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-rw-r--r--synapse/storage/databases/main/roommember.py7
1 files changed, 3 insertions, 4 deletions
diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py
index ae9c201b87..1b8ec67f54 100644
--- a/synapse/storage/databases/main/roommember.py
+++ b/synapse/storage/databases/main/roommember.py
@@ -927,11 +927,10 @@ class RoomMemberWorkerStore(EventsWorkerStore, CacheInvalidationWorkerStore):
             raise Exception("Invalid host name")
 
         sql = """
-            SELECT state_key FROM current_state_events AS c
-            INNER JOIN room_memberships AS m USING (event_id)
-            WHERE m.membership = ?
+            SELECT state_key FROM current_state_events
+            WHERE membership = ?
                 AND type = 'm.room.member'
-                AND c.room_id = ?
+                AND room_id = ?
                 AND state_key LIKE ?
             LIMIT 1
         """