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 procedure test_01(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('
  create table t1(
    x int unsigned,
    y int unsigned,
    sys_start ', sys_type, ' generated always as row start,
    sys_end ', sys_type, ' generated always as row end,
    period for system_time (sys_start, sys_end))
  with system versioning
  engine ', engine);
prepare stmt from @str; execute stmt; drop prepare stmt;
insert into t1(x, y) values
(1, 1000),
(2, 2000),
(3, 3000),
(4, 4000),
(5, 5000),
(6, 6000),
(7, 7000),
(8, 8000),
(9, 9000);
select x, y from t1;
update t1 set y = y + 1 where x > 7;
select x, y from t1;
select x, y from t1 for system_time
between timestamp '0000-0-0 0:0:0'
  and timestamp '2038-01-19 04:14:07';
drop table t1;
end~~
create procedure test_02(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('
  create table t1 (
    id bigint primary key,
    x int,
    y int without system versioning)
  with system versioning
  engine ', engine);
prepare stmt from @str; execute stmt; drop prepare stmt;  
insert into t1 values(1, 1, 1);
set @ins_t= now(6);
select sys_trx_start into @tmp1 from t1;
update t1 set x= 11, y= 11 where id = 1;
select @tmp1 < sys_trx_start as A1, x, y from t1;
select sys_trx_start into @tmp1 from t1;
update t1 set y= 1 where id = 1;
select @tmp1 = sys_trx_start as A2, x from t1;
drop table t1;
end~~
create procedure test_03(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('
  create table t1 (
    x int,
    y int)
  with system versioning
  engine ', engine);
prepare stmt from @str; execute stmt; drop prepare stmt;
insert into t1 (x, y) values (1, 1), (2, 1), (3, 1);
start transaction;  
update t1 set y= y + 1 where x = 3;
update t1 set y= y + 1 where x = 3;
commit;
select x, y from t1 for system_time
between timestamp '0000-0-0 0:0:0'
  and timestamp '2038-01-19 04:14:07';
drop table t1;
end~~
create procedure test_04(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('
  create table t1 (
    id int primary key auto_increment,
    x int)
  with system versioning
  engine ', engine);
prepare stmt from @str; execute stmt; drop prepare stmt;
set @t0= now(6);
insert into t1 (x) values (1);
set @t1= now(6);
update t1 set x= 2 where id = 1;
set @t2= now(6);
update t1 set x= 3 where id = 1;
select x from t1 for system_time as of timestamp @t0;
select x from t1 for system_time as of timestamp @t1;
select x from t1 for system_time as of timestamp @t2;
select x from t1 for system_time as of timestamp now(6);
drop table t1;
end~~
create procedure test_05(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('
  create table t1(
    x int unsigned,
    sys_end ', sys_type, ' generated always as row end,
    sys_start ', sys_type, ' generated always as row start,
    y int unsigned,
    period for system_time (sys_start, sys_end),
    primary key(x, y))
  with system versioning
  engine ', engine);
prepare stmt from @str; execute stmt; drop prepare stmt;
insert into t1(x, y) values
(1, 1000),
(2, 2000),
(3, 3000),
(4, 4000),
(5, 5000),
(6, 6000),
(7, 7000),
(8, 8000),
(9, 9000);
insert into t1(x, y) values(3, 3000) on duplicate key update y = y+1;
insert into t1(x, y) values(4, 4000) on duplicate key update y = y+1;
insert into t1(x, y) values(4, 4001) on duplicate key update y = y+1;
insert into t1(x, y) values(4, 4444) on duplicate key update y = y+1;
select x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp '9999-1-1 0:0:0';
select x, y from t1;
drop table t1;
end~~
create procedure test_06(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('(
    x int unsigned,
    y int unsigned,
    sys_start ', sys_type, ' generated always as row start,
    sys_end ', sys_type, ' generated always as row end,
    period for system_time (sys_start, sys_end))
  with system versioning
  engine ', engine);
set @str2= concat('create table t1', @str);
prepare stmt from @str2; execute stmt; drop prepare stmt;
set @str2= concat('create table t2', @str);
prepare stmt from @str2; execute stmt; drop prepare stmt;
insert into t1(x, y) values
(1, 1000),
(2, 2000),
(3, 3000),
(4, 4000),
(5, 5000),
(6, 6000),
(7, 7000),
(8, 8000),
(9, 9000);
insert into t2(x, y) values
(1, 1010),
(2, 2010),
(3, 3010),
(4, 4010),
(5, 5010),
(6, 6010),
(7, 7010),
(8, 8010),
(9, 9010);
update t1, t2 set t1.y = t1.x + t1.y, t2.y = t2.x + t2.y where t1.x > 7 and t2.x < 7;
