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Remove unused indices
This includes removing both unused indices and indices that are subsets of other indices.
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synapse/storage/schema/delta/32/remove_indices.sql
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42
synapse/storage/schema/delta/32/remove_indices.sql
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/* Copyright 2016 OpenMarket Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-- The following indices are redundant, other indices are equivalent or
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-- supersets
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DROP INDEX IF EXISTS events_room_id;
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DROP INDEX IF EXISTS events_order;
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DROP INDEX IF EXISTS events_topological_ordering;
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DROP INDEX IF EXISTS events_stream_ordering;
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DROP INDEX IF EXISTS state_groups_id;
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DROP INDEX IF EXISTS event_to_state_groups_id;
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DROP INDEX IF EXISTS event_push_actions_room_id_event_id_user_id_profile_tag;
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DROP INDEX IF EXISTS event_push_actions_room_id_user_id;
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DROP INDEX IF EXISTS event_destinations_id;
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DROP INDEX IF EXISTS st_extrem_id;
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DROP INDEX IF EXISTS event_content_hashes_id;
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DROP INDEX IF EXISTS event_signatures_id;
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DROP INDEX IF EXISTS event_edge_hashes_id;
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DROP INDEX IF EXISTS redactions_event_id;
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DROP INDEX IF EXISTS remote_media_cache_thumbnails_media_id;
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DROP INDEX IF EXISTS room_hosts_room_id;
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DROP INDEX IF EXISTS event_search_ev_ridx;
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-- The following indices were unused
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DROP INDEX IF EXISTS evauth_edges_auth_id;
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DROP INDEX IF EXISTS topics_room_id;
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DROP INDEX IF EXISTS presence_stream_state;
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