role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>grantor</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the role that granted the privilege
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>grantee</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the role that the privilege was granted to
      </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 contains the column (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 contains the column
      </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 contains the column
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>column_name</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the column
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>privilege_type</structfield> <type>character_data</type>
      </para>
      <para>
       Type of the privilege: <literal>SELECT</literal>,
       <literal>INSERT</literal>, <literal>UPDATE</literal>, or
       <literal>REFERENCES</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-column-udt-usage">
  <title><literal>column_udt_usage</literal></title>

  <para>
   The view <literal>column_udt_usage</literal> identifies all columns
   that use data types owned by a currently enabled role.  Note that in
   <productname>PostgreSQL</productname>, built-in data types behave
   like user-defined types, so they are included here as well.  See
   also <xref linkend="infoschema-columns"/> for details.
  </para>

  <table>
   <title><structname>column_udt_usage</structname> 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>udt_catalog</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the database that the column data type (the underlying
       type of the domain, if applicable) is defined in (always the
       current database)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>udt_schema</structfield> <type>sql_identifier</type>
      </para>
      <para>
       Name of the schema that the column data type (the underlying
       type of the domain, if applicable)