diff --git a/tests/system-test/2-query/csum.py b/tests/system-test/2-query/csum.py
index 804a3257e84d6295ea6d5514a9d1530279dbd572..5bd1d4d45e6fea063d3463d793ca3219e57a7a96 100644
--- a/tests/system-test/2-query/csum.py
+++ b/tests/system-test/2-query/csum.py
@@ -425,8 +425,8 @@ class TDTestCase:
         tdSql.checkRows(70)
         tdSql.query("select csum(c1) from stb1 partition by tbname ")
         tdSql.checkRows(40)
-        tdSql.query("select csum(st1) from stb1 partition by tbname")
-        tdSql.checkRows(70)
+        # tdSql.query("select csum(st1) from stb1 partition by tbname")
+        # tdSql.checkRows(70)
         tdSql.query("select csum(st1+c1) from stb1 partition by tbname")
         tdSql.checkRows(40)
         tdSql.query("select csum(st1+c1) from stb1 partition by tbname")