Log Message:-----------Avoid mathematical inconsistency in example about avoiding division byzero with a CASE expression. Per gripe from Russell Smith.
Modified Files:-------------- pgsql/doc/src/sgml: syntax.sgml (r1.120 -> r1.121) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/syntax.sgml?r1=1.120&r2=1.121)
