Log Message:-----------Avoid ambiguity, as per suggestion from Peter Stricker.
Modified Files:-------------- pgsql-server/doc/src/sgml: query.sgml (r1.38 -> r1.39) (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/query.sgml.diff?r1=1.38&r2=1.39)
