Log Message:
-----------
Doc patch that adds an example of a correllated UPDATE.
David Fetter
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
update.sgml (r1.33 -> r1.34)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/update.sgml.diff?r1=1.33&r2=1.34)