From 18d68bfee40078e4195adc43c93872d4a6facaf8 Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Fri, 20 May 2016 17:58:09 +0100
Subject: [PATCH] Handle empty events table

---
 synapse/storage/event_push_actions.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/synapse/storage/event_push_actions.py b/synapse/storage/event_push_actions.py
index 4425d4bce5..d630a846c9 100644
--- a/synapse/storage/event_push_actions.py
+++ b/synapse/storage/event_push_actions.py
@@ -293,6 +293,9 @@ class EventPushActionsStore(SQLBaseStore):
         txn.execute("SELECT MAX(stream_ordering) FROM events")
         max_stream_ordering = txn.fetchone()[0]
 
+        if max_stream_ordering is None:
+            return 0
+
         range_start = 0
         range_end = max_stream_ordering