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![Thirunarayanan Balathandayuthapani](/assets/img/avatar_default.png)
mysql_prepare_alter_table(): Alter table should check whether foreign key exists when it expected to exists and report the error in early stage dict_foreign_parse_drop_constraints(): Don't throw error if the foreign key constraints doesn't exist when if exists is given in the statement.
35 lines
1.3 KiB
Text
35 lines
1.3 KiB
Text
--source include/have_innodb.inc
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--echo #
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--echo # MDEV-22230 : Unexpected ER_ERROR_ON_RENAME upon DROP
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--echo # non-existing FOREIGN KEY
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--echo #
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CREATE TABLE t1 (a INT) ENGINE=InnoDB;
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--error ER_CANT_DROP_FIELD_OR_KEY
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ALTER TABLE t1 DROP FOREIGN KEY x, ALGORITHM=COPY;
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--error ER_CANT_DROP_FIELD_OR_KEY
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ALTER TABLE t1 DROP FOREIGN KEY x, ALGORITHM=INPLACE;
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# Cleanup
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DROP TABLE t1;
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CREATE TABLE t1 (a INT, KEY(a)) ENGINE=InnoDB;
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CREATE TABLE t2 (a INT, FOREIGN KEY fk_id (a) REFERENCES t1(a))ENGINE=InnoDB;
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CREATE TABLE t3 (a INT, FOREIGN KEY fk_1 (a) REFERENCES t1(a))ENGINE=InnoDB;
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ALTER TABLE t3 DROP FOREIGN KEY IF EXISTS fk_id;
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DROP TABLE t3, t2;
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ALTER TABLE t1 MODIFY COLUMN a VARCHAR(2), DROP FOREIGN KEY IF EXISTS x;
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DROP TABLE t1;
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CREATE DATABASE best;
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CREATE TABLE best.t1(f1 INT, KEY(f1))ENGINE=InnoDB;
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CREATE TABLE best.t2(f1 INT, FOREIGN KEY foo(f1) REFERENCES t1(f1))ENGINE=InnoDB;
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CREATE TABLE t1(f1 INT, KEY(f1))ENGINE=InnoDB;
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CREATE TABLE t2(f1 INT, FOREIGN KEY foo(f1) REFERENCES t1(f1))ENGINE=InnoDB;
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ALTER TABLE t2 DROP FOREIGN KEY foo;
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--error ER_CANT_DROP_FIELD_OR_KEY
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ALTER TABLE t2 DROP FOREIGN KEY foo;
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ALTER TABLE t2 DROP FOREIGN KEY IF EXISTS foo;
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SHOW CREATE TABLE best.t2;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
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DROP TABLE best.t2, best.t1, t2, t1;
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DROP DATABASE best;
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