Ensure pushers are deleted for deactivated accounts (#9285)

synapse/storage/databases/main/schema/delta/59/08delete_pushers_for_deactivated_accounts.sql

@@ -0,0 +1,21 @@
+/* Copyright 2021 The Matrix.org Foundation C.I.C
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+-- We may not have deleted all pushers for deactivated accounts. Do so now.
+--
+-- Note: We don't bother updating the `deleted_pushers` table as it's just use
+-- to stop pushers on workers, and that will happen when they get next restarted.
+DELETE FROM pushers WHERE user_name IN (SELECT name FROM users WHERE deactivated = 1);