diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 3a02eb3ef241a352049e0c54489d5164010d1ff3..e00a883a78b43e998286154cd93eeb4404f7d484 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1862,7 +1862,6 @@ static void addProjectQueryCol(SQueryInfo* pQueryInfo, int32_t startPos, SColumn
     assert(right != NULL && right->type == SQL_NODE_VALUE);
     tVariantAssign(&(pExpr->base.param[pExpr->base.numOfParams]), &right->value);
     pExpr->base.numOfParams++;
-    pExpr->base.resType = TSDB_DATA_TYPE_BINARY;     // tag-> operation transform result type
     assert(pExpr->base.numOfParams <= 3);
   }