--source include/have_innodb.inc

#
# MDEV-8524: Improve error messaging when there is duplicate key or foreign key names
#
CREATE TABLE t1 (
  id int(11) NOT NULL PRIMARY KEY,
  a int(11) NOT NULL,
  b int(11) NOT NULL,
  c int not null,
  CONSTRAINT test FOREIGN KEY (b) REFERENCES t1 (id)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

#
# Below create table fails because constraint name test
# is reserved for above table.
#
--error ER_CANT_CREATE_TABLE
CREATE TABLE t2 (
  id int(11) NOT NULL PRIMARY KEY,
  a int(11) NOT NULL,
  b int(11) NOT NULL,
  c int not null,
  CONSTRAINT mytest FOREIGN KEY (c) REFERENCES t1(id),
  CONSTRAINT test FOREIGN KEY (b) REFERENCES t2 (id)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

show warnings;

drop table t1;

#
# MDEV-6697: Improve foreign keys warnings/errors
#

#
# No index for referenced columns
#
create table t1(a int) engine=innodb;
--error ER_CANT_CREATE_TABLE
create table t2(a int, constraint a foreign key a (a) references t1(a)) engine=innodb;
show warnings;
drop table t1;

create table t1(a int unique, b int) engine=innodb;
--error ER_CANT_CREATE_TABLE
create table t2(a int, b int, foreign key (a) references t1(a), foreign key (b) references t1(b)) engine=innodb;
show warnings;
drop table t1;

create table t1(a int not null primary key, b int) engine=innodb;
--error ER_CANT_CREATE_TABLE
create table t2(a int, b int, constraint a foreign key a (a) references t1(a),
constraint a foreign key a (a) references t1(b)) engine=innodb;
show warnings;
create table t2(a int, b int, constraint a foreign key a (a) references t1(a)) engine=innodb;
--error ER_CANT_CREATE_TABLE
alter table t2 add constraint b foreign key (b) references t2(b);
show warnings;
drop table t2, t1;

#
# Referenced table does not exists
#

create table t1 (f1 integer primary key) engine=innodb;
--error ER_CANT_CREATE_TABLE
alter table t1 add constraint c1 foreign key (f1) references t11(f1);
show warnings;
drop table t1;

#
# Foreign key on temporal tables
#

create temporary table t1(a int not null primary key, b int, key(b)) engine=innodb;
# remove echos and uncomment the commented when MDEV-8569 is fixed
--echo create temporary table t2(a int, foreign key(a) references t1(a)) engine=innodb;
--echo ERROR HY000: Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
--echo show warnings;
--echo Level	Code	Message
--echo Warning	150	Create  table `mysqld.1`.`t2` with foreign key constraint failed. Referenced table `mysqld.1`.`t1` not found in the data dictionary close to foreign key(a) references t1(a)) engine=innodb.
--echo Error	1005	Can't create table `test`.`t2` (errno: 150 "Foreign key constraint is incorrectly formed")
--echo Warning	1215	Cannot add foreign key constraint
--echo alter table t1 add foreign key(b) references t1(a);
--echo ERROR HY000: Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
--echo show warnings;
--echo Level	Code	Message
--echo Warning	150	Alter  table `mysqld.1`.`t1` with foreign key constraint failed. Referenced table `mysqld.1`.`t1` not found in the data dictionary close to foreign key(b) references t1(a).
--echo Error	1005	Can't create table `test`.`#sql-temporary` (errno: 150 "Foreign key constraint is incorrectly formed")
--echo Warning	1215	Cannot add foreign key constraint
--error ER_CANT_CREATE_TABLE
create temporary table t2(a int, foreign key(a) references t1(a)) engine=innodb;
show warnings;
--error ER_CANT_CREATE_TABLE
alter table t1 add foreign key(b) references t1(a);
show warnings;
drop table t1;

#
# Column numbers do not match
#
create table t1(a int not null primary key, b int, key(b)) engine=innodb;
--error 1239
alter table t1 add foreign key(a,b) references t1(a);
show warnings;
drop table t1;
create table t1(a int not null primary key, b int, key(b)) engine=innodb;
--error 1239
alter table t1 add foreign key(a) references t1(a,b);
show warnings;
drop table t1;

#
# ON UPDATE/DELETE SET NULL on NOT NULL column
#
create table t1 (f1 integer not null primary key) engine=innodb;
--error ER_CANT_CREATE_TABLE
alter table t1 add constraint c1 foreign key (f1) references t1(f1) on update set null;
show warnings;
--error ER_CANT_CREATE_TABLE
create table t2(a int not null, foreign key(a) references t1(f1) on delete set null) engine=innodb;
show warnings;
drop table t1;

#
# Incorrect types
#
create table t1 (id int not null primary key, f1 int, f2 int, key(f1)) engine=innodb;
--error ER_CANT_CREATE_TABLE
create table t2(a char(20), key(a), foreign key(a) references t1(f1)) engine=innodb;
show warnings;
drop table t1;