110 lines
2.7 KiB
Plaintext
110 lines
2.7 KiB
Plaintext
--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;
|