select distinct substring(name,1,1) from stamps ,color_master,np_master where color_master.color_code=stamps.color_code and color_master.color='Light Blue' and np_master.np_code=stamps.np_code and np_master.np='R' and stamps.serial_no='1818' order by substring(name,1,1)
IndianPost
Color >> Light Blue >> Currency >> R >> Serial Number >> 1818 >> Alpha >> D >>