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This is the implementation of the MonetDB data handler for MindsDB. MonetDB is an open-source column-oriented relational database management system originally developed at the Centrum Wiskunde & Informatica in the Netherlands. It is designed to provide high performance on complex queries against large databases, such as combining tables with hundreds of columns and millions of rows.

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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 MonetDB to MindsDB, install the required dependencies following this instruction.
  3. Install or ensure access to MonetDB.

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Implementation

This handler is implemented using pymonetdb, a Python library that allows you to use Python code to run SQL commands on the MonetDB database. The required arguments to establish a connection are as follows:
  • user is the username associated with the database.
  • password is the password to authenticate your access.
  • host is the host name or IP address.
  • port is the port through which TCP/IP connection is to be made.
  • database is the database name to be connected.
  • schema_name is the schema name to get tables. It is optional and defaults to the current schema if not provided.

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Usage

In order to make use of this handler and connect to the MonetDB database in MindsDB, the following syntax can be used: 
CREATE DATABASE monetdb_datasource
WITH
    engine = 'monetdb',
    parameters = {
        "user": "monetdb",
        "password": "monetdb",
        "host": "127.0.0.1",
        "port": 50000,
        "schema_name": "sys",
        "database": "demo"
    };
You can use this established connection to query your table as follows: 
SELECT *
FROM monetdb_datasource.demo;
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