diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 497681ded16a25a3d7782591f0e7401ab01c5918..1fc0f5ff51636bfb10fafc26a75ab5bc523688aa 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -348,6 +348,8 @@ int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId,
   taosThreadOnce(&initPoolOnce, initRefPool);
   atexit(cleanupRefPool);
 
+  qDebug("start to create subplan task, TID:0x%"PRIx64 " QID:0x%"PRIx64, taskId, pSubplan->id.queryId);
+
   int32_t code = createExecTaskInfoImpl(pSubplan, pTask, readHandle, taskId, sql, model);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
@@ -372,6 +374,8 @@ int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId,
     }
   }
 
+  qDebug("subplan task create completed, TID:0x%"PRIx64 " QID:0x%"PRIx64, taskId, pSubplan->id.queryId);
+
 _error:
   // if failed to add ref for all tables in this query, abort current query
   return code;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index e401a1bd96f53252db51e2a6f69a4468ef59e63e..a0f2560e7bf684ec6b637622cb5d682ca952a483 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -343,6 +343,9 @@ static int32_t loadDataBlock(SOperatorInfo* pOperator, STableScanInfo* pTableSca
     }
   }
 
+  // free the sma info, since it should not be involved in later computing process.
+  taosMemoryFreeClear(pBlock->pBlockAgg);
+
   // try to filter data block according to current results
   doDynamicPruneDataBlock(pOperator, pBlockInfo, status);
   if (*status == FUNC_DATA_REQUIRED_NOT_LOAD) {
diff --git a/tests/script/tsim/parser/limit1_tb.sim b/tests/script/tsim/parser/limit1_tb.sim
index 1ef6a62291ed457d7edbe6eddda4a7086d0a1219..36c91fe4c7a16e516be4aa433984b6e7f959d7f2 100644
--- a/tests/script/tsim/parser/limit1_tb.sim
+++ b/tests/script/tsim/parser/limit1_tb.sim
@@ -263,6 +263,9 @@ sql select sum(c1), avg(c2), stddev(c3), max(c4), min(c5), count(c6), first(c7),
 if $rows != 0 then
   return -1
 endi
+
+print select sum(c1), avg(c2), stddev(c3), max(c4), min(c5), count(c6), first(c7), last(c8), last(c9) from $tb where ts >= $ts0 and ts <= $tsu and c1>1 and c2<9 and c3>2 and c4<8 and c5>4 and c6<6 limit 1 offset 0
+
 sql select sum(c1), avg(c2), stddev(c3), max(c4), min(c5), count(c6), first(c7), last(c8), last(c9) from $tb where ts >= $ts0 and ts <= $tsu and c1>1 and c2<9 and c3>2 and c4<8 and c5>4 and c6<6 limit 1 offset 0
 if $rows != 1 then
   return -1
@@ -270,6 +273,7 @@ endi
 $val = $rowNum / 10
 $val = $val * 5
 if $data00 != $val then
+  print $data00, expect $val
   return -1
 endi
 if $data01 != 5.000000000 then
diff --git a/tests/script/tsim/parser/mixed_blocks.sim b/tests/script/tsim/parser/mixed_blocks.sim
index 76ac7c1c548ce51ed0b32c36594214f67b31e046..80cdfcac99d1d0648604a6e061025fd0c2f28acb 100644
--- a/tests/script/tsim/parser/mixed_blocks.sim
+++ b/tests/script/tsim/parser/mixed_blocks.sim
@@ -92,6 +92,7 @@ if $data03 != 319 then
   return -1
 endi
 if $data04 != 318.000000000 then
+  print expect 318.000000000, actual: $data04
   return -1
 endi
 if $data05 != 1 then