--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;

CREATE TABLE t1(id INT PRIMARY KEY,
	        col1 INT UNSIGNED NOT NULL UNIQUE)ENGINE=InnoDB;
INSERT INTO t1 VALUES(1,1),(2,2),(3,3);
SET ALTER_ALGORITHM=INSTANT;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
ALTER TABLE t1 DROP COLUMN col1;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
ALTER TABLE t1 DROP COLUMN col1, ALGORITHM=NOCOPY;
ALTER TABLE t1 DROP COLUMN col1, ALGORITHM=DEFAULT;
ALTER TABLE t1 DROP PRIMARY KEY, ALGORITHM=DEFAULT;
DROP TABLE t1;
--disable_info