select distinct substring(name,1,1) from stamps ,printsize_master where year(stamps.issue_date)=2001 and month(issue_date)=9 and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='2.54 X 3.5' and stamps.serial_no='2018' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 2001 >> month >> September >> Print Size >> 2.54 X 3.5 >> Serial Number >> 2018 >> Alpha >> C >>