SQLD · 제58회 · 46번

create table t1 (no number);
insert into t1 values (1);
insert into t1 values (2);
savepoint sv1;
update t1 set no=4 where no=1;
savepoint sv1;
delete from t1 where no >= 2;
rollback to sv1;
insert into t1 values(3);
commit;
select max(no) from t1;