- name: hits
  label: Hits
  chart: bar
  query: |
    SELECT {bucket} AS bucket,
           COUNT(*) AS value
    FROM logs
    GROUP BY bucket
    ORDER BY bucket

- name: error_rate
  label: Error Rate (%)
  chart: line
  query: |
    SELECT {bucket} AS bucket,
           SUM(CASE WHEN status >= 500 THEN 1 ELSE 0 END) * 100.0 / COUNT(*) AS value
    FROM logs
    GROUP BY bucket
    ORDER BY bucket