diff --git a/source/libs/nodes/src/nodesCloneFuncs.c b/source/libs/nodes/src/nodesCloneFuncs.c
index 12cd6f1bc1..60692323f5 100644
--- a/source/libs/nodes/src/nodesCloneFuncs.c
+++ b/source/libs/nodes/src/nodesCloneFuncs.c
@@ -141,12 +141,12 @@ static SNode* valueNodeCopy(const SValueNode* pSrc, SValueNode* pDst) {
     case TSDB_DATA_TYPE_NCHAR:
     case TSDB_DATA_TYPE_VARCHAR:
     case TSDB_DATA_TYPE_VARBINARY:
-      pDst->datum.p = malloc(pSrc->node.resType.bytes + VARSTR_HEADER_SIZE);
+      pDst->datum.p = malloc(pSrc->node.resType.bytes + VARSTR_HEADER_SIZE + 1);
       if (NULL == pDst->datum.p) {
         nodesDestroyNode(pDst);
         return NULL;
       }
-      memcpy(pDst->datum.p, pSrc->datum.p, pSrc->node.resType.bytes + VARSTR_HEADER_SIZE);
+      memcpy(pDst->datum.p, pSrc->datum.p, pSrc->node.resType.bytes + VARSTR_HEADER_SIZE + 1);
       break;
     case TSDB_DATA_TYPE_JSON:
     case TSDB_DATA_TYPE_DECIMAL:
diff --git a/source/libs/nodes/src/nodesCodeFuncs.c b/source/libs/nodes/src/nodesCodeFuncs.c
index e8576fc897..606bef6b89 100644
--- a/source/libs/nodes/src/nodesCodeFuncs.c
+++ b/source/libs/nodes/src/nodesCodeFuncs.c
@@ -1418,6 +1418,7 @@ static int32_t datumToJson(const void* pObj, SJson* pJson) {
     case TSDB_DATA_TYPE_VARCHAR:
     case TSDB_DATA_TYPE_VARBINARY:
       code = tjsonAddStringToObject(pJson, jkValueDatum, varDataVal(pNode->datum.p));
+      nodesDebug("!!!!!!!!tojson, value:%s", varDataVal(pNode->datum.p));
       break;
     case TSDB_DATA_TYPE_JSON:
     case TSDB_DATA_TYPE_DECIMAL:
@@ -2429,11 +2430,4 @@ int32_t nodesStringToList(const char* pStr, SNodeList** pList) {
   if (NULL == pJson) {
     return TSDB_CODE_FAILED;
   }
-  int32_t code = jsonToNodeListImpl(pJson, pList);
-  if (TSDB_CODE_SUCCESS != code) {
-    nodesDestroyList(*pList);
-    terrno = code;
-    return code;
-  }
-  return TSDB_CODE_SUCCESS;
-}
+  int32_t 
\ No newline at end of file
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index bf241eb772..b058aa672b 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -404,7 +404,6 @@ static EDealRes translateValue(STranslateContext* pCxt, SValueNode* pVal) {
         }
         varDataSetLen(pVal->datum.p, pVal->node.resType.bytes);
         strncpy(varDataVal(pVal->datum.p), pVal->literal, pVal->node.resType.bytes);
-        parserDebug("varchar value:%s,len:%d", pVal->literal, pVal->node.resType.bytes);
         break;
       }
       case TSDB_DATA_TYPE_TIMESTAMP: {