<para>
<application>PL/pgSQL</> functions can also be declared to return
- a <quote>set</>, or table, of any data type they can return a single
- instance of. Such a function generates its output by executing
- <command>RETURN NEXT</> for each desired element of the result
+ a <quote>set</>, or table. Such a function generates its output by
+ executing <command>RETURN NEXT</> for each desired element of the result
set, or by using <command>RETURN QUERY</> to output the result of
evaluating a query.
</para>
WHERE fooid > 0
LOOP
-- can do some processing here
- RETURN NEXT r; -- return next row of SELECT
+ RETURN NEXT r; -- return current row of SELECT
END LOOP;
RETURN;
END