Funnel analysis in ClickHouse

The text discusses funnel analysis, a technique used to understand how users progress through a series of steps in processes such as sales or conversion. ClickHouse is highlighted as a powerful tool for performing funnel analysis due to its speed, efficiency, and real-time capabilities. The windowFunnel function is introduced as the most effective way to perform this type of analysis in ClickHouse. An example of using windowFunnel for analyzing user behavior in an online taco shop's purchasing process is provided. The text also briefly explains when to use sequenceMatch instead of windowFunnel, depending on the complexity and flexibility required in the pattern of events being tracked. Finally, it emphasizes the benefits of ClickHouse for large-scale, real-time funnel analysis and promotes Propel's Serverless ClickHouse forever-free plan as a suitable option for users to get started with this technology.