diff --git a/synapse/storage/devices.py b/synapse/storage/devices.py
index 111bfb3d64..ac5239e50a 100644
--- a/synapse/storage/devices.py
+++ b/synapse/storage/devices.py
@@ -28,7 +28,12 @@ from synapse.logging.opentracing import (
whitelisted_homeserver,
)
from synapse.metrics.background_process_metrics import run_as_background_process
-from synapse.storage._base import Cache, SQLBaseStore, db_to_json
+from synapse.storage._base import (
+ Cache,
+ SQLBaseStore,
+ db_to_json,
+ make_in_list_sql_clause,
+)
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.util import batch_iter
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks, cachedList
@@ -448,11 +453,14 @@ class DeviceWorkerStore(SQLBaseStore):
sql = """
SELECT DISTINCT user_id FROM device_lists_stream
WHERE stream_id > ?
- AND user_id IN (%s)
+ AND
"""
for chunk in batch_iter(to_check, 100):
- txn.execute(sql % (",".join("?" for _ in chunk),), (from_key,) + chunk)
+ clause, args = make_in_list_sql_clause(
+ txn.database_engine, "user_id", chunk
+ )
+ txn.execute(sql + clause, (from_key,) + tuple(args))
changes.update(user_id for user_id, in txn)
return changes
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