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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { isConcurrentIndexMigrationEnabled } from "./js/migration-config.js";
export class CompositeNoteIndex1745378064470 {
name = 'CompositeNoteIndex1745378064470';
transaction = isConcurrentIndexMigrationEnabled() ? false : undefined;
async up(queryRunner) {
const concurrently = isConcurrentIndexMigrationEnabled();
if (concurrently) {
const hasValidIndex = await queryRunner.query(`SELECT indisvalid FROM pg_index INNER JOIN pg_class ON pg_index.indexrelid = pg_class.oid WHERE pg_class.relname = 'IDX_724b311e6f883751f261ebe378'`);
if (hasValidIndex.length === 0 || hasValidIndex[0].indisvalid !== true) {
await queryRunner.query(`DROP INDEX IF EXISTS "IDX_724b311e6f883751f261ebe378"`);
await queryRunner.query(`CREATE INDEX CONCURRENTLY "IDX_724b311e6f883751f261ebe378" ON "note" ("userId", "id" DESC)`);
}
} else {
await queryRunner.query(`CREATE INDEX IF NOT EXISTS "IDX_724b311e6f883751f261ebe378" ON "note" ("userId", "id" DESC)`);
}
await queryRunner.query(`DROP INDEX IF EXISTS "IDX_5b87d9d19127bd5d92026017a7"`);
// Flush all cached Linear Scan Plans and redo statistics for composite index
// this is important for Postgres to learn that even in highly complex queries, using this index first can reduce the result set significantly
await queryRunner.query(`ANALYZE "user", "note"`);
}
async down(queryRunner) {
const mayConcurrently = isConcurrentIndexMigrationEnabled() ? 'CONCURRENTLY' : '';
await queryRunner.query(`DROP INDEX IF EXISTS "IDX_724b311e6f883751f261ebe378"`);
await queryRunner.query(`CREATE INDEX ${mayConcurrently} "IDX_5b87d9d19127bd5d92026017a7" ON "note" ("userId")`);
}
}
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