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URL: https://www.cdata.com/kb/tech/presto-powerbi-dataflows.rst

⇱ Create Presto Dataflows on PowerBI.com

Create Presto Dataflows on PowerBI.com

👁 Jerod Johnson
Jerod Johnson
Director, Technology Evangelism
Connect to the CData Power BI Connector for Presto from PowerBI.com to create Power BI Dataflows with real-time data.

The CData Power BI Connector for Presto seamlessly integrates with the tools and wizards in Power BI, including the real-time data workflows on PowerBI.com. Follow the steps below to pull data directly into DataFlows on PowerBI.com and use the Power BI Gateway to configure automatic refresh.

About Presto Data Integration

Accessing and integrating live data from Trino and Presto SQL engines has never been easier with CData. Customers rely on CData connectivity to:

  • Access data from Trino v345 and above (formerly PrestoSQL) and Presto v0.242 and above (formerly PrestoDB)
  • Read and write access all of the data underlying your Trino or Presto instances
  • Optimized query generation for maximum throughput.

Presto and Trino allow users to access a variety of underlying data sources through a single endpoint. When paired with CData connectivity, users get pure, SQL-92 access to their instances, allowing them to integrate business data with a data warehouse or easily access live data directly from their preferred tools, like Power BI and Tableau.

In many cases, CData's live connectivity surpasses the native import functionality available in tools. One customer was unable to effectively use Power BI due to the size of the datasets needed for reporting. When the company implemented the CData Power BI Connector for Presto they were able to generate reports in real-time using the DirectQuery connection mode.


Getting Started


Create a DSN

Installing the Power BI Connector creates a DSN (data source name) called CData Power BI Presto. This the name of the DSN that Power BI uses to request a connection to the data source. Configure the DSN by filling in the required connection properties.

You can use the Microsoft ODBC Data Source Administrator to create a new DSN or configure (and rename) an existing DSN: From the Start menu, enter "ODBC Data Sources." Ensure that you run the version of the ODBC Administrator that corresponds to the bitness of your Power BI Desktop installation (32-bit or 64-bit).

Set the Server and Port connection properties to connect, in addition to any authentication properties that may be required.

To enable TLS/SSL, set UseSSL to true.

Authenticating with LDAP

In order to authenticate with LDAP, set the following connection properties:

  • AuthScheme: Set this to LDAP.
  • User: The username being authenticated with in LDAP.
  • Password: The password associated with the User you are authenticating against LDAP with.

Authenticating with Kerberos

In order to authenticate with KERBEROS, set the following connection properties:

  • AuthScheme: Set this to KERBEROS.
  • KerberosKDC: The Kerberos Key Distribution Center (KDC) service used to authenticate the user.
  • KerberosRealm: The Kerberos Realm used to authenticate the user with.
  • KerberosSPN: The Service Principal Name for the Kerberos Domain Controller.
  • KerberosKeytabFile: The Keytab file containing your pairs of Kerberos principals and encrypted keys.
  • User: The user who is authenticating to Kerberos.
  • Password: The password used to authenticate to Kerberos.

Pulling Presto Data Directly Into Your Dataflow

With the data source configured, follow the steps below to load data from Presto tables into your DataFlow.

Set Up the Power BI Gateway

Follow the steps below to configure the gateway on your machine:

  1. Run the CData Power BI Connector installer. If you have not already done so, download the Power BI Gateway.
  2. Select the on-premises data gateway (recommended) option.
  3. Sign into the gateway.
  4. Name the gateway and specify a recovery key.

  5. In the Connectors step, choose a folder where the gateway will look for the CData Power BI Connector. This article uses C:\Users\PBIEgwService\Documents\Power BI Desktop\Custom Connectors\. Copy the .pqx files for the CData Connector (found in C:\Users\USERNAME\Documents\Power BI Desktop\Custom Connectors\) to the folder you configured.

    NOTE: The account configured for the service (NT SERVICE\PBIEgwService) needs to be able to access the folder chosen for the gateway. If needed, you can change the service account in the Service Settings section of the gateway installer.

  6. Confirm that the entry CData.PowerBI.Presto is displayed in the list in the Connectors section. 👁 CData Power BI Connectors in the On-Premises Data Gateway.

Set up Power BI Online for a Dataflow

  1. In Power BI Online, create a new workspace, which is also known as an app, if you do not already have one. Note that this is only available with Power BI Pro or higher.
  2. Set up your On-Premises Gateway. The steps for this are in the Configuring the Gateway section of this article.
  3. Go back to Power BI Online. In settings, go to 'Manage Gateways', and add a new data source to your Gateway
    • Enter the Data Source Name, the name that the data source will be referred to within Power BI Online
    • Select the Data Source Type, (e.g. CData Power BI Connector for Presto) and set the Data Source Name (e.g. CData Power BI Presto)
    • Set Authentication Method to "Anonymous" 👁 Configuring the connection for the gateway.
    • Set Privacy Level as needed
  4. Click Add to finish the configuration (do not skip the test connection as it is important to know if a successful connection was made).

    If you would like to manage the users that have access to this data source, you can go to the Users tab.

Set up your Dataflow and pull the Presto data

  1. In the new workspace, go to Create > Dataflow > Add New Entities.
  2. Choose the ODBC data source and enter the correct connection properties.
    👁 Connect to the data source for the CData Power BI connector.
    Enter your DSN name in the ODBC connection string section, dsn=CData Power BI Presto. Choose your gateway and set the authentication type to Anonymous.
  3. Choose the table(s) you want to work with and click Transform data.
    If you want to make any changes to the query, you can right click on the query and click on Advanced Editor.

Configure Data Refresh on PowerBI.com

Refresh your dataflow to have the most up to date data.

  • To refresh manually, open the dataflow options menu from your workspace -> Dataflows and click Refresh Now.
  • To schedule refreshes, open the dataflow options menu from your workspace -> Dataflows and click Schedule Refresh. Enable the option to keep your data up to date. Specify the refresh frequency in the menus.

👁 Scheduled refresh of Dataflow.

At this point, you will have a Dataflow built on top of live Presto data. Learn more about the CData Power BI Connectors for Presto and download a free trial from the CData Power BI Connector for Presto page. Let our Support Team know if you have any questions.

Ready to get started?

Download a free trial of the Presto Power BI Connector to get started:

 Download Now

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Presto Power BI Connector

The fastest and easiest way to connect Power BI to Presto data. Includes comprehensive high-performance data access, real-time integration, extensive metadata discovery, and robust SQL-92 support.