Forbid CREATE TABLE AS SELECT for Replicated table engines in experimental Replicated database

Why it matters

This feature prevents users from executing unsupported CREATE TABLE ... AS SELECT queries on Replicated tables within the experimental Replicated database engine. It helps avoid potential inconsistencies or unexpected behavior by enforcing proper table creation methods for replicated tables.

How to use it

Users simply need to avoid using CREATE TABLE ... AS SELECT syntax with Replicated engines. If attempted, the query will be forbidden to ensure stability and correctness of replicated tables.