Databricks - Data Analyst Associate Study Guide

5: Analyzing Queries

This chapter is the analyst's optimization and diagnostics playbook on Databricks SQL. It covers the Photon engine and its supported workloads, the Query Insights and Query Profiler surfaces for reading a slow query, Delta Lake audit and history for validating results against prior runs, query history and the caching tiers that shorten development loops, Liquid Clustering for filter-heavy tables, and the systematic workflow for fixing a query that returns the wrong result.