create table emp
(
  emp_id int,
  name varchar(127),
  mgr int
) with system versioning;

insert into emp values (1, 'bill', 0),
                       (2, 'bill', 1),
		       (3, 'kate', 1);
set @ts=now(6);
delete from emp;
insert into emp values (4, 'john', 1);

with ancestors as (select * from emp) select * from ancestors;
set @tmp= "with ancestors as (select * from emp) select * from ancestors";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

with ancestors as (select * from emp for system_time all) select * from ancestors;
set @tmp= "with ancestors as (select * from emp for system_time all) select * from ancestors";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

with recursive ancestors as (select * from emp) select * from ancestors;
set @tmp= "with recursive ancestors as (select * from emp) select * from ancestors";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

select emp_id from (select emp_id from emp where sys_trx_end>'2031-1-1') as tmp;
set @tmp= "select emp_id from (select emp_id from emp where sys_trx_end>'2031-1-1') as tmp";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

with recursive
ancestors
as
(
  select e.emp_id, e.name, e.mgr
  from emp as e
  where name = 'john'
  union
  select ee.emp_id, ee.name, ee.mgr
  from emp as ee, ancestors as a
  where ee.mgr = a.emp_id
)
select * from ancestors;
set @tmp= "
with recursive
ancestors
as
(
  select e.emp_id, e.name, e.mgr
  from emp as e
  where name = 'john'
  union
  select ee.emp_id, ee.name, ee.mgr
  from emp as ee, ancestors as a
  where ee.mgr = a.emp_id
)
select * from ancestors";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

with recursive
ancestors
as
(
  select e.emp_id, e.name, e.mgr
  from emp as e
  where name = 'bill'
  for system_time as of timestamp @ts
  union
  select ee.emp_id, ee.name, ee.mgr
  from emp as ee, ancestors as a
  where ee.mgr = a.emp_id
  for system_time as of timestamp @ts
)
select * from ancestors;
set @tmp= "
with recursive
ancestors
as
(
  select e.emp_id, e.name, e.mgr
  from emp as e
  where name = 'bill'
  for system_time as of timestamp @ts
  union
  select ee.emp_id, ee.name, ee.mgr
  from emp as ee, ancestors as a
  where ee.mgr = a.emp_id
  for system_time as of timestamp @ts
)
select * from ancestors";
prepare stmt from @tmp; execute stmt; drop prepare stmt;

drop table emp;

create or replace table t1 (x int) with system versioning;
create or replace table t2 (y int) with system versioning;
insert into t1 values (1);
set @t0= now(6);
delete from t1;
insert into t1 values (2);
insert into t2 values (10);

--error ER_VERS_DERIVED_PROHIBITED
select * from (select *, t1.sys_trx_end, t1.sys_trx_end as endo from t1) as s0;
--error ER_VERS_DERIVED_PROHIBITED
select * from (select *, t1.sys_trx_end, t2.sys_trx_start from t1, t2) as s0;

--echo # SYSTEM_TIME propagation from inner to outer
select * from (select * from t1 for system_time as of timestamp @t0, t2) as s0;
with s1 as (select * from t1 for system_time as of timestamp @t0, t2) select * from s1;
--echo # leading table selection
select * from (select *, t1.sys_trx_end from t2, t1 for system_time as of timestamp @t0) as s2;
with s3 as (select *, t1.sys_trx_end from t2, t1 for system_time as of timestamp @t0) select * from s3;
--echo # SYSTEM_TIME propagation from outer to inner
select * from (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) as s4 for system_time as of timestamp @t0;
with s5 as (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) select * from s5 for system_time as of timestamp @t0;
with s6 as (select *, t1.sys_trx_start from t2 for system_time as of current_timestamp, t1) select * from s6 for system_time as of timestamp @t0;

--echo ### VIEW instead of t1
set @q= concat("create view vt1 as select * from t1 for system_time as of timestamp '", @t0, "'");
prepare q from @q; execute q; drop prepare q;
create view vt2 as select * from t1;

--echo # SYSTEM_TIME propagation from view
select * from vt1;
--echo # SYSTEM_TIME propagation from inner to outer
select * from (select * from vt1, t2) as s0;
--echo # leading table selection
select * from (select *, vt1.sys_trx_end from t2, vt1) as s0;

--echo ### SYSTEM_TIME clash
--error ER_VERS_SYSTEM_TIME_CLASH
select * from (select * from t1 for system_time all) dt0 for system_time all;
--error ER_VERS_SYSTEM_TIME_CLASH
select * from vt1 for system_time all;
--error ER_VERS_SYSTEM_TIME_CLASH
with dt1 as (select * from t1 for system_time all)
select * from dt1 for system_time all;

--echo ### UNION
set @t1= now(6);
delete from t2;
insert into t2 values (3);
--echo # SYSTEM_TIME is not propagated
select x from t1 union
select y from t2;
select x from t1 for system_time as of @t0 union
select y from t2;
select x from t1 union
select y from t2 for system_time as of @t1;
select x from t1 for system_time as of @t0 union
select y from t2 for system_time as of @t1;

drop database test;
create database test;