Fix 500 error with Postgres when looking backwards with the MSC3030 `/timestamp_to_event` endpoint (#12024)

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/storage/databases/main/events_worker.py b/synapse/storage/databases/main/events_worker.py

index 712b8ce204..2a255d1031 100644
--- a/synapse/storage/databases/main/events_worker.py
+++ b/synapse/storage/databases/main/events_worker.py
@@ -1854,7 +1854,7 @@ class EventsWorkerStore(SQLBaseStore):
             forward_edge_query = """
                 SELECT 1 FROM event_edges
                 /* Check to make sure the event referencing our event in question is not rejected */
-                LEFT JOIN rejections ON event_edges.event_id == rejections.event_id
+                LEFT JOIN rejections ON event_edges.event_id = rejections.event_id
                 WHERE
                     event_edges.room_id = ?
                     AND event_edges.prev_event_id = ?