I'm a frontend developer. For most of my career, "the database" was someone else's problem — a thing behind an API that I fetch()-ed from and rendered. SQL always felt like a different planet, and ...
"I need to migrate this Python 2 codebase to Python 3 someday..." "I want to rewrite React class components to Hooks, but there's just too much..." Every engineer has experienced the agony of legacy ...
Questions: Write an SQL query to identify the best customer (highest total transaction amount) in: Q1 (January–March) Q2 (April–June) Q3 (July–September) If multiple customers have the same highest ...
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