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 *, row_end from t1 for system_time as of timestamp '", @t2, "'");
prepare stmt from @vt2;
execute stmt;
drop prepare stmt;
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` from `t1`	latin1	latin1_swedish_ci
drop view vt1;
drop view vt2;
create or replace view vt1 as select * from t1 for system_time all;
select * from vt1;
x
2
1
prepare stmt from 'select * from vt1';
execute stmt;
x
2
1
drop prepare stmt;
set @str= concat('create or replace view vt1 as
select * from t1 for system_time as of timestamp "', @t1, '"');
prepare stmt from @str;
execute stmt;
drop prepare stmt;
select * from t1 for system_time as of timestamp @t1;
x
1
select * from vt1;
x
1
insert into vt1 values (3);
select * from t1;
x
3
select * from vt1;
x
1
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;
x
1
2
# VIEW with parameters [tempesta-tech/mariadb#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` from `t1`	latin1	latin1_swedish_ci
# VIEW over JOIN of versioned tables [tempesta-tech/mariadb#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 ('1970-01-01 00:00') cross join t2;
select * from vt12;
a	b
# VIEW improvements [tempesta-tech/mariadb#183]
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` from ((`t1` join `t2`) join `t3`)	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` from ((`t3` join `t2`) join `t1`)	latin1	latin1_swedish_ci
create or replace view vt1 as select a, t2.row_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`.`row_end` AS `endo` from ((`t3` join `t1`) join `t2`)	latin1	latin1_swedish_ci
# VIEW over UNION [tempesta-tech/mariadb#269]
create or replace view vt1 as select * from t1 union select * from t1;
select * from vt1;
a
1
# VIEW over UNION with non-versioned [tempesta-tech/mariadb#393]
create or replace table t2 (a int);
create or replace view vt1 as select * from t1 union select * from t2;
select * from vt1;
a
1
#
# MDEV-14689 crash on second PS execute
#
create or replace table t1 (a int);
create or replace view v1 as select * from t1;
create or replace table t2 (b int) with system versioning;
prepare stmt from 'select a from v1 inner join t2 group by a order by a';
execute stmt;
a
execute stmt;
a
drop view v1;
drop tables t1, t2;
#
# MDEV-15146 SQLError[4122]: View is not system versioned
#
create or replace table t1 (a int) with system versioning;
insert t1 values (1),(2);
set @a=now(6);
create or replace view v1 as select * from t1;
delete from t1;
select * from v1;
a
select * from v1 for system_time as of @a;
a
1
2
show create view v1;
View	Create View	character_set_client	collation_connection
v1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a` from `t1`	latin1	latin1_swedish_ci
#
# MDEV-15378 Valid query causes invalid view definition due to syntax limitation in FOR SYSTEM_TIME
#
create or replace table t1 (i int) with system versioning;
select * from t1 for system_time as of now() - interval 6 second;
i
create or replace view v1 as select * from t1 for system_time as of date_sub(now(), interval 6 second);
show create view v1;
View	Create View	character_set_client	collation_connection
v1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`i` AS `i` from `t1` FOR SYSTEM_TIME AS OF TIMESTAMP current_timestamp() - interval 6 second	latin1	latin1_swedish_ci
drop view v1, vt1, vt12;
drop tables t1, t3;
#
# MDEV-18727 improve DML operation of System Versioning
#
create or replace table t1 (
x int,
row_start SYS_DATATYPE as row start invisible,
row_end SYS_DATATYPE as row end invisible,
period for system_time (row_start, row_end)
) with system versioning;
insert into t1 values (1), (2);
create or replace view v1 as select * from t1 where x > 1;
# update, delete
update v1 set x= x + 1;
select *, check_row(row_start, row_end) from t1 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	CURRENT ROW
insert v1 values (4);
select *, check_row(row_start, row_end) from t1 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	CURRENT ROW
4	CURRENT ROW
delete from v1 where x < 4;
select *, check_row(row_start, row_end) from t1 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	HISTORICAL ROW
4	CURRENT ROW
# multi-update
create or replace table t2 like t1;
insert into t2 values (1), (2);
create or replace view v2 as select * from t2 where x > 1;
update v1, v2 set v1.x= v1.x + 1, v2.x= v2.x + 1 where v1.x = v2.x + 2;
select *, check_row(row_start, row_end) from t1 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	HISTORICAL ROW
4	HISTORICAL ROW
5	CURRENT ROW
select *, check_row(row_start, row_end) from t2 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	CURRENT ROW
# multi-delete
delete v1, v2 from v1 join v2 where v1.x = v2.x + 2;
select *, check_row(row_start, row_end) from t1 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	HISTORICAL ROW
4	HISTORICAL ROW
5	HISTORICAL ROW
select *, check_row(row_start, row_end) from t2 for system_time all order by x;
x	check_row(row_start, row_end)
1	CURRENT ROW
2	HISTORICAL ROW
3	HISTORICAL ROW
# replace
create or replace table t1 (
x int primary key, y int,
row_start SYS_DATATYPE as row start invisible,
row_end SYS_DATATYPE as row end invisible,
period for system_time (row_start, row_end)
) with system versioning;
insert into t1 values (1, 0), (2, 0);
create or replace view v1 as select * from t1 where x > 1;
replace v1 values (1, 1);
replace v1 values (2, 1);
replace v1 values (3, 1);
# REPLACE ignores VIEW condition because itself doesn't use WHERE
select *, check_row(row_start, row_end) from t1 for system_time all order by x, row_end;
x	y	check_row(row_start, row_end)
1	0	HISTORICAL ROW
1	1	CURRENT ROW
2	0	HISTORICAL ROW
2	1	CURRENT ROW
3	1	CURRENT ROW
# insert-select, on duplicate key
insert v1 select * from t1 where x = 1 on duplicate key update x = v1.x - 1;
select *, check_row(row_start, row_end) from t1 for system_time all order by x, row_end;
x	y	check_row(row_start, row_end)
0	1	CURRENT ROW
1	0	HISTORICAL ROW
1	1	HISTORICAL ROW
2	0	HISTORICAL ROW
2	1	CURRENT ROW
3	1	CURRENT ROW
drop view v1, v2;
drop tables t1, t2;
#
# MDEV-21146 Assertion `m_lock_type == 2' in handler::ha_drop_table upon LOAD DATA
#
create table t1 (a int);
create view v1 as select * from t1;
create or replace table t1 (b int) with system versioning;
load data infile 'xx' into table v1;
ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
drop view v1;
drop table t1;
#
# MDEV-21155 Assertion with versioned table upon DELETE from view of view after replacing first view
#
create table t1 (a int);
insert into t1 values (1);
create table t2 (
b int,
row_start SYS_DATATYPE as row start invisible,
row_end SYS_DATATYPE as row end invisible,
period for system_time (row_start, row_end)
) with system versioning;
insert into t2 values (2);
create view v1 as select * from t1;
create view v2 as select * from v1;
create or replace view v1 as select * from t2;
delete from v2;
select * from t1;
a
1
select *, check_row(row_start, row_end) from t2 for system_time all;
b	check_row(row_start, row_end)
2	HISTORICAL ROW
drop view v2;
drop view v1;
drop table t1, t2;
#
# MDEV-23779 Error upon querying the view, that selecting from versioned table with partitions
#
create table t1 (i int) with system versioning
partition by system_time (partition p0 history, partition pn current);
create view v1 as select * from t1 partition (pn);
show create view v1;
View	Create View	character_set_client	collation_connection
v1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`i` AS `i` from `t1` PARTITION (`pn`)	latin1	latin1_swedish_ci
drop view v1;
drop table t1;