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PROFESSIONAL-DATA-ENGINEER · Question #295

PROFESSIONAL-DATA-ENGINEER Question #295: Real Exam Question with Answer & Explanation

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Submitted by paula_co· Mar 30, 2026Designing data processing systems

Question

Your company's customer_order table in BigQuery stores the order history for 10 million customers, with a table size of 10 PB. You need to create a dashboard for the support team to view the order history. The dashboard has two filters, country_name and username. Both are string data types in the BigQuery table. When a filter is applied, the dashboard fetches the order history from the table and displays the query results. However, the dashboard is slow to show the results when applying the filters to the following query: How should you redesign the BigQuery table to support faster access?

Options

  • DPartition the table by _PARTITIONTIME.

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Topics

#BigQuery Optimization#Table Clustering#Query Performance#Data Modeling
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