Koenig Solutions Pvt. Ltd.

� Write Cleaner and More Powerful SQL Using CTEs and Derived Tables
(Master Advanced Query Techniques for Real-World Data Challenges)
� February 17 · 3 PM IST – Set Reminder �

As datasets grow larger and business logic becomes more complex, writing clean, maintainable SQL becomes essential. Advanced table structures like Common Table Expressions (CTEs), derived tables, and temporal tables help simplify queries, improve readability, and enable powerful data analysis patterns.

This session delivers a clear, practical deep dive into advanced SQL query techniques, helping you write smarter, structured, and performance-aware code.

Led by Geetha M, Corporate Trainer, this session focuses on real-world examples and step-by-step explanations to strengthen your SQL skills.

� What you’ll learn:

1. Common Table Expressions (CTEs)
Understanding the WITH clause and its role in structuring complex queries.
Breaking down large queries into readable, logical steps.
Using multiple CTEs in a single query.
Recursive CTEs for hierarchical data (e.g., org structures, parent-child relationships).
When to use CTEs vs subqueries or temporary tables.

2. Derived Tables (Inline Views)
What derived tables are and how they work inside a query.
Using subqueries in the FROM clause to simplify aggregations and filtering.
Performance considerations when working with derived tables.
Practical examples of simplifying nested queries.

3. Temporal Tables
Introduction to system-versioned (temporal) tables.
Tracking historical changes automatically in SQL databases.
Querying data at a specific point in time.
Real-world use cases for auditing, compliance, and historical reporting.

4. Choosing the Right Approach
CTEs vs derived tables—clarity, scope, and performance trade-offs.
When temporal tables reduce the need for manual audit logic.
Writing maintainable and production-ready SQL.

5. Real-World Query Scenarios
Financial reporting with historical tracking.
Sales analysis using layered CTE logic.
Simplifying reporting queries using inline aggregations.
Handling evolving datasets with temporal structures.

6. Performance & Optimization Tips
Avoiding unnecessary nesting.
Indexing considerations for advanced queries.
Query ex*****on plan basics for tuning performance.

7. Live Q&A and Applied Guidance
Answering participant questions on complex SQL logic and best practices.
Practical advice for analysts, developers, and database professionals.

� Who should attend?
SQL developers and database administrators
Data analysts and BI professionals
Students learning advanced SQL concepts
Anyone working with complex queries or historical data

Speaker:
Geetha M
Corporate Trainer | Koenig Solutions Pvt. Ltd.

� Follow & Learn More:
� Koenig Solutions: https://www.koenig-solutions.com
� LinkedIn: https://www.linkedin.com/company/koenig-solutions
� Facebook: https://www.facebook.com/koenigsolutions
� Instagram: https://www.instagram.com/koenigsolutions
� Twitter (X): https://x.com/KoenigSolutions
� Upcoming Webinars: https://www.koenig-solutions.com/upcoming-webinars

� If you want to elevate your SQL from functional to powerful and maintainable, this session will equip you with the tools and techniques to write cleaner, more structured queries confidently.
� Like | � Comment | � Subscribe for more expert-led SQL and data engineering sessions.

� Building a Real-World Data Analysis Portfolio Project with Power BI
(Master the Full Analytics Workflow from Data to Dashboard)
� February 14 · 9 PM IST – Set Reminder �

A strong Power BI portfolio project does more than showcase visuals—it demonstrates your ability to connect to data, clean it, model it, analyze it, and present insights clearly. Whether you're preparing for analytics roles or sharpening your BI skills, learning the complete Power BI workflow is essential.

This session walks you through every stage of building a real-world data analysis project, giving you the hands-on skills needed to create a portfolio-worthy Power BI solution.

Led by Chinechetam Okafor, Corporate Trainer, this session blends fundamentals with practical project-building techniques to help your work stand out.

� What you’ll learn:

1. Introduction to Power BI
What Power BI is and how it fits into modern data analytics.
Overview of Power BI Desktop, Service, and the complete BI lifecycle.
Understanding how Power BI helps transform raw data into actionable insights.

2. Connecting to Data Sources
Importing data from Excel, databases, web sources, cloud storage, and more.
Choosing the right connectivity mode: Import vs DirectQuery.
Managing refreshes and building reliable data pipelines for your project.

3. Data Transformation with Power Query
Cleaning and shaping data before modeling.
Removing duplicates, fixing formatting issues, merging and appending tables.
Using the Power Query Editor to automate repeatable data-preparation steps.
Best practices for maintaining quality and consistency across datasets.

4. Data Modeling Essentials
Designing an effective data model for analysis.
Understanding relationships, cardinality, and star schema design.
Creating hierarchies, calculated columns, and optimizing performance.
Why a strong model is the foundation of a successful portfolio project.

5. DAX Fundamentals
Learning core DAX concepts—row context, filter context, evaluation.
Writing essential measures:
• Total Sales
• Year-over-Year growth
• Running totals
• Filters and conditional calculations
How DAX brings deeper, dynamic insights to your reports.

6. Building a Portfolio-Ready Dashboard
Choosing visuals that tell a compelling story.
Adding interactivity with slices, drill-throughs, bookmarks, and tooltips.
Design principles: clarity, simplicity, and business relevance.
Turning analysis into a polished dashboard suitable for interviews or client presentations.

7. Live Q&A and Applied Guidance
Get answers on modeling, DAX, dashboard design, and portfolio-building strategies.
Personalized tips to elevate your Power BI analytics journey.

� Who should attend?
Aspiring data analysts & BI developers
Students building analytics portfolios
Professionals transitioning into data roles
Anyone looking to master real-world Power BI projects

Speaker:
Chinechetam Okafor
Corporate Trainer | Koenig Solutions Pvt. Ltd.

� Follow & Learn More:
� Koenig Solutions: https://www.koenig-solutions.com
� LinkedIn: https://www.linkedin.com/company/koenig-solutions
� Facebook: https://www.facebook.com/koenigsolutions
� Instagram: https://www.instagram.com/koenigsolutions
� Twitter (X): https://x.com/KoenigSolutions
� Upcoming Webinars: https://www.koenig-solutions.com/upcoming-webinars

� If you want to build Power BI projects that impress employers and clients, this session will guide you through every step—from raw data to polished, portfolio-ready insights.
� Like | � Comment | � Subscribe for more expert-led Power BI, analytics, and dashboard design sessions.