select distinct substring(name,1,1) from stamps ,np_master where year(stamps.issue_date)=2001 and month(issue_date)=10 and dayofmonth(stamps.issue_date)=2 and stamps.serial_no='2021' and np_master.np_code=stamps.np_code and np_master.np='R' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 2001 >> month >> October >> day >> 2 >> Serial Number >> 2021 >> Currency >> R >> Alpha >> M >>