select @@system_versioning_alter_history;

create table t(
  a int
);
show create table t;
--error ER_VERS_NOT_VERSIONED
alter table t drop system versioning;

alter table t add system versioning;
show create table t;

--error ER_VERS_ALTER_NOT_ALLOWED
alter table t add column y int;
--error ER_VERS_ALTER_ENGINE_PROHIBITED
alter table t engine innodb;

alter table t drop system versioning;
show create table t;

set system_versioning_alter_history= keep;

--error ER_VERS_FIELD_WRONG_TYPE
alter table t
  add column trx_start bigint(20) unsigned generated always as row start,
  add column trx_end bigint(20) unsigned generated always as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;

--error ER_VERS_FIELD_WRONG_TYPE
alter table t
  add column trx_start timestamp generated always as row start,
  add column trx_end timestamp generated always as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;

--error ER_PARSE_ERROR
alter table t
  add column trx_start timestamp(6) not null generated always as row start,
  add column trx_end timestamp(6) not null generated always as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;

alter table t
  add column trx_start timestamp(6) generated always as row start,
  add column trx_end timestamp(6) generated always as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;
show create table t;

alter table t drop column trx_start, drop column trx_end;
alter table t drop system versioning;
show create table t;

alter table t add system versioning;
show create table t;

alter table t add column b int;
show create table t;

alter table t add column c int;
show create table t;

alter table t add column d int first;
show create table t;

alter table t add column e int after d;
show create table t;

alter table t drop column a;
show create table t;

create or replace table t (
  a int,
  sys_trx_start timestamp(6) generated always as row start,
  sys_trx_end timestamp(6) generated always as row end,
  period for system_time(sys_trx_start, sys_trx_end))
with system versioning;

select * from t for system_time all;
alter table t drop column sys_trx_start;
alter table t drop column sys_trx_end;
select * from t for system_time all;

--error ER_CANT_DROP_FIELD_OR_KEY
alter table t drop column sys_trx_start;
--error ER_CANT_DROP_FIELD_OR_KEY
alter table t drop column sys_trx_end;

create or replace table t (
  a int,
  sys_trx_start timestamp(6) generated always as row start,
  sys_trx_end timestamp(6) generated always as row end,
  period for system_time(sys_trx_start, sys_trx_end))
with system versioning;

select * from t for system_time all;
alter table t drop column sys_trx_start, drop column sys_trx_end;
select * from t for system_time all;

create or replace table t(
  a int
);
insert into t values(1);
alter table t add system versioning;
show create table t;
insert into t values(2);
select * from t for system_time all;
select * from t;

update t set a=3 where a=1;
select * from t;
select * from t for system_time all;
select sys_trx_start from t where a=3 into @tm;
alter table t add column b int;
select @tm=sys_trx_start from t where a=3;
show create table t;
select * from t;
select * from t for system_time all;

alter table t drop system versioning;
select * from t;
show create table t;

--error ER_VERS_NOT_VERSIONED
alter table t modify a int with system versioning;
--error ER_VERS_NOT_VERSIONED
alter table t modify a int without system versioning;

alter table t add system versioning;

alter table t modify a int without system versioning;
show create table t;

alter table t modify a int with system versioning;
show create table t;

# TODO: move TRX_ID cases to separate test
-- source suite/versioning/common.inc
create or replace table t(
  a int
) engine=innodb;

alter table t
  add column trx_start timestamp(6) as row start,
  add column trx_end timestamp(6) as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;

show create table t;
--echo # Issue #211: drop of system columns required before drop system versioning
alter table t drop column trx_start, drop column trx_end;
show create table t;

alter table t drop system versioning;

insert into t values(1);

call verify_vtq;
alter table t
  add column trx_start bigint(20) unsigned as row start,
  add column trx_end bigint(20) unsigned as row end,
  add period for system_time(trx_start, trx_end),
  add system versioning;
call verify_vtq;

show create table t;
## FIXME: #413 TRT is not updated on ADD SYSTEM VERSIONING
# alter table t drop column trx_start, drop column trx_end;

# call verify_vtq;
# alter table t drop system versioning, algorithm=copy;
# call verify_vtq;

create or replace table t(
  a int
) engine=innodb;

insert into t values (1);

## FIXME END

alter table t add system versioning, algorithm=copy;
call verify_vtq;

show create table t;

update t set a= 2;
select * from t for system_time all;

alter table t add column b int, algorithm=copy;
show create table t;
select * from t;
call verify_vtq;

alter table t drop column b, algorithm=copy;
show create table t;
select * from t for system_time all;
call verify_vtq;

alter table t drop system versioning, algorithm=inplace;
call verify_vtq;
## FIXME: #414 IB: inplace for VERS_TIMESTAMP versioning
if (0)
{
alter table t add system versioning, algorithm=inplace;
call verify_vtq;
show create table t;

update t set a= 1;
select * from t for system_time all;
call verify_vtq;

alter table t add column b int, algorithm=inplace;
show create table t;
select * from t;
call verify_vtq;

alter table t drop column b, algorithm=inplace;
show create table t;
select * from t for system_time all;
}
alter table t add system versioning;
## FIXME END

alter table t drop system versioning, algorithm=copy;
show create table t;
call verify_vtq;

