> ## 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 1.9.1 - Dec 15, 2022

> - Support data access control. - Schema Editor for MySQL. - Check Mark as done to skip a task. - Mark issue as Needs Attention.

## 🚀 New Features

* Support [data access control](/security/database-permission/overview).
* [Schema Editor](/change-database/schema-editor) for MySQL.
* Check "Mark as done" to skip a task.
* The issue creator can mark an issue as "Needs attention", which is highlighted in the assignee's view.

## 🎄 Enhancements

* Terraform Bytebase Provider
  * Manage [instance details](https://registry.terraform.io/providers/bytebase/bytebase/latest/docs/resources/instance).
  * Manage [environment details](https://registry.terraform.io/providers/bytebase/bytebase/latest/docs/resources/environment).
* [Data masking](/security/data-masking/overview) for MySQL databases now supports all query types.
* [Schema Sync for PostgreSQL](/change-database/synchronize-schema) supports Enum Type, Function, Trigger, and Extension.
* [Tenant database label](/change-database/batch-change) supports arbitrary values without pre-definition.
* A fresh look for SQL Editor's [Admin mode](/sql-editor/admin-mode) tabs.
* Speed up issue creation and execution.

## 📰 Fresh off the press

* We asked ChatGPT how to choose the best database for a new project, and [here's the reply](https://www.bytebase.com/blog/how-to-choose-database-by-chatgpt).
* The [pros and cons](https://www.bytebase.com/blog/integrate-sql-review-into-github) of 3 different ways to integrate SQL Review into your GitHub repo.
* Database Schema Change Series
  * [What is Database Change Management (DCM)?](https://www.bytebase.com/blog/what-is-database-change-management)
  * [How to Handle Database Schema Change?](https://www.bytebase.com/blog/how-to-handle-database-schema-change)

## ⚙️ 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.*