code: def delimited_file(
          self,
          hdfs_dir,
          schema,
          name=None,
          database=None,
          delimiter=',',
          na_rep=None,
          escapechar=None,
          lineterminator=None,
          external=True,
          persist=False,
      ):
          
          name, database = self._get_concrete_table_path(
              name, database, persist=persist
          )
  
          stmt = ddl.CreateTableDelimited(
              name,
              hdfs_dir,
              schema,
              database=database,
              delimiter=delimiter,
              external=external,
              na_rep=na_rep,
              lineterminator=lineterminator,
              escapechar=escapechar,
          )
          self._execute(stmt)
          return self._wrap_new_table(name, database, persist)
docs: Interpret delimited text files (CSV / TSV / etc.) as an Ibis table. See
          `parquet_file` for more exposition on what happens under the hood.
  
          Parameters
          ----------
          hdfs_dir : string
            HDFS directory name containing delimited text files
          schema : ibis Schema
          name : string, default None
            Name for temporary or persistent table; otherwise random one
            generated
          database : string
            Database to create the (possibly temporary) table in
          delimiter : length-1 string, default ','
            Pass None if there is no delimiter
          escapechar : length-1 string
            Character used to escape special characters
          lineterminator : length-1 string
            Character used to delimit lines
          external : boolean, default True
            Create table as EXTERNAL (data will not be deleted on drop). Not that
            if persist=False and external=False, whatever data you reference will
            be deleted
          persist : boolean, default False
            If True, do not delete the table upon garbage collection of ibis
            table object
  
          Returns
          -------
          delimited_table : ImpalaTable