select * from information_schema.periods;
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	PERIOD	START_COLUMN_NAME	END_COLUMN_NAME
create table t1 (
x1 int unsigned,
Sys_start SYS_DATATYPE as row start invisible comment 'start',
Sys_end SYS_DATATYPE as row end invisible comment 'end',
period for system_time (Sys_start, Sys_end)
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x1` int(10) unsigned DEFAULT NULL,
  `Sys_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START INVISIBLE COMMENT 'start',
  `Sys_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END INVISIBLE COMMENT 'end',
  PERIOD FOR SYSTEM_TIME (`Sys_start`, `Sys_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select * from information_schema.periods where table_name = 't1';
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	PERIOD	START_COLUMN_NAME	END_COLUMN_NAME
def	test	t1	SYSTEM_TIME	Sys_start	Sys_end
select column_name, is_system_time_period_start, is_system_time_period_end
from information_schema.columns where table_name = 't1';
column_name	is_system_time_period_start	is_system_time_period_end
x1	NO	NO
Sys_start	YES	NO
Sys_end	NO	YES
select table_catalog,table_schema,table_name,table_type,version,table_rows,data_free,auto_increment,check_time,table_collation,checksum,create_options,table_comment from information_schema.tables where table_name='t1';
table_catalog	def
table_schema	test
table_name	t1
table_type	SYSTEM VERSIONED
version	10
table_rows	0
data_free	0
auto_increment	NULL
check_time	NULL
table_collation	utf8mb4_uca1400_ai_ci
checksum	NULL
create_options	
table_comment	
select table_catalog,table_schema,table_name,column_name,ordinal_position,column_default,character_maximum_length,character_octet_length,character_set_name,collation_name,column_key,extra,column_comment,is_generated,generation_expression from information_schema.columns where table_name='t1';
table_catalog	def
table_schema	test
table_name	t1
column_name	x1
ordinal_position	1
column_default	NULL
character_maximum_length	NULL
character_octet_length	NULL
character_set_name	NULL
collation_name	NULL
column_key	
extra	
column_comment	
is_generated	NEVER
generation_expression	NULL
table_catalog	def
table_schema	test
table_name	t1
column_name	Sys_start
ordinal_position	2
column_default	NULL
character_maximum_length	NULL
character_octet_length	NULL
character_set_name	NULL
collation_name	NULL
column_key	
extra	STORED GENERATED, INVISIBLE
column_comment	start
is_generated	ALWAYS
generation_expression	ROW START
table_catalog	def
table_schema	test
table_name	t1
column_name	Sys_end
ordinal_position	3
column_default	NULL
character_maximum_length	NULL
character_octet_length	NULL
character_set_name	NULL
collation_name	NULL
column_key	
extra	STORED GENERATED, INVISIBLE
column_comment	end
is_generated	ALWAYS
generation_expression	ROW END
# Implicit fields test
create or replace table t1 (
x2 int unsigned
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x2` int(10) unsigned DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select * from information_schema.periods where table_name = 't1';
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	PERIOD	START_COLUMN_NAME	END_COLUMN_NAME
select column_name, is_system_time_period_start, is_system_time_period_end
from information_schema.columns where table_name = 't1';
column_name	is_system_time_period_start	is_system_time_period_end
x2	NO	NO
create or replace table t1 (
x3 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (x, Sys_end)
) with system versioning;
ERROR HY000: PERIOD FOR SYSTEM_TIME must use columns `Sys_start` and `Sys_end`
create or replace table t1 (
x4 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end2 timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning;
ERROR HY000: PERIOD FOR SYSTEM_TIME must use columns `Sys_start` and `Sys_end2`
create or replace table t1 (
x5 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, x)
) with system versioning;
ERROR HY000: PERIOD FOR SYSTEM_TIME must use columns `Sys_start` and `Sys_end`
create or replace table t1 (
x6 int unsigned,
period for system_time (Sys_start, Sys_end)
) with system versioning;
ERROR HY000: Wrong parameters for `t1`: missing 'AS ROW START'
create or replace table t1 (
x7 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
);
ERROR HY000: Wrong parameters for `t1`: missing 'WITH SYSTEM VERSIONING'
create or replace table t1 (
x8 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (sys_insert, sys_remove)
) with system versioning;
ERROR HY000: PERIOD FOR SYSTEM_TIME must use columns `Sys_start` and `Sys_end`
create or replace table t1 (
x9 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
);
ERROR HY000: Wrong parameters for `t1`: missing 'WITH SYSTEM VERSIONING'
create or replace table t1 (
x10 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_start)
);
ERROR HY000: Wrong parameters for `t1`: missing 'WITH SYSTEM VERSIONING'
create or replace table t1 (
x11 int unsigned,
