set session debug_dbug="+d,optimizer_innodb_icp";
drop table if exists `t1`;
Warnings:
Note	1051	Unknown table 'test.t1'
create table `t1` (`c` bigint, key(`c`),`a` int)engine=innodb;
insert into `t1` values(2,2);
delete `t1` from `t1` `a`, `t1` where `a`.`a`=`t1`.`c` ;
drop table `t1`;
