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Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/storage/roommember.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index bfb834ccca..59ea7277fe 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -678,6 +678,11 @@ class RoomMemberWorkerStore(EventsWorkerStore): # to see if any have subsequently been updated. This is done so that # we can use a partial index on `forgotten = 1` on the assumption # that few users will actually forget many rooms. + # + # Note that a room is considered "forgotten" if *all* membership + # events for that user and room have the forgotten field set (as + # when a user forgets a room we update all rows for that user and + # room, not just the current one). sql = """ SELECT room_id, ( SELECT count(*) FROM room_memberships |