--- a/mee.install	Fri Sep 18 15:18:53 2009 +0200
+++ b/mee.install	Fri Nov 20 09:57:07 2009 +0100
@@ -42,6 +42,14 @@
   return $ret;
 }
 
+/**
+ * Include the 'field' field in the primary key.
+ */
+function mee_update_6002() {
+  $ret = array();
+  $ret[] = update_sql("ALTER TABLE {mee_ressources} DROP PRIMARY KEY, ADD PRIMARY KEY(content_nid, atom_sid, field)");
+  return $ret;
+}
 
 /**
  * Implementation of hook_schema().
@@ -55,7 +63,7 @@
 	      'weight' => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
 	      'required' => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
 	    ),
-	    'primary key' => array('content_nid', 'atom_sid'),
+	    'primary key' => array('content_nid', 'atom_sid', 'field'),
 	  );
 	
 	  return $schema;