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-rw-r--r--doc/src/sgml/ref/alter_table.sgml11
1 files changed, 10 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 29213b96a51..ef58e94a442 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -1,5 +1,5 @@
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.36 2002/02/16 23:45:48 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.37 2002/02/17 11:50:09 momjian Exp $
PostgreSQL documentation
-->
@@ -295,6 +295,15 @@ ALTER TABLE distributors ADD CONSTRAINT dist_id_zipcode_key UNIQUE (dist_id, zip
</para>
</refsect1>
+ <para>
+ To add an automatically named primary key constraint to a table, noting
+ that a table can only ever have one primary key:
+ <programlisting>
+ALTER TABLE distributors ADD PRIMARY KEY (dist_id);
+ </programlisting>
+ </para>
+ </refsect1>
+
<refsect1 id="R1-SQL-ALTERTABLE-3">
<title>
Compatibility