Materialize/doc/user/content/releases/v0.65.md

---

title: "Materialize v0.65" date: 2023-08-16 released: true

patch: 2

v0.65.0

SQL

• Breaking change. Limit the length of object identifiers to 255 bytes.

• Include the name and size of cluster replicas in the output of SHOW CLUSTERS as a new column named replicas.

• Improve and extend the base implementation of Role-based access control (RBAC):

  • Add the SHOW ROLES command, which lists the roles available in the system.

It's important to note that role-based access control (RBAC) is disabled by default. You must contact us to enable this feature in your Materialize region.

• Add mz_internal.mz_object_fully_qualified_names and mz_internal.mz_object_lifetimes to the system catalog. These views enrich mz_objects with namespace and lifetime event information, respectively.

• Add mz_internal.mz_expected_group_size_advice to the system catalog. This view provides advice on opportunities to set the EXPECTED GROUP SIZE query hint.

Bug fixes and other improvements

• Breaking change. Disallow executing functions from the mz_internal schema {{% gh 20998 %}}. This change should have no user impact, but please let us know if you run into any issues.