diff --git a/xls2ddl/tmpls.py b/xls2ddl/tmpls.py
index fc55aeb..7ebce12 100644
--- a/xls2ddl/tmpls.py
+++ b/xls2ddl/tmpls.py
@@ -450,7 +450,8 @@ async with db.sqlorContext(dbname) as sor:
 			}
 		}
 {% endif %}
-	other_keys = [ k for k in ns.keys() if k != 'id' ]
+	tblfields = {{json.dumps([ f.name for f in fields ])}}
+	other_keys = [ k for k in ns.keys() if k in tblfields and k != 'id' ]
 	if len(other_keys) > 0:
 		r = await sor.U('{{summary[0].name}}', ns)
 	debug('update success');