diff --git a/packaging/cfg/taos.cfg b/packaging/cfg/taos.cfg
index ccce496d2dc0767ed65b54415d6c9b096a839875..b7b30ac1e07719af45b81c2e8c1b93e281485215 100644
--- a/packaging/cfg/taos.cfg
+++ b/packaging/cfg/taos.cfg
@@ -36,6 +36,9 @@
 # 0.0: only one core available.
 # tsRatioOfQueryCores       1.0
 
+# the last_row/first/last aggregator will not change the original column name in the result fields
+# keepColumnName            0
+
 # number of management nodes in the system
 # numOfMnodes               3