USE tpch1;
select * from nation where n_nationkey=@value;
n_nationkey	n_name	n_regionkey	n_comment
set @value=5;
select * from nation where n_nationkey=@value;
n_nationkey	n_name	n_regionkey	n_comment
5	ETHIOPIA	0	ven packages wake quickly. regu
create table if not exists bug3024 (c1 int) engine=columnstore;
insert into bug3024 values (1), (2);
update bug3024 set c1=3 where c1=@value;
set @value=2;
update bug3024 set c1=3 where c1=@value;
select * from bug3024;
c1
1
3
drop table if exists bug3024;