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# MDEV-6794 XtraDB no longer using UNIQUE as clustered index when PK missing
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--source include/have_innodb.inc

create table t1 (c1 int not null, c2 int, unique index(c1), index (c2)) engine=innodb;
insert into t1 (c1, c2) select 1, round(rand()*100);
insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
select count(*) from t1;
--query_vertical explain select * from t1 where c2 = 1 order by c1
drop table t1;