v.22.11Improvement

Progress Display Enhancement in ClickHouse Client

Official CH changelog text
If /dev/tty is available, the progress in clickhouse-client and clickhouse-local will be rendered directly to the terminal, without writing to STDERR. It allows getting progress even if STDERR is redirected to a file, and the file will not be polluted by terminal escape sequences. The progress can be disabled by --progress false. This closes #32238. #42003 (Alexey Milovidov).
ClickHouse clients clickhouse-client and clickhouse-local now render progress directly to the terminal via /dev/tty if available, instead of writing to STDERR.

Why it matters

This feature improves progress visibility when STDERR output is redirected to a file, preventing the file from being polluted with terminal escape sequences and allowing users to monitor progress directly in the terminal.

How to use it

By default, progress is rendered to /dev/tty if available. To disable the progress display, use the command-line option --progress false when running clickhouse-client or clickhouse-local.

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