Day 35 – ClickHouse® and S3 Integration: Querying Data Lakes

Short summary

ClickHouse integrates with Amazon S3 to query data directly from data lakes via s3() functions, eliminating data duplication and simplifying ETL pipelines. The approach supports multiple formats (CSV, JSON, Parquet, ORC) with Parquet optimal for performance. Frequently accessed datasets can be imported into ClickHouse tables for production-level query execution.

• •ClickHouse s3() function queries S3 data directly without importing
• •Supports multiple formats; Parquet recommended for analytical workloads
• •Import frequently accessed datasets for better performance and lower S3 costs

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