Settings constraints in ClickHouse now support specifying a set of disallowed values.
Why it matters
To enhance configuration control by allowing administrators to define not only allowed ranges or values for settings but also explicitly disallowed values, preventing misconfiguration and improving system reliability.How to use it
Define settings constraints with a list of disallowed values in the settings configuration. When applied, ClickHouse will reject any settings attempt that matches these disallowed values.