mariadb/mysql-test/suite/versioning/t/foreign.test

-- source include/have_innodb.inc

#################
# Test RESTRICT #
#################

create table parent(
  id int unique key
) engine innodb;

create table child(
  parent_id int,
  foreign key(parent_id) references parent(id)
    on delete restrict
    on update restrict
) engine innodb with system versioning;

insert into parent values(1);
insert into child values(1);

-- error ER_ROW_IS_REFERENCED_2
delete from parent where id = 1;
delete from child where parent_id = 1;
delete from parent where id = 1;

insert into parent values(1);
insert into child values(1);
-- error ER_ROW_IS_REFERENCED_2
update parent set id=id+1;
delete from child;
update parent set id=id+1;
select * from child for system_time from timestamp '1-1-1' to timestamp now(6);

drop table child;
drop table parent;

##############################################
# Test when clustered index is a foreign key #
##############################################

create table parent(
  id int(10) unsigned unique key
) engine innodb;

create table child(
  parent_id int(10) unsigned primary key,
  foreign key(parent_id) references parent(id)
) engine innodb with system versioning;

insert into parent values(1);
insert into child values(1);

-- error ER_ROW_IS_REFERENCED_2
delete from parent where id = 1;

drop table child;
drop table parent;

################
# Test CASCADE #
################

create table parent(
  id int unique key
) engine innodb;

create table child(
  parent_id int,
  foreign key(parent_id) references parent(id)
    on delete cascade
    on update cascade
) engine innodb with system versioning;

insert into parent values(1);
insert into child values(1);

delete from parent where id = 1;
select * from child;
select * from child for system_time all;

insert into parent values(1);
insert into child values(1);
update parent set id = id + 1;
select * from child;
select * from child for system_time all;

drop table child;
drop table parent;

create or replace table parent (
  id int primary key
) with system versioning
engine innodb;

create or replace table child (
  x int,
  parent_id int not null,
  constraint `parent-fk`
  foreign key (parent_id) references parent (id)
      on delete cascade
      on update restrict
)
engine innodb;

insert into parent (id) values (2);
insert into child (x, parent_id) values (2, 2);
delete from parent;
select * from child;

drop table child;
drop table parent;

create or replace table parent (
  id int primary key
)
engine innodb;

create or replace table child (
  id int primary key,
  parent_id int not null,
  constraint `parent-fk`
  foreign key (parent_id) references parent (id)
      on delete cascade
      on update restrict
) with system versioning
engine innodb;

insert into parent (id) values (3);
insert into child (id, parent_id) values (3, 3);
delete from parent;
select * from child;
select * from child for system_time all;

drop table child;
drop table parent;

#################
# Test SET NULL #
#################

create table parent(
  id int unique key
) engine innodb;

create table child(
  parent_id int,
  foreign key(parent_id) references parent(id)
    on delete set null
    on update set null
) engine innodb with system versioning;

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;
select * from child for system_time from timestamp '1-1-1' to timestamp now(6);
delete from child;

insert into parent values(1);
insert into child values(1);
update parent set id=id+1;
select * from child;
select * from child for system_time from timestamp '1-1-1' to timestamp now(6);

drop table child;
drop table parent;

###########################
# Parent table is foreign #
###########################

create or replace table parent(
  id int unique key
) engine innodb with system versioning;

create or replace table child(
  parent_id int,
  foreign key(parent_id) references parent(id)
) engine innodb;

insert into parent values(1);
insert into child values(1);
-- error ER_ROW_IS_REFERENCED_2
delete from parent;
-- error ER_ROW_IS_REFERENCED_2
update parent set id=2;

delete from child;
delete from parent;

-- error ER_NO_REFERENCED_ROW_2
insert into child values(1);

insert into parent values(1);
insert into child values(1);
-- error ER_ROW_IS_REFERENCED_2
delete from parent;
-- error ER_ROW_IS_REFERENCED_2
update parent set id=2;

drop table child;
drop table parent;