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Remove redundant `room_memberships` join to find participating servers in a room (#15732) 

Spawning from https://github.com/matrix-org/synapse/pull/15731
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Eric Eastwood 2023-06-07 11:45:16 -05:00 committed by GitHub
parent 5c24d7b9eb
commit 195b6a298d
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2 changed files with 3 additions and 3 deletions
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changelog.d/15732.doc Normal file
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@ -0,0 +1 @@
Simplify query to find participating servers in a room.

5
docs/usage/administration/admin_faq.md
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@ -27,9 +27,8 @@ What servers are currently participating in this room?
Run this sql query on your db:
```sql
SELECT DISTINCT split_part(state_key, ':', 2)
FROM current_state_events AS c
INNER JOIN room_memberships AS m USING (room_id, event_id)
WHERE room_id = '!cURbafjkfsMDVwdRDQ:matrix.org' AND membership = 'join';
FROM current_state_events
WHERE room_id = '!cURbafjkfsMDVwdRDQ:matrix.org' AND membership = 'join';
```
What users are registered on my server?