From 99e3d4506232f13e311afe1a5bd942b721b2cabe Mon Sep 17 00:00:00 2001
From: Hazelnoot <acomputerdog@gmail.com>
Date: Tue, 3 Jun 2025 19:05:24 -0400
Subject: [PATCH] create IDX_note_for_timelines

---
 ...991828473-create-IDX_note_for_timelines.js | 19 +++++++++++++++++++
 packages/backend/src/models/Note.ts           |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 packages/backend/migration/1748991828473-create-IDX_note_for_timelines.js

diff --git a/packages/backend/migration/1748991828473-create-IDX_note_for_timelines.js b/packages/backend/migration/1748991828473-create-IDX_note_for_timelines.js
new file mode 100644
index 0000000000..2ea7fe95d2
--- /dev/null
+++ b/packages/backend/migration/1748991828473-create-IDX_note_for_timelines.js
@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class CreateIDXNoteForTimelines1748991828473 {
+	async up(queryRunner) {
+		await queryRunner.query(`
+			create index "IDX_note_for_timelines"
+			on "note" ("id" desc, "channelId", "visibility", "userHost")
+			include ("userId", "userHost", "replyId", "replyUserId", "replyUserHost", "renoteId", "renoteUserId", "renoteUserHost")
+			NULLS NOT DISTINCT`);
+		await queryRunner.query(`comment on index "IDX_note_for_timelines" is 'Covering index for timeline queries'`);
+	}
+
+	async down(queryRunner) {
+		await queryRunner.query(`DROP INDEX "IDX_note_for_timelines"`);
+	}
+}
diff --git a/packages/backend/src/models/Note.ts b/packages/backend/src/models/Note.ts
index b9a6f576dc..90b874f29a 100644
--- a/packages/backend/src/models/Note.ts
+++ b/packages/backend/src/models/Note.ts
@@ -13,6 +13,7 @@ import type { MiDriveFile } from './DriveFile.js';
 
 @Index('IDX_724b311e6f883751f261ebe378', ['userId', 'id'])
 @Index('IDX_note_userHost_id', { synchronize: false }) // (userHost, id desc)
+@Index('IDX_note_for_timelines', { synchronize: false }) // (id desc, channelId, visibility, userHost)
 @Entity('note')
 export class MiNote {
 	@PrimaryColumn(id())