select distinct substring(name,1,1) from stamps ,printsize_master where year(stamps.issue_date)=1990 and month(issue_date)=2 and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='4.48 X 3.3' and stamps.serial_no='1402' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1990 >> month >> February >> Print Size >> 4.48 X 3.3 >> Serial Number >> 1402 >> Alpha >> B >>