v.22.4Improvement

Improve JOIN Pipeline Description

Improve the pipeline description for JOIN. #35612 (何李夫).
Improved the internal pipeline description for JOIN operations in ClickHouse.

Why it matters

This enhancement clarifies and optimizes the internal processing pipeline of JOIN queries, which helps in better understanding and potentially improving the performance and maintainability of JOIN operations.

How to use it

This is an internal improvement and does not require any user intervention or configuration changes. Users will benefit automatically when using JOIN queries.