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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
105 lines
4 KiB
Text
105 lines
4 KiB
Text
#
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# TRUNCATE TABLE
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#
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# Truncating is disallowed for parent tables unless such table
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# participates in self-referencing foreign keys only.
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#
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CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=INNODB;
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CREATE TABLE t2 (fk INT NOT NULL, FOREIGN KEY (fk) REFERENCES t1 (pk)) ENGINE=INNODB;
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TRUNCATE TABLE t1;
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ERROR 42000: Cannot truncate a table referenced in a foreign key constraint (`test`.`t2`, CONSTRAINT `1` FOREIGN KEY (`fk`) REFERENCES `test`.`t1` (`pk`))
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# Truncation of child should succeed.
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TRUNCATE TABLE t2;
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DROP TABLE t2;
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DROP TABLE t1;
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CREATE TABLE t1 (pk INT PRIMARY KEY, fk INT,
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FOREIGN KEY (fk) REFERENCES t1 (pk)) ENGINE=INNODB;
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# Truncation of self-referencing table should succeed.
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TRUNCATE TABLE t1;
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DROP TABLE t1;
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#
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# Also, truncating such tables is allowed if foreign key
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# checks are disabled.
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#
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SET @old_foreign_key_checks = @@SESSION.foreign_key_checks;
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CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=INNODB;
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CREATE TABLE t2 (fk INT NOT NULL, FOREIGN KEY (fk) REFERENCES t1 (pk)) ENGINE=INNODB;
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CREATE TABLE t3 (pk INT PRIMARY KEY, fk INT,
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FOREIGN KEY (fk) REFERENCES t1 (pk)) ENGINE=INNODB;
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SET @@SESSION.foreign_key_checks = 0;
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TRUNCATE TABLE t1;
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TRUNCATE TABLE t2;
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TRUNCATE TABLE t3;
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SET @@SESSION.foreign_key_checks = 1;
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TRUNCATE TABLE t1;
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ERROR 42000: Cannot truncate a table referenced in a foreign key constraint (`test`.`t2`, CONSTRAINT `1` FOREIGN KEY (`fk`) REFERENCES `test`.`t1` (`pk`))
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TRUNCATE TABLE t2;
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TRUNCATE TABLE t3;
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LOCK TABLES t1 WRITE;
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SET @@SESSION.foreign_key_checks = 0;
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TRUNCATE TABLE t1;
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SET @@SESSION.foreign_key_checks = 1;
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TRUNCATE TABLE t1;
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ERROR 42000: Cannot truncate a table referenced in a foreign key constraint (`test`.`t2`, CONSTRAINT `1` FOREIGN KEY (`fk`) REFERENCES `test`.`t1` (`pk`))
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UNLOCK TABLES;
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DROP TABLE t3,t2,t1;
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SET @@SESSION.foreign_key_checks = @old_foreign_key_checks;
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#
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# Test that TRUNCATE resets auto-increment.
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#
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CREATE TABLE t1 (a INT PRIMARY KEY NOT NULL AUTO_INCREMENT,
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b INT, c INT, d INT, e INT, f INT, g INT, h INT, i INT, j INT, k INT,
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l INT, m INT, n INT, o INT, p INT, q INT, r INT, s INT, t INT, u INT,
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KEY(b),KEY(c),KEY(d),KEY(e),KEY(f),KEY(g),KEY(h),KEY(i),KEY(j),KEY(k),
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KEY(l),KEY(m),KEY(n),KEY(o),KEY(p),KEY(q),KEY(r),KEY(s),KEY(t),KEY(u),
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KEY(c,b),KEY(d,b),KEY(e,b),KEY(f,b),KEY(g,b),KEY(h,b),KEY(i,b),KEY(j,b),
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KEY(k,b),KEY(l,b),KEY(m,b),KEY(n,b),KEY(o,b),KEY(p,b),KEY(q,b),KEY(r,b),
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KEY(s,b),KEY(t,b),KEY(u,b),
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KEY(d,c),KEY(e,c),KEY(f,c),KEY(g,c),KEY(h,c),KEY(i,c),KEY(j,c),
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KEY(k,c),KEY(l,c),KEY(m,c),KEY(n,c),KEY(o,c),KEY(p,c),KEY(q,c),KEY(r,c),
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KEY(s,c),KEY(t,c),KEY(u,c),
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KEY(e,d),KEY(f,d),KEY(g,d),KEY(h,d),KEY(i,d),KEY(j,d)
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) ENGINE=InnoDB;
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INSERT INTO t1 () VALUES (), ();
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SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't1';
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AUTO_INCREMENT
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3
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SELECT a FROM t1 ORDER BY a;
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a
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1
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2
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TRUNCATE TABLE t1;
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SELECT AUTO_INCREMENT FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 't1';
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AUTO_INCREMENT
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1
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INSERT INTO t1 () VALUES (), ();
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SELECT a FROM t1 ORDER BY a;
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a
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1
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2
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DROP TABLE t1;
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call mtr.add_suppression('InnoDB: in RENAME TABLE table `test`.`t3`');
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SET FOREIGN_KEY_CHECKS= OFF;
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CREATE TABLE t1 (f2 INT, f4 INT, KEY(f2), FOREIGN KEY (f4) REFERENCES t3 (f4)) ENGINE=InnoDB;
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SET FOREIGN_KEY_CHECKS= ON;
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CREATE TABLE t2 (f2 INT, FOREIGN KEY(f2) REFERENCES t1 (f2)) ENGINE=InnoDB;
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CREATE TABLE t3 (a INT) ENGINE=InnoDB;
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ERROR HY000: Can't create table `test`.`t3` (errno: 150 "Foreign key constraint is incorrectly formed")
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ALTER TABLE t1 RENAME TO t3;
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ALTER TABLE t3 FORCE;
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TRUNCATE TABLE t3;
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ERROR 42000: Cannot truncate a table referenced in a foreign key constraint (`test`.`t2`, CONSTRAINT `1` FOREIGN KEY (`f2`) REFERENCES `test`.`t3` (`f2`))
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DROP TABLE t2, t3;
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#
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# MDEV-24861 Assertion `trx->rsegs.m_redo.rseg' failed
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# in innodb_prepare_commit_versioned
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#
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CREATE TABLE t1 (id INT PRIMARY KEY, f TEXT UNIQUE,
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s BIGINT UNSIGNED AS ROW START, e BIGINT UNSIGNED AS ROW END,
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PERIOD FOR SYSTEM_TIME(s,e))
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ENGINE=InnoDB WITH SYSTEM VERSIONING;
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CREATE TABLE t2 (id INT PRIMARY KEY) ENGINE=InnoDB;
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ALTER TABLE t1 FORCE;
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TRUNCATE TABLE t2;
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DROP TABLE t1, t2;
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# End of 10.6 tests
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