code: def compile_column(name: str, data_type: str, nullable: bool) -> str:
      
  
      null_str = 'NULL' if nullable else 'NOT NULL'
  
      return '{name} {data_type} {null},'.format(name=name,
                                                 data_type=data_type,
                                                 null=null_str)
docs: Create column definition statement.