MDEV-15364 FOREIGN CASCADE operations in system versioned referenced …

…tables

Merge pull request #667

mysql-test/suite/versioning/common.inc

@@ -77,4 +77,26 @@ if ($MTR_COMBINATION_TRX_ID)
   let $sys_datatype_expl_uc= BIGINT(20) UNSIGNED;
   let $sys_datatype_max= 18446744073709551615;
 }
+
+eval create or replace function current_row(sys_trx_end $sys_datatype_expl)
+returns int
+deterministic
+  return sys_trx_end = $sys_datatype_max;
+
+delimiter ~~;
+eval create or replace function check_row(row_start $sys_datatype_expl, row_end $sys_datatype_expl)
+returns varchar(255)
+deterministic
+begin
+  if row_end < row_start then
+    return "ERROR: row_end < row_start";
+  elseif row_end = row_start then
+    return "ERROR: row_end == row_start";
+  elseif current_row(row_end) then
+    return "CURRENT ROW";
+  end if;
+  return "HISTORICAL ROW";
+end~~
+delimiter ;~~
+
 --enable_query_log

mysql-test/suite/versioning/common_finish.inc

@@ -4,4 +4,6 @@ drop procedure verify_vtq_dummy;
 drop function sys_commit_ts;
 drop procedure concat_exec2;
 drop procedure concat_exec3;
+drop function current_row;
+drop function check_row;
 --enable_query_log

