とSQL Server 2019 のPolyBase を使って、リアルタイムPCA Sales 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 PCA Sales data を組み合わせて使うことで、SQL Server データと同じようにPCA Sales 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PCA Sales data の設定から、T-SQL クエリを使ったPCA Sales data へのアクセスを行います。

The CData ODBC drivers offer unmatched performance for interacting with live PCA Sales data using PolyBase due to optimized data processing built into the driver. When you issue complex SQL queries from SQL Server to PCA Sales, the driver pushes down supported SQL operations, like filters and aggregations, directly to PCA Sales 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 PCA Sales data, using a single query to pull data from distributed sources.

PCA Sales 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 PCA Sales Sys is created automatically).

PCA Sales uses the OAuth 2 authentication standard. You will need to obtain the OAuthClientId and OAuthClientSecret by registering an app with PCA Sales. See the Getting Started section of the help documentation for an authentication guide.

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

PCA Sales 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.

CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'password';

Creating a Credential Database

Execute the following SQL command to create credentials for the external data source connected to PCA Sales data.

NOTE: Since PCA Sales does not require a User or Password to authenticate, you may use whatever values you wish for IDENTITY and SECRET.

CREATE DATABASE SCOPED CREDENTIAL pcasales_creds
WITH IDENTITY = 'username', SECRET = 'password';

Create an External Data Source for PCA Sales

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

For PCA Sales, set SERVERNAME to 'localhost' or '127.0.0.1' and leave PORT empty. PUSHDOWN is set to ON by default, meaning the ODBC Driver can leverage server-side processing for complex queries.

CREATE EXTERNAL DATA SOURCE cdata_pcasales_source
WITH ( 
  LOCATION = 'odbc://SERVERNAME[:PORT]',
  CONNECTION_OPTIONS = 'DSN=CData PCA Sales Sys',
  -- PUSHDOWN = ON | OFF,
  CREDENTIAL = pcasales_creds
);

PCA Sales のExternal Table を作成

After creating the external data source, use CREATE EXTERNAL TABLE statements to link to PCA Sales data from your SQL Server instance. The table column definitions must match those exposed by the CData ODBC Driver for PCA Sales. 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 PCA Sales MasterSms would look similar to the following:

CREATE EXTERNAL TABLE MasterSms(
  SyohinCode [nvarchar](255) NULL,
  SyohinMei [nvarchar](255) NULL,
  ...
) WITH ( 
  LOCATION='MasterSms',
  DATA_SOURCE=cdata_pcasales_source
);

Having created external tables for PCA Sales 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 PCA Sales, freeing up local resources and computing power. Download a free, 30-day trial of the ODBC Driver for PCA Sales and start working with live PCA Sales data alongside your SQL Server data today.

 
 
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