This is the implementation of the QuestDB data handler for MindsDB. QuestDB is a columnar time-series database with high performance ingestion and SQL analytics. It is open-source and available on the cloud.

​
Implementation

This handler is implemented by extending the PostgreSQL data handler. 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.
  • database is the database name.
  • public stores a value of True or False. Defaults to True if left blank.
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/questdb_handler) and run this command: pip install -r requirements.txt.

​
Usage

In order to make use of this handler and connect to the QuestDB server in MindsDB, the following syntax can be used: 
CREATE DATABASE questdb_datasource
WITH
  ENGINE = 'questdb',
  PARAMETERS = {
    "host": "127.0.0.1",
    "port": 8812,
    "database": "qdb",
    "user": "admin",
    "password": "password"
  };
You can use this established connection to query your table as follows: 
SELECT *
FROM questdb_datasource.demo_table
LIMIT 10;