text: drop table if exists a8x;
  
  set empty_result_for_aggregation_by_empty_set=1;
  create table a8x ENGINE = MergeTree ORDER BY tuple() settings min_bytes_for_wide_part=0 as SELECT number FROM system.numbers limit 100;
  
  select count() from a8x;
  
  set mutations_sync=1;
  alter table a8x update number=0 WHERE number=-3;
  
  select count() from a8x;
  drop table if exists a8x;
  