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Try them now for free →Connect to Presto Data as a Linked Server via SQL Gateway
Use the SQL Gateway and the ODBC Driver to set up a linked server for Presto data.
You can use the SQL Gateway to configure a TDS (SQL Server) remoting service and set up a linked server for Presto data. After you have started the service, you can use the UI in SQL Server Management Studio or call stored procedures to create the linked server. You can then work with Presto data just as you would a linked SQL Server instance.
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
Connect to Presto as an ODBC Data Source
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.
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.
Configure the TDS Remoting Service
See the SQL Gateway Overview for a guide to configure a TDS remoting service in the SQL Gateway UI. The TDS remoting service is a daemon process that listens for TDS requests from clients.
Create a Linked Server for Presto Data
After you have configured and started the daemon, create the linked server and connect. You can use the UI in SQL Server Management Studio or call stored procedures.
Create a Linked Server from the UI
Follow the steps below to create a linked server from the Object Explorer.
- Open SQL Server Management Studio and connect to an instance of SQL Server.
- In the Object Explorer, expand the node for the SQL Server database. In the Server Objects node, right-click Linked Servers and click New Linked Server. The New Linked Server dialog is displayed.
- In the General section, click the Other Data Source option and enter the following information after naming the linked server:
- Provider: Select "Microsoft ODBC Driver for SQL Server" or "Microsoft OLE DB Driver for SQL Server"
Data Source: Enter the host and port the TDS remoting service is running on, separated by a comma.
Note that a value of "localhost" in this input refers to the machine where SQL Server is running so be careful when creating a linked server in Management Studio when not running on the same machine as SQL Server.
- Catalog: Enter the CData system DSN, CData Presto Sys.
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In the Security section, select the option to have the connection "made using this security context" and enter the username and password of a user you created in the Users tab of the SQL Gateway.
Create a Linked Server Programmatically
In addition to using the SQL Server Management Studio UI to create a linked server, you can use stored procedures. The following inputs are required:
- server: The linked server name.
- provider: Enter "MSOLEDBSQL", for the Microsoft OLE DB Driver for SQL Server.
datasrc: The host and port the service is running on, separated by a comma.
Note that a value of "localhost" in the datasrc input refers to the machine where SQL Server is running, so be careful when creating a linked server in Management Studio when not running on the same machine as SQL Server.
- catalog: Enter the system DSN configured for the service.
- srvproduct: Enter the product name of the data source; this can be an arbitrary value, such as "CData SQL Gateway" or an empty string.
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Call sp_addlinkedserver to create the linked server:
EXEC sp_addlinkedserver @server='Presto', @provider='MSOLEDBSQL', @datasrc='< MachineIPAddress >,1434', @catalog='CData Presto Sys', @srvproduct=''; GO
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Call the sp_addlinkedsrvlogin stored procedure to allow SQL Server users to connect with the credentials of an authorized user of the service. Note that the credentials you use to connect to the service must specify a user you configured on the Users tab of the SQL Gateway.
EXEC sp_addlinkedsrvlogin @rmtsrvname='Presto', @rmtuser='admin', @rmtpassword='test', @useself='FALSE', @locallogin=NULL; GO
Connect from SQL Server Management Studio
SQL Server Management Studio uses the SQL Server Client OLE DB provider, which requires the ODBC driver to be used inprocess. You must enable the "Allow inprocess" option for the SQL Server Native Client Provider in Management Studio to query the linked server from SQL Server Management Studio. To do this, open the properties for the provider you are using under Server Objects -> Linked Servers -> Providers. Check the "Allow inprocess" option and save the changes.
Execute Queries
You can now execute queries to the Presto linked server from any tool that can connect to SQL Server. Set the table name accordingly:
SELECT * FROM [linked server name].[CData Presto Sys].[Presto].[Customer]
