I didn't have an interview. But I'd like to mention that I had no work experience. I was willing to find a data analyst or machine learning job position. I didn't involve SQL in my resume. Nevertheless, they decided to invite me to the interview on SQL. They sent me preparation websites/books with database concepts, ER-diagrams, basics of SQL, exercises to train on, normalization and its forms, analytical functions. I was preparing for two weeks and then they declined right before the interview not giving any chance to present myself.