# nullable autoinc test w/o versioning
create or replace table t (a int);
insert t values (1),(2),(3),(4);
alter table t add b int auto_increment null unique;
select * from t;
drop table t;

create or replace table t (a int) with system versioning engine=innodb;
insert into t values (1), (2), (3);
delete from t where a<3;
--error ER_DUP_ENTRY, ER_DUP_ENTRY
alter table t add b int not null unique;
--error ER_UNSUPPORTED_EXTENSION, ER_UNSUPPORTED_EXTENSION
alter table t add b int auto_increment unique;
alter table t add b int auto_increment null unique;
select * from t;
select * from t for system_time all;
insert into t values (4, 0);
select * from t for system_time all;

create or replace table t (a int) with system versioning;
insert into t values (1), (2), (3);
delete from t where a<3;
--error ER_DUP_ENTRY, ER_DUP_ENTRY
alter table t add b int not null unique;
--error ER_UNSUPPORTED_EXTENSION, ER_UNSUPPORTED_EXTENSION
alter table t add b int auto_increment unique;
alter table t add b int auto_increment null unique;
select * from t;
select * from t for system_time all;
insert into t values (4, 0);
select * from t for system_time all;

create or replace table t (
  a int,
  sys_trx_start bigint(20) unsigned generated always as row start,
  sys_trx_end bigint(20) unsigned generated always as row end,
  period for system_time(sys_trx_start, sys_trx_end)
) with system versioning engine innodb;
--error ER_VERS_ALTER_SYSTEM_FIELD
alter table t change column sys_trx_start asdf bigint unsigned;

create or replace table t (
  a int,
  sys_trx_start timestamp(6) generated always as row start,
  sys_trx_end timestamp(6) generated always as row end,
  period for system_time(sys_trx_start, sys_trx_end)
) with system versioning engine myisam;
--error ER_VERS_ALTER_SYSTEM_FIELD
alter table t change column sys_trx_start asdf timestamp(6);

create or replace table t (
  a int,
  sys_trx_start timestamp(6) generated always as row start,
  sys_trx_end timestamp(6) generated always as row end,
  period for system_time(sys_trx_start, sys_trx_end)
) with system versioning;
select * from t;

--error ER_VERS_SYS_FIELD_NOT_HIDDEN
alter table t drop system versioning;
alter table t drop column sys_trx_start;
select * from t;

--error ER_VERS_SYS_FIELD_NOT_HIDDEN
alter table t drop system versioning;
alter table t drop column sys_trx_end;
select * from t;

alter table t drop system versioning;
show create table t;


## These experimental options are now disabled

--error ER_WRONG_VALUE_FOR_VAR
set system_versioning_alter_history= SURVIVE;

--error ER_WRONG_VALUE_FOR_VAR
set system_versioning_alter_history= DROP;

if (0)
{
create or replace table t (a int) with system versioning engine innodb;
insert into t values (1);
update t set a = 2;
select * from t for system_time all;
alter table t add column b int;
select * from t for system_time all;

create or replace table t (a int) with system versioning engine myisam;
insert into t values (1);
update t set a = 2;
select * from t for system_time all;
alter table t add column b int;
select * from t for system_time all;

create or replace table non_empty (
  a int,
  sys_trx_start bigint(20) unsigned,
  sys_trx_end bigint(20) unsigned
) engine innodb;
insert into non_empty values (1, 100, 200);

--error ER_VERS_GENERATED_ALWAYS_NOT_EMPTY
alter table non_empty
  change column sys_trx_start sys_trx_start bigint(20) unsigned generated always as row start;
--error ER_VERS_GENERATED_ALWAYS_NOT_EMPTY
alter table non_empty
  change column sys_trx_end sys_trx_end bigint(20) unsigned generated always as row end;
drop table non_empty;

create or replace table t (a int primary key) with system versioning;
insert into t values (1);
update t set a=2;
alter table t drop primary key, add primary key (a), drop system versioning;
select * from t;
--replace_result InnoDB INNODB_OR_MYISAM MyISAM INNODB_OR_MYISAM
show create table t;

create or replace table t (a int primary key) with system versioning;
insert into t values (1);
update t set a=2;
alter table t drop system versioning;
select * from t;
--replace_result InnoDB INNODB_OR_MYISAM MyISAM INNODB_OR_MYISAM
show create table t;


call verify_vtq;
}

create or replace table t (a int) with system versioning;
--error ER_VERS_ALREADY_VERSIONED
alter table t add system versioning;
--error ER_VERS_ALREADY_VERSIONED
alter table t add system versioning, drop system versioning;

set @@system_versioning_alter_history=keep;
create or replace table t(x int, y int) with system versioning engine=innodb;
alter table t modify y int without system versioning;
insert into t values(1, 1);
update t set y=2;

drop database test;
create database test;