[CP] fix parent_namespace_stmt_ bug for direct nested view, remove some debug...

[CP] fix parent_namespace_stmt_ bug for direct nested view, remove some debug log may may print null pointer

src/sql/engine/aggregate/ob_aggregate_processor.cpp

@@ -3180,7 +3180,6 @@ int ObAggregateProcessor::collect_aggr_result(
         if (ret == OB_ITER_END && 0 == not_null_start_loc) {
           ret = OB_SUCCESS;
           result.set_null();
-          LOG_DEBUG("result is null", K(*storted_row), K(row_cnt));
         } else if (OB_FAIL(ret)) {
           LOG_WARN("failed to get dest loc row", K(ret), K(dest_loc), K(row_cnt));
         } else if (OB_FAIL(prev_row.save_store_row(*storted_row))) {

src/sql/resolver/dml/ob_view_table_resolver.cpp

@@ -70,6 +70,7 @@ int ObViewTableResolver::expand_view(TableItem &view_item)
       view_resolver.set_view_ref_id(view_item.ref_id_);
       view_resolver.set_current_view_item(view_item);
       view_resolver.set_parent_view_resolver(this);
+      view_resolver.set_parent_namespace_resolver(parent_namespace_resolver_);
       if (OB_FAIL(do_expand_view(view_item, view_resolver))) {
         LOG_WARN("do expand view failed", K(ret));
       }