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Querying and Optimization
Prerequisites
- Completed Foundation module (ClickHouse architecture, schema design, and engines)
- Completed Ingestion module (understanding parts, merges, and ingestion patterns)
- Understanding of SQL and database query concepts
- Familiarity with ClickHouse table engines and sorting keys
This learning module covers how to write efficient queries in ClickHouse and optimize query performance. You'll learn about materialized views for pre-aggregation, query optimization techniques, indexing strategies, and best practices for building fast analytics applications.
What you'll learn
- Materialized Views: How to use materialized views for pre-aggregation and data transformation
- Query Optimization: Techniques for writing efficient queries and optimizing performance
- Indexing: Understanding sorting keys, index granularity, and data skipping indices
- Best Practices: Expert advice for building fast analytics applications in ClickHouse