text: -- NOTE: database = currentDatabase() is not mandatory
  
  SELECT avg(blockSize()) <= 10 FROM system.tables SETTINGS max_block_size = 10;
  SELECT avg(blockSize()) <= 10 FROM system.tables LIMIT 10 SETTINGS max_block_size = 10;
  SELECT (SELECT count() FROM system.tables SETTINGS max_block_size = 10) = (SELECT count() FROM system.tables SETTINGS max_block_size = 9);
  SELECT (SELECT count() FROM system.tables SETTINGS max_block_size = 100) = (SELECT count() FROM system.tables SETTINGS max_block_size = 1000);
  
  DROP TEMPORARY TABLE IF EXISTS t_00693;
  CREATE TEMPORARY TABLE t_00693 (x UInt8);
  SELECT database, name, engine, is_temporary, data_paths, metadata_path, toTimeZone(metadata_modification_time, 'UTC'), dependencies_database,
         dependencies_table, create_table_query, engine_full, partition_key, sorting_key, primary_key, sampling_key, storage_policy,
         total_rows, total_bytes FROM system.tables WHERE is_temporary AND name='t_00693';
  
  SELECT avg(blockSize()) <= 10000 FROM system.columns SETTINGS max_block_size = 10;
  SELECT avg(blockSize()) <= 10000 FROM system.columns LIMIT 10 SETTINGS max_block_size = 10;
  SELECT (SELECT count() FROM system.columns SETTINGS max_block_size = 10) = (SELECT count() FROM system.columns SETTINGS max_block_size = 9);
  SELECT (SELECT count() FROM system.columns SETTINGS max_block_size = 100) = (SELECT count() FROM system.columns SETTINGS max_block_size = 1000);
  SELECT (SELECT count() FROM system.columns SETTINGS max_block_size = 13) = (SELECT count() FROM system.columns SETTINGS max_block_size = 1000000);
  