Hi David,
This can solve the issue but depth(records) of that view would be too much.
The architecture is like this:
One kamailio fronting multiple asterisk. Each of asterisk boxes have their
Specific users databases. Thus, I'm
trying to create db connections inside request route or completely write my own authentication service if I get the user's
Password.
So, that would be great if I would be able to pass the db_url to auth_db module in request  route.
Let me know what you think.

Thanks,
Arish