124 lines
2.4 KiB
Plaintext
124 lines
2.4 KiB
Plaintext
-- source include/have_ndb.inc
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create table parent (
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a int primary key auto_increment,
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b int not null,
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c int not null,
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unique(b) using hash,
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index(c)) engine = ndb;
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create table child (
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a int primary key auto_increment,
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b int,
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c int,
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unique(b) using hash,
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index(c)) engine = ndb;
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###
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### PK vs UK
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###
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alter table child add constraint fkname foreign key (b) references parent (a) on update restrict on delete set null;
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insert into parent values (1,1,1),(2,2,2);
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insert into child values (1,1,1),(2,2,2);
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--error 1452
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insert into child values (3,3,3);
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--error 1452
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update child set b = 3 where a = 1;
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begin;
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delete from parent where a = 1;
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select * from child order by 1,2,3;
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commit;
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delete from child;
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delete from parent;
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alter table child drop foreign key fkname;
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###
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### PK vs OI
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###
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alter table child add constraint fkname foreign key (c) references parent (a) on update restrict on delete set null;
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insert into parent values (1,1,1),(2,2,2);
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insert into child values (1,1,1),(2,2,2),(3,3,1);
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--error 1452
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update child set c = 3 where a = 1;
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--error 1452
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insert into child values (4,4,4);
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begin;
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delete from parent where a = 1;
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select * from child order by 1,2,3;
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commit;
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delete from child;
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delete from parent;
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alter table child drop foreign key fkname;
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###
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### UK vs UK
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###
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alter table child add constraint fkname foreign key (b) references parent (b) on update set null on delete set null;
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insert into parent values (1,1,1),(2,2,2);
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insert into child values (1,1,1),(2,2,2);
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--error 1452
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update child set b = 3 where a = 1;
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--error 1452
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insert into child values (3,3,3);
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begin;
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update parent set b = 3 where a = 1;
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select * from child order by 1,2,3;
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rollback;
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begin;
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delete from parent where a = 1;
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select * from child order by 1,2,3;
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commit;
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delete from child;
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delete from parent;
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alter table child drop foreign key fkname;
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###
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### UK vs OI
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###
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alter table child add constraint fkname foreign key (c) references parent (b) on update set null on delete set null;
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insert into parent values (1,1,1),(2,2,2);
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insert into child values (1,1,1),(2,2,2),(3,3,1);
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--error 1452
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update child set c = 3 where a = 1;
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--error 1452
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insert into child values (4,4,4);
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begin;
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update parent set b = 3 where a = 1;
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select * from child order by 1,2,3;
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rollback;
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begin;
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delete from parent where a = 1;
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select * from child order by 1,2,3;
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commit;
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delete from child;
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delete from parent;
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alter table child drop foreign key fkname;
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drop table parent, child;
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