Kursplan
Review of SQL Basics
- Recap of SELECT, WHERE, GROUP BY
- Quick review of JOIN types
- Understanding query execution order
Data Manipulation Statements
- INSERT INTO
- UPDATE and DELETE
- Transaction control (BEGIN, COMMIT, ROLLBACK)
Advanced Joins and Set Operations
- FULL OUTER JOIN
- UNION, INTERSECT, EXCEPT
- SELF JOIN
Subqueries and Derived Tables
- Correlated vs. non-correlated subqueries
- Using subqueries in FROM
- CTEs (Common Table Expressions)
Window Functions
- ROW_NUMBER, RANK, DENSE_RANK
- PARTITION BY and ORDER BY
- LEAD and LAG functions
Data Types and Functions
- String and date functions
- CASE and IF statements
- Type conversions and null handling
Query Optimization
- Understanding indexes
- Using EXPLAIN
- Best practices for writing efficient queries
Summary and Next Steps
Krav
- Basic knowledge of SQL SELECT statements
- Experience with filtering, sorting, and simple joins
- Understanding of relational database concepts
Audience
- Data analysts
- Developers working with SQL databases
- Business intelligence professionals
Vittnesmål (5)
Philip var väldigt snäll, hans stil att förklara SQL begrepp är enastående. Jag gillade att han gav oss information och svarade på frågor som inte var en del av denna kurs.
Stefan
Kurs - SQL in SQL Server
Machine Translated
analytical functions
khusboo dassani - Tech Northwest Skillnet
Kurs - SQL Advanced
The training materials.
Mona Dobre - DB Global Technology
Kurs - SQL Advanced level for Analysts
They way the instructor teaches is very informative and effective especially on the 2nd day when topics are a bit advanced.
Aynanie Kiram - Aarki, Inc.
Kurs - SQL DATABASE MANAGEMENT AND DESIGN - Bespoke
Interactive exercises