diff --git a/source/libs/executor/src/projectoperator.c b/source/libs/executor/src/projectoperator.c
index dd7f9b77f3..de353b4bac 100644
--- a/source/libs/executor/src/projectoperator.c
+++ b/source/libs/executor/src/projectoperator.c
@@ -317,7 +317,7 @@ SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
 
     if (pProjectInfo->mergeDataBlocks) {
       if (pRes->info.rows > 0) {
-        pFinalRes->info.id.groupId = pRes->info.id.groupId;
+        pFinalRes->info.id.groupId = 0;  //clear groupId
         pFinalRes->info.version = pRes->info.version;
 
         // continue merge data, ignore the group id
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 0f6ade4fbe..8d2e927552 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -175,6 +175,7 @@
 ,,y,script,./test.sh -f tsim/query/session.sim
 ,,y,script,./test.sh -f tsim/query/udf.sim
 ,,y,script,./test.sh -f tsim/query/udf_with_const.sim
+,,y,script,./test.sh -f tsim/query/groupby.sim
 ,,y,script,./test.sh -f tsim/qnode/basic1.sim
 ,,y,script,./test.sh -f tsim/snode/basic1.sim
 ,,y,script,./test.sh -f tsim/mnode/basic1.sim
diff --git a/tests/script/tsim/query/groupby.sim b/tests/script/tsim/query/groupby.sim
new file mode 100644
index 0000000000..03bea4d047
--- /dev/null
+++ b/tests/script/tsim/query/groupby.sim
@@ -0,0 +1,23 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+
+sql drop database if exists db1;
+sql create database db1;
+sql use db1;
+sql create table test(pos_time TIMESTAMP,target_id INT ,data DOUBLE) tags(scene_id BIGINT,data_stage VARCHAR(64),data_source VARCHAR(64));
+
+sql insert into _413254290_108_1001_ using test tags(108,'1001','') values(1667232060000,413254290,1);
+sql insert into _413254290_108_1001_ using test tags(108,'1001','') values(1667232061000,413254290,2);
+sql insert into _413254290_108_1001_ using test tags(108,'1001','') values(1667232062000,413254290,3);
+sql insert into _413254000_108_1001_ using test tags(109,'1001','') values(1667232060000,413254290,3);
+sql insert into _413254000_108_1001_ using test tags(109,'1001','') values(1667232062000,413254290,3);
+
+sql select target_name,max(time_diff) AS time_diff,(count(1)) AS track_count from (select tbname as target_name,diff(pos_time) time_diff from test where tbname in ('_413254290_108_1001_','_413254000_108_1001_') partition by tbname) a group by target_name;
+if $rows != 2 then
+  return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT