v.25.7Improvement

List the licenses of Rust crates

List the licenses of Rust crates in system.licenses. #82440 (Raúl Marín).
Introduces the system.licenses table, which lists the licenses of Rust crates used in ClickHouse.

Why it matters

This feature provides transparency about the open-source licenses of the Rust dependencies integrated into ClickHouse. It helps users and auditors easily verify the licensing information for compliance and legal purposes.

How to use it

Users can query the system.licenses table directly using standard SQL SELECT statements to retrieve information about the Rust crate licenses. For example:

SELECT * FROM system.licenses;