<type>character_data</type>
      </para>
      <para>
       Always <literal>USAGE</literal>
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>is_grantable</structfield> <type>yes_or_no</type>
      </para>
      <para>
       <literal>YES</literal> if the privilege is grantable, <literal>NO</literal> if not
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>
 </sect1>

 <sect1 id="infoschema-routine-column-usage">
  <title><literal>routine_column_usage</literal></title>

  <para>
   The view <literal>routine_column_usage</literal> identifies all columns
   that are used by a function or procedure, either in the SQL body or in
   parameter default expressions.  (This only works for unquoted SQL bodies,
   not quoted bodies or functions in other languages.)  A column is only
   included if its table is owned by a currently enabled role.
  </para>

  <table>
   <title><literal>routine_column_usage</literal> Columns</title>

   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>specific_catalog</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the database containing the function (always the current database)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>specific_schema</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the schema containing the function
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>specific_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       The <quote>specific name</quote> of the function.  See <xref linkend="infoschema-routines"/> for more information.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>routine_catalog</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the database containing the function (always the current database)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>routine_schema</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the schema containing the function
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>routine_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the function (might be duplicated in case of overloading)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>table_catalog</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the database that contains the table that is used by the
       function (always the current database)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>table_schema</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the schema that contains the table that is used by the function
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>table_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the table that is used by the function
      </para></entry>
     </row>

     <row>