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-rw-r--r--synapse/storage/util/id_generators.py7
1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/storage/util/id_generators.py b/synapse/storage/util/id_generators.py
index 89d1643f10..b39006315d 100644
--- a/synapse/storage/util/id_generators.py
+++ b/synapse/storage/util/id_generators.py
@@ -72,7 +72,10 @@ class StreamIdGenerator(object):
         with stream_id_gen.get_next_txn(txn) as stream_id:
             # ... persist event ...
     """
-    def __init__(self):
+    def __init__(self, table, column):
+        self.table = table
+        self.column = column
+
         self._lock = threading.Lock()
 
         self._current_max = None
@@ -126,7 +129,7 @@ class StreamIdGenerator(object):
 
     def _get_or_compute_current_max(self, txn):
         with self._lock:
-            txn.execute("SELECT MAX(stream_ordering) FROM events")
+            txn.execute("SELECT MAX(%s) FROM %s" % (self.column, self.table))
             rows = txn.fetchall()
             val, = rows[0]