set @@session.time_zone='+00:00';
select ifnull(max(transaction_id), 0) into @start_trx_id from mysql.transaction_registry;
set @test_start=now(6);
create procedure if not exists verify_vtq()
begin
set @i= 0;
select
@i:= @i + 1 as No,
transaction_id > 0 as A,
commit_id > transaction_id as B,
begin_timestamp > @test_start as C,
commit_timestamp >= begin_timestamp as D
from mysql.transaction_registry
where transaction_id > @start_trx_id;
select ifnull(max(transaction_id), 0)
into @start_trx_id
from mysql.transaction_registry;
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 concat_exec2(a varchar(255), b varchar(255))
begin
prepare stmt from concat(a, b);
execute stmt;
deallocate prepare stmt;
end~~
create procedure concat_exec3(a varchar(255), b varchar(255), c varchar(255))
begin
prepare stmt from concat(a, b, c);
execute stmt;
deallocate prepare stmt;
end~~
create or replace table t1 (x int) with system versioning;
insert into t1 values (1);
select now(6) into @t1;
update t1 set x= 2;
select now(6) into @t2;
delete from t1;
set @vt1= concat("create or replace view vt1 as select * from t1 for system_time as of timestamp '", @t1, "'");
prepare stmt from @vt1;
execute stmt;
drop prepare stmt;
set @vt2= concat("create or replace view vt2 as select *, sys_trx_end from t1 for system_time as of timestamp '", @t2, "'");
prepare stmt from @vt2;
execute stmt;
drop prepare stmt;
select * from vt1 for system_time all;
x
1
select * from vt2 for system_time all;
x
2
select * from t1;
x
create or replace view vt1 as select * from t1;
show create view vt1;
View	Create View	character_set_client	collation_connection
vt1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `vt1` AS select `t1`.`x` AS `x`,`t1`.`sys_trx_start` AS `sys_trx_start`,`t1`.`sys_trx_end` AS `sys_trx_end` from `t1` FOR SYSTEM_TIME ALL where `t1`.`sys_trx_end` = MAX_RESULT	latin1	latin1_swedish_ci
drop view vt1;
drop view vt2;
create view vt1 as select * from t1 for system_time all;
select * from vt1 for system_time all;
x
2
1
prepare stmt from 'select * from vt1 for system_time all';
execute stmt;
x
2
1
drop prepare stmt;
select * from vt1;
x
2
1
prepare stmt from 'select * from vt1';
execute stmt;
x
2
1
drop prepare stmt;
select * from t1 for system_time as of timestamp @t1;
x
1
select * from vt1 for system_time as of timestamp @t1;
x
1
prepare stmt from 'select * from vt1 for system_time as of timestamp @t1';
execute stmt;
x
1
drop prepare stmt;
create or replace view vt1 as select * from t1;
select * from vt1 for system_time all;
x
prepare stmt from 'select * from vt1 for system_time all';
execute stmt;
x
drop prepare stmt;
insert into vt1 values (3);
select * from t1;
x
3
select * from vt1;
x
3
select * from t1 for system_time all;
x
2
1
3
select * from vt1 for system_time all;
x
3
create or replace table t1 (x int) with system versioning;
insert into t1 values (1), (2);
set @t1=now(6);
delete from t1 where x=2;
set @t2=now(6);
delete from t1 where x=1;
set @t3=now(6);
set @tmp= concat("create or replace view vt1 as select * from t1 for system_time as of timestamp '", @t1, "'");
prepare stmt from @tmp;
execute stmt;
drop prepare stmt;
select * from vt1 for system_time all;
x
1
2
# VIEW with parameters [#151]
create or replace table t1 (x int) with system versioning;
create or replace view vt1(c) as select x from t1;
show create view vt1;
View	Create View	character_set_client	collation_connection
vt1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `vt1` AS select `t1`.`x` AS `c`,`t1`.`sys_trx_start` AS `sys_trx_start`,`t1`.`sys_trx_end` AS `sys_trx_end` from `t1` FOR SYSTEM_TIME ALL where `t1`.`sys_trx_end` = MAX_RESULT	latin1	latin1_swedish_ci
# VIEW over JOIN of versioned tables [#153]
create or replace table t1 (a int) with system versioning;
create or replace table t2 (b int) with system versioning;
insert into t1 values (1);
insert into t2 values (2);
create or replace view vt12 as select * from t1 cross join t2;
select * from vt12;
a	b
1	2
create or replace view vt12 as select * from t1 for system_time as of timestamp '0-0-0' cross join t2;
select * from vt12;
a	b
# VIEW improvements [#183]
create or replace view vt1 as select a, t1.sys_trx_start, t2.sys_trx_end from t1, t2;
ERROR HY000: Creating VIEW `vt1` is prohibited: system fields from multiple tables `t1`, `t2` in query!
create or replace view vt1 as select a, t1.sys_trx_end, t2.sys_trx_end from t1, t2;
ERROR HY000: Creating VIEW `vt1` is prohibited: multiple end system fields `t1.sys_trx_end`, `t2.sys_trx_end` in query!
create or replace table t3 (x int);
create or replace view vt1 as select * from t1, t2, t3;
show create view vt1;
View	Create View	character_set_client	collation_connection
vt1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `vt1` AS select `t1`.`a` AS `a`,`t2`.`b` AS `b`,`t3`.`x` AS `x`,`t1`.`sys_trx_start` AS `sys_trx_start`,`t1`.`sys_trx_end` AS `sys_trx_end` from ((`t1` FOR SYSTEM_TIME ALL join `t2` FOR SYSTEM_TIME ALL) join `t3`) where `t1`.`sys_trx_end` = MAX_RESULT and `t2`.`sys_trx_end` = MAX_RESULT	latin1	latin1_swedish_ci
create or replace view vt1 as select * from t3, t2, t1;
show create view vt1;
View	Create View	character_set_client	collation_connection
vt1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `vt1` AS select `t3`.`x` AS `x`,`t2`.`b` AS `b`,`t1`.`a` AS `a`,`t2`.`sys_trx_start` AS `sys_trx_start`,`t2`.`sys_trx_end` AS `sys_trx_end` from ((`t3` join `t2` FOR SYSTEM_TIME ALL) join `t1` FOR SYSTEM_TIME ALL) where `t2`.`sys_trx_end` = MAX_RESULT and `t1`.`sys_trx_end` = MAX_RESULT	latin1	latin1_swedish_ci
create or replace view vt1 as select a, t2.sys_trx_end as endo from t3, t1, t2;
show create view vt1;
View	Create View	character_set_client	collation_connection
vt1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `vt1` AS select `t1`.`a` AS `a`,`t2`.`sys_trx_end` AS `endo`,`t2`.`sys_trx_start` AS `sys_trx_start` from ((`t3` join `t1` FOR SYSTEM_TIME ALL) join `t2` FOR SYSTEM_TIME ALL) where `t1`.`sys_trx_end` = MAX_RESULT and `t2`.`sys_trx_end` = MAX_RESULT	latin1	latin1_swedish_ci
# VIEW over UNION [#269]
create or replace view vt1 as select * from t1 union select * from t1;
select * from vt1;
a
1
create or replace view vvt1 as select * from t1, t2, vt1;
ERROR HY000: Creating VIEW `vvt1` is prohibited: versioned VIEW `vt1` in query!
drop database test;
create database test;