fix bug

source/libs/parser/src/parTranslater.c

@@ -3548,7 +3548,7 @@ static int32_t translateInterp(STranslateContext* pCxt, SSelectStmt* pSelect) {
   }
 
   if (NULL == pSelect->pRange || NULL == pSelect->pEvery || NULL == pSelect->pFill) {
-    if (QUERY_NODE_OPERATOR == nodeType(pSelect->pRange) && pSelect->pEvery == NULL) {
+    if (pSelect->pRange != NULL && QUERY_NODE_OPERATOR == nodeType(pSelect->pRange) && pSelect->pEvery == NULL) {
       // single point interp every can be omitted
     } else {
       return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_INTERP_CLAUSE,