v.24.1Improvement

Display Word-Descriptive Log Level with JSON Structured Formatting

Official CH changelog text
Display word-descriptive log level while enabling structured log formatting in json. #58936 (Tim Liou).
Display word-descriptive log levels when enabling structured log formatting in JSON.

Why it matters

This feature improves log readability by showing log levels as descriptive words (e.g., "INFO", "ERROR") instead of numeric codes in structured JSON logs. It helps users and administrators better understand log severity without needing to decode numeric values.

How to use it

Enable structured log formatting in JSON using the appropriate ClickHouse server settings. The log level will then be displayed as a descriptive word automatically in the JSON output.

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