Most candidates preparing for data analyst interviews in 2026 treat the whole thing like a SQL exam. That is not what gets you the offer. A typical DA loop covers three distinct round types in sequence: SQL technical, open-ended business case problems, and behavioral questions. Getting strong in one and weak in the other two is the most common reason candidates fail late in the process. Here is a practical breakdown of what actually shows up in each round, with answer structures you can use right away. The Three-Round Structure Most DA interview loops follow this pattern: SQL take-home or online assessment Live SQL technical round (30-45 minutes, two to three problems) Business case or product sense round Behavioral round Stakeholder presentation for senior roles The most common failure mode: treating steps two and three as one thing. The SQL round tests whether you can write accurate, optimized queries. The business case round tests whether you can think in metrics and hypotheses.…