153 lines
3.9 KiB
Plaintext
153 lines
3.9 KiB
Plaintext
#
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# Bug #19027905 ASSERT RET.SECOND DICT_CREATE_FOREIGN_CONSTRAINTS_LOW
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# DICT_CREATE_FOREIGN_CONSTR
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#
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create table t1 (f1 int primary key) engine=InnoDB;
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create table t2 (f1 int primary key,
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constraint c1 foreign key (f1) references t1(f1),
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constraint c1 foreign key (f1) references t1(f1)) engine=InnoDB;
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ERROR HY000: Cannot add foreign key constraint
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create table t2 (f1 int primary key,
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constraint c1 foreign key (f1) references t1(f1)) engine=innodb;
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alter table t2 add constraint c1 foreign key (f1) references t1(f1);
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ERROR 23000: Can't write; duplicate key in table '#sql-temporary'
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set foreign_key_checks = 0;
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alter table t2 add constraint c1 foreign key (f1) references t1(f1);
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ERROR HY000: Duplicate foreign key constraint name 'test/c1'
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drop table t2, t1;
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#
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# Bug #20031243 CREATE TABLE FAILS TO CHECK IF FOREIGN KEY COLUMN
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# NULL/NOT NULL MISMATCH
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#
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set foreign_key_checks = 1;
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show variables like 'foreign_key_checks';
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Variable_name Value
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foreign_key_checks ON
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CREATE TABLE t1
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(a INT NOT NULL,
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b INT NOT NULL,
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INDEX idx(a)) ENGINE=InnoDB;
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CREATE TABLE t2
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(a INT KEY,
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b INT,
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INDEX ind(b),
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FOREIGN KEY (b) REFERENCES t1(a) ON DELETE CASCADE ON UPDATE CASCADE)
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ENGINE=InnoDB;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) NOT NULL,
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`b` int(11) NOT NULL,
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KEY `idx` (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`a` int(11) NOT NULL,
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`b` int(11) DEFAULT NULL,
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PRIMARY KEY (`a`),
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KEY `ind` (`b`),
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CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`b`) REFERENCES `t1` (`a`) ON DELETE CASCADE ON UPDATE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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INSERT INTO t1 VALUES (1, 80);
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INSERT INTO t1 VALUES (2, 81);
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INSERT INTO t1 VALUES (3, 82);
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INSERT INTO t1 VALUES (4, 83);
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INSERT INTO t1 VALUES (5, 84);
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INSERT INTO t2 VALUES (51, 1);
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INSERT INTO t2 VALUES (52, 2);
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INSERT INTO t2 VALUES (53, 3);
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INSERT INTO t2 VALUES (54, 4);
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INSERT INTO t2 VALUES (55, 5);
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SELECT a, b FROM t1 ORDER BY a;
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a b
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1 80
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2 81
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3 82
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4 83
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5 84
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SELECT a, b FROM t2 ORDER BY a;
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a b
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51 1
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52 2
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53 3
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54 4
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55 5
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INSERT INTO t2 VALUES (56, 6);
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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)
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ALTER TABLE t1 CHANGE a id INT;
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SELECT id, b FROM t1 ORDER BY id;
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id b
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1 80
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2 81
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3 82
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4 83
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5 84
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SELECT a, b FROM t2 ORDER BY a;
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a b
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51 1
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52 2
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53 3
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54 4
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55 5
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# Operations on child table
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INSERT INTO t2 VALUES (56, 6);
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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)
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UPDATE t2 SET b = 99 WHERE a = 51;
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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)
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DELETE FROM t2 WHERE a = 53;
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SELECT id, b FROM t1 ORDER BY id;
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id b
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1 80
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2 81
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3 82
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4 83
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5 84
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SELECT a, b FROM t2 ORDER BY a;
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a b
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51 1
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52 2
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54 4
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55 5
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# Operations on parent table
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DELETE FROM t1 WHERE id = 1;
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UPDATE t1 SET id = 50 WHERE id = 5;
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SELECT id, b FROM t1 ORDER BY id;
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id b
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2 81
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3 82
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4 83
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50 84
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SELECT a, b FROM t2 ORDER BY a;
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a b
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52 2
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54 4
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55 50
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DROP TABLE t2, t1;
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#
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# bug#25126722 FOREIGN KEY CONSTRAINT NAME IS NULL AFTER RESTART
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# base bug#24818604 [GR]
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#
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CREATE TABLE t1 (c1 INT PRIMARY KEY);
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CREATE TABLE t2 (c1 INT PRIMARY KEY, FOREIGN KEY (c1) REFERENCES t1(c1));
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INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (1);
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SELECT unique_constraint_name FROM information_schema.referential_constraints
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WHERE table_name = 't2';
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unique_constraint_name
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PRIMARY
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# restart
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SELECT unique_constraint_name FROM information_schema.referential_constraints
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WHERE table_name = 't2';
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unique_constraint_name
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PRIMARY
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SELECT * FROM t1;
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c1
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1
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SELECT unique_constraint_name FROM information_schema.referential_constraints
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WHERE table_name = 't2';
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unique_constraint_name
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PRIMARY
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DROP TABLE t2;
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DROP TABLE t1;
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