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d88e0ec080
We're going to need this so that we can figure out how to handle redactions when fetching events from the database.
36 lines
1.7 KiB
Plaintext
36 lines
1.7 KiB
Plaintext
/* Copyright 2020 The Matrix.org Foundation C.I.C.
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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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-- when we first added the room_version column, it was populated via a background
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-- update. We now need it to be populated before synapse starts, so we populate
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-- any remaining rows with a NULL room version now. For servers which have completed
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-- the background update, this will be pretty quick.
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-- the following query will set room_version to NULL if no create event is found for
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-- the room in current_state_events, and will set it to '1' if a create event with no
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-- room_version is found.
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UPDATE rooms SET room_version=(
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SELECT COALESCE(json::json->'content'->>'room_version','1')
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FROM current_state_events cse INNER JOIN event_json ej USING (event_id)
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WHERE cse.room_id=rooms.room_id AND cse.type='m.room.create' AND cse.state_key=''
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) WHERE rooms.room_version IS NULL;
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-- we still allow the background update to complete: it has the useful side-effect of
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-- populating `rooms` with any missing rooms (based on the current_state_events table).
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-- see also rooms_version_column_2.sql.sqlite which has a copy of the above query, using
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-- sqlite syntax for the json extraction.
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