Sys_start bigint unsigned as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning;
Got one of the listed errors
create or replace table t1 (
x12 int unsigned,
Sys_start timestamp(6) as row start invisible,
Sys_end bigint unsigned as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning;
Got one of the listed errors
create or replace table t1 (
x13 int unsigned,
Sys_start bigint as row start invisible,
Sys_end bigint unsigned as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning engine innodb;
ERROR HY000: `Sys_start` must be of type BIGINT(20) UNSIGNED for system-versioned table `t1`
create or replace table t1 (
x14 int unsigned,
Sys_start bigint unsigned as row start invisible,
Sys_end bigint as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning engine innodb;
ERROR HY000: `Sys_end` must be of type BIGINT(20) UNSIGNED for system-versioned table `t1`
create or replace table t1 (
x15 int with system versioning,
B int
);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x15` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x16 int with system versioning,
B int
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x16` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x17 int,
B int without system versioning
);
create or replace table t1 (
x18 int,
B int without system versioning
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x18` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x19 int with system versioning,
B int without system versioning
);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x19` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x20 int with system versioning,
B int without system versioning
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x20` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x21 int without system versioning
);
create or replace table t1 (
x22 int without system versioning
) with system versioning;
ERROR HY000: Table `t1` must have at least one versioned column
create or replace table t1 (a int) with system versioning;
create table tt1 like t1;
show create table tt1;
Table	Create Table
tt1	CREATE TABLE `tt1` (
  `a` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
drop table tt1;
create temporary table tt1 like t1;
Warnings:
Warning	1105	System versioning is stripped from temporary `test.tt1`
# Temporary is stripped from versioning
show create table tt1;
Table	Create Table
tt1	CREATE TEMPORARY TABLE `tt1` (
  `a` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
# CREATE TABLE ... SELECT
create or replace table t1 (x23 int) with system versioning;
create or replace table t0(
y int,
st timestamp(6) as row start,
en timestamp(6) as row end,
period for system_time (st, en)
) with system versioning;
## For non-versioned table:
### 1. invisible fields are not included
create or replace table t2 as select * from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x23` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
### 2. all visible fields are included
create or replace table t3 as select * from t0;
select * from t0;
y	st	en
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `y` int(11) DEFAULT NULL,
  `st` timestamp(6) NOT NULL,
  `en` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
## For versioned table
insert into t1 values (1);
select row_start from t1 into @row_start;
insert into t0 (y) values (2);
select st from t0 into @st;
create or replace table t2 with system versioning as select * from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x23` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
#### invisible fields are not copied
select * from t2;
x23
1
select * from t2 where row_start <= @row_start;
x23
### 2. source table with visible system fields, target with invisible
create or replace table t3 with system versioning as select * from t0;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `y` int(11) DEFAULT NULL,
  `st` timestamp(6) NOT NULL,
  `en` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select * from t3 where y > 2;
y	st	en
select y from t3 where st = @st and row_start > @st;
y
2
### 3. source and target table with visible system fields
create or replace table t3 (
st timestamp(6) as row start invisible,
en timestamp(6) as row end invisible,
period for system_time (st, en)
) with system versioning as select * from t0;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `y` int(11) DEFAULT NULL,
  `st` timestamp(6) GENERATED ALWAYS AS ROW START INVISIBLE,
  `en` timestamp(6) GENERATED ALWAYS AS ROW END INVISIBLE,
  PERIOD FOR SYSTEM_TIME (`st`, `en`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select y from t3;
y
2
select y from t3 where st = @st;
y
### 4. system fields not or wrongly selected
create or replace table t3 with system versioning select x23 from t1;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x23` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select * from t3;
x23
1
create or replace table t3 with system versioning select x23, row_start from t1;
