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Apple Store Data Analysis using PostgreSQL and SQL. This project includes data exploration, filtering, sorting, joins, aggregations, GROUP BY, subqueries, revenue analysis, sales analysis, warranty ...
Most people learn SQL by memorizing queries. But when it comes to interviews, projects, or real-world datasets, memorization isn't enough. You need to understand how SQL works and when to use each ...
🗄️ SQL Complete Handwritten Notes Want to master SQL and build a strong foundation in databases? These complete handwritten notes are perfect for beginners, students, and placement preparation. 📚 ...