Update only the greatest row - Sequential Based Update - mysql

Question

I want to write a query to find the LOWEST SEQUENCE for status = REQUEST_PENDING then update it after a certain condition.
For example:
person_name
status
sequence
a
request_progressed
1
b
request_pending
2
c
request_pending
3
If the person named A is done, it's status would change from "request_progressed" to "request_done"; then the next person B will have his status changed to "request_progressed" while the person C stays the same because its sequence is the 3rd.
So I just need to know how do I change the person B status by finding the lowest sequence which has "request_pending" status and THERE IS (SUPPOSED TO BE) ONLY ONE "request_progressed" on the table that is why when it is updated to "request_done" the next "request_pending" need to be updated to "request_progressed".
I tried the following:
update table
set status = 'request_progressed'
where status = 'pending' AND sequence = min(sequence)

Answer 1

In MySQL - you can specify order by and limit in update queries:
update t
set status = 'request_progressed'
where status = 'request_pending'
order by sequence
limit 1
In PostgreSQL - you still need order by and limit but they can only be used inside a subquery:
update t
set status = 'request_progressed'
where (status, sequence) in (
select status, sequence
from t
where status = 'request_pending'
order by sequence
offset 0 rows fetch first 1 row only
)