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set default_storage_engine=tokudb;
drop table if exists t;
create table t (id int, unique key(id));
insert into t values (10),(100);
begin;
insert into t values (50);
begin;
insert into t values (60);
commit;
commit;
select * from t;
id
10
50
60
100
drop table if exists t;
create table t (id int not null, unique key(id));
insert into t values (10),(100);
begin;
insert into t values (50);
begin;
insert into t values (60);
commit;
commit;
select * from t;
id
10
50
60
100
drop table if exists t;
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