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#
# Bug #19027905 ASSERT RET.SECOND DICT_CREATE_FOREIGN_CONSTRAINTS_LOW
# DICT_CREATE_FOREIGN_CONSTR
#
create table t1 (f1 int primary key) engine=InnoDB;
create table t2 (f1 int primary key,
constraint c1 foreign key (f1) references t1(f1),
constraint c1 foreign key (f1) references t1(f1)) engine=InnoDB;
ERROR HY000: Cannot add foreign key constraint
create table t2 (f1 int primary key,
constraint c1 foreign key (f1) references t1(f1)) engine=innodb;
alter table t2 add constraint c1 foreign key (f1) references t1(f1);
ERROR 23000: Can't write; duplicate key in table '#sql-temporary'
set foreign_key_checks = 0;
alter table t2 add constraint c1 foreign key (f1) references t1(f1);
ERROR HY000: Duplicate foreign key constraint name 'test/c1'
drop table t2, t1;
#
# Bug #20031243 CREATE TABLE FAILS TO CHECK IF FOREIGN KEY COLUMN
# NULL/NOT NULL MISMATCH
#
set foreign_key_checks = 1;
show variables like 'foreign_key_checks';
Variable_name	Value
foreign_key_checks	ON
CREATE TABLE t1
(a INT NOT NULL,
b INT NOT NULL,
INDEX idx(a)) ENGINE=InnoDB;
CREATE TABLE t2
(a INT KEY,
b INT,
INDEX ind(b),
FOREIGN KEY (b) REFERENCES t1(a) ON DELETE CASCADE ON UPDATE CASCADE)
ENGINE=InnoDB;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL,
  `b` int(11) NOT NULL,
  KEY `idx` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` int(11) NOT NULL,
  `b` int(11) DEFAULT NULL,
  PRIMARY KEY (`a`),
  KEY `ind` (`b`),
  CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`a`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES (1, 80);
INSERT INTO t1 VALUES (2, 81);
INSERT INTO t1 VALUES (3, 82);
INSERT INTO t1 VALUES (4, 83);
INSERT INTO t1 VALUES (5, 84);
INSERT INTO t2 VALUES (51, 1);
INSERT INTO t2 VALUES (52, 2);
INSERT INTO t2 VALUES (53, 3);
INSERT INTO t2 VALUES (54, 4);
INSERT INTO t2 VALUES (55, 5);
SELECT a, b FROM t1 ORDER BY a;
a	b
1	80
2	81
3	82
4	83
5	84
SELECT a, b FROM t2 ORDER BY a;
a	b
51	1
52	2
53	3
54	4
55	5
INSERT INTO t2 VALUES (56, 6);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`a`) ON DELETE CASCADE ON UPDATE CASCADE)
ALTER TABLE t1 CHANGE a id INT;
SELECT id, b FROM t1 ORDER BY id;
id	b
1	80
2	81
3	82
4	83
5	84
SELECT a, b FROM t2 ORDER BY a;
a	b
51	1
52	2
53	3
54	4
55	5
# Operations on child table
INSERT INTO t2 VALUES (56, 6);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE)
UPDATE t2 SET b = 99 WHERE a = 51;
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE)
DELETE FROM t2 WHERE a = 53;
SELECT id, b FROM t1 ORDER BY id;
id	b
1	80
2	81
3	82
4	83
5	84
SELECT a, b FROM t2 ORDER BY a;
a	b
51	1
52	2
54	4
55	5
# Operations on parent table
DELETE FROM t1 WHERE id = 1;
UPDATE t1 SET id = 50 WHERE id = 5;
SELECT id, b FROM t1 ORDER BY id;
id	b
2	81
3	82
4	83
50	84
SELECT a, b FROM t2 ORDER BY a;
a	b
52	2
54	4
55	50
DROP TABLE t2, t1;
#
# bug#25126722 FOREIGN KEY CONSTRAINT NAME IS NULL AFTER RESTART
# base bug#24818604 [GR]
#
CREATE TABLE t1 (c1 INT PRIMARY KEY);
CREATE TABLE t2 (c1 INT PRIMARY KEY, FOREIGN KEY (c1) REFERENCES t1(c1));
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
unique_constraint_name
PRIMARY
# restart
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
unique_constraint_name
PRIMARY
SELECT * FROM t1;
c1
1
SELECT unique_constraint_name FROM information_schema.referential_constraints
WHERE table_name = 't2';
unique_constraint_name
PRIMARY
DROP TABLE t2;
DROP TABLE t1;
#
# Bug#33053297 VIRTUAL INDEX CORRUPTED DURING CASCADE UPDATE ON CHILD TABLE
#
#Test-Case 1
CREATE TABLE `emails` (
`id` int unsigned NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
CREATE TABLE `email_stats` (
`id` bigint unsigned NOT NULL AUTO_INCREMENT,
`email_id` int unsigned DEFAULT NULL,
`date_sent` datetime NOT NULL,
`generated_sent_date` date GENERATED ALWAYS AS
(concat(year(`date_sent`),'-',lpad(month(`date_sent`),2,'0'),
'-',lpad(dayofmonth(`date_sent`),2,'0'))) VIRTUAL,
PRIMARY KEY (`id`),
KEY `IDX_ES1` (`email_id`),
KEY `mautic_generated_sent_date_email_id`
(`generated_sent_date`,`email_id`),
CONSTRAINT `FK_EA1` FOREIGN KEY (`email_id`) REFERENCES
`emails` (`id`) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
