diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index f44262224d..1ac327de7f 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -3905,7 +3905,6 @@ int32_t doMergeMemIMemRows(TSDBROW* pRow, TSDBROW* piRow, STableBlockScanInfo* p
       return code;
     }
 
-    pSchema = doGetSchemaForTSRow(TSDBROW_SVERSION(pRow), pReader, pBlockScanInfo->uid);
     tsdbRowMergerAdd(&merge, pRow, pSchema);
     code =
         doMergeRowsInBuf(&pBlockScanInfo->iter, pBlockScanInfo->uid, k.ts, pBlockScanInfo->delSkyline, &merge, pReader);
diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index 16a5ef7bae..8fee17d968 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -2279,7 +2279,7 @@ static int32_t lastRowScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogic
   if (NULL != cxt.pLastCols) {
     cxt.doAgg = false;
     lastRowScanOptSetLastTargets(pScan->pScanCols, cxt.pLastCols);
-    nodesWalkExprs(pScan->pScanPseudoCols, lastRowScanOptSetColDataType, &cxt);
+    NODES_DESTORY_LIST(pScan->pScanPseudoCols);
     lastRowScanOptSetLastTargets(pScan->node.pTargets, cxt.pLastCols);
     nodesClearList(cxt.pLastCols);
   }