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MDEV-16288 ALTER TABLE…ALGORITHM=DEFAULT does not override alter_algorithm

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- Added the test case to prove that alter_algorithm variable doesn't
affect when ALTER statement during PREPARE PHASE or CREATE PROCEDURE.
Only when execution/call happens, alter uses the alter_algorithm
variable when user does not mention algorithm explicitly
This commit is contained in:
Thirunarayanan Balathandayuthapani
2020-04-30 19:52:49 +05:30
parent 644d9f38b9
commit f98017bb6d
2 changed files with 103 additions and 0 deletions
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47
mysql-test/suite/innodb/t/alter_algorithm2.test Normal file
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--source include/have_innodb.inc
CREATE TABLE t1 (a INT)ENGINE=InnoDB;
INSERT INTO t1 VALUES(1);
# alter_algorithm variable doesn't affect when ALTER stmt
# during PREPARE PHASE or CREATE PROCEDURE
# Only when execution/call happens, alter uses the alter_algorithm
# variable when user does not mention algorithm explicitly.
--enable_info
SET alter_algorithm='INPLACE';
PREPARE stmt FROM 'ALTER TABLE t1 ADD KEY idx(a)';
PREPARE stmt1 FROM 'ALTER TABLE t1 DROP KEY idx';
DELIMITER |;
CREATE OR REPLACE PROCEDURE p1()
BEGIN
ALTER TABLE t1 ADD KEY idx2(a);
END|
CREATE OR REPLACE PROCEDURE p2()
BEGIN
ALTER TABLE t1 DROP KEY idx2;
END|
DELIMITER ;|
SET alter_algorithm='COPY';
EXECUTE stmt;
EXECUTE stmt1;
call p1();
call p2();
SET alter_algorithm='NOCOPY';
EXECUTE stmt;
EXECUTE stmt1;
call p1();
call p2();
SET alter_algorithm='INSTANT';
--error ER_ALTER_OPERATION_NOT_SUPPORTED_REASON
EXECUTE stmt;
--error ER_ALTER_OPERATION_NOT_SUPPORTED_REASON
call p1();
DROP TABLE t1;
DROP PROCEDURE p1;
DROP PROCEDURE p2;
--disable_info