I don't see anything relevant in the PG13 release notes, but in the release notes for 14 there are these items: - "Allow partitions to be detached in a non-blo

I don't see anything relevant in the PG13 release notes, but in the release notes for 14 there are these items: - "Allow partitions to be detached in a non-blocking manner. The syntax is ALTER TABLE ... DETACH PARTITION ... CONCURRENTLY, and FINALIZE." I didn't cover partitioning in the guide, but this is a real improvement to DDL with partitions. - "Allow index commands using CONCURRENTLY to avoid waiting for the completion of other operations using CONCURRENTLY." This doesn't add new lower-lock level DDL, but it does improve the speed of existing such DDL. - "Allow vacuum to be more aggressive in removing dead rows during minimal-locking index operations. Specifically, CREATE INDEX CONCURRENTLY and REINDEX CONCURRENTLY no longer limit the dead row removal of other relations." Similarly this doesn't add new lower-lock level DDL, but it does improve the safety of existing such DDL by eliminating a case where concurrent index creation could result in performance degradation of the system as a whole.