mysql-test/suite/versioning/r/foreign.result

@@ -6,8 +6,8 @@ id int unique key
 ) engine innodb;
 create table child(
 parent_id int,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end),
 foreign key(parent_id) references parent(id)
 on delete restrict
@@ -25,7 +25,7 @@ update parent set id=id+1;
 ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY (`parent_id`) REFERENCES `parent` (`id`))
 delete from child;
 update parent set id=id+1;
-select * from child for system_time from timestamp 0 to timestamp now(6);
+select * from child for system_time all;
 parent_id
 1
 1
@@ -39,8 +39,8 @@ id int(10) unsigned unique key
 ) engine innodb;
 create table child(
 parent_id int(10) unsigned primary key,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end),
 foreign key(parent_id) references parent(id)
 ) engine innodb with system versioning;
@@ -58,19 +58,38 @@ id int unique key
 ) engine innodb;
 create table child(
 parent_id int,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end),
 foreign key(parent_id) references parent(id)
 on delete cascade
 on update cascade
 ) engine innodb with system versioning;
-ERROR HY000: CASCADE is not supported for TIMESTAMP(6) AS ROW START/END system-versioned tables
+insert into parent values(1);
+insert into child values(1);
+delete from parent where id = 1;
+select * from child;
+parent_id
+select * from child for system_time all;
+parent_id
+1
+insert into parent values(1);
+insert into child values(1);
+update parent set id = id + 1;
+select * from child;
+parent_id
+2
+select * from child for system_time all;
+parent_id
+1
+1
+2
+drop table child;
 drop table parent;
 create or replace table parent (
 id int primary key,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end)
 ) with system versioning
 engine innodb;
@@ -97,41 +116,76 @@ engine innodb;
 create or replace table child (
 id int primary key,
 parent_id int not null,
-row_start timestamp(6) as row start invisible,
-row_end timestamp(6) as row end invisible,
+row_start SYS_DATATYPE as row start invisible,
+row_end SYS_DATATYPE as row end invisible,
 period for system_time(row_start, row_end),
 constraint `parent-fk`
   foreign key (parent_id) references parent (id)
 on delete cascade
 on update restrict
 ) with system versioning
 engine innodb;
-ERROR HY000: CASCADE is not supported for TIMESTAMP(6) AS ROW START/END system-versioned tables
+insert into parent (id) values (3);
+insert into child (id, parent_id) values (3, 3);
+delete from parent;
+select * from child;
+id	parent_id
+select *, check_row(row_start, row_end) from child for system_time all;
+id	parent_id	check_row(row_start, row_end)
+3	3	HISTORICAL ROW
+drop table child;
 drop table parent;
 #################
 # Test SET NULL #
 #################
-create table parent(
+create or replace table parent(
 id int unique key
 ) engine innodb;
-create table child(
+create or replace table child(
 parent_id int,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end),
 foreign key(parent_id) references parent(id)
 on delete set null
 on update set null
 ) engine innodb with system versioning;
-ERROR HY000: SET NULL is not supported for TIMESTAMP(6) AS ROW START/END system-versioned tables
+insert into parent values(1);
+insert into child values(1);
+delete from child;
+insert into child values(1);
+delete from parent where id = 1;
+select * from child;
+parent_id
+NULL
+select *, current_row(sys_end) as current_row from child for system_time all order by sys_end;
+parent_id	current_row
+1	0
+1	0
+NULL	1
+delete from child;
+insert into parent values(1);
+insert into child values(1);
+update parent set id= id + 1;
+select * from child;
+parent_id
+NULL
+select *, current_row(sys_end) as current_row from child for system_time all order by sys_end;
+parent_id	current_row
+1	0
+1	0
+NULL	0
+1	0
+NULL	1
+drop table child;
 drop table parent;
 ###########################
 # Parent table is foreign #
 ###########################
 create or replace table parent(
 id int unique key,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end)
 ) engine innodb with system versioning;
 create or replace table child(
@@ -162,16 +216,16 @@ drop table parent;
 create or replace table a (
 cola int(10) primary key,
 v_cola int(10) as (cola mod 10) virtual,
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end)
 ) engine=innodb with system versioning;
 create index v_cola on a (v_cola);
 create or replace table b(
 cola int(10),
 v_cola int(10),
-sys_start timestamp(6) as row start invisible,
-sys_end timestamp(6) as row end invisible,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
 period for system_time(sys_start, sys_end)
 ) engine=innodb with system versioning;
 alter table b add constraint `v_cola_fk`
@@ -181,3 +235,58 @@ insert into b(cola, v_cola) values (10,2);
 delete from a;
 ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`b`, CONSTRAINT `v_cola_fk` FOREIGN KEY (`v_cola`) REFERENCES `a` (`v_cola`))
 drop table b, a;
+###############################################
+# CASCADE UPDATE foreign not system versioned #
+###############################################
+create or replace table parent (
+id smallint unsigned not null auto_increment,
+value int unsigned not null,
+primary key (id, value)
+) engine = innodb;
+create or replace table child (
+id mediumint unsigned not null auto_increment primary key,
+parent_id smallint unsigned not null,
+parent_value int unsigned not null,
+sys_start SYS_DATATYPE as row start invisible,
+sys_end SYS_DATATYPE as row end invisible,
+period for system_time(sys_start, sys_end),
+constraint `fk_child_parent`
+    foreign key (parent_id, parent_value) references parent (id, value)
+on delete cascade
+on update cascade
+) engine = innodb with system versioning;
+create or replace table subchild (
+id int not null auto_increment primary key,
+parent_id smallint unsigned not null,
+parent_value int unsigned not null,
+constraint `fk_subchild_child_parent`
+    foreign key (parent_id, parent_value) references child (parent_id, parent_value)
+on delete cascade
+on update cascade
+) engine=innodb;
+insert into parent (value) values (23);
+select id, value from parent into @id, @value;
+insert into child values (default, @id, @value);
+insert into subchild values (default, @id, @value);
+select parent_id from subchild;
+parent_id
+1
+update parent set id = 11, value = value + 1;
+select parent_id from subchild;
+parent_id
+11
+select * from child;
+id	parent_id	parent_value
+1	11	24
+delete from parent;
+select count(*) from child;
+count(*)
+0
+select * from child for system_time all;
+id	parent_id	parent_value
+1	1	23
+1	11	24
+select count(*) from subchild;
+count(*)
+0
+drop table subchild, child, parent;