Merge pull request #15129 from taosdata/szhou/fix/td-17429

fix: filter shall not be executed when the input block is empty

source/client/src/clientImpl.c

@@ -2093,8 +2093,9 @@ TAOS_RES* taosQueryImpl(TAOS* taos, const char* sql, bool validateOnly) {
 
   taosAsyncQueryImpl(*(int64_t*)taos, sql, syncQueryFn, param, validateOnly);
   tsem_wait(&param->sem);
-
-  param->pRequest->syncQuery = true;
+  if (param->pRequest != NULL) {
+    param->pRequest->syncQuery = true;
+  }
   return param->pRequest;
 #else
   size_t sqlLen = strlen(sql);

source/libs/executor/src/executorimpl.c

@@ -1337,7 +1337,9 @@ void doFilter(const SNode* pFilterNode, SSDataBlock* pBlock) {
   if (pFilterNode == NULL) {
     return;
   }
-
+  if (pBlock->info.rows == 0) {
+    return;
+  }
   SFilterInfo* filter = NULL;
 
   // todo move to the initialization function