This page describes Cloud SQL's database version support policies.
Database versions supported by Cloud SQL
The database engines supported by Cloud SQL include multiple versions. The versions can vary in capabilities and in the types of issues that arise. While performing an upgrade can impact your users, providing up-to-date database features and important patches is also critical. Cloud SQL keeps your instances up-to-date with patches and minor version updates automatically.
Major and minor versions supported by Cloud SQL
Cloud SQL supports the following database versions:
| Major version | Minor version | Support start date |
|---|---|---|
| SQL Server 2022 Standard | CU12 | June 26, 2023 |
| SQL Server 2022 Enterprise | CU12 | June 26, 2023 |
| SQL Server 2022 Express | CU12 | June 26, 2023 |
| SQL Server 2022 Web | CU12 | June 26, 2023 |
| SQL Server 2019 Standard (default) | CU26 | June 24, 2021 |
| SQL Server 2019 Enterprise | CU26 | June 24, 2021 |
| SQL Server 2019 Express | CU26 | June 24, 2021 |
| SQL Server 2019 Web | CU26 | June 24, 2021 |
| SQL Server 2017 Standard | CU31 | February 19, 2020 |
| SQL Server 2017 Enterprise | CU31 | February 19, 2020 |
| SQL Server 2017 Express | CU31 | February 19, 2020 |
| SQL Server 2017 Web | CU31 | February 19, 2020 |
Cloud SQL database version format
For SQL Server, the year provides the major version number and the minor version is the supported Cumulative Update (CU). For example, for SQL Server 2022 Enterprise CU11, 2022 Enterprise is the major version number and CU11 is the minor version number.
Minor version support
Cloud SQL supports new minor versions within three months of their general availability release by the database engine developer community. After Cloud SQL supports a new minor version, Cloud SQL provisions new instances on the new version automatically. During the next scheduled maintenance rollout, Cloud SQL upgrades existing instances to the new version.Cloud SQL determines the target minor version for each database engine. When the target minor version is different from the minor version for a Cloud SQL instance, Cloud SQL upgrades that version during the next maintenance cycle. You can control the day and time when maintenance restarts occur by setting a maintenance window for your instance.