Google BigQuery Adhoc Queries Generating Spikes

September 26, 2025

This RADEN video shows how to detect ad hoc queries that may drive cost spikes during peak usage hour in Google BigQuery.

  • Apply plan grading to identify potential inefficiencies and determine if most queries were scheduled and executed by service accounts, not ad hoc users.
  • Identify any evidence if ad hoc queries were contributing to peak-hour cost increases.
  • Learn how to isolate ad hoc queries more effectively, filtering by user accounts instead of service accounts.
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