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