how convert mongodb _id into string

[Vladimir Morozov]

Is it possible to get string representation of mongodb object id (_id)
inside Drill sql statement? I have problems with representing _id in
Tableau where it is  converted into uppercase string , e.g. MongoDb
"_id" : ObjectId("577e4a2e081d4b0fb59ac96e")
become '577E4A2E081D4B0FB59AC96E'  Tableau value ,not sure if it is ODBC or
Tableau conversion bug

Thanks
Vlad