I successfully connected to Mongo DB using connection string and my mongo DB has some DB name in Capital Letter like "HELLO" and some are small "test".
When I run show databases; command then it show all database but when I execute
show tables; command using the "use mongo.HELLO" then don't show any tables but when I execute same command using "use mongo.test" then it show all tables.
And bot database has the same collections.
So, Apache Drill doesn't support if the mongo database name in Capital Letters.