ERROR 42S21: Duplicate column name 'row_start'
create or replace table t3 with system versioning select x23, row_end from t1;
ERROR 42S21: Duplicate column name 'row_end'
# Prepare checking for historical row
delete from t1;
select row_end from t1 for system_time all into @row_end;
delete from t0;
select en from t0 for system_time all into @en;
## Combinations of versioned + non-versioned
create or replace table t2 (y int);
insert into t2 values (3);
create or replace table t3 with system versioning select * from t1 for system_time all, t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x23` int(11) DEFAULT NULL,
  `y` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
select * from t3 for system_time all;
x23	y
1	3
select * from t3 for system_time all where row_start = @row_start and row_end = @row_end;
x23	y
create or replace table t2 like t0;
insert into t2 (y) values (1), (2);
delete from t2 where y = 2;
create or replace table t3 select * from t2 for system_time all;
select st, en from t3 where y = 1 into @st, @en;
select y from t2 for system_time all where st = @st and en = @en;
y
1
select st, en from t3 where y = 2 into @st, @en;
select y from t2 for system_time all where st = @st and en = @en;
y
2
## Default engine detection
create or replace table t1 (x25 int) with system versioning engine NON_DEFAULT_ENGINE;
create or replace table t2
as select x25, row_start, row_end from t1 for system_time all;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x25` int(11) DEFAULT NULL,
  `row_start` timestamp(6) NOT NULL,
  `row_end` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
create or replace table t2 with system versioning
as select x25, row_start rs, row_end re from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x25` int(11) DEFAULT NULL,
  `rs` timestamp(6) NOT NULL,
  `re` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x26 int,
st bigint unsigned as row start,
en bigint unsigned as row end,
period for system_time (st, en)
) with system versioning engine innodb;
create or replace table t2 with system versioning engine myisam
as select * from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x26` int(11) DEFAULT NULL,
  `st` bigint(20) unsigned NOT NULL,
  `en` bigint(20) unsigned NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (x27 int, id int) with system versioning engine NON_DEFAULT_ENGINE;
create or replace table t2 (b int, id int);
create or replace table t3 with system versioning
as select t2.b, t1.x27, t1.row_start rs, t1.row_end re from t2 inner join t1 on t2.id=t1.id;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `b` int(11) DEFAULT NULL,
  `x27` int(11) DEFAULT NULL,
  `rs` timestamp(6) NOT NULL,
  `re` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
## Errors
create or replace temporary table t (x28 int) with system versioning;
ERROR HY000: System-versioned tables do not support CREATE TEMPORARY TABLE
create or replace table t1 (
x29 int unsigned,
Sys_start0 timestamp(6) as row start invisible,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning;
ERROR HY000: Duplicate ROW START column `Sys_start`
create or replace table t1 (
x29 int unsigned,
Sys_end0 timestamp(6) as row end invisible,
Sys_start timestamp(6) as row start invisible,
Sys_end timestamp(6) as row end invisible,
period for system_time (Sys_start, Sys_end)
) with system versioning;
ERROR HY000: Duplicate ROW END column `Sys_end`
## System fields detection
create or replace table t1 (x30 int) with system versioning;
create or replace table t2 (
y int,
st timestamp(6) as row start invisible,
en timestamp(6) as row end invisible,
period for system_time (st, en)
) with system versioning;
create or replace table t3
as select x30, y, row_start, row_end, st, en from t1, t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x30` int(11) DEFAULT NULL,
  `y` int(11) DEFAULT NULL,
  `row_start` timestamp(6) NOT NULL,
  `row_end` timestamp(6) NOT NULL,
  `st` timestamp(6) NOT NULL,
  `en` timestamp(6) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
create or replace table t3 (
y int,
st timestamp(6) as row start invisible,
en timestamp(6) as row end invisible,
period for system_time (st, en)
) with system versioning
as select x30, y, row_start, row_end, st, en from t1, t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x30` int(11) DEFAULT NULL,
  `y` int(11) DEFAULT NULL,
  `row_start` timestamp(6) NOT NULL,
  `row_end` timestamp(6) NOT NULL,
  `st` timestamp(6) GENERATED ALWAYS AS ROW START INVISIBLE,
  `en` timestamp(6) GENERATED ALWAYS AS ROW END INVISIBLE,
  PERIOD FOR SYSTEM_TIME (`st`, `en`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
# MDEV-14828 Server crashes in JOIN::prepare / setup_fields on 2nd execution of PS [#437]
create or replace table t1 (x int) with system versioning;
prepare bad from 'create or replace table t2 with system versioning as select * from t1';
execute bad;
execute bad;
execute bad;
execute bad;
execute bad;
execute bad;
execute bad;
execute bad;
