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Home/Questions/Cloud/Tools/What are the pricing models for queries in Athena?

What are the pricing models for queries in Athena?

Cloud/Toolshard0.4 min readPremium

**Pricing**: $5 per TB scanned. No charge for DDL, failed queries, or metadata. **Implication**: Cost is directly tied to bytes scanned. Full table scan on 10 TB = $50 per query. **Optimization**: Partitioning (by date, etc.) prunes; 1% of data = 1% cost. Columnar formats...

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Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Capco
Key Concepts Tested
optimizationpartition

Why This Question Matters

This hard-level Cloud/Tools question appears frequently in data engineering interviews at companies like Capco. While less common, it tests deeper understanding that distinguishes strong candidates. Mastering the underlying concepts (optimization, partition) will help you answer variations of this question confidently.

How to Approach This

This is a senior-level question that tests architectural thinking. Lead with the high-level design, then drill into specifics. Discuss trade-offs explicitly - there is rarely one correct answer. Show awareness of scale, fault tolerance, and operational complexity.

Expert Answer
86 words

Pricing: $5 per TB scanned. No charge for DDL, failed queries, or metadata. Implication: Cost is directly tied to bytes scanned. Full table scan on 10 TB = $50 per query. Optimization: Partitioning (by date, etc.) prunes; 1% of data = 1% cost. Columnar formats (Parquet, ORC)—read only needed columns. Partition projection avoids metastore calls. Compress data. Scalability: At 100 TB scanned/month, $500. At 1 PB, $5,000. Optimization can cut 80%+. Best practice: Always partition; always use Parquet/ORC; avoid SELECT *; use partition projection for high-volume.

The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations covering performance optimization and real-world examples.

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According to DataEngPrep.tech, this is one of the most frequently asked Cloud/Tools interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.

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