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-rw-r--r--synapse/storage/room.py2
-rw-r--r--synapse/storage/search.py2
2 files changed, 2 insertions, 2 deletions
diff --git a/synapse/storage/room.py b/synapse/storage/room.py
index 740c036975..c0c01bcfbe 100644
--- a/synapse/storage/room.py
+++ b/synapse/storage/room.py
@@ -595,7 +595,7 @@ class RoomStore(RoomWorkerStore, SearchStore):
         while next_token:
             sql = """
                 SELECT stream_ordering, json FROM events
-                JOIN event_json USING (event_id)
+                JOIN event_json USING (room_id, event_id)
                 WHERE room_id = ?
                     AND stream_ordering < ?
                     AND contains_url = ? AND outlier = ?
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index 426cbe6e1a..6ba3e59889 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -77,7 +77,7 @@ class SearchStore(BackgroundUpdateStore):
             sql = (
                 "SELECT stream_ordering, event_id, room_id, type, json, "
                 " origin_server_ts FROM events"
-                " JOIN event_json USING (event_id)"
+                " JOIN event_json USING (room_id, event_id)"
                 " WHERE ? <= stream_ordering AND stream_ordering < ?"
                 " AND (%s)"
                 " ORDER BY stream_ordering DESC"