select distinct substring(name,1,1) from stamps ,printsize_master where year(stamps.issue_date)=1987 and month(issue_date)=4 and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='3.75 X 1.9' and stamps.serial_no='1242' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1987 >> month >> April >> Print Size >> 3.75 X 1.9 >> Serial Number >> 1242 >> Alpha >> M >>