Materialize/doc/user/content/releases/v0.75.md

---

title: "Materialize v0.75" date: 2023-11-01 released: true

patch: 3

v0.75.0

SQL

• Support ALTER [ CLUSTER | SCHEMA ] SWAP, which allows atomically renaming clusters and schemas. This is useful in the context of Blue/Green deployments.

• Change the semantics and schema of the mz_internal.mz_frontiers system catalog table, and add the mz_internal.mz_cluster_replica_frontiers system catalog table. These objects are mostly useful to support existing and upcoming features in Materialize.

Bug fixes and other improvements

• Remove the requirement of USAGE privileges on types for SELECT and EXPLAIN statements.