Log Message:
-----------
Included is an example of using savepoints in a non-trivial example.
Giving examples in the SQL command reference is hard because we don't
have conditionals at the SQL level.
Gavin Sherry
Modified Files:
--------------
pgsql-server/doc/src/sgml/ref:
begin.sgml (r1.31 -> r1.32)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/ref/begin.sgml.diff?r1=1.31&r2=1.32)
update.sgml (r1.29 -> r1.30)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/ref/update.sgml.diff?r1=1.29&r2=1.30)