--------------
drop table if exists a
--------------

Query OK, 0 rows affected, 1 warning

--------------
create table a (a char(20)) engine=infinidb
--------------

Query OK, 0 rows affected

--------------
insert into a values ('x')
--------------

Query OK, 1 row affected

--------------
select * from a
--------------

a
x
1 row in set

--------------
update a join a y on a.a = y.a set a.a='99'
--------------

Query OK, 1 row affected
Rows matched: 0  Changed: 0  Warnings: 0

--------------
select * from a
--------------

a
99
1 row in set

--------------
delete from a where a in (select x.a from (select a from a) x)
--------------

Query OK, 1 row affected

--------------
select * from a
--------------

Empty set

--------------
drop table a
--------------

Query OK, 0 rows affected

Bye