diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index cbbd874bb9..55a8f16698 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -1724,6 +1724,9 @@ static void destroyStateWindowOperatorInfo(void* param) {
   cleanupBasicInfo(&pInfo->binfo);
   taosMemoryFreeClear(pInfo->stateKey.pData);
   cleanupExprSupp(&pInfo->scalarSup);
+  colDataDestroy(&pInfo->twAggSup.timeWindowData);
+  cleanupAggSup(&pInfo->aggSup);
+  cleanupGroupResInfo(&pInfo->groupResInfo);
 
   taosMemoryFreeClear(param);
 }
diff --git a/source/libs/scalar/src/scalar.c b/source/libs/scalar/src/scalar.c
index 1f09fd4799..cc1949f17d 100644
--- a/source/libs/scalar/src/scalar.c
+++ b/source/libs/scalar/src/scalar.c
@@ -629,6 +629,8 @@ _return:
   
   sclFreeParam(pWhen);
   sclFreeParam(pThen);
+  taosMemoryFree(pWhen);
+  taosMemoryFree(pThen);
 
   SCL_RET(code);
 }
@@ -664,6 +666,8 @@ int32_t sclWalkWhenList(SScalarCtx *ctx, SNodeList* pList, struct SListCell* pCe
 
     sclFreeParam(pWhen);
     sclFreeParam(pThen);
+    taosMemoryFreeClear(pWhen);
+    taosMemoryFreeClear(pThen);
   }
 
   if (pElse) {
@@ -688,6 +692,8 @@ _return:
 
   sclFreeParam(pWhen);
   sclFreeParam(pThen);
+  taosMemoryFree(pWhen);
+  taosMemoryFree(pThen);
 
   SCL_RET(code);
 }
@@ -929,6 +935,10 @@ int32_t sclExecCaseWhen(SCaseWhenNode *node, SScalarCtx *ctx, SScalarParam *outp
   sclFreeParam(&comp);
   sclFreeParam(pWhen);
   sclFreeParam(pThen);
+  taosMemoryFree(pCase);
+  taosMemoryFree(pElse);
+  taosMemoryFree(pWhen);
+  taosMemoryFree(pThen);
 
   return TSDB_CODE_SUCCESS;
 
@@ -940,6 +950,10 @@ _return:
   sclFreeParam(pWhen);
   sclFreeParam(pThen);
   sclFreeParam(output);
+  taosMemoryFree(pCase);
+  taosMemoryFree(pElse);
+  taosMemoryFree(pWhen);
+  taosMemoryFree(pThen);
 
   SCL_RET(code);
 }
diff --git a/source/libs/scalar/src/sclvector.c b/source/libs/scalar/src/sclvector.c
index f467721248..91039ed577 100644
--- a/source/libs/scalar/src/sclvector.c
+++ b/source/libs/scalar/src/sclvector.c
@@ -654,7 +654,7 @@ int32_t vectorConvertSingleColImpl(const SScalarParam* pIn, SScalarParam* pOut,
     return TSDB_CODE_APP_ERROR;
   }
 
-  int32_t rstart = startIndex >= 0 ? startIndex : 0;
+  int32_t rstart = (startIndex >= 0 && startIndex < pIn->numOfRows) ? startIndex : 0;
   int32_t rend = numOfRows > 0 ? rstart + numOfRows - 1 : rstart + pIn->numOfRows - 1;
   SSclVectorConvCtx cCtx = {pIn, pOut, rstart, rend, pInputCol->info.type, pOutputCol->info.type};