04/17/2026
BigQuery charges for how much data a query scans, not how long it runs.
A fast but sloppy query can scan an entire 10 TB table and cost A LOT. A well-written query reads only the rows and columns it needs, and answers the same question for a fraction of the cost.
The same workload on the same tables can look like “usage growth” when the real issue is sloppy query design. Unravel Data makes these visible and fixable by inspecting BigQuery workloads, surfacing wasteful scans, and giving clear, line-by-line recommendations for disciplined, efficient queries.