select distinct substring(name,1,1) from stamps ,np_master where year(stamps.issue_date)=1949 and month(issue_date)=8 and dayofmonth(stamps.issue_date)=15 and np_master.np_code=stamps.np_code and np_master.np='A' and stamps.serial_no='0310' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1949 >> month >> August >> day >> 15 >> Currency >> A >> Serial Number >> 0310 >> Alpha >> K >>