create table t (a int) with system versioning;
insert into t values (1);
update t set a=2;
select * from t;
a
2
show variables where Variable_name like "temporal_current_timestamp%";
Variable_name	Value
temporal_current_timestamp	now
set global temporal_current_timestamp = '2031-1-1 0:0:0';
select * from t;
a
2
set global temporal_current_timestamp = '2011-1-1 0:0:0';
select * from t;
a
set global temporal_current_timestamp = 'all';
select * from t;
a
2
1
show variables where Variable_name like "temporal_current_timestamp%";
Variable_name	Value
temporal_current_timestamp	all
create view vt as select * from t;
select * from t;
a
2
1
drop view vt;
select * from (select * from t) as tt;
a
2
1
set session temporal_current_timestamp = 'now';
ERROR HY000: Variable 'temporal_current_timestamp' is a GLOBAL variable and should be set with SET GLOBAL
drop table t;
set global temporal_current_timestamp = 'now';