fix: Dremio alias

[betodealmeida]

SUMMARY

For some reason the 3.x version of the Dremio driver shows the dialect as dremio+flight, instead of simply dremio with the driver flight.

This PR adds dremio+flight to the list of aliases in the Dremio DB engine spec, so that Dremio shows up in the database dropdown correctly.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TESTING INSTRUCTIONS

Tested locally, connected to Dremio:

1. Run Dremio locally: docker run -p 9047:9047 -p 31010:31010 -p 32010:32010 -p 45678:45678 dremio/dremio-oss
2. Visit http://localhost:9047/ and create an account.
3. Use dremio+flight://username:password@localhost:32010/?UseEncryption=false for the SQLAlchemy URI.
4. Run a query.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[betodealmeida]

When ep.load() failed on line 155 this would show the name of the previous dialect successfully loaded.

[villebro]

If this has been working correctly for other drivers, wouldn't this indicate that the problem is in the Dremio driver? I'm assuming we've never had trouble with postgresql+psycopg2, despite not aliasing for it..?

[betodealmeida]

If this has been working correctly for other drivers, wouldn't this indicate that the problem is in the Dremio driver? I'm assuming we've never had trouble with postgresql+psycopg2, despite not aliasing for it..?

@villebro yeah, the problem is in the driver. I took a look at their repo and couldn't see anything wrong, but I'm going to file a ticket about it.

Here's the odd behavior:

>>> from sqlalchemy import create_engine
>>> engine = create_engine("dremio+flight://beto:XXX@localhost:32010/dremio")
>>> engine.dialect.name
'dremio+flight'
>>> engine.dialect.driver
'dremio+flight'

On the other hand:

>>> engine = create_engine("shillelagh+apsw://")
>>> engine.dialect.name
'shillelagh'
>>> engine.dialect.driver
'apsw'