-- Workflow resource role V2 prerequisite.
-- Resolve any rows returned by this query before applying the unique constraint.
select robot_id, device_id, count(*) as duplicate_count
from inspection_robot_device
group by robot_id, device_id
having count(*) > 1;

alter table inspection_robot_device
    drop index idx_robot_device_identity,
    add unique key uk_robot_device_identity (robot_id, device_id);