drop table if exists t1;
CREATE TABLE t1 (id INT primary key, c1 INT, c2 int, c3 int) ENGINE=xengine;
insert into t1 values(1,1,1,1),(5,5,5,5),(9,9,9,9);
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 drop column c1, add column c4 int default 100 ,ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Establish connection con1 (user=root)
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,6,6),(7,7,7,7);
select * from t1;
id	c1	c2	c3
1	1	1	1
5	5	5	5
6	6	6	6
7	7	7	7
9	9	9	9
update t1 set c2=100 where id > 6;
select * from t1;
id	c1	c2	c3
1	1	1	1
5	5	5	5
6	6	6	6
7	7	100	7
9	9	100	9
update t1 set c1=99 where id > 6;
select * from t1;
id	c1	c2	c3
1	1	1	1
5	5	5	5
6	6	6	6
7	99	100	7
9	99	100	9
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
5	5	5	5
6	6	6	6
7	99	100	7
9	99	100	9
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c2` int(11) DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  `c4` int(11) DEFAULT '100',
  PRIMARY KEY (`id`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
select * from t1;
id	c2	c3	c4
5	5	5	100
6	6	6	100
7	100	7	100
9	100	9	100
drop table t1;
drop table if exists t1;
create table t1(id int primary key, c1 int, c2 varchar(100), c3 int) engine=xengine;
insert into t1 values(1,11,'abc',111);
insert into t1 values(2,12,'abc',222);
insert into t1 values(3,13,'abc',333);
alter table t1 add index idx_c1(c1),algorithm=inplace,lock=default;
alter table t1 add index idx_c2(c2),algorithm=inplace,lock=default;
alter table t1 add index idx_c3(c3),algorithm=inplace,lock=default;
alter table t1 add index idx_c1_c2(c1,c2),algorithm=inplace,lock=default;
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 drop column c1, add column c4 int default 100 ,ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,'6666',6),(7,7,'777777',7);
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	777777	7
update t1 set c2='aaaa' where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	aaaa	7
update t1 set c1=99 where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
Warnings:
Warning	1831	Duplicate index 'idx_c1_c2' defined on the table 'test.t1'. This is deprecated and will be disallowed in a future release.
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c2` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  `c4` int(11) DEFAULT '100',
  PRIMARY KEY (`id`),
  KEY `idx_c2` (`c2`),
  KEY `idx_c3` (`c3`),
  KEY `idx_c1_c2` (`c2`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
select * from t1;
id	c2	c3	c4
2	abc	222	100
3	abc	333	100
6	6666	6	100
7	aaaa	7	100
drop table t1;
drop table if exists t1;
create table t1(id int primary key, c1 int, c2 varchar(100), c3 int) engine=xengine;
insert into t1 values(1,11,'abc',111);
insert into t1 values(2,12,'abc',222);
insert into t1 values(3,13,'abc',333);
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 add column c4 int default 100, add index idx_c4(c4) ,ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,'6666',6),(7,7,'777777',7);
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	777777	7
update t1 set c2='aaaa' where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	aaaa	7
update t1 set c1=99 where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
select * from t1;
id	c1	c2	c3	c4
2	12	abc	222	100
3	13	abc	333	100
6	6	6666	6	100
7	99	aaaa	7	100
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c1` int(11) DEFAULT NULL,
  `c2` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  `c4` int(11) DEFAULT '100',
  PRIMARY KEY (`id`),
  KEY `idx_c4` (`c4`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table t1;
"test modify pk"
drop table if exists t1;
create table t1(id int not null primary key, c1 int not null, c2 varchar(100), c3 int) engine=xengine;
insert into t1 values(1,11,'abc',111);
insert into t1 values(2,12,'abc',222);
insert into t1 values(3,13,'abc',333);
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 drop primary key, add primary key(c1), ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,'6666',6),(7,7,'777777',7);
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	777777	7
update t1 set c2='aaaa' where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	aaaa	7
update t1 set c1=99 where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	aaaa	7
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
select * from t1;
id	c1	c2	c3
6	6	6666	6
2	12	abc	222
3	13	abc	333
7	99	aaaa	7
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c1` int(11) NOT NULL,
  `c2` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  PRIMARY KEY (`c1`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table t1;
"test modify column from nul to not-null"
drop table if exists t1;
create table t1(id int primary key, c1 int, c2 varchar(100), c3 int) engine=xengine;
insert into t1 values(1,11,'abc',111);
insert into t1 values(2,12,'abc',222);
insert into t1 values(3,13,'abc',333);
set @save_sql_mode = @@sql_mode;
set sql_mode = "STRICT_TRANS_TABLES";
Warnings:
Warning	3135	'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 modify column c1 int not null ,ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,'6666',6),(7,7,'777777',7);
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	777777	7
update t1 set c1=null where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	NULL	777777	7
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	NULL	777777	7
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
ERROR 22004: Invalid use of NULL value
set sql_mode = @save_sql_mode;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	NULL	777777	7
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c1` int(11) DEFAULT NULL,
  `c2` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table t1;
"test modify column from nul to not-null"
drop table if exists t1;
create table t1(id int primary key, c1 int, c2 varchar(100), c3 int) engine=xengine;
insert into t1 values(1,11,'abc',111);
insert into t1 values(2,12,'abc',222);
insert into t1 values(3,13,'abc',333);
set @save_sql_mode = @@sql_mode;
set sql_mode = "STRICT_TRANS_TABLES";
Warnings:
Warning	3135	'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
SET DEBUG_SYNC= 'xengine.inplace_copy_ddl_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';
alter table t1 modify column c2 varchar(100) not null ,ALGORITHM  = INPLACE, LOCK=DEFAULT;
# Switch to connection con1
SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6,'6666',6),(7,7,'777777',7);
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	777777	7
update t1 set c2=null where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	7	NULL	7
update t1 set c1=99 where id > 6;
select * from t1;
id	c1	c2	c3
1	11	abc	111
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	NULL	7
delete from t1 where id=1;
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	NULL	7
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';
# Switch to connection default
ERROR 22004: Invalid use of NULL value
set sql_mode = @save_sql_mode;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
select * from t1;
id	c1	c2	c3
2	12	abc	222
3	13	abc	333
6	6	6666	6
7	99	NULL	7
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) NOT NULL,
  `c1` int(11) DEFAULT NULL,
  `c2` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
  `c3` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table t1;