diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 75a81c2096905b07b6c8bb3dd6a731b9e4f621b3..8d51ffc5774c4e1b3ee3eec539a6f646e657404b 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -8017,7 +8017,8 @@ int32_t exprTreeFromSqlExpr(SSqlCmd* pCmd, tExprNode **pExpr, const tSqlExpr* pS
       if (pCols != NULL) {
         SColIndex* idx = taosArrayGet(pCols, 0);
         SSchema* pSchema = tscGetTableColumnSchema(pTableMeta, idx->colIndex);
-        if (pSchema != NULL && pSchema->type == TSDB_DATA_TYPE_TIMESTAMP) {
+        // convert time by precision 
+        if (pSchema != NULL && TSDB_DATA_TYPE_TIMESTAMP == pSchema->type && TSDB_DATA_TYPE_BINARY == (*pExpr)->pVal->nType) {
           ret = setColumnFilterInfoForTimestamp(pCmd, pQueryInfo, (*pExpr)->pVal);
         }
       }