diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index c4c3722455..78f012cb98 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -711,6 +711,7 @@ static void initNextGroupScan(STableScanInfo* pInfo, STableKeyInfo** pKeyInfo, i
   pInfo->tableStartIndex = TARRAY_ELEM_IDX(pInfo->base.pTableListInfo->pTableList, *pKeyInfo);
   pInfo->tableEndIndex = (pInfo->tableStartIndex + (*size) - 1);
   pInfo->pResBlock->info.blankFill = false;
+  taosMemoryFreeClear(pInfo->pResBlock->pBlockAgg);
 
   if (!pInfo->needCountEmptyTable) {
     pInfo->countState = TABLE_COUNT_STATE_END;
diff --git a/tests/system-test/2-query/count.py b/tests/system-test/2-query/count.py
index 2f82ece0ec..155cb39b62 100644
--- a/tests/system-test/2-query/count.py
+++ b/tests/system-test/2-query/count.py
@@ -257,7 +257,18 @@ class TDTestCase:
         os.system(f'taos -f {sql_file}')
         tdSql.query('select count(c_1) from d2.t2 where c_1 < 10', queryTimes=1)
         tdSql.checkData(0, 0, 0)
-        tdSql.execute('drop database d2')
+        tdSql.query('select count(c_1), min(c_1),tbname from d2.can partition by tbname', queryTimes=1)
+        tdSql.checkData(0, 0, 0)
+        tdSql.checkData(0, 1, None)
+        tdSql.checkData(0, 2, 't3')
+
+        tdSql.checkData(1, 0, 15)
+        tdSql.checkData(1, 1, 1471617148940980000)
+        tdSql.checkData(1, 2, 't2')
+
+        tdSql.checkData(2, 0, 0)
+        tdSql.checkData(2, 1, None)
+        tdSql.checkData(2, 2, 't1')
 
     def run(self):
         self.test_count_with_sma_data()