Remove optimiation for NULLs

Author: ianton-ru

src/Storages/ObjectStorage/StorageObjectStorageSource.cpp

@@ -646,7 +646,7 @@ StorageObjectStorageSource::ReaderHolder StorageObjectStorageSource::createReade
                     }
                 }
             }
-
+/*
             for (const auto & column : requested_columns_list)
             {
                 const auto & column_name = column.first;
@@ -671,6 +671,7 @@ StorageObjectStorageSource::ReaderHolder StorageObjectStorageSource::createReade
                     column.second.first,
                     column.second.second.type);
             }
+*/
         }
 
         if (!constant_columns.empty())

tests/integration/test_storage_iceberg/test.py

@@ -3689,11 +3689,11 @@ def get_events(query_id, event):
     events_all_data_optimized = get_events(all_data_query_id, event) # 1-2025, 6-2025 must not be read
     events_const_only_optimized = get_events(const_only_query_id, event) # All must not be read
     events_const_partial_optimized = get_events(const_partial_query_id, event) # 1-2025, 6-2025 and 2-2025 must not be read
-    events_const_partial2_optimized = get_events(const_partial2_query_id, event) # 1-2024, 1-2025, 2-2025 and 6-2025 must not be read
+    events_const_partial2_optimized = get_events(const_partial2_query_id, event) # 6-2025 must not be read, 1-2024, 1-2025, 2-2025 readed because of nulls
     events_count_optimized = get_events(count_query_id, event) # All must not be read
 
-    assert events_all_data_optimized == 5
+    assert events_all_data_optimized == 6 # 5
     assert events_const_only_optimized == 0
     assert events_const_partial_optimized == 4
-    assert events_const_partial2_optimized == 3
+    assert events_const_partial2_optimized == 6
     assert events_count_optimized == 0