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synapse/synapse/storage/schema/state/delta/83/05_replica_identities_in_state_db.sql.postgres

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/* Copyright 2023 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.
*/
-- Annotate some tables in Postgres with a REPLICA IDENTITY.
-- Any table that doesn't have a primary key should be annotated explicitly with
-- a REPLICA IDENTITY so that logical replication can be used.
-- If this is not done, then UPDATE and DELETE statements on those tables
-- will fail if logical replication is in use.
-- See also: 82/04_replica_identities.sql.postgres on the main database
-- Where possible, re-use unique indices already defined on tables as a replica
-- identity.
ALTER TABLE state_group_edges REPLICA IDENTITY USING INDEX state_group_edges_unique_idx;
-- Where there are no unique indices, use the entire rows as replica identities.
ALTER TABLE state_groups_state REPLICA IDENTITY FULL;