From 3a62cacfb0e8832ef01aadabb29452fa0308ebdc Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Tue, 1 May 2018 17:54:03 +0100
Subject: [PATCH] Use COALESCE rather than IFNULL

as this works on sqlite and postgres (postgres doesn't have IFNULL)
---
 synapse/storage/profile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/synapse/storage/profile.py b/synapse/storage/profile.py
index 12e2d44406..fcf3af7e5b 100644
--- a/synapse/storage/profile.py
+++ b/synapse/storage/profile.py
@@ -88,7 +88,7 @@ class ProfileWorkerStore(SQLBaseStore):
         def f(txn):
             sql = (
                 "UPDATE profiles SET batch = "
-                "(SELECT IFNULL(MAX(batch), -1) + 1 FROM profiles) "
+                "(SELECT COALESCE(MAX(batch), -1) + 1 FROM profiles) "
                 "WHERE user_id in ("
                 "    SELECT user_id FROM profiles WHERE batch is NULL limit ?"
                 ")"