> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bytebase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Bytebase 0.4.1 - Aug 31, 2021

## 🚀 New Features

### SQL rollback ([detailed guide](https://docs.bytebase.com/use-bytebase/sql-review-interface/rollback-sql))

User can now create rollback issue from the original closed issue easily via the UI.

## 🎄 Experience Enhancement

* Taking backup in a single transaction to make the backup consistent.
* Add alter schema button on the database detail page.
* Add button to allow quickly applying SQL statements to other pipeline stages.
* Hide project quick action list for non-project member.
* Optimize database table list.

## 🎠 Community

* We have reworked our changelog and blog site to build directly on bytebase.com. This should offer a better browsing experience for our users.
* We published our first technical post on database schema design [Choose Primary Key - UUID or Auto Increment Integer?](https://www.bytebase.com/blog/choose-primary-key-uuid-or-auto-increment) Go check it out.

## ⚙️ Install and Upgrade

* [Fresh install](/get-started/self-host/deploy-with-docker)

* [Upgrade](/get-started/self-host/upgrade)

*Before upgrading: 1) Back up the [metadata](https://www.bytebase.com/docs/administration/back-up-restore-metadata/) — in-place downgrade is not supported. 2) Do not run multiple containers on the same data directory. 3) Terraform users: upgrade Bytebase server first, then apply the new Terraform config.*