<!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.108 2004/03/24 03:27:46 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.109 2004/03/30 15:54:33 momjian Exp $
PostgreSQL documentation
-->
return types. If <replaceable
class="parameter">pattern</replaceable>
is specified, only functions whose names match the pattern are shown.
- If the form
- <literal>\df+</literal> is used, additional information about
+ If the form <literal>\df+</literal> is used, additional information about
each function, including language and description, is shown.
</para>
<note>
<para>
+ To look up functions taking argument or returning values of a specific
+ type, use your pager's search capability to scroll through the <literal>\df</>
+ output.
+ </para>
+
+ <para>
To reduce clutter, <literal>\df</> does not show data type I/O
functions. This is implemented by ignoring functions that accept
or return type <type>cstring</>.