A Day in the life of a ClickHouse Query is a gentle introduction to ClickHouse internals, focusing on topics that will help your applications run faster and more efficiently.
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This webinar covers the basic flow of query execution and how ClickHouse handles aggregation and joins and distributes processing within a single CPU and across many nodes in the network. You'll also learn what happens inside ClickHouse when a query runs and find answers to questions like:
- Why do queries run out of memory?
- How can you make your queries even faster?
- How should you size ClickHouse nodes for best cost-efficiency?
Presentation slides can be found here