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What types of columns support PARTITION_BY in BigQuery?

SQLmedium0.4 min readPremium
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Aarete
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bigquerypartition
Expert AnswerPremium
86 wordsInterview-ready
BigQuery PARTITION BY supports: (1) **DATE/TIMESTAMP**—daily, monthly, yearly; (2) **TIMESTAMP**—hourly; (3) **INTEGER range**—partition by value ranges; (4) **Generated**—e.g., DATE(timestamp_column). **Why these**: Columnar storage enables partition pruning; date/time aligns with typical analytics filters. **Not supported**: STRING partitioning—use CLUSTER BY instead for high-cardinality. **Scalability trade-offs**: DATE partitioning on event tables = excellent prune for time-range queries....
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