SET @save_stats_persistent = @@GLOBAL.innodb_stats_persistent;
SET GLOBAL innodb_stats_persistent = 0;
connect  purge_control,localhost,root;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
create table t1(f1 int not null, f2 blob not null, f3 blob not null,
vchar char(2) as (substr(f3,2,2)) virtual,
primary key(f1, f3(5)), index(vchar))engine=innodb;
insert into t1(f1,f2,f3) values(1, repeat('a',8000), repeat('b', 9000));
update t1 set f1=5 where f1=1;
delete from t1 where f1=5;
connection purge_control;
COMMIT;
InnoDB		0 transactions not purged
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
drop table t1;
create table t1(f1 int not null, f2 blob not null, f3 blob not null,
vchar char(2) as (substr(f3,2,2)) virtual,
primary key(f1, f3(5)), index(vchar, f3(2)))engine=innodb;
insert into t1(f1,f2,f3) values(1, repeat('a',8000), repeat('b', 9000));
update t1 set f1=5 where f1=1;
delete from t1 where f1=5;
connection purge_control;
COMMIT;
InnoDB		0 transactions not purged
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
drop table t1;
create table t1(f1 int not null, f2 blob not null, f3 blob not null,
vchar blob as (f3) virtual,
primary key(f1, f3(5)), index(vchar(3)))engine=innodb;
insert into t1(f1,f2,f3) values(1, repeat('a',8000), repeat('b', 9000));
update t1 set f1=5 where f1=1;
delete from t1 where f1=5;
connection purge_control;
COMMIT;
InnoDB		0 transactions not purged
disconnect purge_control;
connection default;
drop table t1;
SET GLOBAL innodb_stats_persistent = @save_stats_persistent;