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Comment. Remove superfluous order by

This commit is contained in:
Erik Johnston 2016-01-29 15:39:17 +00:00
parent b5dbced938
commit 8da95b6f1b
1 changed files with 3 additions and 1 deletions
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4
synapse/storage/__init__.py
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@ -139,11 +139,13 @@ class DataStore(RoomMemberStore, RoomStore,
super(DataStore, self).__init__(hs) super(DataStore, self).__init__(hs)
def _get_cache_dict(self, db_conn, table, entity_column, stream_column, max_value): def _get_cache_dict(self, db_conn, table, entity_column, stream_column, max_value):
# Fetch a mapping of room_id -> max stream position for "recent" rooms.
# It doesn't really matter how many we get, the StreamChangeCache will
# do the right thing to ensure it respects the max size of cache.
sql = ( sql = (
"SELECT %(entity)s, MAX(%(stream)s) FROM %(table)s" "SELECT %(entity)s, MAX(%(stream)s) FROM %(table)s"
" WHERE %(stream)s > ? - 100000" " WHERE %(stream)s > ? - 100000"
" GROUP BY %(entity)s" " GROUP BY %(entity)s"
" ORDER BY MAX(%(stream)s) DESC"
) % { ) % {
"table": table, "table": table,
"entity": entity_column, "entity": entity_column,