set @@session.time_zone='+00:00';
select ifnull(max(trx_id), 0) into @start_trx_id from information_schema.innodb_vtq;
create procedure if not exists verify_vtq()
begin
set @i= 0;
select
@i:= @i + 1 as No,
trx_id > 0 as A,
commit_id > trx_id as B,
begin_ts > '1-1-1 0:0:0' as C,
commit_ts >= begin_ts as D
from information_schema.innodb_vtq
where trx_id > @start_trx_id;
select ifnull(max(trx_id), 0)
into @start_trx_id
from information_schema.innodb_vtq;
end~~
create function if not exists default_engine()
returns varchar(255)
deterministic
begin
declare e varchar(255);
select lower(engine) from information_schema.engines where support='DEFAULT' into e;
return e;
end~~
create function if not exists sys_datatype()
returns varchar(255)
deterministic
begin
if default_engine() = 'innodb' then
return 'bigint unsigned';
elseif default_engine() = 'myisam' then
return 'timestamp(6)';
end if;
return NULL;
end~~
create function if not exists sys_commit_ts(sys_field varchar(255))
returns varchar(255)
deterministic
begin
if default_engine() = 'innodb' then
return concat('vtq_commit_ts(', sys_field, ')');
elseif default_engine() = 'myisam' then
return sys_field;
end if;
return NULL;
end~~
create procedure if not exists innodb_verify_vtq(recs int)
begin
declare i int default 1;
if default_engine() = 'innodb' then
call verify_vtq;
elseif default_engine() = 'myisam' then
create temporary table tmp (No int, A bool, B bool, C bool, D bool);
while i <= recs do
insert into tmp values (i, 1, 1, 1, 1);
set i= i + 1;
end while;
select * from tmp;
drop table tmp;
end if;
end~~
create table t1 (x int)
with system versioning
partition by range columns (x) (
partition p0 values less than (100),
partition p1 values less than (1000));
insert into t1 values (3), (300);
select * from t1;
x
3
300
select * from t1 partition (p0);
x
3
select * from t1 partition (p1);
x
300
delete from t1;
select * from t1;
x
select * from t1 for system_time all;
x
3
300
select * from t1 partition (p0) for system_time all;
x
3
select * from t1 partition (p1) for system_time all;
x
300
create or replace table t1 (x int)
partition by system_time (
partition p0 versioning,
partition pn as of now);
ERROR HY000: System Versioning required: `BY SYSTEM_TIME` partitioning
create or replace table t1 (x int);
alter table t1
partition by system_time (
partition p0 versioning,
partition pn as of now);
ERROR HY000: System Versioning required: `BY SYSTEM_TIME` partitioning
create or replace table t1 (x int)
with system versioning
partition by system_time (
partition p0 as of now);
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: unexpected number of partitions (expected > 1)
create or replace table t1 (x int)
with system versioning
partition by system_time (
partition p0 as of now,
partition p1 as of now);
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: multiple `AS OF NOW` partitions
create or replace table t1 (x int)
with system versioning
partition by system_time (
partition p0 versioning,
partition p1 versioning);
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: no `AS OF NOW` partition defined
create or replace table t1 (x int)
with system versioning
partition by system_time (
partition pn as of now,
partition p0 versioning);
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: AS OF NOW partition is not last
create or replace table t1 (x int)
with system versioning
partition by system_time (
partition p0 versioning,
partition pn as of now);
alter table t1 add partition (
partition p1 as of now);
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: AS OF NOW partition can not be added
alter table t1 add partition (
partition p1 versioning);
Warnings:
Warning	4078	Maybe missing parameters: no rotation condition for multiple `VERSIONING` partitions.
