Jag tror att kopplingen som uttrycks i SELECT-satsen exekveras även för de 100 000 raderna som du inte inkluderar i den slutliga datamängden.
Vad sägs om det här:
SELECT s2.user_id,
(SELECT address_id FROM address a WHERE a.user_id = s2.user_id ORDER BY address_id OFFSET 0 LIMIT 1) AS a_id
FROM (select *
from subscribers s
ORDER BY s.user_id
OFFSET 100000 LIMIT 200) s2
Om det misslyckas, prova ett vanligt tabelluttryck:
With s2 as (
select *
from subscribers s
ORDER BY s.user_id
OFFSET 100000 LIMIT 200)
SELECT s2.user_id,
(SELECT address_id FROM address a WHERE a.user_id = s2.user_id ORDER BY address_id OFFSET 0 LIMIT 1) AS a_id
FROM s2