MatrixSynapse/synapse/storage/schema/main/delta/58/19instance_map.sql.postgres

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/* Copyright 2020 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.
*/
-- A unique and immutable mapping between instance name and an integer ID. This
-- lets us refer to instances via a small ID in e.g. stream tokens, without
-- having to encode the full name.
CREATE TABLE IF NOT EXISTS instance_map (
instance_id SERIAL PRIMARY KEY,
instance_name TEXT NOT NULL
);
CREATE UNIQUE INDEX IF NOT EXISTS instance_map_idx ON instance_map(instance_name);