1st call by the HR- asked about my background, walk through of my resume, 3 strengths and weaknesses. what is difference between where clause and having clause. what is SELECT in SQL. different parts of a SELECT statement.Differences between Tableau and Qlikview. 2nd call is in person interview- Asked about normalization, full join and UNION,how to create dashboards in tableau, what are the difficulties in tableau. compare and contrast Tableau,Qlikview and SSRS.