plsql: Getting another field values along with the aggregation values in a grouping statement

Question

I am working on a time attendance system. I have the employees\' transactions stored in the following table:

Answer 1

You could try to use analytical(or windowing functions)

select *
from 
(select id, employee_id, action_date,type,
       max(action_date) over (partition by employee_id) max_action_date,
       min(action_date) over (partition by employee_id) min_action_date
from transaction)
where action_date in (max_action_date, min_action_date)