ݿͳƷ
֧֣oracle

  ֵ
  help --- ȡϢ
  all --- ִͳƷȽϺʱȷͳƵıķΧʹòtָΧıͳƷ
  ֵ    
  t --- ȱʡñб','ŷָֻʹô˲ʱʡԲtanalyze t:t_bd_mateiral,t_bd_customer
  analyze t_bd_mateiral,t_bd_customerȷ
     
