How to connect to snowflake database from Django framework - django

Question

I'm new to Django and I'm trying to display the result that comes from a Snowflake database. I know that Django has multiple built-in database backend engines like: django.db.backends.postgresql and django.db.backends.mysql among the other few it supports.
Unfortunately, I couldn't find a proper way of configuring a database backend engine in the
settings.py
When I enter sqlalchemy or snowflake-sqlalchemy as the engine, I get this error:
Try using 'django.db.backends.XXX', where XXX is one of:
'mysql', 'oracle', 'postgresql', 'sqlite3'
My guess was to go with sqlalchemy as that's what I usually use to connect to Snowflake outside of Django but for some reason, it's not working properly.
I'd appreciate any guidance on that.

Answer 1

2022 update: There's now a Snowflake backend for Django funded by
Snowflake customers and implemented by Django's Tim Graham:
https://github.com/cedar-team/django-snowflake
From their docs:
Install and usage
Use the version of django-snowflake that corresponds to your version of Django. For example, to get the latest compatible release for Django 3.2.x:
pip install django-snowflake==3.2.*
The minor release number of Django doesn't correspond to the minor release number of django-snowflake. Use the latest minor release of each.
Configure the Django DATABASES setting similar to this:
DATABASES = {
'default': {
'ENGINE': 'django_snowflake',
'NAME': 'MY_DATABASE',
'SCHEMA': 'MY_SCHEME',
'WAREHOUSE': 'MY_WAREHOUSE',
'USER': 'my_user',
'PASSWORD': 'my_password',
'ACCOUNT': 'my_account',
},
}
Some of the discussion while implementing it:
https://groups.google.com/g/django-developers/c/po9dS-2h4lg/m/UeKBoL8dBgAJ?pli=1

Answer 2

You should install a custom Snowflake engine like the following ones. Note that, as of today, those are incomplete. Though, it should not be difficult to implement missing Django features by completing the operations.pyfile.
-> https://github.com/pricemoov/django-snowflake
or
-> https://pypi.org/project/django-snowflake-backend/

Answer 3

please install snowflake-connector-python .E.g. below
pip3 install snowflake-connector-python==1.8.1
Here is the code to connect from SQL Alchemy.
=====================================================================
#!/usr/bin/env python
from snowflake.sqlalchemy import URL
from sqlalchemy import create_engine
engine = create_engine(URL(
account = 'XXXX',
user = 'XXXX',
password = 'XXXXX',
database = 'XXXXXX',
schema = 'XXXXXX',
warehouse = 'XXXXX',
role='XXXXXXXX',
))
try:
connection = engine.connect()
connection.execute(
"CREATE OR REPLACE TABLE test_async(c1 TIMESTAMP_NTZ,c2 VARIANT)",_no_results=True)
finally:
connection.close()
engine.dispose()
=========================================================================