-- source include/have_innodb.inc
-- source suite/innodb/include/have_innodb_plugin.inc

create table foo (x bigint) engine=innodb;

insert into foo () values (),(),(),(),(),(),(),(),(),(),(),();
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;
insert into foo select * from foo;

alter table foo add unique index `idx` (x);

drop table foo;