Add clobbered event_id

1 files changed, 2 insertions, 1 deletions

diff --git a/synapse/storage/schema/delta/42/current_state_delta.sql b/synapse/storage/schema/delta/42/current_state_delta.sql

index 1a55aa912b..bf124f3def 100644
--- a/synapse/storage/schema/delta/42/current_state_delta.sql
+++ b/synapse/storage/schema/delta/42/current_state_delta.sql
@@ -19,7 +19,8 @@ CREATE TABLE current_state_delta_stream (
     room_id TEXT NOT NULL,
     type TEXT NOT NULL,
     state_key TEXT NOT NULL,
-    event_id TEXT  -- Is null if the key was removed
+    event_id TEXT,  -- Is null if the key was removed
+    prev_event_id TEXT
 );
 
 CREATE INDEX current_state_delta_stream_idx ON current_state_delta_stream(stream_id);