Which, of course, is also this relatively simple select:
```
select r.ritm,
task,
t.ritm,
max(ud) as ud
from r
left join t
on r.ritm == t.ritm
group by r.ritm, t.ritm
;
```
Which, of course, is also this relatively simple select:
```
select r.ritm,
task,
t.ritm,
max(ud) as ud
from r
left join t
on r.ritm == t.ritm
group by r.ritm, t.ritm
;
```