polardbxengine/mysql-test/suite/lizard/t/feature_flashback_query.test

--source include/have_debug.inc

CALL mtr.add_suppression("'innodb-scn-history-interval': unsigned value 0 adjusted to 1");

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);

delimiter //;

create procedure print_idx_image(in image_idx int)
begin
  set @time_stamp = (select image_time from foo_history where id = image_idx);
  select image_idx, foo.* from foo as of timestamp @time_stamp;
end //

create procedure print_all_images(in n_image int)
begin
  declare image_idx int default 1;
  while image_idx <= n_image DO
    call print_idx_image(image_idx);
    set image_idx = image_idx + 1;
  end while;
end //

create procedure update_foo_history()
begin
  do sleep(1.5);
  set @image_number = @image_number + 1;
  insert into foo_history (id) values (@image_number);
  do sleep(1.5);
end //

delimiter ;//

create table foo_history (id int, image_time datetime not null default now(),
                          primary key(id));

create table foo (id int, sec int, primary key(id), index sec (sec));

# stop purge
connection default;
begin;
select * from foo;

# test transaction_isolation = read-committed
connection con1;
set session transaction_isolation = 'READ-COMMITTED';

set @image_number = 0;

--source feature_flashback_query.inc

--echo # test transaction_isolation = REPEATABLE-READ
connection con1;
set session transaction_isolation = 'REPEATABLE-READ';

--source feature_flashback_query.inc

# TODO: test read_uncommiteed <24-09-20, zanye.zjy>

call print_all_images(@image_number);

connection default;
commit;

# test exception
create table bar (c1 int);

--source include/wait_innodb_all_purged.inc

# test flashback to a future moment
--error ER_SNAPSHOT_OUT_OF_RANGE
select * from bar as of timestamp date_add(now(), interval 2 hour);

insert into bar values (1);
sleep 3;
--source include/wait_innodb_all_purged.inc
--error ER_SNAPSHOT_TOO_OLD
select * from bar as of timestamp date_sub(now(), interval 2 second);

# stop purge
connection default;
begin;
select * from bar;

connection con1;
sleep 4;
set session debug = "+d, required_scn_purged_before_reset";
--error ER_SNAPSHOT_TOO_OLD
select * from bar as of timestamp date_sub(now(), interval 2 second);
set session debug = "-d, required_scn_purged_before_reset";

# can't build prev image because of missing history
update bar set c1 = 2;
set session debug = "+d, simulate_prev_image_purged_during_query";
--error ER_SNAPSHOT_TOO_OLD
select * from bar as of timestamp date_sub(now(), interval 2 second);
set session debug = "-d, simulate_prev_image_purged_during_query";

connection default;
commit;

--source include/wait_innodb_all_purged.inc

# test DDL
create table t1 (c1 int, c2 int, primary key(c1));
insert into t1 values (1, 100);
insert into t1 values (2, 200);

create table t2 like t1;
create table t3 like t1;
create table t4 like t1;
create table t5 like t1;
create table t6 like t1;
create table t7 like t1;
create table t8 like t1;
create table t9 like t1;
create table t10 like t1;

insert into t2 select * from t1;
insert into t3 select * from t1;
insert into t4 select * from t1;
insert into t5 select * from t1;
insert into t6 select * from t1;
insert into t7 select * from t1;
insert into t8 select * from t1;
insert into t9 select * from t1;
insert into t10 select * from t1;

# stop purge
connection con1;
begin;
select * from t1;

connection con2;
sleep 1.5;
set @past_timestamps = (select now());
sleep 1.5;
alter table t2 add c3 int default 100;
select * from t2 as of timestamp @past_timestamps;

alter table t3 add c3 int default 100, ALGORITHM = copy;
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t3 as of timestamp @past_timestamps;

drop table t4;
create table t4 as select * from t1;
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t3 as of timestamp @past_timestamps;

alter table t5 add c3 int after c1;
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t3 as of timestamp @past_timestamps;

alter table t6 add index sec(c2);
select * from t6 as of timestamp @past_timestamps;
select * from t6 as of timestamp @past_timestamps force index(sec);
select c2 from t6 as of timestamp @past_timestamps force index(sec);

alter table t7 row_format = compressed;
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t7 as of timestamp @past_timestamps;

alter table t8 change c2 c2_a bigint not null;
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t8 as of timestamp @past_timestamps;

alter table t9 rename column c2 to c3;
select * from t9 as of timestamp @past_timestamps;

alter table t10 drop primary key, add primary key(c2);
--error ER_AS_OF_TABLE_DEF_CHANGED
select * from t10 as of timestamp @past_timestamps;

connection con1;
commit;

connection default;

disconnect con1;
disconnect con2;
drop table foo;
drop table foo_history;
drop table bar;
drop table t1;
drop table t2;
drop table t3;
drop table t4;
drop table t5;
drop table t6;
drop table t7;
drop table t8;
drop table t9;
drop table t10;
drop procedure print_idx_image;
drop procedure print_all_images;
drop procedure update_foo_history;