diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 12f72ba43f50f61de61cae0e655064ac9d7808a2..9b519c7e4e4a1aff20d2527a4162179c9540d787 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1886,7 +1886,6 @@ static int32_t handleAggregateExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_
   pSqlExpr->param[0].nType = TSDB_DATA_TYPE_BINARY;
 
 //    tbufCloseWriter(&bw); // TODO there is a memory leak
-  tExprTreeDestroy(pInfo->pExpr->pExpr, NULL);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/common/inc/texpr.h b/src/common/inc/texpr.h
index 29e7df6a297fddd1729550a83ac8491ba2c45e8a..4aaff98b17e362c61699d86ad4fad33d636475f1 100644
--- a/src/common/inc/texpr.h
+++ b/src/common/inc/texpr.h
@@ -115,7 +115,7 @@ typedef struct tExprNode {
     struct {
       int16_t functionId;
       uint8_t numChildren;
-      struct tExprNode** pChildren;
+      struct tExprNode **pChildren;
     } _func;
   };
   int16_t resultType;
diff --git a/src/common/src/texpr.c b/src/common/src/texpr.c
index 37244e208a8fbd2e3f52e7b05a1d62a86c909212..2176784aa3d61a4858e6b0f926cf58d9235c0cdc 100644
--- a/src/common/src/texpr.c
+++ b/src/common/src/texpr.c
@@ -956,6 +956,8 @@ tExprNode* exprdup(tExprNode* pNode) {
   }
 
   pCloned->nodeType = pNode->nodeType;
+  pCloned->resultType = pNode->resultType;
+  pCloned->resultBytes = pNode->resultBytes;
   return pCloned;
 }