Using field filter

If I am using same table two times while joining, and I want to use field filter on both tables then how do I do it.
Suppose I am using employee table, and I am joining it two times to find loading and unloading employee’s name with alias for first employee table as employee_1 and for second employee table as employee_2.
Now if I want to filter both and I have to mark them as field filter then these alias name won’t come in the dropdown. Only employee will come in the dropdown. How do I solve this??

Hi @rohan
Have a look at this example:
https://github.com/metabase/metabase/issues/4478#issuecomment-387513533
And then upvote this issue by clicking :+1: on the first post:
https://github.com/metabase/metabase/issues/3324