Krzysztof Kotlarek 7426764af4
FIX: Optimize move to dismiss_new_topics migration (#12041)
This migration is quite heavy because of join to all potential topics which should be `dismissed` for each user. To make it a little bit more efficient I did two things:
- move conditions to join so it should use fewer rows
- do that in batches - 1000 users at the time
2021-02-11 16:05:38 -05:00
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