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PolyBase で外部データソースとしてZoho CRM を連携利用

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

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

Zoho CRM 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 Zoho CRM Sys is created automatically).

Zoho CRM はOAuth 認証標準を利用しています。OAuth を使って認証するには、アプリケーションを作成してOAuthClientId、OAuthClientSecret、およびCallbackURL 接続プロパティを取得しなければなりません。認証方法については、ヘルプドキュメントの「OAuth 認証の使用」を参照してください。

Zoho CRM 本製品はパフォーマンスを向上させるためにデフォルトでUseServerSideFiltering がTrue に設定されていますが、誤った結果が返される場合があります。詳しくは、ヘルプドキュメントの「高度な設定」を参照してください。

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

Zoho CRM 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 Zoho CRM data.

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

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

Create an External Data Source for Zoho CRM

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

For Zoho CRM, 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_zohocrm_source
WITH ( 
  LOCATION = 'odbc://SERVERNAME[:PORT]',
  CONNECTION_OPTIONS = 'DSN=CData Zoho CRM Sys',
  -- PUSHDOWN = ON | OFF,
  CREDENTIAL = zohocrm_creds
);

Zoho CRM のExternal Table を作成

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

CREATE EXTERNAL TABLE Accounts(
  Account_Name [nvarchar](255) NULL,
  Annual_Revenue [nvarchar](255) NULL,
  ...
) WITH ( 
  LOCATION='Accounts',
  DATA_SOURCE=cdata_zohocrm_source
);

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

 
 
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