Connect to TigerGraph as an External Data Source using PolyBase

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TigerGraph ODBC Driver

The TigerGraph ODBC Driver is a powerful tool that allows you to connect with live data from TigerGraph, directly from any applications that support ODBC connectivity.

Access TigerGraph data like you would a relational database through a standard ODBC Driver interface.

Use the CData ODBC Driver for TigerGraph and PolyBase to create an external data source in SQL Server 2019 with access to live TigerGraph data.

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 ODBC Driver for TigerGraph, you get access to your TigerGraph data directly alongside your SQL Server data. This article walks through creating an external data source and external tables to grant access to live TigerGraph data using T-SQL queries.

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

Connect to TigerGraph

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 TigerGraph Sys is created automatically).

To authenticate with your TigerGraph instance, set the User, Password, and URL properties to valid TigerGraph credentials. By default connections are made on port 14240.

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

Create an External Data Source for TigerGraph 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.


Creating a Credential Database

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

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

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

Create an External Data Source for TigerGraph

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

For TigerGraph, set SERVERNAME to 'localhost' or '' 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_tigergraph_source
  CONNECTION_OPTIONS = 'DSN=CData TigerGraph Sys',
  CREDENTIAL = tigergraph_creds

Create External Tables for TigerGraph

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

  id [nvarchar](255) NULL,
  locationId [nvarchar](255) NULL,
) WITH ( 

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