chore: update name in one shot (#7567)

packages/backend/server/src/data/migrations/1721299086340-refresh-unnamed-user.ts

@@ -1,25 +1,13 @@
-import { PrismaClient, User } from '@prisma/client';
+import { PrismaClient } from '@prisma/client';
 
 export class RefreshUnnamedUser1721299086340 {
   // do the migration
   static async up(db: PrismaClient) {
-    await db.$transaction(async tx => {
-      // only find users with unnamed names
-      const users = await db.$queryRaw<
-        User[]
-      >`SELECT * FROM users WHERE name = 'Unnamed';`;
-
-      await Promise.all(
-        users.map(({ id, email }) =>
-          tx.user.update({
-            where: { id },
-            data: {
-              name: email.split('@')[0],
-            },
-          })
-        )
-      );
-    });
+    await db.$executeRaw`
+      UPDATE users
+      SET name = split_part(email, '@', 1)
+      WHERE name = 'Unnamed' AND position('@' in email) > 0;
+    `;
   }
 
   // revert the migration