diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 70fa6e4995..ace84c5f9a 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -588,7 +588,7 @@ void getDBNameFromCondition(SNode* pCondition, char* dbName) {
     return;
   }
 
-  nodesWalkNode(pCondition, getDBNameFromConditionWalker, dbName);
+  nodesWalkExpr(pCondition, getDBNameFromConditionWalker, dbName);
 }
 
 static int32_t loadSysTableContentCb(void* param, const SDataBuf* pMsg, int32_t code) {
diff --git a/source/libs/scalar/src/sclfunc.c b/source/libs/scalar/src/sclfunc.c
index c02729a084..fbb6f158b6 100644
--- a/source/libs/scalar/src/sclfunc.c
+++ b/source/libs/scalar/src/sclfunc.c
@@ -687,6 +687,7 @@ int32_t charLengthFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam
   return doLengthFunction(pInput, inputNum, pOutput, tcharlength);
 }
 
+#if 0
 static void reverseCopy(char* dest, const char* src, int16_t type, int32_t numOfRows) {
   switch(type) {
     case TSDB_DATA_TYPE_TINYINT:
@@ -751,6 +752,7 @@ static void reverseCopy(char* dest, const char* src, int16_t type, int32_t numOf
     default: assert(0);
   }
 }
+#endif
 
 bool getTimePseudoFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv) {
   pEnv->calcMemSize = sizeof(int64_t);