From 384fb76a26834ab34f7f225ce59773332ae12859 Mon Sep 17 00:00:00 2001
From: Laura Hausmann <laura@hausmann.dev>
Date: Fri, 15 Dec 2023 23:56:00 +0100
Subject: [PATCH] [backend] Add a new index to the note table for faster
 generation of following query heuristics

---
 .../1702680809638-add-note-createdat-userid-idx.ts  | 13 +++++++++++++
 packages/backend/src/models/entities/note.ts        |  1 +
 2 files changed, 14 insertions(+)
 create mode 100644 packages/backend/src/migration/1702680809638-add-note-createdat-userid-idx.ts

diff --git a/packages/backend/src/migration/1702680809638-add-note-createdat-userid-idx.ts b/packages/backend/src/migration/1702680809638-add-note-createdat-userid-idx.ts
new file mode 100644
index 000000000..e38f9d1a4
--- /dev/null
+++ b/packages/backend/src/migration/1702680809638-add-note-createdat-userid-idx.ts
@@ -0,0 +1,13 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class AddNoteCreatedatUseridIdx1702680809638 implements MigrationInterface {
+    name = 'AddNoteCreatedatUseridIdx1702680809638'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`CREATE INDEX IF NOT EXISTS "IDX_note_createdAt_userId" ON "note" ("createdAt", "userId")`);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`DROP INDEX IF EXISTS "public"."IDX_note_createdAt_userId"`);
+    }
+}
diff --git a/packages/backend/src/models/entities/note.ts b/packages/backend/src/models/entities/note.ts
index 886e6538f..8062cac51 100644
--- a/packages/backend/src/models/entities/note.ts
+++ b/packages/backend/src/models/entities/note.ts
@@ -18,6 +18,7 @@ import { Channel } from "./channel.js";
 @Index("IDX_NOTE_VISIBLE_USER_IDS", { synchronize: false })
 @Index("IDX_note_userId_id", ["userId", "id"])
 @Index("IDX_note_id_userHost", ["id", "userHost"])
+@Index("IDX_note_createdAt_userId", ["createdAt", "userId"])
 export class Note {
 	@PrimaryColumn(id())
 	public id: string;