From e3a373f0023e99bdd2ff9bd37ded3571904b07cb Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Wed, 25 Apr 2018 14:58:43 +0100 Subject: [PATCH] remove duplicates from groups tables and rename inconsistently named indexes. Based on https://github.com/matrix-org/synapse/pull/3128 - thanks @vurpo\! --- .../schema/delta/48/group_unique_indexes.sql | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 synapse/storage/schema/delta/48/group_unique_indexes.sql diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.sql b/synapse/storage/schema/delta/48/group_unique_indexes.sql new file mode 100644 index 000000000..9ea7a8f2e --- /dev/null +++ b/synapse/storage/schema/delta/48/group_unique_indexes.sql @@ -0,0 +1,34 @@ +/* Copyright 2018 New Vector Ltd + * + * 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. + */ + +-- remove duplicates from group_users table +DELETE FROM group_users WHERE ctid NOT IN ( + SELECT min(ctid) FROM group_users GROUP BY group_id, user_id +); +DROP INDEX groups_users_g_idx; +CREATE UNIQUE INDEX group_users_g_idx ON group_users(group_id, user_id); + +-- remove duplicates from group_invites table +DELETE FROM group_invites WHERE ctid NOT IN ( + SELECT min(ctid) FROM group_invites GROUP BY group_id, user_id +); +DROP INDEX groups_invites_g_idx; +CREATE UNIQUE INDEX group_invites_g_idx ON group_invites(group_id, user_id); + +-- rename other indexes to actually match their table names... +ALTER INDEX groups_users_u_idx RENAME TO group_users_u_idx; +ALTER INDEX groups_invites_u_idx RENAME TO group_invites_u_idx; +ALTER INDEX groups_rooms_g_idx RENAME TO group_rooms_g_idx; +ALTER INDEX groups_rooms_r_idx RENAME TO group_rooms_r_idx;