Fujitsu Consultant interview questions

For four days the HR kept calling and said that she has sent me a mail about interview process. No mails received suddenly some random person would call at random time to take interview. Once I received a call in office and had to deny the interview. Later they called me at their Hyderabad office for a telephonic interview that being conducted by someone in Noida for a vacancy in Noida. I was guided to a meeting room and my bag was detained at the reception. After 15-20 minutes I received a call and they asked questions Exchange on-premise. The interview call letter said "Please prepare SQL queries thoroughly".