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create or replace table dept (
dept_id int(10) primary key,
name varchar(100)
)
with system versioning;
create or replace table emp (
emp_id int(10) primary key,
dept_id int(10),
name varchar(100),
salary int(10),
constraint `dept-emp-fk`
foreign key (dept_id) references dept (dept_id)
on delete cascade
on update restrict
)
with system versioning;
select now() into @ts_0;
insert into dept (dept_id, name) values (10, "accounting");
commit;
select vtq_commit_ts(sys_trx_start) into @ts_1 from dept where dept_id=10;
insert into emp (emp_id, name, salary, dept_id) values (1, "bill", 1000, 10);
commit;
select vtq_commit_ts(sys_trx_start) into @ts_2 from emp where name="bill";
select * from emp;
update emp set salary=2000 where name="bill";
commit;
select vtq_commit_ts(sys_trx_start) into @ts_3 from emp where name="bill";
select * from emp;
select * from emp for system_time as of timestamp @ts_2;
select * from emp for system_time as of timestamp @ts_3;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id
system_time from timestamp @ts_1 to timestamp @ts_2;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id
system_time as of timestamp @ts_0;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id
system_time as of timestamp @ts_1;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id
system_time as of timestamp @ts_2;
select * from emp e, dept d
where d.dept_id = 10
and d.dept_id = e.dept_id
system_time as of timestamp @ts_3;
drop table emp, dept;
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