> ## 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 2.9.1 - Oct 12, 2023

> Group changes into a changelist and apply them in one issue or export.

## 🚀 New Features

* Group changes into a changelist and apply them in one issue or export.
* [Batch query](/sql-editor/run-queries/#batch-mode) on multiple databases with selected labels in SQL Editor.
* Support integrating [external secret manager](/get-started/instance/#use-secret-manager) to store database credentials.
* Support Branching for PostgreSQL and TiDB.

## 🎄 Enhancements

* Support database labeling with multiple key-value pairs.
* SQL Editor supports reporting the exact line and column where the syntax error occurs.
* Edit Schema / Change Data button on the homepage supports selecting multiple databases from the same project.
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## 🎠 Community

* Thanks to [@CorrectRoadH](https://github.com/correctroadh) for PR chore: fix warning of compiler-sfc [#5864](https://github.com/bytebase/bytebase/pull/5864).
* Thanks to [@yagueto](https://github.com/yagueto) for PR feat(frontend): Adds a hover effect when hovering an announcement [#8553](https://github.com/bytebase/bytebase/pull/8553).

## 📰 Fresh off the press

* Bytebase Q3 2023 was a busy quarter, with new releases, popular posts, and product updates. We're excited to share a sneak peek at what we accomplished in [our retrospective](https://www.bytebase.com/blog/2023-q3-retrospect).

* Data Masking can helps organizations to protect sensitive data from being exposed to unauthorized users. Learn how with this tutorial: [Step-by-Step Guide to Data Masking](/tutorials/data-masking/).

## ⚙️ 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.*