Sql minutes fast visual de duck rubber (2 resultados)

Taschenbuch. Condición: Neu. Neuware - 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 differencesThroughout 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.…

Condición: New. Print on Demand.