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `x` int(11) DEFAULT NULL,
  `sys_trx_start` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW START,
  `sys_trx_end` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW END,
  PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
) ENGINE=${INNODB_OR_MYISAM} DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
 PARTITION BY SYSTEM_TIME 
(PARTITION p0 VERSIONING ENGINE = ${INNODB_OR_MYISAM},
 PARTITION p1 VERSIONING ENGINE = ${INNODB_OR_MYISAM},
 PARTITION pn AS OF NOW ENGINE = ${INNODB_OR_MYISAM})
alter table t1 drop partition pn;
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: `AS OF NOW` partition can not be dropped
alter table t1 drop partition p1;
alter table t1 drop partition p0;
ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: one `AS OF NOW` and at least one `VERSIONING` partition required
set @now= now(6);
insert into t1 values (1);
set @ts_start= sys_commit_ts('sys_trx_start');
set @ts_end= sys_commit_ts('sys_trx_end');
set @str= concat('select x, ', @ts_start, ' < @now as A, ', @ts_end, ' > @now as B from t1 partition (p0) for system_time all');
prepare select_p0 from @str;
set @str= concat('select x, ', @ts_start, ' > @now as C, ', @ts_end, ' = timestamp\'2038-01-19 03:14:07\' as D from t1 partition (pn) for system_time all');
prepare select_pn from @str;
execute select_p0;
x	A	B
execute select_pn;
x	C	D
1	1	1
set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts0');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
set @now= now(6);
delete from t1;
execute select_p0;
x	A	B
1	1	1
execute select_pn;
x	C	D
set @str= concat('select ', @ts_start, ' from t1 partition (p0) for system_time all into @ts1');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
select @ts0 = @ts1;
@ts0 = @ts1
1
set @now= now(6);
insert into t1 values (2);
execute select_p0;
x	A	B
1	1	0
execute select_pn;
x	C	D
2	1	1
set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts0');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
set @now= now(6);
update t1 set x = x + 1;
execute select_p0;
x	A	B
1	1	0
2	1	1
execute select_pn;
x	C	D
3	1	1
drop prepare select_p0;
drop prepare select_pn;
set @str= concat('select ', @ts_start, ' from t1 partition (p0) for system_time all where x = 2 into @ts1');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
set @str= concat('select ', @ts_end, ' from t1 partition (p0) for system_time all where x = 2 into @ts2');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts3');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
select @ts0 = @ts1;
@ts0 = @ts1
1
select @ts2 = @ts3;
@ts2 = @ts3
1
create or replace table t1 (x int)
with system versioning
partition by system_time limit 1 (
partition p0 versioning,
partition p1 versioning,
partition pn as of now);
insert into t1 values (1), (2);
select * from t1 partition (pn);
x
1
2
delete from t1;
Warnings:
Note	4079	Switching from partition `p0` to `p1`
select * from t1 partition (p0) for system_time all;
x
1
select * from t1 partition (p1) for system_time all;
x
2
insert into t1 values (3);
delete from t1;
Warnings:
Warning	4077	Using full partition `p1`, need more VERSIONING partitions!
select * from t1 partition (p1) for system_time all;
x
2
3
create or replace table t1 (x int)
with system versioning
partition by system_time interval 1 second (
partition p0 versioning,
partition p1 versioning,
partition pn as of now);
insert into t1 values (1), (2), (3);
select * from t1 partition (pn);
x
1
2
3
delete from t1;
select * from t1 partition (p0) for system_time all;
x
1
2
3
insert into t1 values (4);
delete from t1;
Warnings:
Note	4079	Switching from partition `p0` to `p1`
select * from t1 partition (p1) for system_time all;
x
4
create or replace table t1 (x int)
with system versioning
partition by system_time limit 1
subpartition by key (x)
subpartitions 2 (
partition p0 versioning,
partition p1 versioning,
partition pn as of now);
insert into t1 (x) values (1), (2), (3);
select * from t1 partition (pnsp0);
x
1
3
select * from t1 partition (pnsp1);
x
2
delete from t1;
Warnings:
Note	4079	Switching from partition `p0` to `p1`
Warning	4077	Using full partition `p1`, need more VERSIONING partitions!
select * from t1 partition (p0sp0) for system_time all;
x
1
select * from t1 partition (p0sp1) for system_time all;
x
select * from t1 partition (p1sp0) for system_time all;
x
3
select * from t1 partition (p1sp1) for system_time all;
x
2
drop table t1;
drop procedure verify_vtq;
drop procedure innodb_verify_vtq;
drop function default_engine;
drop function sys_commit_ts;
drop function sys_datatype;