diff --git a/src/site/xdoc/doc_jpa.xml b/src/site/xdoc/doc_jpa.xml
index 9b21831bdca..2a5b3aabf52 100644
--- a/src/site/xdoc/doc_jpa.xml
+++ b/src/site/xdoc/doc_jpa.xml
@@ -239,6 +239,10 @@ public DaoConfig daoConfig() {
 			
 		</section>
 		
+		<!-- 
+		alter table hfj_res_link ALTER COLUMN "TARGET_RESOURCE_ID" NULL;
+		 -->
+				
 	</body>
 
 </document>