Amazon Technical Support Engineer interview questions

It was a campus drive,the process took 1 day. first round was written test: -> It consist of basic aptitude questions(no options) ->Basic SQL questions Second round of technical ->Be strong with aptitude they would ask aptitude questions ->few logical questions ->have basic knowledge of SQL queries Third round ->some logical and aptitude questions Be thorough with aptitude and sql queries Interviewers were very cool and friendly. One of the best interview I have attended If we do no concept he used to teach