harlequin-questdb
A Harlequin adapter for QuestDB, connecting via QuestDB's PostgreSQL wire protocol.
Installation
uv tool install harlequin --with harlequin-questdb
Or with pip:
pip install harlequin-questdb
Upgrading
To upgrade Harlequin, the adapter, or both, run:
uv tool upgrade harlequin --with harlequin-questdb
This upgrades harlequin to the latest compatible version and refreshes harlequin-questdb at the same time. Run the same command regardless of which package was bumped.
Usage
Connect to a local QuestDB instance using the defaults (host localhost, port 8812, user admin, password quest):
harlequin -a questdb
Pass individual connection options to override the defaults:
harlequin -a questdb --host myserver --port 8812 -u myuser --password mypassword
Or pass a libpq-style connection string as a positional argument:
harlequin -a questdb "host=myserver port=8812 user=myuser password=mypassword dbname=qdb"
Connection Options
| Option | Short | Default | Description |
|---|---|---|---|
--host |
-h |
localhost |
QuestDB host name or IP address |
--port |
-p |
8812 |
PostgreSQL wire protocol port |
--username |
-u |
admin |
QuestDB username |
--password |
quest |
QuestDB password |
Note: QuestDB only supports a single database named
qdb. Thedbnamefield in a connection string must beqdb(or omitted).
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