docs: def getTriples(pointing):
      """Get all triples of a specified pointing ID.
  
      Defaults is to return a complete list triples."""
  
      sql="SELECT id FROM triples t join triple_members m ON t.id=m.triple"
      sql+=" join bucket.exposure e on e.expnum=m.expnum "
      sql+=" WHERE pointing=%s  group by id  order by e.expnum  "
      cfeps.execute(sql, ( pointing, ) )
      return(cfeps.fetchall())