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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
73 lines
1.7 KiB
Text
73 lines
1.7 KiB
Text
connection node_2;
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connection node_1;
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY DEFAULT 0, f2 char(12));
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connection node_1;
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START TRANSACTION;
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INSERT INTO t1 (f2) VALUES ('a'), ('b');
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ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
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COMMIT;
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SELECT COUNT(*) AS expect_0 FROM t1;
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expect_0
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0
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connection node_2;
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SELECT COUNT(*) AS expect_0 FROM t1;
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expect_0
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0
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DROP TABLE t1;
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY DEFAULT 0, f2 char(12));
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connection node_1;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1, 'a');
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INSERT INTO t1 VALUES (2, 'b');
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INSERT INTO t1 (f2) VALUES ('c'), ('d');
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ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
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COMMIT;
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expect (1,'a'), (2, 'b')
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SELECT * FROM t1;
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f1 f2
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1 a
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2 b
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connection node_2;
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expect (1,'a'), (2, 'b')
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SELECT * FROM t1;
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f1 f2
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1 a
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2 b
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DROP TABLE t1;
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CREATE TABLE t1 (f1 INTEGER PRIMARY KEY DEFAULT 0, f2 char(12));
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connection node_1;
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INSERT INTO t1 (f2) VALUES ('a'),('b');
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ERROR 23000: Duplicate entry '0' for key 'PRIMARY'
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SELECT COUNT(*) AS expect_0 FROM t1;
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expect_0
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0
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connection node_2;
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SELECT COUNT(*) AS expect_0 FROM t1;
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expect_0
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0
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DROP TABLE t1;
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connection node_1;
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CREATE TABLE p(id int primary key, j int) ENGINE=InnoDB;
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CREATE TABLE c(id int primary key, fk1 int) ENGINE=InnoDB;
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ALTER TABLE c ADD FOREIGN KEY (fk1) references p(id);
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INSERT INTO p VALUES(1, 0);
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START TRANSACTION;
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INSERT INTO c VALUES (3,1);
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INSERT INTO c VALUES (1,1), (2,2);
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ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`c`, CONSTRAINT `1` FOREIGN KEY (`fk1`) REFERENCES `p` (`id`))
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COMMIT;
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SELECT * FROM p;
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id j
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1 0
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SELECT * FROM c;
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id fk1
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3 1
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connection node_2;
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SELECT * FROM p;
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id j
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1 0
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SELECT * FROM c;
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id fk1
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3 1
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DROP TABLE c;
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DROP TABLE p;
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