select distinct substring(name,1,1) from stamps ,paper_master,printsize_master where year(stamps.issue_date)=2001 and month(issue_date)=4 and paper_master.paper_code=stamps.paper_code and paper_master.paper='Matt Chromo' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='2.90 x 3.9' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 2001 >> month >> April >> Paper >> Matt Chromo >> Print Size >> 2.90 x 3.9 >> Alpha >> Y >>