--source include/have_ndb.inc

--echo #
--echo # basic, i_s.table_constraints, is.key_column_usage
--echo #

create table product (
  category int not null,
  id int not null,
  price decimal,
  primary key(category, id)
) engine=ndb;

create table customer (
  id int not null,
  primary key (id)
) engine=ndb;

create table product_order (
  no int not null auto_increment,
  product_category int not null,
  product_id int not null,
  customer_id int not null,
  primary key(no),
  index (product_category, product_id),
  constraint fk1 foreign key (product_category, product_id)
    references product(category, id)
    on update restrict on delete cascade,
  index (customer_id),
  constraint fk2 foreign key (customer_id) references customer(id)
) engine=ndb;

create table emp (
  id int primary key auto_increment,
  manager int,
  key (manager),
  constraint emp_fk1 foreign key (manager) references emp (id)
) engine=ndb;

select * from information_schema.table_constraints
  where table_schema = 'test'
  order by table_name, constraint_type, constraint_name;

select CONCAT_WS('.', TABLE_NAME, COLUMN_NAME) as COL,
       ORDINAL_POSITION,
       POSITION_IN_UNIQUE_CONSTRAINT,
       CONCAT_WS('.', REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME) as REFERENCED_COL
  from information_schema.key_column_usage
  where table_schema = 'test'
  order by COL, ORDINAL_POSITION;

drop table product_order, customer, product, emp;

--echo #
--echo # databases, circular, i_s.referential_constraints
--echo #

create database mydb1;
create database mydb2;

create table mydb1.t1 (
  a1 int not null,
  b1 int not null,
  primary key using hash (a1),
  unique key xb1 (b1)
) engine=ndb;

create table mydb2.t2 (
  a2 int not null,
  b2 int not null,
  primary key using hash (a2),
  unique key xb2 (b2)
) engine=ndb;

alter table mydb1.t1
  add constraint fk_b1a1 foreign key (b1) references mydb1.t1 (a1),
  add constraint fk_b1b2 foreign key (b1) references mydb2.t2 (b2);

alter table mydb2.t2
  add constraint fk_b2a2 foreign key (b2) references mydb2.t2 (a2),
  add constraint fk_b2b1 foreign key (b2) references mydb1.t1 (b1);

select *
  from information_schema.referential_constraints
  order by constraint_schema, constraint_name;

select *
  from information_schema.table_constraints
  where table_schema like 'mydb%'
  order by table_name, constraint_type, constraint_name;

select *
  from information_schema.key_column_usage
  where table_schema like 'mydb%'
  order by constraint_schema, constraint_name;

alter table mydb1.t1
  drop foreign key fk_b1a1,
  drop foreign key fk_b1b2;

alter table mydb2.t2
  drop foreign key fk_b2a2,
  drop foreign key fk_b2b1;

drop table mydb1.t1;
drop table mydb2.t2;

drop database mydb1;
drop database mydb2;