set timestamp=unix_timestamp('2001-02-03 10:20:30');
create or replace table t1 (i int) with system versioning
partition by system_time interval 1 day
subpartition by key (i) subpartitions 2
(partition p1 history, partition pn current);
set timestamp=unix_timestamp('2001-02-03 10:20:40');
insert t1 values (1);
delete from t1;
set timestamp=unix_timestamp('2001-02-04 10:20:50');
insert t1 values (2);
delete from t1;
select subpartition_name,partition_description,table_rows from information_schema.partitions where table_schema='test' and table_name='t1';
subpartition_name	partition_description	table_rows
p1sp0	2001-02-04 10:20:30	1
p1sp1	2001-02-04 10:20:30	1
pnsp0	CURRENT	0
pnsp1	CURRENT	0
set timestamp=unix_timestamp('2001-02-04 10:20:55');
alter table t1 add partition (partition p0 history, partition p2 history);
set timestamp=unix_timestamp('2001-02-04 10:30:00');
insert t1 values (4),(5);
set timestamp=unix_timestamp('2001-02-04 10:30:10');
update t1 set i=6 where i=5;
select subpartition_name,partition_description,table_rows from information_schema.partitions where table_schema='test' and table_name='t1';
subpartition_name	partition_description	table_rows
p1sp0	2001-02-04 10:20:30	1
p1sp1	2001-02-04 10:20:30	0
p0sp0	2001-02-05 10:20:30	1
p0sp1	2001-02-05 10:20:30	1
p2sp0	2001-02-06 10:20:30	0
p2sp1	2001-02-06 10:20:30	0
pnsp0	CURRENT	0
pnsp1	CURRENT	2
## pruning check
set @ts=(select partition_description from information_schema.partitions
where table_schema='test' and table_name='t1' and partition_name='p0' limit 1);
select * from t1;
i
4
6
explain partitions select * from t1;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	pn_pnsp0,pn_pnsp1	ALL	NULL	NULL	NULL	NULL	2	Using where
explain partitions select * from t1 for system_time as of '2001-02-04 10:20:30';
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0_p0sp0,p0_p0sp1,p2_p2sp0,p2_p2sp1,pn_pnsp0,pn_pnsp1	ALL	NULL	NULL	NULL	NULL	#	Using where
set @ts=(select row_end from t1 for system_time all where i=1);
select * from t1 for system_time all where row_end = @ts;
i
1
explain partitions select * from t1 for system_time all where row_end = @ts;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p1_p1sp0,p1_p1sp1	#	NULL	NULL	NULL	NULL	#	#
#
# MDEV-16023 Unfortunate error message WARN_VERS_PART_FULL
#
set timestamp= unix_timestamp('2020-07-29 10:30:10');
create or replace table t1 (a int) with system versioning
partition by system_time interval 1 second (
partition p0 history,
partition p1 history,
partition pc current
);
set timestamp= unix_timestamp('2020-07-29 10:30:14');
insert into t1 values (1),(2),(3);
show warnings;
Level	Code	Message
# Cleanup
set timestamp= default;
drop table t1;