## Appendix E. Release Notes

The release notes contain the significant changes in each Postgres Pro Standard release, with major features and migration issues listed at the top. The release notes do not contain changes that affect only a few users or changes that are internal and therefore not user-visible. For example, the optimizer is improved in almost every release, but the improvements are usually observed by users as simply faster queries.

## E.1. Postgres Pro Standard 10.10.2

Release Date: 2019-10-09

### E.1.1. Overview

This release is based on Postgres Pro Standard 10.10.1 and provides several improvements:

- Added support for CentOS 8.

- The expression comparison function has been reworked to fix bugs and improve support in the future.

### E.1.2. Migration to Version 10.10.2

If you are upgrading from a Postgres Pro Standard version based on the same PostgreSQL major release, it is enough to install the new version into your current installation directory.

Since pg_probackup delivery model changed in Postgres Pro Standard 10.7.1, when upgrading from a lower version on ALT Linux and Debian-based systems, run `apt dist-upgrade` (or `apt-get dist-upgrade`) to ensure that all new dependencies are handled correctly. On Windows, you have to run a separate pg_probackup installer to complete the upgrade.

When upgrading from version 10.3.2 or lower, you must call the `REINDEX` command for indexes that used `mchar` or `mvarchar` types. Besides, if you have been using `pg_repack` on Debian-based systems, you have to reinstall its package manually when upgrading to this version since its package got renamed to `pg-repack-std-10`.

To migrate from PostgreSQL or a Postgres Pro Standard release based on a previous PostgreSQL major version, see the instructions in Postgres Pro Standard 10.1.1 Release Notes. If you are opting for a dump/restore, make sure to use the `--add-collprovider` option to correctly choose the collation provider for the migrated database.