diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 260d47032a..a50503e24b 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -14,8 +14,9 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_math.py -Q 2
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_time.py -Q 2
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery.py -Q 2
-,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 2
-,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 3
+#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py 
+#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 2
+#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_str.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_math.py -Q 3
@@ -24,7 +25,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_str.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_math.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_time.py -Q 4
-,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 4
+#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/columnLenUpdated.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqShow.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqDropStb.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/subscribeStb0.py
diff --git a/tests/system-test/2-query/columnLenUpdated.py b/tests/system-test/2-query/columnLenUpdated.py
index d6940fde8b..ea01cd623c 100644
--- a/tests/system-test/2-query/columnLenUpdated.py
+++ b/tests/system-test/2-query/columnLenUpdated.py
@@ -147,9 +147,9 @@ class TDTestCase:
         tdSql.checkData(1, 1, '55555')
 
 
-        tdSql.query("create table stb (ts timestamp, f1 int) tags (tg1 binary(2))")
+        tdSql.query("create table stb (ts timestamp, f1 int, f2 binary(2)) tags (tg1 binary(2))")
         tdSql.query("create table tb1 using stb tags('bb')")
-        tdSql.query("insert into tb1 values (now, 2)")
+        tdSql.query("insert into tb1 values (now, 2,'22')")
         tdSql.query("select count(*) from stb group by tg1")
         tdSql.checkData(0, 0, 1)
 
@@ -163,13 +163,23 @@ class TDTestCase:
         if retCode != "TAOS_OK":
             tdLog.exit("taos -s fail")
 
-        keyDict['s'] = "\"insert into db1.tb2 values (now, 2)\""
+        keyDict['s'] = "\"insert into db1.tb2 values (now, 2,'22')\""
+        retCode = taos_command(buildPath, "s", keyDict['s'], "Insert OK", '')
+        if retCode != "TAOS_OK":
+            tdLog.exit("taos -s fail")
+
+        keyDict['s'] = "\"alter table db1.stb modify column f2 binary(5) \""
+        retCode = taos_command(buildPath, "s", keyDict['s'], "Query OK", '')
+        if retCode != "TAOS_OK":
+            tdLog.exit("taos -s fail")
+
+        keyDict['s'] = "\"insert into db1.tb2 values (now, 3,'55555')\""
         retCode = taos_command(buildPath, "s", keyDict['s'], "Insert OK", '')
         if retCode != "TAOS_OK":
             tdLog.exit("taos -s fail")
 
         tdSql.query("select count(*) from stb group by tg1")
-        tdSql.checkData(0, 0, 1)
+        tdSql.checkData(0, 0, 2)
         tdSql.checkData(1, 0, 1)