INSERT INTO `emails` VALUES (1);
INSERT INTO `email_stats` (`id`, `email_id`,  `date_sent`) VALUES
(1,1,'2020-10-22 13:32:41');
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_date
1	1	2020-10-22 13:32:41	2020-10-22
DELETE FROM `emails`;
DELETE FROM `email_stats`;
DROP TABLE `email_stats`;
DROP TABLE `emails`;
# Test-Case 2
CREATE TABLE `emails` (
`id` int unsigned NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
CREATE TABLE `email_stats` (
`id` bigint unsigned NOT NULL AUTO_INCREMENT,
`email_id` int unsigned DEFAULT NULL,
`date_sent` datetime NOT NULL,
`generated_sent_date` date GENERATED ALWAYS AS
(concat(year(`date_sent`),'-',lpad(month(`date_sent`),2,'0'),
'-',lpad(dayofmonth(`date_sent`),2,'0'))) VIRTUAL,
PRIMARY KEY (`id`),
KEY `IDX_ES1` (`email_id`),
KEY `mautic_generated_sent_date_email_id`
(`generated_sent_date`,`email_id`),
CONSTRAINT `FK_EA1` FOREIGN KEY (`email_id`) REFERENCES
`emails` (`id`) ON DELETE SET NULL ON UPDATE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
INSERT INTO `emails` VALUES (1);
INSERT INTO `email_stats` (`id`, `email_id`,  `date_sent`) VALUES
(1,1,'2020-10-22 13:32:41');
UPDATE `emails` SET `id` = 2 where `id` = 1;
SELECT id FROM `email_stats` WHERE `generated_sent_date` IS NULL;
id
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_date
1	NULL	2020-10-22 13:32:41	2020-10-22
UPDATE `email_stats` SET `email_id`=2
WHERE DATE(`generated_sent_date`) = '2020-10-22';
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_date
1	2	2020-10-22 13:32:41	2020-10-22
DROP TABLE `email_stats`;
DROP TABLE `emails`;
# test-case 3
CREATE TABLE `emails` (
`id` int unsigned NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
CREATE TABLE `email_stats` (
`id` bigint unsigned NOT NULL AUTO_INCREMENT,
`email_id` int unsigned DEFAULT NULL,
`date_sent` datetime NOT NULL,
`generated_sent_email` varchar(20) GENERATED ALWAYS AS
(CONCAT(YEAR(`date_sent`),'-', COALESCE(`email_id`, ' '))) VIRTUAL,
PRIMARY KEY (`id`),
KEY `idx_es1` (`email_id`),
KEY `mautic_generated_sent_date_email`
(`generated_sent_email`,`email_id`),
CONSTRAINT `fk_ea1` FOREIGN KEY (`email_id`) REFERENCES
`emails` (`id`) ON DELETE SET NULL
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
INSERT INTO `emails` VALUES (1);
INSERT INTO `email_stats` (`id`, `email_id`,  `date_sent`) VALUES
(1,1,'2020-10-22 13:32:41');
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_email
1	1	2020-10-22 13:32:41	2020-1
SELECT `date_sent` FROM `email_stats` WHERE `generated_sent_email` = '2020-1';
date_sent
2020-10-22 13:32:41
DELETE FROM `emails`;
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_email
1	NULL	2020-10-22 13:32:41	2020- 
SELECT `date_sent` FROM `email_stats` WHERE `generated_sent_email` = '2020-';
date_sent
2020-10-22 13:32:41
DROP TABLE `email_stats`;
DROP TABLE `emails`;
# test-case 4
CREATE TABLE `emails` (
`id` int unsigned NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
CREATE TABLE `email_stats` (
`id` bigint unsigned NOT NULL AUTO_INCREMENT,
`email_id` int unsigned DEFAULT NULL,
`date_sent` datetime NOT NULL,
`generated_sent_email` varchar(20) GENERATED ALWAYS AS
(CONCAT(YEAR(`date_sent`),'-', COALESCE(`email_id`, ' '))) VIRTUAL,
PRIMARY KEY (`id`),
KEY `idx_es1` (`email_id`),
KEY `mautic_generated_sent_date_email`
(`generated_sent_email`,`email_id`),
CONSTRAINT `fk_ea1` FOREIGN KEY (`email_id`) REFERENCES
`emails` (`id`) ON UPDATE SET NULL
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
ROW_FORMAT=DYNAMIC;
INSERT INTO `emails` VALUES (1);
INSERT INTO `email_stats` (`id`, `email_id`,  `date_sent`) VALUES
(1,1,'2020-10-22 13:32:41');
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_email
1	1	2020-10-22 13:32:41	2020-1
SELECT `date_sent` FROM `email_stats` WHERE `generated_sent_email` = '2020-1';
date_sent
2020-10-22 13:32:41
UPDATE `emails` SET `id` = 2 WHERE `id` = 1;
SELECT * FROM `email_stats`;
id	email_id	date_sent	generated_sent_email
1	NULL	2020-10-22 13:32:41	2020- 
SELECT `date_sent` FROM `email_stats` WHERE `generated_sent_email` = '2020-';
date_sent
2020-10-22 13:32:41
DROP TABLE `email_stats`;
DROP TABLE `emails`;