-<!-- $PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.118 2007/11/28 15:42:31 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.119 2007/11/28 20:13:06 momjian Exp $ -->
<chapter id="plpgsql">
<title><application>PL/pgSQL</application> - <acronym>SQL</acronym> Procedural Language</title>
<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