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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
75 lines
4.1 KiB
Text
75 lines
4.1 KiB
Text
create table t1(f1 int primary key) engine=innodb;
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# Create statement with FK on base column of stored column
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create table t2(f1 int not null, f2 int as (f1) stored,
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foreign key(f1) references t1(f1) on update cascade)engine=innodb;
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ERROR HY000: Function or expression 'f1' cannot be used in the GENERATED ALWAYS AS clause of `f2`
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create table t2(f1 int not null, f2 int as (f1) virtual, f3 int as (f2) stored,
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foreign key(f1) references t1(f1) on update cascade)engine=innodb;
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ERROR HY000: Function or expression 'f2' cannot be used in the GENERATED ALWAYS AS clause of `f3`
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# adding new stored column during alter table copy operation.
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create table t2(f1 int not null, f2 int as (f1) virtual,
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foreign key(f1) references t1(f1) on update cascade)engine=innodb;
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alter table t2 add column f3 int as (f1) stored, add column f4 int as (f1) virtual;
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ERROR HY000: Function or expression 'f1' cannot be used in the GENERATED ALWAYS AS clause of `f3`
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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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`f1` int(11) NOT NULL,
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`f2` int(11) GENERATED ALWAYS AS (`f1`) VIRTUAL,
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KEY `f1` (`f1`),
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CONSTRAINT `1` FOREIGN KEY (`f1`) REFERENCES `t1` (`f1`) ON UPDATE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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drop table t2;
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# adding foreign key constraint for base columns during alter copy.
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create table t2(f1 int not null, f2 int as (f1) stored) engine=innodb;
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alter table t2 add foreign key(f1) references t1(f1) on update cascade, algorithm=copy;
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ERROR HY000: Function or expression 'f1' cannot be used in the GENERATED ALWAYS AS clause of `f2`
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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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`f1` int(11) NOT NULL,
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`f2` int(11) GENERATED ALWAYS AS (`f1`) STORED
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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drop table t2;
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# adding foreign key constraint for base columns during online alter.
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create table t2(f1 int not null, f2 int as (f1) stored) engine=innodb;
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set foreign_key_checks = 0;
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alter table t2 add foreign key(f1) references t1(f1) on update cascade, algorithm=inplace;
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ERROR HY000: Function or expression 'f1' cannot be used in the GENERATED ALWAYS AS clause of `f2`
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drop table t2;
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# adding stored column via online alter.
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create table t2(f1 int not null,
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foreign key(f1) references t1(f1) on update cascade)engine=innodb;
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alter table t2 add column f2 int as (f1) stored, algorithm=inplace;
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ERROR HY000: Function or expression 'f1' cannot be used in the GENERATED ALWAYS AS clause of `f2`
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drop table t2, t1;
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#
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# BUG#26731689 FK ON TABLE WITH GENERATED COLS: ASSERTION POS < N_DEF
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#
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CREATE TABLE s (a INT, b INT GENERATED ALWAYS AS (0) STORED, c INT,
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d INT GENERATED ALWAYS AS (0) VIRTUAL, e INT) ENGINE=innodb;
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CREATE TABLE t (a INT) ENGINE=innodb;
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (e) REFERENCES t(a) ON UPDATE SET null;
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ERROR HY000: Failed to add the foreign key constraint. Missing index for constraint 'c' in the referenced table 't'
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ALTER TABLE t ADD PRIMARY KEY(a);
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (e) REFERENCES t(a) ON UPDATE SET null;
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DROP TABLE s,t;
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CREATE TABLE s (a INT GENERATED ALWAYS AS (0) VIRTUAL,
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b INT GENERATED ALWAYS AS (0) STORED, c INT) ENGINE=innodb;
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CREATE TABLE t (a INT) ENGINE=innodb;
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (c) REFERENCES t(a) ON UPDATE SET null;
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ERROR HY000: Failed to add the foreign key constraint. Missing index for constraint 'c' in the referenced table 't'
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ALTER TABLE t ADD PRIMARY KEY(a);
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (c) REFERENCES t(a) ON UPDATE SET null;
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DROP TABLE s,t;
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CREATE TABLE s (a INT, b INT GENERATED ALWAYS AS (0) STORED) ENGINE=innodb;
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CREATE TABLE t (a INT PRIMARY KEY) ENGINE=innodb;
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (a) REFERENCES t(a) ON UPDATE SET null;
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DROP TABLE s,t;
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CREATE TABLE s (a INT, b INT) ENGINE=innodb;
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CREATE TABLE t (a INT) ENGINE=innodb;
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (a) REFERENCES t(a) ON UPDATE SET null;
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ERROR HY000: Failed to add the foreign key constraint. Missing index for constraint 'c' in the referenced table 't'
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ALTER TABLE t ADD PRIMARY KEY(a);
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ALTER TABLE s ADD CONSTRAINT c FOREIGN KEY (a) REFERENCES t(a) ON UPDATE SET null;
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DROP TABLE s,t;
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