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Add mention of NULL for COMMENT.
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@ -1,5 +1,5 @@
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<!--
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/comment.sgml,v 1.2 1999/10/26 03:53:35 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/comment.sgml,v 1.3 1999/10/26 16:36:28 momjian Exp $
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Postgres documentation
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Postgres documentation
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-->
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-->
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@ -102,7 +102,7 @@ COMMENT
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<command>COMMENT</command> adds a comment to an object that can be
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<command>COMMENT</command> adds a comment to an object that can be
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easily retrieved with <application>psql's</application>
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easily retrieved with <application>psql's</application>
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<emphasize>\dd</emphasize> command.
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<emphasize>\dd</emphasize> command.
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To remove a comment, use <literal>''</literal>.
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To remove a comment, use <literal>NULL</literal>.
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Comments are automatically dropped when the object is dropped.
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Comments are automatically dropped when the object is dropped.
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</para>
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</para>
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</refsect1>
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</refsect1>
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