--source include/have_innodb.inc
--source alter_sql_mode.inc
call mtr.add_suppression("InnoDB: In ALTER TABLE .* has or is referenced in foreign key constraints which are not compatible with the new table definition.");

let $combination=`select regexp_replace('$MTR_COMBINATIONS', 'innodb,\|,innodb', '')`;

let $copy_algo=`select ((strcmp(substring_index('$combination', ",", 1), "COPY") = 0) or (strcmp(substring_index('$combination', ",", -1), "COPY") = 0))`;

let $inplace_algo=`select ((strcmp(substring_index('$combination', ",", 1), "INPLACE") = 0) or (strcmp(substring_index('$combination', ",", -1), "INPLACE") = 0))`;

let $algorithm=COPY;
if ($inplace_algo)
{
  let $algorithm=INPLACE;
}
let $sql_mode = `SELECT @@SQL_MODE`;
let $error_code = 0;
if ($sql_mode == "STRICT_TRANS_TABLES") {
 let $error_code = ER_FK_COLUMN_NOT_NULL;
}

--echo # modify child column NOT NULL on UPDATE CASCADE..parent column NULL
CREATE TABLE t1(f1 INT, f2 INT, PRIMARY KEY(f1), KEY(f2))ENGINE=InnoDB;
CREATE TABLE t2(f1 INT, FOREIGN KEY(f1) REFERENCES t1(f2) ON UPDATE CASCADE)ENGINE=InnoDB;
replace_result ,ALGORITHM=COPY '' ,ALGORITHM=INPLACE '';
--error $error_code
eval ALTER TABLE t2 MODIFY COLUMN f1 INT NOT NULL,ALGORITHM=$algorithm;
INSERT INTO t1 VALUES(1, 1);
INSERT INTO t2 VALUES(1);

let $dml_error_code = ER_ROW_IS_REFERENCED_2;
if ($sql_mode == "STRICT_TRANS_TABLES")
{
  let $dml_error_code = 0;
}

--error $dml_error_code
UPDATE t1 SET f2= NULL;
DELETE FROM t2;
SELECT * FROM t1;
UPDATE t1 SET f2 = NULL;
SELECT * FROM t1;
DROP TABLE t2, t1;

let $error_code= ER_ERROR_ON_RENAME;
if ($algorithm == "INPLACE")
{
  let $error_code= ER_FK_COLUMN_NOT_NULL;
}

if ($sql_mode == "STRICT_TRANS_TABLES")
{
  let $error_code = ER_FK_COLUMN_NOT_NULL;
}

# Modifying referenced column from NULL to NOT NULL fails when foreign
# clause is ON UPDATE SET NULL or ON DELETE SET NULL irrespective
# of SQL_MODE variable. This is the behaviour even before MDEV-34392

--echo # modify child column NOT NULL ON UPDATE SET NULL
CREATE TABLE t1(f1 INT, f2 INT, PRIMARY KEY(f1), KEY(f2))ENGINE=InnoDB;
CREATE TABLE t2(f1 INT, f2 INT, FOREIGN KEY(f1) REFERENCES t1(f1) ON UPDATE SET NULL)ENGINE=InnoDB;
replace_result ,ALGORITHM=COPY '' ,ALGORITHM=INPLACE '';
--replace_regex  /Error on rename of '.*' to '.*'/Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME'/
--error $error_code
eval ALTER TABLE t2 MODIFY COLUMN f1 INT NOT NULL,ALGORITHM=$algorithm;
INSERT INTO t1 VALUES(1, 1);
INSERT INTO t2 VALUES(1, 1);
UPDATE t1 SET f1= 2;
SELECT * FROM t2;
DROP TABLE t2, t1;

--echo # modify child column NOT NULL ON DELETE SET NULL
CREATE TABLE t1(f1 INT, f2 INT, PRIMARY KEY(f1), KEY(f2))ENGINE=InnoDB;
CREATE TABLE t2(f1 INT, f2 INT, FOREIGN KEY (f2) REFERENCES t1(f2) ON DELETE SET NULL)ENGINE=InnoDB;
replace_result ,ALGORITHM=COPY '' ,ALGORITHM=INPLACE '';
--replace_regex  /Error on rename of '.*' to '.*'/Error on rename of 'OLD_FILE_NAME' to 'NEW_FILE_NAME'/
--error $error_code
eval ALTER TABLE t2 MODIFY COLUMN f2 INT NOT NULL,ALGORITHM=$algorithm;
DROP TABLE t2, t1;

if ($sql_mode == "STRICT_TRANS_TABLES")
{
  let $dml_error_code = ER_BAD_NULL_ERROR;
}

let $error_code= 0;
if ($sql_mode == "STRICT_TRANS_TABLES")
{
  let $error_code = ER_FK_COLUMN_CANNOT_CHANGE_CHILD;
}

--echo # modify parent column NULL ON UPDATE CASCADE child column NOT NULL
CREATE TABLE `t#1`(f1 INT, f2 INT NOT NULL, PRIMARY KEY(f1), KEY(f2))ENGINE=InnoDB;
CREATE TABLE `t#2`(f1 INT NOT NULL,
                   FOREIGN KEY(f1) REFERENCES `t#1`(f2)
                   ON UPDATE CASCADE)ENGINE=InnoDB;
replace_result ,ALGORITHM=COPY '' ,ALGORITHM=INPLACE '';
--error $error_code
eval ALTER TABLE `t#1` MODIFY COLUMN f2 INT,ALGORITHM=$algorithm;
INSERT INTO `t#1` VALUES(1, 1);
INSERT INTO `t#2` VALUES(1);
--error $dml_error_code
UPDATE `t#1` SET f2= NULL;
DELETE FROM `t#2`;
SELECT * FROM `t#1`;
DROP TABLE `t#2`, `t#1`;

let $error_code= 0;
if ($sql_mode == "STRICT_TRANS_TABLES")
{
  let $error_code = ER_CANT_CREATE_TABLE;
}

CREATE TABLE t1(f1 INT NOT NULL AUTO_INCREMENT,
                f2 INT DEFAULT NULL,
		PRIMARY KEY(f1),
		FOREIGN KEY(f2) REFERENCES t1(f1))ENGINE=InnoDB;
--error $error_code
CREATE TABLE t2 (f1 INT NOT NULL,
		 f2 INT NOT NULL,
		 f3 INT DEFAULT NULL,
		 PRIMARY KEY(f1, f2),
		 FOREIGN KEY(f2, f3) REFERENCES t1(f2, f1)
		 ON UPDATE CASCADE)ENGINE=InnoDB;
--disable_warnings
DROP TABLE IF EXISTS t2;
--enable_warnings
DROP TABLE IF EXISTS t1;