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20201230103504_update_log_varchar.js
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20201230103504_update_log_varchar.js
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/*
* Copyright 2020 The Backstage Authors
*
* 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.
*/
// @ts-check
/**
* @param {import('knex').Knex} knex
*/
exports.up = async function up(knex) {
if (knex.client.config.client !== 'sqlite3') {
// We actually just want to widen columns, but can't do that while a
// view is dependent on them - so we just reconstruct it exactly as it was
await knex.schema
.raw('DROP VIEW location_update_log_latest;')
.alterTable('location_update_log', table => {
table.text('message').alter({ alterType: true });
table.text('entity_name').nullable().alter({ alterType: true });
}).raw(`
CREATE VIEW location_update_log_latest AS
SELECT t1.* FROM location_update_log t1
JOIN
(
SELECT location_id, MAX(id) AS MAXID
FROM location_update_log
GROUP BY location_id
) t2
ON t1.location_id = t2.location_id
AND t1.id = t2.MAXID
GROUP BY t1.location_id, t1.id
ORDER BY created_at DESC;
`);
}
};
/**
* @param {import('knex').Knex} knex
*/
exports.down = async function down(knex) {
if (knex.client.config.client !== 'sqlite3') {
await knex.schema
.raw('DROP VIEW location_update_log_latest;')
.alterTable('location_update_log', table => {
table.string('message').alter({ alterType: true });
table.string('entity_name').nullable().alter({ alterType: true });
}).raw(`
CREATE VIEW location_update_log_latest AS
SELECT t1.* FROM location_update_log t1
JOIN
(
SELECT location_id, MAX(id) AS MAXID
FROM location_update_log
GROUP BY location_id
) t2
ON t1.location_id = t2.location_id
AND t1.id = t2.MAXID
GROUP BY t1.location_id, t1.id
ORDER BY created_at DESC;
`);
}
};