They had outsourced their hiring process to other company, so had to go for around 4 rounds of interview and then got a call from BCG. BCG guys have attitude problem .It seems they weren't interested in taking my interview as my process got over in 20 minutes . The guy who took my interview didn' have knowledge about SQL but had ask me questions on it . He didn't give me even 5-10 minutes to write the query and at the end he wrote a query which was wrong . It's all about luck . It wasn't my day