USE tpch1; set @@sql_select_limit=4; create table if not exists bug5054(id int)engine=columnstore; insert into bug5054 values (1),(2),(3),(4),(5),(6),(7),(8); update bug5054 set id=4 where id>5; select * from bug5054 order by 1; id 1 2 3 4 select count(*) from bug5054; count(*) 8 delete from bug5054 where id>3; select * from bug5054 order by 1; id 1 2 3 select count(*) from bug5054 order by 1; count(*) 3 insert into bug5054 select * from bug5054; select * from bug5054 order by 1; id 1 1 2 2 select count(*) from bug5054; count(*) 6 drop table bug5054;