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課程簡介
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
最低要求
- 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
14 時間：
客戶評論 (5)
菲力浦非常友善，他解釋SQL概念的風格非常出色。 我喜歡他給我們資訊並回答不屬於本課程的問題。
Stefan
Course - SQL in SQL Server
機器翻譯
analytical functions
khusboo dassani - Tech Northwest Skillnet
Course - SQL Advanced
The training materials.
Mona Dobre - DB Global Technology
Course - 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.
Course - SQL DATABASE MANAGEMENT AND DESIGN - Bespoke
Interactive exercises
