Yes Hakan you're Right. What i have write is for SQL Action. But even better would be to use the %UpdateStats Meta-SQL directly in a SQL.
You should write %UpdateStats(DISTRIB_LINE)
Your are absolutely right!!!!
Whenever you can use metasql/build-in functions/PeopleCode API/etc, you should always use these in favor of database specific statements, since PeopleSoft is database independent and extensions/modifications should be realized database independent as well (where possible).