drop table if exists t1;
create function if not exists non_default_engine()
returns varchar(255)
deterministic
begin
if default_engine() = 'InnoDB' then
return 'MyISAM';
end if;
return 'InnoDB';
end~~
create table t1 (
x1 int unsigned,
Sys_start SYS_DATATYPE generated always as row start comment 'start',
Sys_end SYS_DATATYPE generated always as row end 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 COMMENT 'start',
  `Sys_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END COMMENT 'end',
  PERIOD FOR SYSTEM_TIME (`Sys_start`, `Sys_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
# 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,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
x3 int unsigned,
Sys_start SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end2 SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 SYS_DATATYPE generated always as row start,
Sys_end SYS_DATATYPE generated always as row end,
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 generated always as row start,
Sys_end timestamp(6) generated always as row end,
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) generated always as row start,
Sys_end bigint unsigned generated always as row end,
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 generated always as row start,
Sys_end bigint unsigned generated always as row end,
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 versioned table `t1`
create or replace table t1 (
x14 int unsigned,
Sys_start bigint unsigned generated always as row start,
Sys_end bigint generated always as row end,
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 versioned table `t1`
create or replace table t1 (
A1 int with system versioning,
B int
);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `A1` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
A2 int with system versioning,
B int
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `A2` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
A3 int,
B int without system versioning
);
create or replace table t1 (
A4 int,
B int without system versioning
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `A4` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
A5 int with system versioning,
B int without system versioning
);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `A5` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
A6 int with system versioning,
B int without system versioning
) with system versioning;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `A6` int(11) DEFAULT NULL,
  `B` int(11) DEFAULT NULL WITHOUT SYSTEM VERSIONING,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t1 (
A7 int without system versioning
);
create or replace table t1 (
A8 int without system versioning
) with system versioning;
ERROR HY000: Table `t1` has no versioned columns
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,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 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=latin1
# CREATE TABLE ... SELECT
create or replace table t1 (x int) with system versioning;
create or replace table t0(
y int,
st SYS_DATATYPE generated always as row start,
en SYS_DATATYPE generated always as row end,
period for system_time (st, en)
) with system versioning;
## For non-versioned table:
### 1. implicit system fields are not included
create or replace table t2 as select * from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x` int(11) DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1
### 2. explicit system 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` SYS_DATATYPE,
  `en` SYS_DATATYPE
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1
## For versioned table
insert into t1 values (1);
select sys_trx_start from t1 into @sys_trx_start;
insert into t0 values (2);
select st from t0 into @st;
### 1. implicit system fields are included as implicit
create or replace table t2 with system versioning as select * from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `x` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
#### sys_trx_start, sys_trx_end are copied; wildcard not expanded
select * from t2 where sys_trx_start = @sys_trx_start;
x
1
### 2. explicit system fields are included as non-system
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` SYS_DATATYPE,
  `en` SYS_DATATYPE,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
#### st, en are plain fields now
select * from t3 where y > 2;
y	st	en
select y from t3 where st = @st and sys_trx_start > @st;
y
2
### 3. explicit system fields are kept as system
create or replace table t3 (
st SYS_DATATYPE generated always as row start,
en SYS_DATATYPE generated always as row end,
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` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `en` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`st`, `en`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
select y from t3 where st = @st;
y
2
### 4. system fields not or wrongly selected
create or replace table t3 with system versioning select x from t1;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
select * from t3;
x
1
create or replace table t3 with system versioning select x, sys_trx_start from t1;
ERROR HY000: Wrong parameters for `t3`: missing 'AS ROW END'
create or replace table t3 with system versioning select x, sys_trx_end from t1;
ERROR HY000: Wrong parameters for `t3`: missing 'AS ROW START'
# Prepare checking for historical row
delete from t1;
select sys_trx_end from t1 for system_time all into @sys_trx_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` (
  `x` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  `y` int(11) DEFAULT NULL,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
select * from t3 for system_time all where sys_trx_start = @sys_trx_start and sys_trx_end = @sys_trx_end;
x	y
1	3
create or replace table t2 like t0;
insert into t2 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 (a int) with system versioning engine NON_DEFAULT_ENGINE;
create or replace table t2
as select a, sys_trx_start, sys_trx_end from t1 for system_time all;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL,
  `sys_trx_start` NON_SYS_DATATYPE DEFAULT NULL,
  `sys_trx_end` NON_SYS_DATATYPE DEFAULT NULL
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1
create or replace table t2 with system versioning
as select a, sys_trx_start, sys_trx_end from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) DEFAULT NULL,
  `sys_trx_start` NON_SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` NON_SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=NON_DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
create or replace table t2 with system versioning engine DEFAULT_ENGINE
as select a, sys_trx_start, sys_trx_end from t1 for system_time all;
ERROR HY000: `sys_trx_start` must be of type SYS_DATATYPE for versioned table `t2`
create or replace table t1 (a 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.a, t1.sys_trx_start, t1.sys_trx_end 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,
  `a` int(11) DEFAULT NULL,
  `sys_trx_start` NON_SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `sys_trx_end` NON_SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=NON_DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
## Errors
create or replace table t (sys_trx_start int);
alter table t with system versioning;
ERROR 42S21: Duplicate column name 'sys_trx_start'
create or replace table t (sys_trx_end int);
alter table t with system versioning;
ERROR 42S21: Duplicate column name 'sys_trx_end'
create or replace temporary table t (x int) with system versioning;
ERROR HY000: Incorrect usage of TEMPORARY and WITH SYSTEM VERSIONING
create or replace table t1 (
x11 int unsigned,
Sys_start0 timestamp(6) generated always as row start,
Sys_start timestamp(6) generated always as row start,
Sys_end timestamp(6) generated always as row end,
period for system_time (Sys_start, Sys_end)
) with system versioning;
ERROR HY000: Duplicate ROW START column `Sys_start`
## System fields detection
create or replace table t1 (x int) with system versioning;
create or replace table t2 (
y int,
st SYS_DATATYPE generated always as row start,
en SYS_DATATYPE generated always as row end,
period for system_time (st, en)
) with system versioning;
create or replace table t3
as select x, y, sys_trx_start, sys_trx_end, st, en from t1, t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x` int(11) DEFAULT NULL,
  `y` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE,
  `sys_trx_end` SYS_DATATYPE,
  `st` SYS_DATATYPE,
  `en` SYS_DATATYPE
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1
create or replace table t3 (
y int,
st SYS_DATATYPE generated always as row start,
en SYS_DATATYPE generated always as row end,
period for system_time (st, en)
) with system versioning
as select x, y, sys_trx_start, sys_trx_end, st, en from t1, t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `x` int(11) DEFAULT NULL,
  `y` int(11) DEFAULT NULL,
  `sys_trx_start` SYS_DATATYPE,
  `sys_trx_end` SYS_DATATYPE,
  `st` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
  `en` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`st`, `en`)
) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
drop database test;
create database test;