mirror of
https://github.com/MariaDB/server.git
synced 2025-08-01 03:47:19 +03:00
cffbb17480
Before MySQL 4.0.18, user-specified constraint names were ignored. Starting with MySQL 4.0.18, the specified constraint name was prepended with the schema name and '/'. Now we are transforming into a format where the constraint name is prepended with the dict_table_t::name and the impossible UTF-8 sequence 0xff. Generated constraint names will be ASCII decimal numbers. On upgrade, old FOREIGN KEY constraint names will be displayed without any schema name prefix. They will be updated to the new format on DDL operations. dict_foreign_t::sql_id(): Return the SQL constraint name without any schemaname/tablename\377 or schemaname/ prefix. row_rename_table_for_mysql(), dict_table_rename_in_cache(): Simplify the logic: Just rename constraints to the new format. dict_table_get_foreign_id(): Replaces dict_table_get_highest_foreign_id(). innobase_get_foreign_key_info(): Let my_error() refer to erroneous anonymous constraints as "(null)". row_delete_constraint(): Try to drop all 3 constraint name variants. Reviewed by: Thirunarayanan Balathandayuthapani Tested by: Matthias Leich
74 lines
2.2 KiB
Plaintext
74 lines
2.2 KiB
Plaintext
|
|
Testcase x.x.x.1:
|
|
-----------------
|
|
DROP TABLE IF EXISTS t0, t1, t2;
|
|
CREATE TABLE t0 (col1 CHAR(50))
|
|
ENGINE = <engine_to_be_tested>;
|
|
CREATE TABLE t1 (id INT NOT NULL, col1 CHAR(50), PRIMARY KEY (id))
|
|
ENGINE = <engine_to_be_tested>;
|
|
CREATE TABLE t2 (id INT PRIMARY KEY, f_id INT,
|
|
INDEX par_ind (f_id), col1 CHAR(50),
|
|
FOREIGN KEY (f_id) REFERENCES t1(id) ON DELETE SET NULL)
|
|
ENGINE = <engine_to_be_tested>;
|
|
INSERT INTO t1 VALUES (1,'Department A');
|
|
INSERT INTO t1 VALUES (2,'Department B');
|
|
INSERT INTO t1 VALUES (3,'Department C');
|
|
INSERT INTO t2 VALUES (1,2,'Emp 1');
|
|
INSERT INTO t2 VALUES (2,2,'Emp 2');
|
|
INSERT INTO t2 VALUES (3,2,'Emp 3');
|
|
CREATE TRIGGER trig AFTER INSERT ON t0 FOR EACH ROW
|
|
DELETE FROM t1 WHERE col1 = new.col1;
|
|
SELECT * FROM t2;
|
|
id f_id col1
|
|
1 2 Emp 1
|
|
2 2 Emp 2
|
|
3 2 Emp 3
|
|
LOCK TABLES t0 WRITE, t1 WRITE;
|
|
INSERT INTO t0 VALUES ('Department B');
|
|
UNLOCK TABLES;
|
|
SELECT * FROM t2;
|
|
id f_id col1
|
|
1 NULL Emp 1
|
|
2 NULL Emp 2
|
|
3 NULL Emp 3
|
|
DROP TRIGGER trig;
|
|
DROP TABLE t2, t1;
|
|
|
|
Testcase x.x.x.2:
|
|
-----------------
|
|
DROP TABLE IF EXISTS t1, t2;
|
|
CREATE TABLE t1 (id INT NOT NULL, col1 CHAR(50), PRIMARY KEY (id))
|
|
ENGINE = <engine_to_be_tested>;
|
|
CREATE TABLE t2 (id INT PRIMARY KEY, f_id INT,
|
|
INDEX par_ind (f_id), col1 CHAR(50),
|
|
FOREIGN KEY (f_id) REFERENCES t1(id) ON UPDATE CASCADE)
|
|
ENGINE = <engine_to_be_tested>;
|
|
INSERT INTO t1 VALUES (1,'Department A');
|
|
INSERT INTO t1 VALUES (2,'Department B');
|
|
INSERT INTO t1 VALUES (3,'Department C');
|
|
INSERT INTO t2 VALUES (1,2,'Emp 1');
|
|
INSERT INTO t2 VALUES (2,3,'Emp 2');
|
|
insert into t2 VALUES (3,4,'Emp 3');
|
|
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `1` FOREIGN KEY (`f_id`) REFERENCES `t1` (`id`) ON UPDATE CASCADE)
|
|
CREATE TRIGGER tr_t2 BEFORE INSERT ON t2 FOR EACH ROW
|
|
INSERT INTO t1 VALUES(new.f_id, CONCAT('New Department ', new.f_id));
|
|
LOCK TABLES t1 WRITE, t2 WRITE;
|
|
INSERT INTO t2 VALUES (3,4,'Emp 3');
|
|
UNLOCK TABLES;
|
|
SELECT * FROM t1;
|
|
id col1
|
|
1 Department A
|
|
2 Department B
|
|
3 Department C
|
|
4 New Department 4
|
|
SELECT * FROM t2;
|
|
id f_id col1
|
|
1 2 Emp 1
|
|
2 3 Emp 2
|
|
3 4 Emp 3
|
|
DROP TRIGGER tr_t2;
|
|
DROP TABLE t2, t1, t0;
|
|
|
|
Foreign Key tests disabled (bug 11472 - stored in trig_frkey2.test)
|
|
-------------------------------------------------------------------
|