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='Blue Grey and Black' and stamps.serial_no='0667' order by substring(name,1,1)
IndianPost
Currency >> P >> Color >> Blue Grey and Black >> Serial Number >> 0667 >> Alpha >> B >>