<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/comment.sgml,v 1.2 1999/10/26 03:53:35 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/comment.sgml,v 1.3 1999/10/26 16:36:28 momjian Exp $
Postgres documentation
-->
<command>COMMENT</command> adds a comment to an object that can be
easily retrieved with <application>psql's</application>
<emphasize>\dd</emphasize> command.
- To remove a comment, use <literal>''</literal>.
+ To remove a comment, use <literal>NULL</literal>.
Comments are automatically dropped when the object is dropped.
</para>
</refsect1>