Schița de curs
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
Cerințe
- 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
Mărturii (5)
Philip a fost foarte amabil, stilul său de a explica conceptele SQL este remarcabil. Mi-a plăcut că ne-a oferit informații și a răspuns la întrebări care nu făceau parte din acest curs.
Stefan
Curs - SQL in SQL Server
Tradus de catre o masina
funcțiile analitice
khusboo dassani - Tech Northwest Skillnet
Curs - SQL Advanced
Tradus de catre o masina
Materialele de antrenament.
Mona Dobre - DB Global Technology
Curs - SQL Advanced level for Analysts
Tradus de catre o masina
Modul învățământului instructorului este foarte informativ și eficient, mai ales pe al doilea zi când subiectele sunt puțin mai avansate.
Aynanie Kiram - Aarki, Inc.
Curs - SQL DATABASE MANAGEMENT AND DESIGN - Bespoke
Tradus de catre o masina
Exerciții interactive
Matthew Viner - Thames Water Utilites Ltd
Curs - Transact SQL Basic
Tradus de catre o masina