text: # strcmp
          
  SELECT 
      CASE STRCMP('brillig', 'arillig')
          WHEN - 1 THEN 'first arg'
          WHEN 0 THEN 'the same'
          WHEN 1 THEN 'last arg'
          ELSE 'why are we here?'
      END;
  
  # comparison is by sort order
  # case insensitive