diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 01a386427de505a51f5a08e6e6367ab7b0d2d6ca..fecfb74947dd95d64ae4787a3bc50c854f655db8 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -543,7 +543,9 @@ static EDealRes translateOperator(STranslateContext* pCxt, SOperatorNode* pOp) {
         TSDB_DATA_TYPE_BLOB == rdt.type) {
       return generateDealNodeErrMsg(pCxt, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)(pOp->pRight))->aliasName);
     }
-    if (TSDB_DATA_TYPE_TIMESTAMP == ldt.type && TSDB_DATA_TYPE_TIMESTAMP == rdt.type) {
+    if ((TSDB_DATA_TYPE_TIMESTAMP == ldt.type && TSDB_DATA_TYPE_TIMESTAMP == rdt.type) ||
+        (TSDB_DATA_TYPE_TIMESTAMP == ldt.type && IS_VAR_DATA_TYPE(rdt.type)) ||
+        (TSDB_DATA_TYPE_TIMESTAMP == rdt.type && IS_VAR_DATA_TYPE(ldt.type))) {
       return generateDealNodeErrMsg(pCxt, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)(pOp->pRight))->aliasName);
     }