This is the implementation of the Trino data handler for MindsDB. Trino is an open-source distributed SQL query engine designed to query large data sets distributed over one or more heterogeneous data sources.

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Implementation

This handler is implemented using pyhive, a collection of Python DB-API and SQLAlchemy interfaces for Presto and Hive. The required arguments to establish a connection are as follows:
  • user is the database user.
  • password is the database password.
  • host is the host name, IP address, or URL.
  • port is the port used to make TCP/IP connection.
There are some optional arguments as follows:
  • auth is the authentication method. Currently, only basic is supported.
  • http_scheme takes the value of httpby default. It can be set to https as well.
  • catalog is the catalog.
  • schema is the schema name.
  • with defines default WITH-clause (properties) for ALL tables. This parameter is experimental and might be changed or removed in future release.
If you installed MindsDB locally via pip, you need to install all handler dependencies manually. To do so, go to the handler’s folder (mindsdb/integrations/handlers/trino_handler) and run this command: pip install -r requirements.txt.

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Usage

In order to make use of this handler and connect to the Trino database in MindsDB, the following syntax can be used: 
CREATE DATABASE trino_datasource
WITH
  ENGINE = 'trino',
  PARAMETERS = {
    "host": "127.0.0.1",
    "port": 443,
    "auth": "basic",
    "http_scheme": "https",
    "user": "trino",
    "password": "password",
    "catalog": "default",
    "schema": "test",
    "with": "with (transactional = true)"
  };
You can use this established connection to query your table as follows: 
SELECT *
FROM trino_datasource.demo_table;