Selecting row data and a scaler in SQL - mysql

Question

I have a job table, where each job has some metrics like cost, time taken, etc. I'd like to select information for a set of jobs, like the requestor and job action, and in addition to that row data, select some high-level metrics (min cost, max cost, min time taken, etc.).
The data changes frequently, so I'd like to get this information in a single select. Is it possible to do this? I'm not sure if this is conceptually possible because the DB would have to return row-level data along with aggregate data.
Right now I can get all the details and calculate the min/max, something like this:
select requestor, action, cost, time_taken from job;
But then I have to write code to find the min/max and this query has to download all the cost/time data when I am really only interested in the min/max. I really want to do something like
select (min(cost), max(cost), min(time_taken), max(time_taken)), (requestor, action) from job;
And get the aggregate data first, and then the row level data. Is this possible? (On a real server this is on MySQL, but for dev I locally use sqlite so it'd be nice if it worked there too, but not required).
The table looks something like this:
+----+-----------+--------+------+------------+
| id | requestor | action | cost | time_taken |
+----+-----------+--------+------+------------+
| 1 | 31233 | sync | 8 | 423.3 |
+----+-----------+--------+------+------------+
| 2 | 11229 | read | 1 | 1.3 |
+----+-----------+--------+------+------------+
| 3 | 1434 | edit | 5 | 152.8 |
+----+-----------+--------+------+------------+
| 4 | 101781 | sync | 12 | 712.1 |
+----+-----------+--------+------+------------+
I'd like to get back the stats:
min/max cost: 1/12
min/max time_taken: 1.3/712.1
and all the requestors and actions:
+-----------+--------+
| requestor | action |
+-----------+--------+
| 31233 | sync |
+-----------+--------+
| 11229 | read |
+-----------+--------+
| 1434 | edit |
+-----------+--------+
| 101781 | sync |
+-----------+--------+

Answer 1

Do you just want aggregation?
select requestor, action, min(cost), max(cost), min(time_taken), max(time_taken),
from job
group by requestor, action;