# bad is good.
# MDEV-15413 Unexpected errors upon CREATE TABLE .. WITH SYSTEM VERSIONING AS SELECT ...
create or replace table t1 with system versioning as select 1 as i;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `i` int(1) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (i int) with system versioning as select 1 as i;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `i` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
a int,
row_start bigint as row start,
row_end bigint as row end,
period for system_time (row_start, row_end)
) engine=innodb with system versioning;
ERROR HY000: `row_start` must be of type BIGINT(20) UNSIGNED for system-versioned table `t1`
create or replace table t1 (
a int,
row_start bigint as row start,
row_end bigint as row end,
period for system_time (row_start, row_end)
) engine=myisam with system versioning;
ERROR HY000: `row_start` must be of type BIGINT(20) UNSIGNED for system-versioned table `t1`
create table t (
a int,
row_start datetime(6) generated always as row start,
row_end datetime(6) generated always as row end,
period for system_time(row_start, row_end)
) with system versioning;
ERROR HY000: `row_start` must be of type TIMESTAMP(6) for system-versioned table `t`
# MDEV-16490 It's possible to make a system versioned table without any versioning field
create or replace table t1 (x int without system versioning)
with system versioning
select 1 as y;
create or replace table t1 (x int without system versioning)
with system versioning
select 1 as x;
ERROR HY000: Table `t1` must have at least one versioned column
drop tables t0, t1, t2, t3;
#
# MDEV-23968 CREATE TEMPORARY TABLE .. LIKE (system versioned table) returns error if unique index is defined in the table
#
create table t1 (id int primary key, index(row_start)) with system versioning;
ERROR 42000: Key column 'row_start' doesn't exist in table
create table t1 (id int primary key, index(row_end)) with system versioning;
ERROR 42000: Key column 'row_end' doesn't exist in table
create table t1 (id int, primary key(id, row_end, row_end)) with system versioning;
ERROR 42000: Key column 'row_end' doesn't exist in table
create table t1 (id int primary key) with system versioning;
create temporary table t2 like t1;
Warnings:
Warning	1105	System versioning is stripped from temporary `test.t2`
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
show create table t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `id` int(11) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
drop temporary table t2;
create or replace table t1 (
a int,
row_start timestamp(6) as row start,
row_end timestamp(6) as row end,
period for system_time (row_start, row_end),
index(row_start),
index(row_end),
primary key(row_end, a, row_start),
index(row_end, row_start, a)) with system versioning;
create temporary table t2 like t1;
Warnings:
Warning	1105	System versioning is stripped from temporary `test.t2`
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  `row_start` timestamp(6) GENERATED ALWAYS AS ROW START,
  `row_end` timestamp(6) GENERATED ALWAYS AS ROW END,
  PRIMARY KEY (`row_end`,`a`,`row_start`),
  KEY `row_start` (`row_start`),
  KEY `row_end` (`row_end`),
  KEY `row_end_2` (`row_end`,`row_start`,`a`),
  PERIOD FOR SYSTEM_TIME (`row_start`, `row_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
show create table t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `a` int(11) NOT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
drop temporary table t2;
drop table t1;
#
# MDEV-16857 system-invisible row_end is displayed in SHOW INDEX
#
create or replace table t1 (id int primary key, x int) with system versioning;
select table_schema, table_name, non_unique, index_schema, index_name, seq_in_index, column_name
from information_schema.statistics where table_name = 't1';
table_schema	table_name	non_unique	index_schema	index_name	seq_in_index	column_name
test	t1	0	test	PRIMARY	1	id
show index from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t1	0	PRIMARY	1	id	#	#	#	#	#	#			NO
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `x` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
drop table t1;
#
# MDEV-26928 Column-inclusive WITH SYSTEM VERSIONING doesn't work with explicit system fields
#
create or replace table t1 (x int, y int with system versioning);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `y` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
create or replace table t1 (
x int, y int with system versioning,
row_start timestamp(6) as row start,
row_end timestamp(6) as row end,
period for system_time(row_start, row_end));
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `y` int(11) DEFAULT NULL,
  `row_start` timestamp(6) GENERATED ALWAYS AS ROW START,
  `row_end` timestamp(6) GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`row_start`, `row_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci WITH SYSTEM VERSIONING
drop table t1;
#
# MDEV-27452 TIMESTAMP(0) system field is allowed for certain creation of system-versioned table
#
create or replace table t (
a int,
s timestamp as row start,
e timestamp as row end,
period for system_time (s, e))
with system versioning;
ERROR HY000: `s` must be of type TIMESTAMP(6) for system-versioned table `t`
create or replace table t (
a int with system versioning,
s timestamp as row start,
e timestamp as row end,
period for system_time (s, e));
ERROR HY000: `s` must be of type TIMESTAMP(6) for system-versioned table `t`
create or replace table t (
a int with system versioning,
b int with system versioning,
s timestamp(6) as row start,
e timestamp(6) as row end,
period for system_time (s, e));
insert into t () values (),();
drop table t;