Grouping logs by field in UI requires SQL sandbox
Last updated: February 26, 2026
Summary
Applicable To
Plans: All plans
Deployments: All
Issue: The logs viewer display dropdown shows grouping options for custom fields, but these options don't function when selected in the UI. This is particularly problematic when trying to group traces by custom metadata fields like thread_id to organize related logs.
Cause: Grouping by custom fields is not yet implemented in the logs viewer UI, though the options appear in the dropdown.
Resolution: Use the SQL sandbox to group logs by custom fields until UI support is added in a future release.
Use case: Grouping logs by custom metadata fields in the logs viewer
Resolution Steps
Workaround: Use SQL sandbox
Step 1: Navigate to SQL sandbox
Access the SQL sandbox from your Braintrust project.
Step 2: Query logs with GROUP BY
Write a SQL query to group logs by your custom field.
SELECT
metadata->>'thread_id' as thread_id,
COUNT(*) as log_count,
MIN(created) as first_log,
MAX(created) as last_log
FROM logs
WHERE root_span = true
GROUP BY metadata->>'thread_id'
ORDER BY last_log DESCStep 3: Analyze grouped results
Review the grouped logs to identify patterns or filter to specific groups of interest.