SQL Oracle Tutorial: Advanced Techniques for Restricting and Sorting Data

"Enhance your SQL skills with this in-depth tutorial on advanced database management and complex queries. Perfect for intermediate to advanced learners, this course covers essential SQL concepts such as subqueries, joins, aggregation, and performance optimization. Boost your database proficiency and handle complex data sets with confidence.

Course Breakdown with Time Markers:
00:00:00 - Introduction to Advanced SQL (02:00 minutes)

Overview of the course content.
Prerequisites and learning outcomes.
Importance of advanced SQL skills.
00:02:00 - Complex Queries and Subqueries (05:00 minutes)

What are subqueries?
Using subqueries in SELECT, INSERT, UPDATE, DELETE.
Nested subqueries vs. correlated subqueries.
Practical examples and use cases.
00:07:00 - Advanced Joins (05:00 minutes)

Recap of basic joins.
Full outer join, cross join, self join.
Handling complex scenarios with multiple joins.
Real-world application scenarios.
00:12:00 - Data Aggregation and Grouping (04:00 minutes)

Using GROUP BY and HAVING clauses.
Aggregate functions: COUNT, SUM, AVG, MIN, MAX.
Advanced use of aggregate functions with conditions.
00:16:00 - Window Functions (04:00 minutes)

Introduction to window functions.
ROW_NUMBER(), RANK(), DENSE_RANK().
PARTITION BY and ORDER BY in window functions.
Use cases for analytical queries.
00:20:00 - Performance Optimization (05:00 minutes)

Indexing strategies.
Query optimization techniques.
Analyzing execution plans.
Avoiding common pitfalls in query performance.
00:25:00 - Conclusion and Next Steps (01:00 minute)

Recap of the key concepts covered.
Additional resources and recommended learning paths.
Final tips for mastering SQL.
00:26:00 - Q&A and Common Mistakes (03:00 minutes)

Common errors and how to avoid them.
Best practices for writing efficient SQL queries.

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