Planning Multi-Step Queries
Explore how to plan and write multi-step SQL queries by breaking complex questions into manageable parts. Learn to use AI as a guide for structuring and coding queries, developing clear logic, and verifying results. This lesson helps you turn human thought into effective SQL code and build layered queries with confidence.
Step 1: Start with a real question
Let’s imagine a common data task: Find departments where the average employee salary is higher than the overall company average.
This question appears to be a single query, but it’s actually several steps in disguise.
Ask yourself:
What’s the company's average salary?
What’s the average per department?
How do I compare them?
Each part can become its own query step, a building block for the final answer. ...
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