[TD-4240]<fix>: taosdemo subscribe more than max query sql count. (#6154)

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdemo/taosdemo.c

@@ -6575,6 +6575,15 @@ static void *superSubscribe(void *sarg) {
   if (g_queryInfo.superQueryInfo.sqlCount == 0)
     return NULL;
 
+  if (g_queryInfo.superQueryInfo.sqlCount * pThreadInfo->ntables > MAX_QUERY_SQL_COUNT) {
+      errorPrint("The number %"PRId64" of sql count(%"PRIu64") multiple the table number(%"PRId64") of the thread is more than max query sql count: %d\n",
+              g_queryInfo.superQueryInfo.sqlCount * pThreadInfo->ntables,
+              g_queryInfo.superQueryInfo.sqlCount,
+              pThreadInfo->ntables,
+              MAX_QUERY_SQL_COUNT);
+      exit(-1);
+  }
+
   if (pThreadInfo->taos == NULL) {
     TAOS * taos = NULL;
     taos = taos_connect(g_queryInfo.host,