Amazon Data Engineer interview questions

First of all the interviewers were very nice and initially it started with my resume and my projects and they asked me to write some sql query, and one python code also they asked some situational based questions.

There were 3 rounds in total 1st was online assessment ,2nd ,3rd was technical round. in 2nd round 4-5 dsa questions with difficulty easy and easy medium was asked+ polymorphism , real life implementation of stacks and abstraction in oops. Next round was role specific and sql query was asked 3,4 apart from projects and profile discussion