# Applying Analytical Patterns: Aggregations and Cardinality Reduction Day 2 Lab

> In this lab session, Zach demonstrates various queries and aggregations that can be applied to the bootcamp web events table. The talk emphasizes the significance of reducing cardinality and showcases the use of functions like coalesce and rollup.

- Web page: https://www.dataexpert.io/lesson/applying-analytical-patterns-day-2-lab-yt-p736-l673
- Access: Requires enrollment
- Length: 34 min video
- Skills: SQL, Data Modeling, ETL/ELT, Statistics
- Academy: DataExpert.io Academy

## About this lesson

In this lab session, Zach demonstrates various queries and aggregations that can be applied to the bootcamp web events table. The talk emphasizes the significance of reducing cardinality and showcases the use of functions like coalesce and rollup.