update order by

query_model.py

@@ -92,7 +92,7 @@ def simple_query(client, xq, IMG_DB_NAME, OBJ_DB_NAME, thresh=0.08, topk=10):
             FROM {OBJ_DB_NAME}
             JOIN {IMG_DB_NAME} 
             ON {IMG_DB_NAME}.img_id = {OBJ_DB_NAME}.img_id
-            {_thresh} ORDER BY dist LIMIT {topk}
+            {_thresh} ORDER BY dist DESC LIMIT {topk}
             """)
     subq_str = " UNION ALL ".join(subq_str)
     q_str = f"""