Add background update for current_state_events.membership column

1 files changed, 3 insertions, 0 deletions

diff --git a/synapse/storage/schema/delta/56/current_state_events_membership.sql b/synapse/storage/schema/delta/56/current_state_events_membership.sql

index 5c754651cb..ec7ad5bae2 100644
--- a/synapse/storage/schema/delta/56/current_state_events_membership.sql
+++ b/synapse/storage/schema/delta/56/current_state_events_membership.sql
@@ -17,3 +17,6 @@
 -- room_memberships, which can be surprisingly costly (we do such queries
 -- very frequently).
 ALTER TABLE current_state_events ADD membership TEXT;
+
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('current_state_events_membership', '{}');