select x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp '9999-1-1 0:0:0';
select x, y from t1;
select x, y from t2 for system_time between timestamp '0-0-0 0:0:0' and timestamp '9999-1-1 0:0:0';
select x, y from t2;
drop table t1;
drop table t2;
end~~
create procedure test_07(
sys_type varchar(255),
engine varchar(255),
fields varchar(255))
begin
set @str= concat('(
    id bigint primary key,
    name varchar(128) with system versioning,
    salary bigint)
  engine ', engine);
set @str2= concat('create table t1', @str);
prepare stmt from @str2; execute stmt; drop prepare stmt;
set @str2= concat('create table t2', @str);
prepare stmt from @str2; execute stmt; drop prepare stmt;
insert into t1 values (1, "Jeremy", 3000);
insert into t2 values (1, "Jeremy", 4000);
select sys_trx_start into @tmp1 from t1;
select sys_trx_start into @tmp2 from t2;
update t1, t2 set t1.name= "Jerry", t2.name= "Jerry" where t1.id = t2.id and t1.name = "Jeremy";
select @tmp1 < sys_trx_start as A1, name from t1;
select @tmp2 < sys_trx_start as A2, name from t2;
select sys_trx_start into @tmp1 from t1;
select sys_trx_start into @tmp2 from t2;
update t1, t2 set t1.salary= 2500, t2.salary= 2500 where t1.id = t2.id and t1.name = "Jerry";
select @tmp1 = sys_trx_start as B1, salary from t1;
select @tmp2 = sys_trx_start as B2, salary from t2;
drop table t1;
drop table t2;
end~~
call test_01('timestamp(6)', 'myisam', 'sys_end');
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8000
9	9000
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8001
9	9001
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8001
9	9001
8	8000
9	9000
call test_01('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8000
9	9000
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8001
9	9001
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8001
9	9001
8	8000
9	9000
call test_02('timestamp(6)', 'myisam', 'sys_end');
A1	x	y
1	11	11
A2	x
1	11
call test_02('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
A1	x	y
1	11	11
A2	x
1	11
call test_03('timestamp(6)', 'myisam', 'sys_end');
x	y
1	1
2	1
3	3
3	1
3	2
call test_03('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
x	y
1	1
2	1
3	3
3	1
call test_04('timestamp(6)', 'myisam', 'sys_end');
x
x
1
x
2
x
3
call test_04('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
x
x
1
x
2
x
3
call test_05('timestamp(6)', 'myisam', 'sys_end');
x	y
1	1000
2	2000
3	3001
4	4002
5	5000
6	6000
7	7000
8	8000
9	9000
3	3000
4	4000
4	4001
4	4444
x	y
1	1000
2	2000
3	3001
4	4002
4	4444
5	5000
6	6000
7	7000
8	8000
9	9000
call test_05('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
x	y
1	1000
2	2000
3	3000
3	3001
4	4000
4	4001
4	4002
4	4444
5	5000
6	6000
7	7000
8	8000
9	9000
x	y
1	1000
2	2000
3	3001
4	4002
4	4444
5	5000
6	6000
7	7000
8	8000
9	9000
call test_06('timestamp(6)', 'myisam', 'sys_end');
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8008
9	9009
8	8000
9	9000
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8008
9	9009
x	y
1	1011
2	2012
3	3013
4	4014
5	5015
6	6016
7	7010
8	8010
9	9010
1	1010
2	2010
3	3010
4	4010
5	5010
6	6010
x	y
1	1011
2	2012
3	3013
4	4014
5	5015
6	6016
7	7010
8	8010
9	9010
call test_06('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8008
9	9009
8	8000
9	9000
x	y
1	1000
2	2000
3	3000
4	4000
5	5000
6	6000
7	7000
8	8008
9	9009
x	y
1	1011
2	2012
3	3013
4	4014
5	5015
6	6016
7	7010
8	8010
9	9010
1	1010
2	2010
3	3010
4	4010
5	5010
6	6010
x	y
1	1011
2	2012
3	3013
4	4014
5	5015
6	6016
7	7010
8	8010
9	9010
call test_07('timestamp(6)', 'myisam', 'sys_end');
A1	name
1	Jerry
A2	name
1	Jerry
B1	salary
1	2500
B2	salary
1	2500
call test_07('bigint unsigned', 'innodb', 'vtq_commit_ts(sys_end)');
A1	name
1	Jerry
A2	name
1	Jerry
B1	salary
1	2500
B2	salary
1	2500
call verify_vtq;
No	A	B	C	D
1	1	1	1	1
2	1	1	1	1
3	1	1	1	1
4	1	1	1	1
5	1	1	1	1
6	1	1	1	1
7	1	1	1	1
8	1	1	1	1
9	1	1	1	1
10	1	1	1	1
11	1	1	1	1
12	1	1	1	1
13	1	1	1	1
14	1	1	1	1
15	1	1	1	1
16	1	1	1	1
17	1	1	1	1
18	1	1	1	1
19	1	1	1	1
20	1	1	1	1
drop procedure test_01;
drop procedure test_02;
drop procedure test_03;
drop procedure test_04;
drop procedure test_05;
drop procedure test_06;
drop procedure test_07;
drop procedure verify_vtq;
drop procedure innodb_verify_vtq;
drop function default_engine;
drop function sys_commit_ts;
drop function sys_datatype;