Add support for postgres instead of mysql. Change sql accourdingly. blob + varbinary -> bytea. No support for UNSIGNED or CREATE INDEX IF NOT EXISTS.

synapse/storage/events.py

@@ -188,12 +188,12 @@ class EventsStore(SQLBaseStore):
                 )
 
                 sql = (
-                    "UPDATE events SET outlier = 0"
+                    "UPDATE events SET outlier = ?"
                     " WHERE event_id = ?"
                 )
                 txn.execute(
                     sql,
-                    (event.event_id,)
+                    (False, event.event_id,)
                 )
             return