select distinct substring(name,1,1) from stamps ,color_master,np_master where np_master.np_code=stamps.np_code and np_master.np='P' and color_master.color_code=stamps.color_code and color_master.color='Yellow, Red, Blue and Black' order by substring(name,1,1)
IndianPost
Currency >> P >> Print >> Color >> Yellow, Red, Blue and Black >> Alpha >>