title: How to export data including large objects from Postgres and later import the exported data to Greenplum
body: <p>I don't want to use <code>pg_dump</code> to export data into sql script, since feeding it to the greenplum cluster is too slow when I have a large amount of data to import. So it seems using greenplum's <code>gpfdist</code> is prefered. Is there any way I can do this?</p>
  
  <p>Or as an alternative, can I export a particular Postgres table's data into a CSV format file containing the large orbjects of that table?</p>