MatrixSynapse/synapse/storage/schema/delta/30/state_stream.sql

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/* Copyright 2016 OpenMarket 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.
*/
/* We used to create a table called current_state_resets, but this is no
* longer used and is removed in delta 54.
*/
/* The outlier events that have aquired a state group typically through
* backfill. This is tracked separately to the events table, as assigning a
* state group change the position of the existing event in the stream
* ordering.
* However since a stream_ordering is assigned in persist_event for the
* (event, state) pair, we can use that stream_ordering to identify when
* the new state was assigned for the event.
*/
CREATE TABLE IF NOT EXISTS ex_outlier_stream(
event_stream_ordering BIGINT PRIMARY KEY NOT NULL,
event_id TEXT NOT NULL,
state_group BIGINT NOT NULL
);