Infosys Specialist Programmer interview questions

It was great experience, the interviewer is nice and polite even gives time to be calm and understand the question then reply. Overall experience is new for me as i give in the infosys campus.

It was a in-office interview, and I have answered and written all the 5 DSA questions 2 is from LL , 1 is from tree and 1 is from merge sort and last one is from graph, but than also interviewer asked me continuously SQL advanced questions, I have answered him basics queries and all but he goes very Deep in the SQL , despite of giving all answers correctly of DSA , react , OOPS , OS then also he didn't selected me.