Sliding Sync: Speed up getting receipts for initial rooms (#17592)

Let's only pull out the events we care about. Note that the index isn't
necessary here, as postgres is happy to scan the set of rooms for the
events.

1 files changed, 15 insertions, 0 deletions

diff --git a/synapse/storage/schema/main/delta/86/02_receipts_event_id_index.sql b/synapse/storage/schema/main/delta/86/02_receipts_event_id_index.sql
new file mode 100644

index 0000000000..e6db91e5b5
--- /dev/null
+++ b/synapse/storage/schema/main/delta/86/02_receipts_event_id_index.sql
@@ -0,0 +1,15 @@
+--
+-- This file is licensed under the Affero General Public License (AGPL) version 3.
+--
+-- Copyright (C) 2024 New Vector, Ltd
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as
+-- published by the Free Software Foundation, either version 3 of the
+-- License, or (at your option) any later version.
+--
+-- See the GNU Affero General Public License for more details:
+-- <https://www.gnu.org/licenses/agpl-3.0.html>.
+
+INSERT INTO background_updates (ordering, update_name, progress_json) VALUES
+    (8602, 'receipts_room_id_event_id_index', '{}');