secure database credentials

[christophlingg]

Hello!

we are sharing our notebooks on github and want to avoid commiting our db credentials. Therefore we want to use environment variables. Is there any chance to do so:

%sql postgresql://db_user:db_passwd@localhost:db_port/dbname

normally you can use :variable to read variables, but this case is special

[AndreaCrotti]

+1 on this @christophlingg

What do you mean by using :variable anyway?
I think it's an issue with the Ipython magic things more in general, is that correct?

[christophlingg]

@AndreaCrotti on the readme you can find an example for :variable

In [12]: name = 'Countess'
In [13]: %sql select description from character where charname = :name

[AndreaCrotti]

Ah ok I see..
Anyway I think the file that needs some changes for this to work is:

https://github.com/catherinedevlin/ipython-sql/blob/master/src/sql/magic.py

I was trying now to do some debugging but trying to put an ipdb there doesn't seem to work, it should not be too hard though..

[invisiblefunnel]

I was wondering the same thing and found this related post. Here's how to pass database creds from an environment variable:

%load_ext sql

from os import environ

 db_url = environ['DATABASE_URL']

%sql $db_url

[mottalrd]

I was browsing for the same, @invisiblefunnel solution is what I was looking for.
adding a note to the README would be great.

[eshilts]

I ran into this same issue. Thanks, @invisiblefunnel for the solution. I submitted a PR with that solution in the README.
#52

[tosolveit]

This is a great feature, I see that it has been merged but I think we don't get it with pip install, right?