Example 2—Hadoop file server (pxf)

=# CREATE WRITABLE EXTERNAL TABLE unload_expenses 
   ( LIKE expenses ) 
   LOCATION ('pxf://dir/path?PROFILE=hdfs:text') 
 FORMAT 'TEXT' (DELIMITER ',')
 DISTRIBUTED BY (exp_id);

You specify an HDFS directory for a writable external table that you create with the pxf protocol.