Can you write a SELECT statement, but freeze the moment a task needs a JOIN, a subquery, or GROUP BY?
That’s the wall almost every SQL beginner hits — tutorials cover basic queries well, then leave you guessing when data lives across multiple tables or needs real summarizing. The result is copy-pasted queries that work by luck, not queries you actually designed. This book takes you past that wall, from your first SELECT to designing, building, and querying a complete database of your own.
Inside, you’ll learn:
- How to filter, sort, and handle NULL values properly, plus shape data with calculated columns, string/date functions, and CASE expressions
- Aggregate functions and GROUP BY/HAVING to summarize data the way real reporting actually requires
- How to combine tables confidently with INNER JOIN, LEFT JOIN, subqueries, and a real understanding of keys and relationships
- Database design fundamentals and normalization, so you can create well-structured tables with proper constraints
- Advanced querying with Common Table Expressions (CTEs), window functions, and views, plus transactions and indexing for performance
By the end, you’ll know how to import/export CSV data and apply basic SQL security practices — then bring it all together in your capstone project: building and querying a complete database from scratch.
Stop freezing at JOINs and subqueries. Get your copy today and start writing SQL you actually understand.






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