Hi Narender Gavinolla (Harman Connected Services Inc),
Thank you for posting query in Microsoft Q&A Platform.
From error message, it seems the account you are using not have permissions. Kindly try assigning required permissions such as
Database Admin
or any other to query data from ADX tables and then re-try and see.
Hope this helps. Please let me know if any further queires.
Please consider hitting Accept Answer
button. Accepted answers help community as well.