--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

--source include/count_sessions.inc

--echo #
--echo # MDEV-26294 Duplicate entries in unique index not detected when
--echo #	changing collation with INPLACE algorithm
--echo #

# Detect the duplicate entry after collation change of column

SET NAMES utf8;
CREATE TABLE t1 (
  id INT PRIMARY KEY,
  msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_swedish_ci UNIQUE
) ENGINE=INNODB;
INSERT INTO t1 VALUES (1, 'aaa');
INSERT INTO t1 VALUES (2, 'ååå');
--error ER_DUP_ENTRY
ALTER TABLE t1 MODIFY msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci, ALGORITHM=inplace;
DROP TABLE t1;

# PageBulk insert shouldn't fail like records are not in ascending order

CREATE TABLE t1 (
  id INT PRIMARY KEY,
  msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_bin,
  id_2 INT not null,
  unique index(msg, id_2)
) ENGINE=INNODB;

INSERT INTO t1 VALUES (1, 'aaa', 2);
INSERT INTO t1 VALUES (2, 'AAA', 3);

ALTER TABLE t1 MODIFY msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci, ALGORITHM=inplace;

DROP TABLE t1;

# Detect the duplicate entry from concurrent DML

CREATE TABLE t1 (
  id INT PRIMARY KEY,
  msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_bin,
  unique index(msg)
) ENGINE=INNODB;

INSERT INTO t1 VALUES (1, 'aaa');
INSERT INTO t1 VALUES (2, 'bbb');
INSERT INTO t1 VALUES (3, 'ccc');

SET DEBUG_SYNC = 'RESET';
SET DEBUG_SYNC = 'row_log_apply_before SIGNAL before_apply WAIT_FOR go_ahead';
--send
ALTER TABLE t1 MODIFY msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci, ALGORITHM=NOCOPY;

connect (con1,localhost,root,,);
connection con1;

SET DEBUG_SYNC = 'now WAIT_FOR before_apply';
INSERT INTO t1 VALUES (4, 'AAA');
UPDATE t1 set msg = "ddd" where id = 2;
DELETE FROM t1 WHERE id= 3;
SET DEBUG_SYNC = 'now SIGNAL go_ahead';

connection default;

--error ER_DUP_ENTRY
reap;

SET DEBUG_SYNC = 'RESET';
SELECT * FROM t1;
DROP TABLE t1;

# InnoDB should store the changed collation column into
# change_col_info in index when rollback of alter happens

CREATE TABLE t1 (
  id INT PRIMARY KEY,
  f1 INT NOT NULL,
  f2 INT NOT NULL,
  f3 INT NOT NULL,
  msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_bin,
  msg_1 VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_bin,
  unique index(f1, msg, f2, msg_1, f3),
  unique index(f1, msg_1, f2, msg, f3),
  unique index(f1, msg, f3, msg_1, f2),
  unique index(f1, msg_1, f3, msg, f2),
  unique index(f2, msg_1, f1, msg, f3),
  unique index(f2, msg, f3, msg_1, f1),
  unique index(f3, f2, msg, msg_1, f1),
  unique index(f3, msg, msg_1, f1, f2)
) ENGINE=INNODB;

INSERT INTO t1 VALUES (1, 1, 1, 1, 'aaa', 'aaa');
SET DEBUG_DBUG="+d,create_index_fail";
SET DEBUG_SYNC="innodb_inplace_alter_table_enter SIGNAL con1_go WAIT_FOR alter_signal";
--send
ALTER TABLE t1 MODIFY msg VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci, MODIFY msg_1 VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci, ALGORITHM=NOCOPY;

connection con1;
SET DEBUG_SYNC="now WAIT_FOR con1_go";
BEGIN;
SELECT * FROM t1;
SET DEBUG_SYNC="now SIGNAL alter_signal";
connection default;
--error ER_DUP_ENTRY
reap;
CHECK TABLE t1;
connection con1;
rollback;
INSERT INTO t1 VALUES(2, 2, 2, 2, 'bbb', 'bbb');
disconnect con1;
connection default;
SET DEBUG_SYNC=reset;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES(3, 3, 3, 3, 'ccc', 'ccc');
DROP TABLE t1;

# Inplace Collation change is not supported for virtual column
# and stored column

CREATE TABLE t1(id INT PRIMARY KEY, msg VARCHAR(100),
		msg_1 VARCHAR(100) AS (msg) VIRTUAL,
		msg_2 VARCHAR(100) AS (msg) STORED,
		UNIQUE(msg), UNIQUE(msg_1),
		UNIQUE(msg_2))ENGINE=InnoDB;
--error ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN
ALTER TABLE t1 MODIFY msg_1 VARCHAR(100) CHARACTER SET utf8
		COLLATE utf8_unicode_ci, ALGORITHM=inplace;
--error ER_ALTER_OPERATION_NOT_SUPPORTED_REASON
ALTER TABLE t1 MODIFY msg_2 VARCHAR(100) CHARACTER SET utf8
                COLLATE utf8_unicode_ci, ALGORITHM=inplace;
DROP TABLE t1;

--echo #
--echo # MDEV-29314 Assertion `n_fields > n_cols' failed
--echo #	in dict_index_t::init_change_cols
--echo #
CREATE TABLE t (a VARCHAR(16) COLLATE utf8_bin,
		FULLTEXT (a)) ENGINE=InnoDB COLLATE utf8_unicode_520_ci;
ALTER TABLE t MODIFY COLUMN a VARCHAR(512);
SHOW CREATE TABLE t;
DROP TABLE t;

--echo #
--echo # MDEV-31416 ASAN errors in dict_v_col_t::detach upon
--echo #         adding key to virtual column
--echo #
CREATE TABLE t (a INT) ENGINE=InnoDB WITH SYSTEM VERSIONING;
SET SYSTEM_VERSIONING_ALTER_HISTORY= KEEP;
ALTER TABLE t ADD COLUMN v VARCHAR(128) GENERATED ALWAYS AS (CRC32('MariaDB'));
ALTER TABLE t ADD INDEX (v);
DROP TABLE t;
--source include/wait_until_count_sessions.inc