Seems this no longer true, so I removed it from the FETCH manual page:

       Once  all  rows  are  fetched,  every  other  fetch access
       returns no rows.

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

Tue, 4 Apr 2000 15:28:06 -0400 (EDT)
Bruce Momjian <pgman@candle.pha.pa.us>
Removed from FETCH manual page