How to connect PolyBase to ServiceDesk Plus

PolyBase for SQL Server allows you to query external data by using the same Transact-SQL syntax used to query a database table. When paired with the CData API Driver for ODBC, you get access to your ServiceDesk Plus data directly alongside your SQL Server data. This article describes creating an external data source and external tables to grant access to live ServiceDesk Plus data using T-SQL queries.

NOTE: PolyBase is only available on SQL Server 19 and above.

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

Connect to ServiceDesk Plus

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 ServiceDesk Plus Sys is created automatically).

Using OAuth Authentication

ServiceDeskPlus uses Zoho OAuth 2.0 for secure authentication. To set up OAuth access:

1. Register your application in the Zoho Developer Console at https://api-console.zoho.com
2. Configure your redirect URI to match your application setup
3. Note your Client ID and Client Secret from the application settings

After setting the following connection properties, you are ready to connect:

• AuthScheme: Set this to OAuth.
• OAuthClientId: Set this to your Zoho application Client ID.
• OAuthClientSecret: Set this to your Zoho application Client Secret.
• Scope: Set this to the required ServiceDeskPlus permissions (default includes read access to requests, problems, assets, and projects).
• Domain: Set this to your ServiceDeskPlus domain
• Portal: Set this to your ServiceDeskPlus portal

Example Connection String

Profile=C:\profiles\ServiceDeskPlus.apip;ProfileSettings="Portal=itdesk;Domain=.in;Scope=SDPOnDemand.requests.READ SDPOnDemand.problems.READ SDPOnDemand.assets.READ SDPOnDemand.projects.READ";AuthScheme=OAuth;OAuthClientId=your_client_id;OAuthClientSecret=your_client_secret;

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

Create an External Data Source for ServiceDesk Plus Data

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 ServiceDesk Plus data.

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

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

Create an External Data Source for ServiceDesk Plus

Execute a CREATE EXTERNAL DATA SOURCE SQL command to create an external data source for ServiceDesk Plus with PolyBase:

• Set the LOCATION parameter , using the DSN and credentials configured earlier.

For ServiceDesk Plus, set SERVERNAME to the URL or address for your server (e.g. 'localhost' or '127.0.0.1' for local servers; the remote URL for remote servers). 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_api_source
WITH ( 
  LOCATION = 'odbc://SERVER_URL',
  CONNECTION_OPTIONS = 'DSN=CData ServiceDesk Plus Sys',
  -- PUSHDOWN = ON | OFF,
  CREDENTIAL = api_creds
);

Create External Tables for ServiceDesk Plus

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

CREATE EXTERNAL TABLE AnnouncementComments(
   [nvarchar](255) NULL,
   [nvarchar](255) NULL,
  ...
) WITH ( 
  LOCATION='AnnouncementComments',
  DATA_SOURCE=cdata_api_source
);

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