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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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Prerequisites

Before proceeding, ensure the following prerequisites are met:
  1. Install MindsDB locally via Docker or Docker Desktop.
  2. To connect Trino to MindsDB, install the required dependencies following this instruction.
  3. Install or ensure access to Trino.

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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.

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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;