SQL in 10 Minutes: A Fast Visual Refresher for Work & Interviews - Softcover

Duck, Rubber

Softcover

ISBN 13: 9798193300830

Verlag: Independently published, 2026

Inhaltsangabe

You know SQL. The problem is remembering it when you actually need it.

You remember SELECT. You remember joins. But under interview pressure—or while staring at a query at work—can you immediately explain why WHERE cannot filter SUM(total), why a LEFT JOIN can accidentally behave like an INNER JOIN, or what NULL does to NOT IN?

SQL in 10 Minutes is a fast visual refresher for people who have seen SQL before and want the useful parts back in working memory.

This is not a from-zero SQL course. It is not a 600-page textbook. And it is not a flimsy cheat sheet.

It is a compact, MySQL-leaning field guide built around practical examples, result sets, visual mental models, recall drills, and the mistakes that actually cause confusion in interviews and real work.

Inside you’ll refresh:

• Logical query processing: FROM → WHERE → GROUP BY → HAVING → SELECT
• NULL and three-valued logic
• IN, BETWEEN, LIKE, EXISTS, operators, and precedence
• ORDER BY, LIMIT, aggregates, GROUP BY, and HAVING
• INNER, LEFT, RIGHT, and full-outer-join concepts
• Join multiplication and duplicate-looking rows
• INSERT, UPDATE, DELETE, TRUNCATE, and DROP
• Transactions, COMMIT, ROLLBACK, and SAVEPOINT
• MySQL numeric, text, and temporal data types
• TIMESTAMP time-zone behavior vs. DATETIME
• Primary keys, foreign keys, constraints, and referential actions
• Indexes and EXPLAIN
• Views, CTEs, CASE, set operations, and window functions
• Important SQL Server-to-MySQL syntax differences

Throughout the book, recurring examples reduce context switching so you can focus on the SQL—not on learning a new toy scenario every page.

Use it before a technical screen. Before an interview. Before a meeting. Or keep it beside your keyboard for the moment when you know the concept but cannot remember the exact syntax.

Short enough to start now. Useful enough to keep nearby.

Details zur Ausgabe

• Verlag: Independently published
• Erscheinungsdatum: 2026
• Sprache: Englisch
• ISBN 13: 9798193300830
• Einband: Tapa blanda
• Anzahl der Seiten: 35
• Kontakt zum Hersteller: Manufactured by Amazon on behalf of the author; https://www.amazon.es/hz/contact-us; ; c/o Amazon Media EU S.à.r.l., 38 Avenue John F. Kennedy; Luxembourg; L-1855; Luxemburg